JP4727699B2 - Wooden frame bearing wall, wooden frame building and its construction method - Google Patents

Description

The present invention relates to a wooden frame building, and more particularly, to a wooden frame bearing wall using a corner bracket, a wooden frame building, and a construction method thereof.

  In our country, which is a major producer of timber, wooden buildings using timber as the frame structure are the mainstream, and these wooden buildings are low cost and have excellent habitability. In addition to regional disaster prevention, it is indispensable to protect the property.

  With respect to the seismic structure of this wooden building, Patent Document 1 is a structure in which a brace or a face material is integrated with a bolt and a nut in the joint hardware, and the joint hardware includes a first shaft assembly material and a second shaft assembly material. A three-dimensional structure that is orthogonal and has a depth that is greater than the thickness of the brace or face material used for reinforcement, and a surface that contacts both the outer and inner side surfaces of the corner of the second shaft assembly. It has a shape and the brace or face material is a structure that reinforces the first shaft assembly material and the second shaft assembly material, and the surface that contacts the shaft assembly material so that the joint hardware can be used in two sets. Are provided with holes for bolts that are opened symmetrically, have asymmetrical holes for temporary fixing protrusions and nails or screws, and have a protrusion or roughened surface on the surface that connects the brace of joint metal or plywood. In addition, it is disclosed to integrate with a bolt or the like using a protrusion or a roughened washer.

  In Patent Document 2, corner reinforcing brackets are attached to each of the four corners of the horizontal plane side frame, and each corner reinforcing bracket is framed along the horizontal plane with the front and rear torso and left and right torso sandwiching the corner column. In addition, the horizontal reinforcement between the corner reinforcement brackets facing diagonally at the four corners is horizontally stretched, and a turnbuckle is provided at each horizontal reinforcement, and the wall is framed along the wall including the torso and pillar It is disclosed to attach one end of a wall-side brace that is stretched between columns of a side frame.

Further, in Patent Document 3, the reinforcing hardware attached to both ends of the horizontal beam passed between the pair of pillars is attached to the vertical corner surface and the horizontal corner surface forming the right-angled corner surface between the column and the horizontal rail. The vertical mounting piece and the horizontal mounting piece, and the diagonal mounting piece are formed in a buckling reinforcing structure having a concavo-convex shape or a rib or a flange, and the vertical mounting piece is the vertical direction of the column. It is attached to the vertical corner surface through at least two or more mounting holes arranged in the horizontal mounting piece, and the horizontal mounting piece is attached to the horizontal corner surface through at least two mounting holes arranged in the horizontal direction of the horizontal rail. Is disclosed.
JP 2006-104916 A JP 2006-169836 A JP 2007-255090 A

  By the way, as for the earthquake resistance of the wooden building, even if the joint hardware has a surface that comes into contact with either the outer side or the inner side of the corner of the second frame assembly material, it is sufficient for the fixing part to the pillar made of wood. When the fixing strength cannot be obtained, sufficient earthquake resistance cannot be obtained (Patent Document 1). In addition, even with a structure in which wall reinforcements are attached to a triangular reinforcing hardware (Patent Document 2), sufficient seismic resistance is expected because sufficient fixing strength cannot be obtained between the triangular reinforcing hardware and the pillar made of wood. Can not. In addition, the structure using a plurality of reinforcing hardware and cross rails (Patent Document 3) can withstand a certain degree of earthquake by reinforcing the pillar, but is insufficient for a huge earthquake.

  Therefore, an object of the present invention relates to a wooden framed building and is to provide high earthquake resistance and improve workability.

Another object of the present invention is to realize the ease of seismic retrofitting work for wooden frame buildings.

In order to achieve the above object, the present invention provides a base and a beam, a column erected between the base and the beam, and a corner installed at a corner formed by the base or the beam and the column. A wooden frame bearing wall comprising a hardware and a brace fixed to the corner hardware, and a construction method thereof, which is fixed to a foundation, protrudes from the foundation, penetrates the foundation, and fixes the foundation to the foundation An anchor bolt, and a bolt with a washer fixed to the corner metal object with the base or the beam or the pillar interposed therebetween, and the bolt with the washer has a washer part facing a side plate part of the corner metal object, and the bolt It is fixed integrally, and the corner plate is provided with a side plate portion installed at least on the side surface portion side of the column, and by having such a configuration, the bonding strength between the column and the base or beam is increased, This improves the earthquake resistance of the wooden frame bearing walls. Together, they realize the ease of workability and seismic renovation.

Therefore, in order to achieve the above object, a first aspect of the present invention includes a base and a beam, a pair of columns erected between the base and the beam, and the base or the beam and each column. A wooden frame bearing wall comprising a plurality of corner fittings installed at each corner of the corner and a brace fixed between the diagonal corner fittings,
A plurality of anchor bolts fixed to the foundation outside the interval between the pair of columns and projecting from the foundation, penetrating the foundation and fixing the foundation to the foundation;
A pair of first corner hardware installed at each corner formed by the base and each pillar;
A pair of second corner fittings diagonally to the first corner bracket and installed at each corner corner formed by the beam and each column;
The first corner piece or the second corner piece, and a plurality of bolts with washers fixed across the foundation or the beam or each column,
The first corner metal object includes a first side plate portion applied to the base, a second side plate portion formed integrally with the first side plate portion and applied to one surface portion of each pillar, and the second side plate portion. A reinforcing part formed integrally with the side plate part and fixed to the third side plate part applied to the other surface part of each column, the first side plate part and the second side plate part, and the bracing is fixed With
The second corner metal object includes a first side plate portion applied to the beam, a second side plate portion formed integrally with the first side plate portion and applied to one surface portion of each pillar, and the second side plate portion. A reinforcing part formed integrally with the side plate part and fixed to the third side plate part applied to the other surface part of each column, the first side plate part and the second side plate part, and the bracing is fixed With
The washer bolt, said across the foundation or the beam opposite to the first side plate portion, or the a washer portion facing the second side plate portion across each column is fixed to the washer portion It said base or said beam and said first side plate portion, or a plurality of bolts which pass through the respective column and the second side plate portion Te,
The bracing includes a rod-shaped turnbuckle steel having a feather plate portion formed at an end portion, and the battle plate portion is connected between the reinforcing portions of the first corner metal piece and the second corner metal piece on a diagonal line. Hanger,
Use a pillar material with a width of 120 mm or more for each pillar,
Use a base material of width 120 x height 150 [mm] or more to the base,
The first side plate portion, the second side plate portion, the third side plate portion, and the reinforcing portion of each corner piece are steel materials having a thickness of 9 mm or more,
The short-term allowable shear strength Pa exceeds 9.78 [kN] and the short-term allowable shear wall magnification exceeds 5.4, which exceeds the provisions of Article 46, Paragraph 4, Table 1 of the Building Standards Law Enforcement Ordinance . The above object is achieved by such a configuration.

