CN114197681B - Grouting-free bar energy consumption device - Google Patents

Abstract

The invention discloses a grouting-free bar energy consumption device, which comprises an energy consumption bar, an inner reinforcing connecting section, an outer restraining sleeve and an outer connecting section, wherein the inner reinforcing connecting section is arranged on the inner reinforcing connecting section; the energy-consuming bar comprises an energy-consuming deformation section in the middle and extrusion connecting sections at two ends; the diameters of the energy consumption deformation section and the extrusion connecting section are the same; the internal reinforced connecting section comprises an extrusion section and an external thread connecting section, and an extrusion hole is formed in the extrusion section; the extrusion connecting section of the energy-consuming bar is positioned in the extrusion hole, and the periphery of the extrusion section is subjected to annular extrusion so that the energy-consuming bar is connected with the inner reinforcing connecting section; the external connecting section comprises a restraining section and a thread section, a restraining barrel and an internal thread section are designed in the external connecting section, the external thread connecting section is connected into the internal thread section, and the extruding section is positioned in the restraining barrel; the outer layer of the energy dissipation bar is sleeved with the outer constraint sleeve, two ends of the outer constraint sleeve are positioned in the constraint cylinder, and a certain deformation gap is formed between the outer constraint sleeve and the extrusion section. The energy-consuming bar material is not weakened in the energy-consuming deformation section, and grouting is not needed between the energy-consuming bar material and the outer constraint sleeve.

Description

A non-grouting bar energy consumption device

technical field

The invention relates to the technical field of anti-seismic engineering structures, in particular to a grouting-free bar energy consumption device.

Background technique

Energy dissipation and shock absorption technology has been widely used in building structures and bridge engineering in high-intensity areas to reduce earthquake disasters. As one of the mature energy-consuming devices, metal dampers have been widely used in practical engineering because of their simple processing, stable performance and strong environmental adaptability. The buckling restrained bar energy dissipation device is an axial energy dissipation element that can achieve full cross-section yield under tension and compression. It has stable hysteretic behavior under earthquake action. This characteristic makes it have dual structural functions. It can provide the necessary lateral stiffness for the structure, and can also play the role of energy dissipation. It is one of the ideal energy dissipation devices at present.

However, in order to solve the constraining effect of the outer casing on the energy-dissipating bar, the traditional buckling restrained bar energy-dissipating device is usually grouting between the outer casing and the energy-dissipating bar. Although this processing method is cheap, it has the following problems: Prominent problems: (1) The quality of grouting is not easy to control, and it is difficult to ensure that there are equidistant gaps on the periphery of the energy-consuming bar to coordinate the compression deformation of the bar, which easily leads to local buckling of the energy-consuming bar under repeated tension and compression deformation. The fatigue performance is reduced; (2) In order to make the deformation all concentrate on the energy-dissipating bar, the middle section of the energy-dissipating bar is usually weakened. This design method not only increases the difficulty of processing, but also causes waste of materials.

CN 106760855 B discloses a bamboo-shaped round bar energy-consuming rod, the energy-consuming round rod is designed in a bamboo-shaped shape, and there is no need for grouting or adding redundant parts to restrain the outer restraining part and the circular energy-consuming rod, The structure of the energy-consuming rod is simple, but the bamboo-shaped rod also needs to weaken the energy-consuming part.

SUMMARY OF THE INVENTION

The present invention provides a non-grouting bar energy dissipation device, so as to solve the problems of cumbersome processing and poor low cycle fatigue performance of the traditional grouting type buckling restraint bar energy dissipation device, and at the same time, it also avoids the problems caused by the weakening of the bar section. The problem of material waste.

The technical scheme adopted in the present invention is to provide a grouting-free bar energy consumption device, comprising:

Energy dissipating rods, inner reinforcing connecting sections, outer restraining sleeves and outer connecting sections;

The energy-dissipating bar includes an energy-dissipating deformation section in the middle and extrusion connecting sections at both ends; the energy-dissipating deformation section and the extrusion connecting section have the same diameter;

The inner reinforcing connecting section includes an extruding section and an external thread connecting section, and an extruding hole is arranged in the extruding section; Carry out hoop extrusion to connect the energy-dissipating bar with the inner reinforcing connecting section;

The outer connecting section includes a constraining section and a threaded section, a constraining cylinder and an inner threaded section are designed inside the outer connecting section, the outer threaded connecting section is connected in the inner threaded section, and the extrusion section is located in the constraining cylinder ;

The outer restraint sleeve is sleeved on the outer layer of the energy-consuming rod, and both ends of the outer restraint sleeve are located in the restraint cylinder and have a certain deformation gap with the extrusion section.

