WO1997038166A1

WO1997038166A1 - Rapidly assembled overpass

Info

Publication number: WO1997038166A1
Application number: PCT/CN1996/000025
Authority: WO
Inventors: Fuchang Lu
Original assignee: Fuchang Lu
Priority date: 1996-04-10
Filing date: 1996-04-10
Publication date: 1997-10-16
Also published as: AU5330896A

Abstract

The invention involves a modular overpass and its construction method, the overpass consists of elongated foundation members (2), pillars (3) which are connected with the elongated foundation members by screw, bolt and/or welding, transverse beams (4) supported by the pillars (3), longitudinal beams (5) placed on the transverse beams (4), bars (6) for longitudinal beams (5) connecting transversely between the adjacent beams (5), arch shaped span units (7) which are between the adjacent pillars (3) in the overpass portion, ramp units (8) which are placed between the adjacent pillars (3) in the ramp portion. The method is as follows: various prefabricated elements are each preformed, then are transported to the site to assemble.

Description

Rapid assembly overpass and field

The invention relates to an overpass and a construction method thereof, and in particular to an overpass structure and a construction method thereof that can be quickly constructed without the need for an additional construction site, and the overpass is particularly applicable to a traffic flow in a prosperous area in a city and it is impossible to have construction In the case of the site, it is used for the construction of the Onai Interchange, and it can be dismantled and assembled, so it can be reused for mass production. current technology

The existing overpasses mainly include steel bridges, cement concrete bridges and other types of bridges. During construction, all existing overpasses must have sufficient auxiliary force to open the construction site to store various equipment and carry out construction operations. It is very difficult to set up a bridge in the bustling section of the city. There are many buildings in the metropolitan area, and the traffic is heavy. If the traffic is interrupted, relocating the residents will inevitably cause great difficulties, even impossible. Moreover, the existing interchanges are all integral reinforced concrete structures or steel frames riveted, welded structures, and once damaged due to war or earthquake, it is very difficult to completely remove them. Reconstruction and demolition are also laborious and time consuming. Description of the invention

For this reason, the purpose of the present invention is to propose an overpass construction method and the structure of the overpass without the need for additional facilities. These overpasses can be directly constructed and assembled on the quasi-road surface, without the need for additional facilities and construction sites. Digging the earth to build another foundation, just transport the prefabricated parts to the site for assembly. In addition, the construction period is short, and disassembly is also convenient. In addition, it is cheap and durable.

In order to achieve the above object, the present invention proposes a fast-assembled permanent automobile pedestrian overpass, which has an approach bridge section and a main bridge section and includes bridge columns, beams, longitudinal beams, bridge deck members, guardrails, and reflective film equipment, It is characterized in that the overpass also has:

A strip foundation, which is a rectangular concrete preform in the shape of a right-angled hexahedron, is embedded with a plurality of embedded steel plates with steel bars, and the steel plate and the strip foundation have holes for passing expanded ruthenium. There are several hooks on the strip foundation; Embedded steel plate and strip The top surface of the foundation is flush, and the strip foundation is set in a shallow pit on the road surface; the two ends of the bottom surface of the foundation are respectively provided with a plurality of spaced-apart longitudinally extending arch arc ribs;

The bridge pillar is a steel prefabricated part with a support steel plate fixed at both ends of the I-shaped cross-section; the support steel plate has several holes for passing bolts; the bridge pillar can be different according to the bridge height where it is located. Height; the bridge pillar is erected on the embedded steel plate of the strip foundation, and is fixed to the strip foundation by expansion screws and / or welding;

The beam is a steel prefabricated part with an I-shaped cross section, and the I-shaped wings on both ends of the beam are provided with a plurality of holes for penetrating bolts; the beam is spanned on two transversely adjacent bridge posts, and the two ends of the beam are The support steel plates of the bridge pillars are fixed by bolts and / or welding through holes in them;

The longitudinal beam is a steel prefabricated part with an I-shaped cross-section, and is bent into an arch shape along the longitudinal centerline of the I-shaped web, and the I-shaped wings on both ends thereof each have a plurality of holes for passing bolts; The board is provided with a plurality of holes for installing longitudinal beam connecting rods; the longitudinal beams are spanned between two longitudinally adjacent transverse beams, and the upper ends of the beams and the upper beams of the beams are pressed and fastened by means of holes at both ends of the beams. And / or welding;

The longitudinal beam connecting rod is a tubular prefabricated part, and nuts are respectively fixed at both ends thereof; the longitudinal beam connecting rod is installed between two transversely adjacent longitudinal beams through holes in the web of the longitudinal beam;

The prefabricated arch is a frame-shaped reinforced concrete prefabricated part, the height and width of which are adapted to the height of the bridge pillars and the distance between the two adjacent longitudinal columns, respectively. Between the columns; the inside of the top of the prefabricated arch is arched;

The bridge head stop is an L-shaped reinforced concrete prefabricated part, which has depressions and protrusions on both sides of the bottom, and a number of bridge head stops are abutted longitudinally. The ω depressions and protrusions of adjacent bridge head stops are wedged into each other and arranged on the approach bridge. The two sides between the longitudinally adjacent two bridge pillars in the segment cover the space between the bridge pillars in the vertical portion; the top edge of the vertical plane is inclined, and the inclination is adapted to the inclination of the approach bridge segment;

The deck structure is a steel plate, which is welded to the top of the arched longitudinal beam, and the adjacent longitudinal beams are flattened with filling materials.