In the wooden framework bearing wall, preferably, the base or the said devoted to the beam first side plate portion is fixed by the coach bolt to the foundation or the beam, or the second devoted to the each pillar side It is good also as a structure by which the side-plate part was fixed to the said each pillar with the coach volt | bolt.

The wooden frame bearing wall preferably includes a fourth side plate portion that is formed integrally with the first side plate portion and is applied to the other surface portion of the base or the beam, or the fourth side plate. The portion and the third side plate portion may be formed as an integral side plate.

Moreover, in order to achieve the said objective, the 2nd side surface of this invention is a wooden frame building, Comprising: It is provided with the said wooden frame bearing wall.

In order to achieve the above object, a third aspect of the present invention includes a base and a beam, a pair of columns erected between the base and the beam, the base or the beam, and the columns. A construction method of a wooden frame building comprising a plurality of corner fittings installed at each corner corner formed by and a brace fixed between the diagonal corner fittings,
Fixing the foundation to the foundation by fixing the foundation to the foundation by fixing the anchor bolt to the foundation outside the interval between the pair of pillars and projecting a plurality of anchor bolts from the foundation;
It said base and said beam, and a step of installing the said pair of pillars between said base and said beam,
A first side plate applied to the base or the beam, a second side plate formed integrally with the first side plate and applied to one surface of each pillar, and integrated with the second side plate the third side plate portion devoted to other surface portions of each pillar is formed, the first side plate portion and the corner fittings the foundation or the beam comprising the reinforcing part fixed to the second side plate portion And a step of installing in each corner formed by each of the pillars;
The foundation or opposite to the first side plate portion across the beam, or the a washer portion facing the second side plate portion across each column, the base or the beam is fixed to the washer portion and the first side plate portion, or may be fixed to the corner fittings of the respective posts and washer bolt and a plurality of bolts which pass through the second side plate portion across the base, or the beam or the respective pillar Process,
Fixing the braces to the reinforcing part of the corner metal piece arranged on a diagonal line;
Only including,
The brace comprises a rod-shaped turnbuckle steel having a battledore plate part at the end, and the battledore unit is a stake that is connected between the reinforcing portions of the corner metal on the diagonal line ,
Use a pillar material with a width of 120 mm or more for each pillar,
Use a base material of width 120 x height 150 [mm] or more to the base,
The first side plate portion, the second side plate portion, the third side plate portion, and the reinforcing portion of each corner piece are steel materials having a thickness of 9 mm or more,
The short-term allowable shear strength Pa exceeds 9.78 [kN] and the short-term allowable shear wall magnification exceeds 5.4, exceeding the provisions of Article 46, Paragraph 4, Table 1 of the Building Standard Law Enforcement Ordinance . With such a configuration, the above object is achieved.

  According to the present invention, the following effects can be obtained.

  (1) A wall magnification of 5.4 or more, exceeding the wall magnification of 5 specified in the current Building Standard Law Enforcement Ordinance, can be achieved and the earthquake resistance can be improved. For this reason, if a structural plywood with a thickness of about 9 mm is pasted on both sides of the wall, a wall magnification of 10.4 can be achieved in the calculation, and a wooden frame bearing wall using 12 cm square wood has extremely high earthquake resistance. Is obtained. Withstand earthquakes and contribute to regional disaster prevention.

  (2) The wall opening can be enlarged, contributing to the freedom and improvement of the design of wooden framed buildings.

  (3) Semi-external and external sashes can be attached, and lighting and ventilation can be realized while maintaining high strength.

  (4) The corner metal has a side plate surrounding the two vertical surfaces of the pillar. Such a corner hardware promotes the verticalization of the pillar and can prevent the building from going wrong.

(5) Bracing and corner metal fittings can be installed in the column surface, facilitating the finishing and construction of the wall surface, better workability than bracing of conventional wooden boards, and stabilizing the wooden frame bearing wall. .
.

(6) It can be applied to seismic retrofitting work for wooden frame buildings, etc., and can improve the earthquake resistance of wooden frame buildings and can be used for regional disaster prevention.

[First Embodiment]

  For the first embodiment of the present invention, reference is made to FIG. FIG. 1 is a perspective view showing an example of a basic structure of a wooden frame bearing wall.

  The wooden frame bearing wall 502 is an example of a wooden frame bearing wall or a wooden frame building including a wooden frame bearing wall. A base 506 is installed on the upper surface of the cloth foundation 504, and The columns 508 and 510 and the inter-column 512 are erected and supported, and a beam 514 is supported on the column heads of the columns 508 and 510 and the inter-column 512.

  The fabric foundation 504 is formed of, for example, reinforced concrete, fixed in the ground, and protrudes from the ground surface by a predetermined height. The columns 508 and 510, the inter-columns 512, and the beams 514 are rectangular column materials made of wood such as straw and cedar, and the inter-columns 512 are narrower than the base 506, the columns 508 and 510, or the beams 514.

  The base 506 is fixed to the cloth foundation 504 using a plurality of anchor bolts 516 protruding from the cloth foundation 504.

  The columns 508 and 510 form a right angle with the base 506 and also with the beam 514, and the columns 508 and 510, the base 506, and the beam 514 constitute a rectangular frame 518. Inside the frame 518, first corner metal objects 520 and 522 and a bolt 528 with a washer are fixed to two corners constituted by a base 506 and a column 508 or a column 510, and a beam 514 and Second corner metal objects 524 and 526 and a bolt 528 with a washer are fixed to two corners formed by the columns 508 or 510.