Further, there is no need for grouting between the energy-consuming rod and the outer restraining sleeve, and only a certain gap needs to be set.

Further, a positioning screw is also included, and a positioning screw hole is provided on the outer restraint sleeve; the positioning screw restricts the deformation between the energy-consuming rod and the outer restraint sleeve through the positioning screw hole.

Further, the energy-consuming rod is made of steel rod or shape memory alloy rod.

The beneficial effects of the present invention are:

(1) The energy-dissipating bar in the present invention does not need to be weakened in the energy-dissipating deformation section, and is connected by circumferentially extruding the end and the inner reinforcing connecting section to achieve end reinforcement, which will not cause waste of materials. . The outer restraint sleeve directly constrains the energy-consuming bar without grouting, which not only reduces the construction difficulty, but also reduces the quality of the energy-consuming device itself, and also improves the fatigue performance of the energy-consuming device.

(2) The entire energy-consuming device is composed of an assembly method, and the construction is simple and convenient. Positioning screws are arranged between the energy-dissipating bar and the outer restraining sleeve to facilitate the control of the deformation gap between the two. The outer connecting section also acts as a constraint on the outer restraint tube, which ensures that the entire energy dissipation device can still work normally under the action of bending.

Description of drawings

Fig. 1 is the front view of the non-grouting bar energy consumption device disclosed by the present invention;

Fig. 2 is a sectional view along line A-A in Fig. 1;

Fig. 3 is the sectional view along B-B line in Fig. 1;

Fig. 4 is the sectional view along C-C line in Fig. 1;

Fig. 5 is the sectional view along D-D line in Fig. 1;

Fig. 6 is the connection schematic diagram of the energy-consuming bar disclosed in the present invention and the inner reinforcing connecting section;

Fig. 7 shows the structural schematic diagram of the energy-consuming bar in Fig. 6;

Fig. 8 is the structural schematic diagram of the outer restraint sleeve disclosed by the present invention;

9 is a schematic structural diagram of a grouting-free bar energy consumption device disclosed in the present invention;

Figure 10 shows a schematic structural diagram of the positioning screw in Figure 9;

11 is a schematic structural diagram of the inner reinforcing connecting segment disclosed in the present invention;

Fig. 12 is the front view of the inner reinforcement connecting segment disclosed by the present invention;

Figure 13 shows a cross-sectional view along line E-E of Figure 12;

14 is a schematic structural diagram of the outer connecting segment disclosed in the present invention;

Figure 15 is a front view of the outer connecting segment disclosed by the present invention;

FIG. 16 shows a cross-sectional view taken along line F-F of FIG. 15 .

Reference numerals: 1. Energy-consuming bar; 11. Energy-consuming deformation section; 12. Extrusion connection section; 2. Internal reinforcement connection section; 21. Extrusion section; 22. Extrusion hole; 23. External thread connection section ;3, outer restraint sleeve; 31, restraint area; 32, positioning screw hole; 4, outer connection section; 41, restraint section; 42, restraint cylinder; 43, internal thread section; 44, thread section; 5, positioning screw .

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1:

Referring to FIGS. 1-16 , the present embodiment discloses a grouting-free bar energy dissipation device, including an energy dissipation bar 1 , an inner reinforcing connecting section 2 , an outer restraining sleeve 3 and an outer connecting section 4 .

Referring to FIG. 7 , the energy-dissipating bar 1 includes an energy-dissipating deformation section 11 in the middle and an extrusion connecting section 12 at both ends; the energy-dissipating deformation section 11 and the extrusion connecting section 12 have the same diameter. The energy dissipation rod 1 is preferably made of a steel rod or a shape memory alloy rod.

11-13 , the inner reinforcing connecting section 2 includes an extruding section 21 and an external threaded connecting section 23 . The extruding section 21 is provided with an extruding hole 22 , and the diameter of the extruding hole 22 is slightly larger than that of the energy-consuming rod 1 . The diameter of the compression connecting section 12. Referring to Figures 2 and 6, the extruded connecting section 12 of the energy-consuming rod 1 is located in the extruding hole 22, and the periphery of the extruding section 21 is subjected to circumferential extrusion so that the energy-consuming rod 1 and the inner reinforcing connecting section 2 are connected at the Together. After extrusion, the bonding force generated between the extrusion connecting section 12 and the extrusion section 21 is greater than the ultimate bearing capacity of the energy-dissipating deformation section 11 . In this connection mode, the deformation is concentrated in the middle part of the energy-dissipating rod 1 by strengthening the ends, and there is no need to weaken the energy-dissipating deformation section 11 of the energy-dissipating rod 1 . The processing sequence of the inner reinforced connecting section 2 is to extrude and connect the energy-consuming rod 1 first, and then the external threaded connecting section 23 is processed, which is easy to process and has low processing cost.