The invention also proposes a construction method of a fast-assembled permanent automobile pedestrian overpass, which is characterized in that the steps of the construction method are:

1. At the construction site of the non-overpass, prefabricate the following components:

(1) The strip foundation is prefabricated by the method of manufacturing a reinforced concrete prefabricated part. The strip foundation is a long strip in the shape of a right-angled hexahedron, and a plurality of embedded steel plates with steel bars are embedded at predetermined intervals during the prefabrication. The surface is flush, and the steel plate is formed with the strip base on which it is located. A plurality of holes for penetrating the expanded spiral ruthenium, a plurality of spaced-apart longitudinal ribs are integrally formed at both ends of the lower surface of the strip base, and a plurality of hooks are embedded;

(2) The bridge pillar is welded with steel plates to form a number of I-shaped bridge pillars, and support steel plates perpendicular to the bridge pillars are welded to the two ends of the bridge pillars respectively. Holes to form bridge pillars, and the height of each bridge pillar is adapted to the height of the bridge where it is located;

(3) Beams, which are formed by welding steel plates to form I-shaped beams, and a plurality of holes are respectively drilled on the wing plates at both ends of the beams to pass through the bolts;

(4) The longitudinal beam is cut in advance with a convex arc in the upper part; a concave web in the lower part, which is bent to form a curved wing spanner adapted to the convex arc and the four arcs of the web, and the web is welded to the wing spanner to form A number of arched longitudinal beams whose cross sections are curved along the longitudinal centerline are I-shaped, and several holes are drilled on the wing plates at both ends for penetrating bolts; the spans of each longitudinal beam are adapted to the distance between adjacent arch beams;

(5) the longitudinal beam connecting rod, cutting the pipe, and welding the nuts at its two ends to form a longitudinal beam connecting rod, the length of which is adapted to the distance between adjacent longitudinal beams;

(6) Prefabricated arch, prefabricated frame-shaped prefabricated arches made of reinforced concrete, which are arched on the inner top, and embedded with several hooks; their dimensions and widths are respectively equal to the height of the space between the bridge columns adjacent to the main bridge section and Adaptable width

(7) The bridge head stop is a prefabricated reinforced concrete bridge head stop. The vertical slope of the top edge of the vertical plane is compatible with the approach section inclination, and the height is compatible with the bridge pillar height of the approach bridge section. The distance between two adjacent bridge columns of the bridge section is the same, and a number of hooks are embedded.

(8) Cut the deck steel plate of appropriate size.

2. Transport the prefabricated parts to the bridge site;

3, the foundation is buried in a shallow pit on the road;

4. The bridge pillars are sequentially erected on the embedded steel plate of the foundation in sequence, and the expansion screws are installed in the holes thereon, and the bridge pillars are fixed on the foundation with expansion screws and / or welding;

5. Straddle the crossbeam on two transversely adjacent bridge posts, pass through the holes provided thereon with cymbals, and use the cymbals and / or welding to fix the crossbeam to the bridge posts;

6. The arched longitudinal beam is spanned on two longitudinally adjacent transverse beams, and bolts are arranged in the holes at the two ends of the arched beam. Tighten the bolts to slightly deform the arched longitudinal beams to form prestress. Use the bolts and / or Welding the longitudinal beams and crossbeams;

7. Set the link of the stringer between the stringers and screw the stringer through the hole on the belly of the stringer to install the stringer between the stringers;

8. Fill the IHJ depressions adjacent to each arched longitudinal beam with mortar; 9. Weld the bridge deck steel to the arched top of the arched longitudinal beam;

1 0. Installing guardrails and reflective film equipment will complete the construction of the overpass.

It is also possible to lay non-slip material on the bridge deck steel.

It can also be filled with sand and other filling materials between the opposite L-shaped bridge heads. Brief description of the drawings

FIG. 1 is a schematic elevation view of an overpass proposed by the present invention;

2A and 2B are a schematic plan view and a deflecting view of the strip foundation, respectively;

Figures 3 A and 3 B are a schematic front view and a longitudinal schematic view of the two ends of the bridge column, respectively; Figures 4 A and 4 B are a schematic side view and a top view of the beam, respectively;

5A and 5B are a schematic bottom view and a side view of a stringer, respectively;

Figures 6 A and 6 B are a schematic cross-sectional view and a side view of a stringer link, respectively; Figures 7 A, 7 B, and 7 C are a front view, a side view, and a top view of a prefabricated arch, respectively.