  A brace 530 is attached between the diagonal corner piece 520 and the corner piece 524, and a brace 532 is attached between the corner piece 522 and the corner piece 526, and the braces 530 and 532 are arranged at the intermediate portion thereof. The intersecting portion is installed in the recessed portion 534 of the stud 512. Each brace 530, 532 is formed of a metal turnbuckle, and includes two turnbuckle round bars 536, 538, and a turnbuckle body 540 connecting these by screws, and ends of the turnbuckle round bars 536, 538 A battledore part 542 is attached to the part. The brace plate portion 542 fixes the brace 530 to the corner pieces 520 and 524 and the brace 532 to the corner pieces 522 and 526. The length of each brace 530, 532 can be adjusted by rotating the turnbuckle barrel 540.

  Next, FIG. 2 is referred about a corner metal object and a bolt with a washer. FIG. 2 is an exploded perspective view showing an example of a corner metal object and a bolt with a washer. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals.

The corner metal object 520 includes a horizontal side plate portion 546 as a first side plate portion, a vertical side plate portion 548 as a second side plate portion, a reinforcing piece 550 as a third side plate portion, and a triangular reinforcing portion 552. The horizontal side plate portion 546 and the vertical side plate portion 548 are both rectangular plate portions and form an L shape at a right angle. The horizontal side plate portion 546 is installed on the upper surface of the base 506, and the vertical side plate portion 548 is formed of the column 508. Installed on the vertical surface. The vertical side plate portion 548 and the reinforcing piece 550 form an L shape at a right angle, and are installed on the vertical surface of the pillars 508 orthogonal to each other.

  The triangular reinforcing portion 552 is a reinforcing means for maintaining the horizontal side plate portion 546 and the vertical side plate portion 548 in a right angle state, and is a right isosceles triangular plate fixed integrally to the horizontal side plate portion 546 and the vertical side plate portion 548. is there. The triangular reinforcing portion 552 divides the width W of the horizontal side plate portion 546 and the vertical side plate portion 548 into a narrow width W1 and a wide width W2 (W2> W1, W = W1 + W2), and only the width W1 is inside, ie, 1/4. Or it is installed in the width W of about 1/3. In this case, the wide width W2 side of the horizontal side plate portion 546 and the vertical side plate portion 548 is set as a fixed portion of the horizontal side plate portion 546 and the vertical side plate portion 548.

  A base 506 is attached to the horizontal side plate portion 546, and a bolt 528 with a washer is attached to the vertical side plate portion 548 with a column 508 interposed therebetween. The washer bolt 528 includes a washer portion 554 and two bolts 556 erected on the washer portion 554. The washer portion 554 is a rectangular flat plate facing the horizontal side plate portion 546 and the vertical side plate portion 548 with the base 506 or the column 508 interposed therebetween, and is the same as or similar to the horizontal side plate portion 546 and the vertical side plate portion 548. The bolts 556 are erected vertically with a certain interval in the longitudinal direction of the washer portion 554. A horizontal side plate portion 546 or a vertical side plate portion 548 is passed through the screw portion 558 of the bolt 556, and a nut 562 is attached via a washer 560.

  In order to fix the bolt 528 with a washer, a plurality of through holes 564 corresponding to the bolts 556 are formed in each of the horizontal side plate portion 546 and the vertical side plate portion 548 (within the width W2).

  Further, the horizontal side plate portion 546 is fixed to the base 506 and the vertical side plate portion 548 is fixed to the column 508 by a plurality of hexagonal coach bolts 566. In this embodiment, the fixing portions of the bolts 556 of the bolts with washers 528 are sandwiched between two portions in the longitudinal direction of the horizontal side plate portion 546 and the vertical side plate portion 548, and in the width direction of the horizontal side plate portion 546 and the vertical side plate portion 548. Hexagonal coach bolts 566 are fixed at a total of two places. Therefore, each horizontal side plate portion 546 and vertical side plate portion 548 are formed with through holes 568 for allowing the hexagonal coach bolts 566 to pass through the fixing portions of the respective bolts 556. A screw portion 570 of each hexagonal coach bolt 566 passes through the horizontal side plate portion 546 or the vertical side plate portion 548 and is screwed into the base 506 or the column 508, and the hexagon head 572 is placed on the surface portion of the horizontal side plate portion 546 or the vertical side plate portion 548. Installed.

  A brace plate portion 542 of a turnbuckle round steel 538 of the brace 530 is fixed to the triangular reinforcing portion 552. Through-holes 576 corresponding to the through-holes 574 of the battledore part 542 are formed in the triangular reinforcing part 552. Bolts 578 are passed through the through-holes 574 and 576, and bolts 578 projected into the through-holes 574 of the battledore part 542. A nut 582 is attached together with a washer 580.

  The corner metal object 520 and the washer bolt 528 in FIG. 1 have been described above, but the same applies to the corner metal object 524 and the washer bolt 528 in the B part, and the corner metal object 522 or D in the C part in FIG. The corner metal object 526 and the bolt 528 with washer are symmetrical to the corner metal object 520 or the corner metal object 524, and the shape of the constituent members is the same, and therefore, the description thereof is omitted.

  Next, referring to FIG. 3 and FIG. 4 for the joint portion of the base or the beam and the column (the fixing portion of the corner metal and the bolt with the washer). 3 is an exploded perspective view showing a joint between a base and a column in part A in FIG. 1, and FIG. 4 is an exploded perspective view showing a joint between a beam and a column in part B in FIG. 3 and 4, the same parts as those in FIG. 1 are denoted by the same reference numerals.

  As shown in FIG. 3, for example, a rectangular mortise 586 for inserting a tenon 584 formed in the column 508 is formed in the base 506, and the tenon 584 of the column 508 is inserted into the tenon hole 586. 506 and the column 508 are joined in an orthogonal state. A pillar 510 is installed on the base 506 with the same structure.

  The base 506 is formed with a through hole 587 for allowing the anchor bolt 516 to pass therethrough, a through hole 588 for passing the bolt 556 of the bolt 528 with washer, and a fixing hole 590 for fixing the hexagonal coach bolt 566. In addition, a recess 592 for inserting a washer portion 554 of a bolt 528 with a washer is formed on the bottom side of the base 506. The recess 592 is a recess having the same shape as the washer 554, and is formed by cutting the bottom surface of the base 506 in accordance with the shape and thickness of the washer 554. When the washer portion 554 is installed in the recess 592, the washer portion 554 does not protrude from the bottom surface of the base 506, but is stored in the bottom surface of the base 506, and the bottom surface of the base 506 becomes a flat surface.