14-16 , the outer connecting section 4 includes a constraining section 41 and a threaded section 44 , and a constraining cylinder 42 and an inner threaded section 43 are designed inside the outer connecting section 4 . The restraint section 41 and the restraint cylinder 42 are used to restrain the outer restraint sleeve 3; the inner thread section 43 is used to connect with the outer thread connection section 23 of the inner reinforcement connection section 2, and the thread section 44 is used in practical applications. Install connected. Referring to FIG. 2 , the external thread connecting section 23 is connected in the internal thread section 43 , and the extrusion section 21 is located in the constraining cylinder 42 .

2 and 8, the outer restraint sleeve 3 is sleeved on the outer layer of the energy-consuming bar 1, the middle of the outer restraint sleeve 3 is the restraint area 31, and the two ends of the outer restraint sleeve 3 are located in the restraint cylinder 42, and are connected with the extrusion There is a certain deformation gap between the pressing sections 21, so that the deformation of the energy-consuming rod 1 under pressure can be coordinated. There is no need for grouting between the energy-consuming rod 1 and the outer restraint sleeve 3, and only a certain gap needs to be set.

Further, referring to FIGS. 8-10 , in order to limit the sliding of the outer restraint sleeve 3 , the grouting-free rod energy dissipation device of this embodiment further includes a positioning screw 5 , and a positioning screw hole 32 is provided on the outer restraint sleeve 3 . The positioning screw 5 can also play the role of fixing the gap between the outer restraining sleeve 3 and the energy-consuming rod 1. The positioning screw 5 restricts the deformation between the energy-consuming rod 1 and the outer restraining sleeve 3 through the positioning screw hole 32 .

The energy-dissipating bar in this embodiment does not need to be weakened in the energy-dissipating deformation section, and is connected by circumferentially extruding the end and the inner reinforcing connecting section to achieve end reinforcement, which will not cause waste of material. The outer restraint sleeve directly constrains the energy-consuming bar without grouting, which not only reduces the construction difficulty, but also reduces the quality of the energy-consuming device itself, and also improves the fatigue performance of the energy-consuming device. Positioning screws are arranged between the energy-dissipating bar and the outer restraining sleeve to facilitate the control of the deformation gap between the two. The outer connecting section also acts as a constraint on the outer restraint tube, which ensures that the entire energy dissipation device can still work normally under the action of bending. The whole energy-consuming device is composed by the way of assembly, and the construction is simple and convenient.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (3)

1. a non-grouting bar energy consumption device, is characterized in that, comprises: Energy dissipation rod (1), inner reinforcing connecting section (2), outer restraining sleeve (3) and outer connecting section (4); The energy-dissipating bar (1) comprises an energy-dissipating deformation section (11) located in the middle and an extrusion connecting section (12) located at both ends; the energy-dissipating deformation section (11) and the extrusion connecting section (12) have diameters same; The inner reinforcing connection section (2) includes an extrusion section (21) and an external thread connection section (23), and an extrusion hole (22) is provided in the extrusion section (21); 1) The extrusion connecting section (12) is located in the extrusion hole (22), and the periphery of the extrusion section (21) is subjected to circumferential extrusion so that the energy-consuming rod (1) and the inner reinforcing connecting section (2) are connected to each other. Together; The outer connecting section (4) includes a restraining section (41) and a threaded section (44), and a restraining cylinder (42) and an inner threaded section (43) are designed inside the outer connecting section (4), and the outer threaded connecting section (23) ) is connected in the internal thread section (43), and the extrusion section (21) is located in the constraining cylinder (42); The outer constraining sleeve (3) is sleeved on the outer layer of the energy-consuming rod (1), and both ends of the outer constraining sleeve (3) are located in the constraining cylinder (42), and are connected with the extruder. There is a certain deformation gap between the pressing sections (21); There is no need for grouting between the energy-consuming rod (1) and the outer restraint sleeve (3), and only a certain gap needs to be set. 2. The non-grouting rod energy dissipation device according to claim 1, characterized in that it further comprises positioning screws (5), and positioning screw holes (32) are provided on the outer restraint sleeve (3); The positioning screw (5) restricts the deformation between the energy dissipation rod (1) and the outer restraining sleeve (3) through the positioning screw hole (32). 3. The grouting-free rod energy dissipation device according to claim 1, wherein the energy dissipation rod (1) is made of a steel rod or a shape memory alloy rod.

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