  Similarly, the column 508 is formed with a through hole 588 for allowing the bolt 556 of the washer bolt 528 to pass therethrough, and a fixing hole 590 for fixing the hexagonal coach bolt 566, and on the opening surface side of the column 508. A recess 594 for inserting the reinforcing piece 550 of the corner metal piece 520 is formed. The recess 594 is a recess having the same shape as the reinforcing piece 550 and is formed by cutting out the opening surface of the column 508 in accordance with the shape and thickness of the reinforcing piece 550. When the reinforcing piece 550 is installed in the concave portion 594, the reinforcing piece 550 does not protrude from the surface on the opening side of the column 508, but is stored in the plane of the column 508, and the side surface of the column 508 becomes a flat surface. The shaft bearing wall 502 is formed on a flat surface.

  As shown in FIG. 4, for example, a rectangular mortise 598 for inserting a tenon 596 formed in the column 510 is formed in the beam 514, and the tenon 596 of the column 510 is inserted into the tenon 598, and the column 510 And the beam 514 are joined in an orthogonal state.

  The beam 514 is formed with a through hole 588 for passing the bolt 556 of the bolt 528 with washer and a fixing hole 590 for fixing the hexagonal coach bolt 566. Further, the pillar 510 is formed with a through hole 588 for allowing the bolt 556 of the washer bolt 528 to pass therethrough and a fixing hole 590 for fixing the hexagonal coach bolt 566, and on the opening surface side of the pillar 510. A recess 600 for inserting the reinforcing piece 550 of the corner metal 524 is formed. As described above, the concave portion 600 is a depression having the same shape as the reinforcing piece 550, and when the reinforcing piece 550 is installed in the concave portion 600, the reinforcing piece 550 may protrude from the opening-side surface of the column 510. However, it is stored in the plane of the column 510, the side surface of the column 510 is a flat surface, and the wooden frame bearing wall 502 is formed in a flat surface.

  As described above, the joint portion between the A portion and the B portion in FIG. 1 has been described, but the joint portion between the C portion and the D portion in FIG. 1 corresponds to fixing of the corner metal object 522 or the corner metal object 526 and the bolt 528 with a washer. For this reason, the joint part of the A part and the B part is bilaterally symmetric, and the opening shape is the same.

  Next, FIG. 5, FIG. 6 and FIG. 7 are referred to for the joining structure of the A part in FIG. 5 is a perspective view showing the joining structure of part A in FIG. 1, FIG. 6 is a front view showing the joining part of part A in FIG. 1 with the brace removed, and FIG. 7 is taken along the line VII-VII in FIG. It is the VII-VII sectional view taken along the line. 5 to 7, the same parts as those in FIGS. 1 and 3 are denoted by the same reference numerals.

  The base 506 is installed in the cloth foundation 504 by inserting the anchor bolt 516 planted in the cloth foundation 504 into the through hole 587, and the bolt 556 of the washer-attached bolt 528 is passed through the through hole 588, and the washer is inserted into the recess 592. The part 554 is installed. A washer 602 is attached to the anchor bolt 516 penetrating the base 506, and the nut 604 is tightened to fix the base 506 to the fabric foundation 504. A bolt 556 is passed through the through-hole 588, and the washer portion 554 installed in the recess 592 is confined between the fabric foundation 504 and the recess 592 of the base 506, and the bolt 556 passes through the base 506 and stands upright on the base 506. To do.

  A column 508 is erected on the base 506 fixed to the fabric foundation 504 by inserting the tenon 584 into the tenon hole 586 and inserting it. The bolt 556 is inserted into the through hole 588 and penetrated through the column 508, and a bolt 528 with a washer is attached.

  In the corner metal 520, the reinforcing piece 550 is aligned with the concave portion 594 of the column 508, and the bolt 556 of the washer-attached bolt 528 on the base 506 side is inserted into the through hole 564 of the horizontal side plate portion 546 and the through hole of the vertical side plate portion 548 is inserted. A bolt 556 of a washer-attached bolt 528 on the side of the column 508 is inserted into 564 and installed at the corner corner formed by the base 506 and the column 508. A washer 560 is attached to each bolt 556 and a nut 562 is tightened. Further, a hexagonal coach bolt 566 is inserted into each fixing hole 590, and the hexagonal coach bolt 566 is attached to the base 506 and the pillar 508.

  The triangular reinforcing portion 552 is connected to the triangular reinforcing portion 552 by inserting a brace 530 into each through hole 574 and 576 with a bolt 578, inserting a washer 580 into a bolt 578 protruding from the feather plate portion 542, and attaching a nut 582. Combine the brace 530.

  As shown in FIGS. 6 and 7, the corner metal 520 is firmly fixed to the base 506 and the column 508 with the bolt 528 with a washer and the hexagonal coach bolt 566, and the joint between the base 506 and the column 508 is the corner metal 520. Is strongly reinforced by.

  The above description is about the joining of the base 506 and the column 508 in the A part of FIG. 1, that is, the fixing of the corner metal 520, but the joining of the base 506 and the pillar 510 of the C part of FIG. Is the same.

  Next, FIG. 8 will be referred to regarding the junction structure of the B part in FIG. FIG. 8 is a perspective view showing a joining structure of a portion B in FIG. In FIG. 8, the same parts as those in FIGS. 1 and 4 are denoted by the same reference numerals.

  The beam 514 is fixed to the column 510 with two nails by inserting the tenon 596 on the column 510 side into the mortise 598 and inserting it. Bolts 528 with bolts 528 are attached to the beams 514 and the pillars 510 by inserting bolts 556 through the through holes 588.

  In the corner metal 524, the reinforcing piece 550 is aligned with the concave portion 600 of the column 510, and the bolt 556 of the washer-attached bolt 528 on the beam 514 side is inserted into the through hole 588 of the horizontal side plate portion 546, and the through hole of the vertical side plate portion 548 is inserted. A bolt 556 of a washer-attached bolt 528 on the column 510 side is inserted into 588, and is installed at a corner portion formed by the beam 514 and the column 510. A washer 560 is attached to each bolt 556 and a nut 562 is tightened. Further, a hexagonal coach bolt 566 is inserted into each fixing hole 590, and a hexagonal coach bolt 566 is attached to the beam 514 and the column 510.

  The triangular reinforcing portion 552 has a brace 530 inserted into the through holes 574 and 576 with bolts 578, a washer 580 inserted into the bolt 578 protruding toward the battledore portion 542, and a nut 582 attached to the triangular reinforcing portion 552. And the brace 530 are combined.

  In this way, the corner metal 524 is firmly fixed to the beam 514 and the column 510 by the bolt 528 with washer and the hexagonal coach bolt 566, and the joint between the beam 514 and the column 510 is strongly reinforced by the corner metal 524.

  The above has described the joining of the beam 514 and the column 510 of B part in FIG. 1, that is, the fixing of the corner metal 524, but the joining of the beam 514 and the column 508 of FIG. Is the same.

  Next, FIG. 9 is referred about the construction method of a wooden frame building. FIG. 9 is a flowchart illustrating an example of a procedure of a construction method for a wooden frame building.

  As shown in FIG. 9, the construction method of this wooden frame building includes a formation process of a fabric foundation 504 (step S1), an installation process of a base 506, columns 508 and 510, and a beam 514 (step S2), and a corner hardware. 520, 522, 524, 526 fixing and bracing 530, 532 mounting process (step S3), bracing 530, 532 tightening process (step S4), and other processes such as structural plywood mounting (step S5). It is.

  (1) Forming process of the fabric foundation 504 (Step S1)

  In this process, the cloth foundation 504 is formed of reinforced concrete at a position where the wooden frame building, that is, the wooden frame bearing wall 502 is installed (FIG. 1). Anchor bolts 516 are installed at predetermined positions on the fabric foundation 504.

  (2) Installation process of base 506, pillars 508, 510 and beam 514 (step S2)

  As a pre-process of this process, for example, the base 506, the columns 508, 510 and the beam 514 are pre-cut (FIGS. 3 and 4), and the base 506, the columns 508, 510 and the beam 514 have mortises 586, 598, and recesses 592. 594, 600, through holes 587, 588, fixing holes 590, etc. are formed.

  The base 506 is installed on the cloth foundation 504 as described above, the columns 508 and 510 are joined to the base 506, and the beams 514 are joined to the column heads of the columns 508 and 510, and the frame 518 (FIG. 1). ). A bolt 528 with a washer is attached to the base 506.

  (3) Fixing of corner metal objects 520, 522, 524, 526 and attaching process of braces 530, 532 (step S3)

  In this step, corner metal parts 520, 522, 524, and 526 are installed at the respective corners of the frame 518, nuts 562 are attached to the respective bolts 556 of the bolts 528 with washers, and hexagonal coach bolts 566 are screwed into the corner metal objects. 520, 522, 524, 526 are fixed.

  The brace 530 is fixed to the diagonal metal fittings 520 and 524, and similarly, the bracing 532 is fixed to the corner metal pieces 522 and 526.

  (4) Tightening process for bracing 530, 532 (step S4)

  In this step, the turnbuckle barrels 540 of the braces 530 and 532 are rotated and tightened.

(5) Other processes such as attachment of structural plywood (Step S5)
In this step, a heat insulating material or the like is disposed on the base 506, the pillars 508 and 510, and the beam 514 of the frame 518 (FIG. 1) forming a flat surface, and then a structural plywood or the like (not shown) is installed.

  The characteristic items of the wooden frame bearing wall 502, the wooden frame building including the wooden frame bearing wall 502, and the construction method thereof according to the first embodiment described above are listed as follows.

  (1) In the wooden frame bearing wall 502, columns 508 and 510 are erected on the base 506, and the joint portion of the shaft structure constituted by the beams 514 installed on the column heads is corner metal 520, 522, 524, The base 106, the columns 508 and 510, and the beam 514 are sandwiched and fixed between the corner metal pieces 520 to 526 and the washer portion 554 of the bolt 528 with the washer, so that the bonding strength is enhanced. In addition, the corner pieces 520 to 526 are also fixed by hexagonal coach bolts 566, and the fixation of the wood and the corner pieces 520 to 526 is strengthened. According to such a structure, an advanced earthquake-resistant structure is realized, and even if it receives stress due to an earthquake, it is not destroyed.

  (2) When 9 mm of structural plywood is pasted on both sides of the wooden frame bearing wall 502, the wall magnification is 10.4.

  (3) The width of the wall opening is further expanded and the design becomes richer. If the wall length of the bearing wall is 910 mm, an opening of 4914 mm can be formed.

  (4) Semi-external and external sashes can be attached to the part where the braces 530 and 532 are installed, and lighting and ventilation are possible while maintaining high strength.

  (5) For example, the pillars 508 and 510 are set vertically by attaching the corner metal pieces 520 to 526 having a thickness of 9 mm, and the building is not out of order.

  (6) The braces 530 and 532 and the corner metal pieces 520 to 526 are stored in the planes of the columns 508 and 510 and do not protrude to the outside, so that finishing and crafting are easy and flat, and compared to bracing with wood, Workability is good and stable.

  (7) Effective in earthquake-resistant repair work, can withstand any earthquake and contribute to regional disaster prevention.

[Second Embodiment]

  A second embodiment of the present invention will be described with reference to FIGS. 10 and 11 are perspective views showing a configuration example of a corner metal object according to the second embodiment.

  In the first embodiment, the reinforcing piece 550 is installed only on the vertical side plate portion 548. However, as shown in FIG. 10A, the reinforcing piece 606 may be installed on the horizontal side plate portion 546. The reinforcing pieces 550 and 606 may be integrated into a single L-shaped reinforcing piece 608 as shown in FIG. According to such a configuration, the corner metal object 520 can be further strengthened.

  Further, in the first embodiment, the triangular reinforcing portion 552 is installed in the middle in the width direction of the horizontal side plate portion 546 and the vertical side plate portion 548. However, as shown in FIG. 11, the horizontal side plate portion 546 and the vertical side plate portion 548 are provided. You may install in the edge of. In this case, the single L-shaped reinforcing piece 608 is used, but the reinforcing piece 550 (FIG. 2) or the reinforcing piece 606 (A in FIG. 10) may be used as in the first embodiment. .

Such a configuration is the same for the corner pieces 522 to 526.

  Examples of the above-described wooden frame bearing walls will be described with reference to FIGS. 12, 13, 14, 15, 16, 17, and 18. FIG. 12 is a diagram showing the bracing, FIG. 13 is a diagram showing the corner metal used for the A part and the B part in FIG. 1, and FIG. 14 is a diagram showing the corner metal used for the C part and the D part in FIG. 15 is a view showing a bolt and a nut, FIG. 16 is a view showing a washer-attached bolt and a nut, FIG. 17 is a view showing a washer, and FIG. 18 is a view showing a hexagonal coach bolt. 12 to 18 are examples, and in FIGS. 12 to 18, the same parts as those in FIGS. 1 to 10 are denoted by the same reference numerals.

  1. Outline of wooden frame bearing wall structure

  For the braces 530 and 532, round steel braces with Ml6 turnbuckles are used. The outline of this round bar reinforcement with M16 turnbuckle is as follows.

  (1) This round bar reinforcement with M16 turnbuckle is hereinafter referred to as “M16 round bar reinforcement”.

  (2) Outline of M16 round bar reinforcement

    Oh, component

  M16 round bar reinforcement is composed of the materials and parts shown in Tables 1 and 2. The joints such as the corner metal parts 520 to 526 and the bolts with washers 528 are made of the materials and parts shown in Table 3.

  2. Range of application of bearing walls

  (1) The range of application of the frame using M16 round bar reinforcement is a wooden frame in accordance with Article 40 to Article 49 of the Building Standards Law Enforcement Ordinance (excluding Article 48).

  (2) You must not use wall or bracing listed in Building Standard Act enforcement order Article 46 Clause 4 table 1 together.

  (3) The bearing wall shall not be provided continuously with a shared pillar. In addition, it must not be installed continuously on the 1st and 2nd floors of the same location, sharing horizontal materials such as beams.

  (4) The load-bearing wall shall be used in waterproof paper or other similar parts that are effectively waterproofed.

  3. Outline of construction specifications of bearing wall

  3.1 Shaft assembly

  (1) The cross-sectional dimension of the column material shall be 120 x 120 [mm] or more.

  (2) The cross-sectional dimensions of the base material shall be at least width 120 x height 150 [mm].

  (3) The cross-sectional dimensions of the beam material on the first floor, the stiffeners and the girders shall be at least width 120 x height 150 [mm].

  (4) The cross-sectional dimensions of the beam material on the second floor, the trunk difference material and the girder material shall be at least width 120 x height 120 [mm].

  (5) The cross-sectional dimension of the studs shall be at least 27 x 120 [mm].

  (6) The interval between the columns constituting the bearing wall is 910 [mm].

  3.2 How to install M16 round steel bars

  (1) The braces should be used as tacks.

  (2) The bracing is fixed to the shaft assembly through an L-shaped corner bracket.

  (3) The L-shaped corner brackets are for right-handed and left-handed. One bracket is fastened with two sets of 2-M16 bolts with washers and eight hexagonal coach bolts. The machining hole of the M16 bolt is about φ18 [mm].

  (4) The L-shaped corner bracket and the turnbuckle are fastened using a high-strength hexagon bolt M16. However, for tightening the high-strength bolt, it is desirable to apply a support pressure after applying tension to the turnbuckle.

  (5) When applying tension to the M16 round bar reinforcement, first tighten all turnbuckles with bare hands to eliminate looseness, and then use a tool such as a bar to introduce uniform tension sequentially throughout the whole. Therefore, it is desirable to perform tightening with a tool twice or three times. The tightening method using a tool is such that the length of the handle such as a bar is about 13 [cm] and is tightened by the arm strength of the operator. There is no excessive tightening.

  (6) The digging to place the washers, etc. shall be carried out to the minimum necessary extent.

  3.3 Load-bearing wall construction method

  The construction details of the bearing wall are shown in FIG. 1, FIG. 5 and FIG. The method of joining the stigma of the bearing wall is based on the Ministry of Construction Notification No. 1460 of 2000, and is equivalent to the calculation factor 5.4 of the bearing wall.

4). Parts materials, etc.

  (1) Turnbuckle M16 (Fig. 12)

〔material〕
Round bar steel for turnbuckle bolts: SNR400B (JISG3138)
Flat steel for turnbuckle bolts: SN400B (JISG3136)
Turnbuckle copper: SNR400A (JISG3138)
[Plating]
Hot dip galvanizing (JISH8641)
〔type〕
HDZ55

  (2) Corner hardware (Figs. 13 and 14)

〔material〕
SS400 (JIS G 3101)
[Plating]
Electro-galvanized grade 2 (JIS H8610)
2nd class 2nd class Ep-Fe / Zn5
Chromate film CM2C (JIS H8625)

  (3) M16 high strength bolt (A in Fig. 15)

〔material〕
High strength bolt F8T: M16 × 45
M16 bolt strength classification F8T SBR22 (Kunijuju No. 302 MBLT-9026)
[Plating]
Hot dip galvanizing 2 types HDZ55 (JIS H8641)
[Dimensional tolerance] Thread length +50
Head height ± 0.8
Width across flats 0 -0.8
Maximum head eccentricity 0.8
Maximum tilt of bottom and side Seating surface 1 ° Side surface 2 °
The dimensions are those before surface treatment. The finish level of the bolts shall be the average thread grade F8T-8.

(4) Nut M16 (C and D in Fig. 15)

〔material〕
M16 nut strength classification F10 SS490 (Kunijuju No. 302 MBLT-9026)
[Plating]
Hot dip galvanizing 2 types HDZ55 (JIS H8641)
[Dimensional tolerance] Nut height ± 0.35
Width across flats 0 -0.8
Maximum eccentricity of screw hole 0.8
Maximum tilt of bottom and side Seating surface 1 ° Side surface 2 °
The dimensions are those before surface treatment. The finishing degree of the nut shall be a grade F8T-8 of the average thread.

  (5) Washer M16 (E and F in Fig. 15)

〔material〕
M16 washer strength classification F35 S45C (Kunijuju No. 302 MBLT-9026)
[Plating]
Hot dip galvanizing 2 types HDZ55 (JIS H8641)
[Dimensional tolerance] Outer diameter 0 -1
Plate thickness ± 0.5
Hole diameter + 0.7 0
The plate thickness is the thickness of the original plate.

  (6) 2-M16 bolt with washer (A and B in Fig. 16)

Washer Material: SS400 (JISG3101)
Bolt JISB1180 Nominal Hex Bolt M16 × 155-4.6
JISB1180 Nominal Hex Bolt M16 × 176-4.6
JISB1180 Nominal Diameter Hexagon Bolt M16 × 215-4.6
Plating Electrogalvanization Grade 2 (JIS8610)
Type 2 secondary Ep-Fe / Zn5
Chromate film CM2C (JISH8625)
(7) Nut (C and D in Fig. 16)

    JISB1181 Hexagon nut M16 4

  (8) Round washer (Figure 17)

RW 6.0 × 58
〔material〕
Copper plate SPHC (JISG3131)
[Plating] Electric Ep-Fe / Zn5 (JISH8610)
[Dimensional tolerance] Length, width 0 -0.3
Plate thickness ± 0.45
Hole diameter +0.5 -0.2
The plate thickness is the thickness of the original plate.

  (9) Hex coach bolt (Fig. 18)

Material: SWRCH6A
Plating: Hot dip galvanizing (JISH8641)
Type HDZ35

5. Calculation of magnification

  (1) Calculation of short-term standard shear strength

  An in-plane shear test was performed on the wooden frame bearing walls using the above structures and materials, and the test results are shown in Table 4.

  (2) Examination of factors to evaluate shear strength

  Each factor for evaluating the shear strength is examined, and the reduction factor α is determined.

i) Factors for use The brace is attached to the side of the column and horizontal member of the frame, and is generally contained within the frame, and is covered with waterproof paper and other finishing materials in general construction on the outer wall side. The situation is not exposed to wind and rain. However, on the foundation, a washer (thickness 9 × width 80 × length 250 [mm]) is installed adjacent to the base surface, so that the reduction factor α1 = 0.95 for the application in consideration of these situations. .

  ii) Factors affecting the durability of steel products

  The surface treatment (plating layer) of turnbuckles (bolts, trunks) and L-shaped corners constituting the brace and the service life of the steel materials will be examined.

  Hot-dip galvanized HZ55 is used for both the turnbuckle bolt and body, and the service life is calculated to be 45 years from the standard galvanization life formula. In addition, L-shaped corner metal products will be 4.9 years in electrogalvanization + colored chromate treatment. Next, the service life of the steel material thickness is calculated from the standard service life formula of the steel material. The minimum thickness of the turnbuckle is 12 years when the thickness of the feather plate is 6 [mm], and 18 years when the L-shaped corner metal is 9 [mm]. When the service life of the steel product is estimated by adding the service life of the plating layer and the steel material, the turnback bolt is 57 years and the L-shaped corner metal is 22.9 years. Although these steels are assumed to have been exposed to harsh outdoor environments, the steel products are installed in a relatively dry environment indoors. Multiplying by the numerical value can be estimated as the useful life indoors (in a steel-frame house, the exposure factor BX is 7 in a non-exposed and dry state). From the above, the reduction coefficient α2 = 0.95 in consideration of the durability of the steel product.

 iii) Factors related to workability

  It is judged that there is a slight difference in the politeness between the construction at the time of specimen preparation and construction at the construction site, and the reduction coefficient α3 = 0.95 for the workability.

  iv) Engineering judgment (deformation performance against other walls and braces)

  The ultimate deformation angle of each test specimen exceeds 1/15 rad, and even if it reaches about 1/12 rad, there is no sudden drop in load, it has sufficient toughness, and almost corresponds to the deformation performance of other braces. The reduction coefficient α4 = 1.0 for the deformation performance is determined.

  v) Reduction factor α

  The reduction factor α is calculated from the above four factors (α1: application, α2: durability, α3: workability, α4: engineering judgment).

  Since α = f (α1 × α2 × α3 × α4) = (0.95 × 0.95 × 0.95 × 1.0), the reduction coefficient α = 0.90.

  (3) Calculation of short-term allowable shear strength and magnification

Calculate the short-term allowable shear strength and magnification in accordance with the bearing wall work method.
Short-term allowable shear strength Pa = P0 × α = 10.87 × 0.90 = 9.78 kN
Magnification = Pa / (Wall length x 1.96)
= 9.78 / (0.91 × 1.96) = 5.4

  (4) Numerical value of magnification

  As described above, the ratio of the wooden frame bearing wall of the wooden frame bearing wall according to the present invention of 91 [cm]: 5.4 is obtained, that is, the wall length obtained by striking the round steel bar with M16 turnbuckle. The magnification of the wooden frame of 91 [cm] is “5.4”.

As described above, the most preferable embodiment and the like of the present invention have been described. However, the present invention is not limited to the above description, and is described in the claims or disclosed in the specification. It goes without saying that various modifications and changes can be made by those skilled in the art based on the above gist, and such modifications and changes are included in the scope of the present invention.

The present invention relates to a wooden framed building and is useful because it has high earthquake resistance and can improve workability.

It is a perspective view showing the basic structure of the wooden frame bearing wall according to the first embodiment. It is a disassembled perspective view which shows a corner metal object and a bolt with a washer. It is a disassembled perspective view which shows the base and pillar junction part of the A section of FIG. It is a disassembled perspective view which shows the junction part of the beam of B section of FIG. 1, and a column. It is a perspective view which shows the junction structure of the A section of FIG. It is a front view which removes a brace and shows the junction part of the A section of FIG. It is the VII-VII sectional view taken on the line VII-VII of FIG. It is a perspective view which shows the junction structure of the B section of FIG. It is a flowchart which shows the procedure of the construction method of a wooden frame building. It is a perspective view which shows the structural example of the corner metal object which concerns on 2nd Embodiment. It is a perspective view which shows the structural example of the corner metal object which concerns on 2nd Embodiment. It is a figure which shows an example of bracing. It is a figure which shows an example of the corner metal object used for the A section and B section of FIG. It is a figure which shows an example of the corner metal object used for the C section and D section of FIG. It is a figure which shows an example of a volt | bolt and a nut. It is a figure which shows an example of the bolt with a washer and a nut. It is a figure which shows an example of a washer. It is a figure which shows an example of a hexagonal coach bolt.

Explanation of symbols

502 Wooden frame bearing wall 504 Cloth foundation 506 Base 508, 510 Column 512 Space column 514 Beam 516 Anchor bolt 518 Frame 520, 522 First corner metal 524, 526 Second corner metal 528 Washer bolt 530, 532 Bracing 534 Concave part 536, 538 Turn buckle round steel 540 Turn buckle body 542 Battle plate part 546 Horizontal side plate part 548 as first side plate part 548 Vertical side plate part 550 as second side plate part 550 Reinforcement piece 552 Triangular reinforcement part 554 Washer Part 556 Bolt 558 Screw part 560 Washer 562 Nut 564 Through hole 566 Hexagonal coach bolt 568 Through hole 570 Screw part 572 Hexagon head 574, 576 Through hole 578 Bolt 580 Washer 582 Nut 584, 596 Tenon 586,598 587 and 588 through holes 590 fixing holes 592, 594 recess 600 recess 602 washer 604 bolt 606, 608 reinforcing piece

Claims (5)

A base and a beam, a pair of columns erected between the base and the beam, a plurality of corner hardware installed at each corner formed by the base or the beam and each column, and a diagonal line A wooden frame bearing wall with braces fixed between the corner hardware above ,
A plurality of anchor bolts fixed to the foundation outside the interval between the pair of columns and projecting from the foundation, penetrating the foundation and fixing the foundation to the foundation;
A pair of first corner hardware installed at each corner formed by the base and each pillar;
A pair of second corner fittings diagonally to the first corner bracket and installed at each corner corner formed by the beam and each column;
The first corner piece or the second corner piece, and a plurality of bolts with washers fixed across the foundation or the beam or each column,
The first corner metal object includes a first side plate portion applied to the base, a second side plate portion formed integrally with the first side plate portion and applied to one surface portion of each pillar, and the second side plate portion. A reinforcing part formed integrally with the side plate part and fixed to the third side plate part applied to the other surface part of each column, the first side plate part and the second side plate part, and the bracing is fixed With
The second corner metal object includes a first side plate portion applied to the beam, a second side plate portion formed integrally with the first side plate portion and applied to one surface portion of each pillar, and the second side plate portion. A reinforcing part formed integrally with the side plate part and fixed to the third side plate part applied to the other surface part of each column, the first side plate part and the second side plate part, and the bracing is fixed With
The washer bolt, said across the foundation or the beam opposite to the first side plate portion, or the a washer portion facing the second side plate portion across each column is fixed to the washer portion It said base or said beam and said first side plate portion, or a plurality of bolts which pass through the respective column and the second side plate portion Te,
The bracing includes a rod-shaped turnbuckle steel having a feather plate portion formed at an end portion, and the battle plate portion is connected between the reinforcing portions of the first corner metal piece and the second corner metal piece on a diagonal line. Hanger,
Use a pillar material with a width of 120 mm or more for each pillar,
Use a base material of width 120 x height 150 [mm] or more to the base,
The first side plate portion, the second side plate portion, the third side plate portion, and the reinforcing portion of each corner piece are steel materials having a thickness of 9 mm or more,
Exceeds the provisions of the Building Standard Law Decree 46 Paragraph 4 Table 1, short-term allowable shear strength Pa is 9.78 [kN] above, short-term allowable shear walls magnification characterized der Rukoto than 5.4 Wooden frame bearing wall. In Wooden Shear Walls of claim 1 Symbol placement,
The base or the devoted to the beam first side plate portion is fixed by the coach bolt to the foundation or the beam, or fixed by coach bolts the said devoted to each pillar side second side plate portions each column A wooden frame bearing wall characterized by being made. In the wooden frame bearing wall according to claim 1 or 2 ,
A fourth side plate portion formed integrally with the first side plate portion and applied to the other surface portion of the base or the beam; or the fourth side plate portion and the third side plate portion are integrated. A wooden frame bearing wall characterized by being formed of side plates. A wooden frame building comprising the wooden frame bearing wall according to claim 1, 2 or 3 . A base and a beam, a pair of columns erected between the base and the beam, a plurality of corner hardware installed at each corner formed by the base or the beam and each column, and a diagonal line It is a construction method of a wooden frame building provided with a brace that is fixed between the above corner fittings,
Fixing the foundation to the foundation by fixing the foundation to the foundation by fixing the anchor bolt to the foundation outside the interval between the pair of pillars and projecting a plurality of anchor bolts from the foundation;
It said base and said beam, and a step of installing the said pair of pillars between said base and said beam,
A first side plate applied to the base or the beam, a second side plate formed integrally with the first side plate and applied to one surface of each pillar, and integrated with the second side plate the third side plate portion devoted to other surface portions of each pillar is formed, the first side plate portion and the corner fittings the foundation or the beam comprising the reinforcing part fixed to the second side plate portion And a step of installing in each corner formed by each of the pillars;
The foundation or opposite to the first side plate portion across the beam, or the a washer portion facing the second side plate portion across each column, the base or the beam is fixed to the washer portion and the first side plate portion, or may be fixed to the corner fittings of the respective posts and washer bolt and a plurality of bolts which pass through the second side plate portion across the base, or the beam or the respective pillar Process,
Fixing the braces to the reinforcing part of the corner metal piece arranged on a diagonal line;
Only including,
The brace comprises a rod-shaped turnbuckle steel having a battledore plate part at the end, and the battledore unit is a stake that is connected between the reinforcing portions of the corner metal on the diagonal line ,
Use a pillar material with a width of 120 mm or more for each pillar,
Use a base material of width 120 x height 150 [mm] or more to the base,
The first side plate portion, the second side plate portion, the third side plate portion, and the reinforcing portion of each corner piece are steel materials having a thickness of 9 mm or more,
Over the provisions of Article 46, Paragraph 4, Table 1 of the Building Standard Law Enforcement Ordinance, short-term allowable shear strength Pa is 9.78 [kN] or more, and short-term allowable shear wall magnification is 5.4 or more , Construction method for wooden frame buildings.

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