Figures 8A and 8B are schematic front and side views of the bridgehead, respectively. Best example

As shown in FIG. 1, the overpass bridge 1 proposed by the present invention has a main bridge section 1-1 and an approach bridge section 1 · 2. The overpass 1 is composed of a plurality of foundations ² , a number of bridge columns 3, a number of beams 4, a number of longitudinal beams 5, a number of longitudinal beam links 6, a number of prefabricated arches 7, a number of bridge heads 8, a guardrail, and a reflective film device.

As shown in FIG 2 A, 2 B, the article group is a prefabricated reinforced concrete member 2, as long as a right-angled hexahedral shape, having three integrally reinforced ² - contented of embedded steel bars 21 embedded in the base 1 The surface of the embedded steel cymbal ² · 1 is flush with the long surface of the strip base 1. The steel plate 2.1 and the strip base 1 on which it is located have ⁸ holes 2.5 for installing expanded ruthenium ruthenium. uniformly spaced apart on the substrate 2 having three embedded four hook ² - 2 bar embedded in the base 2, the lower surfaces of both the base strip ² having a arched arcuately curved ribs laterally spaced apart longitudinally extending 2. 3, the ribs ^2.3 bar base ² prevents lateral displacement.

As shown in Figures 3A, 3B, the bridge pillar 3 is a steel body welded into an I-shaped column, and its two ends are respectively welded with a support steel wrench ³ · 1 perpendicular to its longitudinal axis, and the lower end supports the steel wrench 3. There are 8 holes on the 1 for the expansion of osmium ruthenium. The size and position of the holes are the embedded steel plates 2.1. The size and position of the holes on the 2.1 are adapted. The size and position of the holes on the upper support steel are related to the beams. the hole ends ⁴ - 1 adapt sizes. There are several bridge columns ³ , the height of which corresponds to the height of the bridge where it is located. As shown in FIGS. 4A and 4B, the beam 4 is a beam member welded by steel plates, and the wing plates at both ends of the beam 4 have holes 41 for bolt connection with the bridge column 3 and the stringer ⁵ .

As shown in Figures 5 A and 5 B, the stringer 5 is a welded steel plate prefabricated with an I-shaped cross-section. The web 5 »3 has a convex arc at the upper edge and a concave arc at the lower edge. 5.4 Compatible with the upper and lower arcs of the web. After welding, they are preformed into arches that bend along the longitudinal centerline. The ends of the lower edge wing plate 5 * 4 have a number of beams and beams. 4 There are holes 5.1 for connecting and passing bolts, and there are several holes ⁵ · 2 on the web 5.3 for installing the longitudinal beam connecting rods 6. The holes ⁵ · 2 are two groups of three.

As shown in Figs. 6A and 6B, the stringer link 6 is a prefabricated pipe fitting, and nuts 6.1 are welded to the two ends thereof, respectively.

As shown in Figures 7 A and 7 B, the prefabricated arch 7 is a reinforced concrete prefabricated part. The prefabricated arch 7 is frame-shaped, and the inside top is arch-shaped. Its height and width are between the two bridge pillars 3 at the main bridge section. The width and length are adapted. And has a number of hooks 7.1.

As shown in Figs. 8A and 8B, the bridge head stop 8 is a reinforced concrete prefabricated part with an L-shaped cross section. The top edge of the vertical face is inclined, and the inclination and the inclination are the same as those of the approach bridge 1.2. The heights are the same. The two sides of the horizontal face have depressions 8.2 and bulges 8, 3, respectively. The bridgehead arch 8 abuts side to side. The four depressions 8, 2 and bulges on the adjacent bridgehead arch 8. 8.3 wedged into each other, the width of the η bridgehead arches 8 is the same as the width between the two bridge pillars at the approach bridge section (n is a tuck), and the bridgehead arch 8 also has a hook 8, 1.

In the strip foundation 2 arranged in the shallow pit excavated on the road surface, the bridge pillar 3 stands on the embedded steel plate 2.1 with the strip foundation 2 respectively, and the bridge pillar 3 and the strip foundation 2 are connected with expanded ruthenium and / or welding. . The cross beams 4 are respectively erected on the bridge pillars ³ , and are connected to the bridge pillars 3 by using bolts and / or welding. The longitudinal beams 5 are respectively erected on the cross beams 4, and the two ends thereof are fastened to the cross beams 3 with screws. Connection, so that the longitudinal beam 5 tends to bend further to form a prestress, each longitudinal beam 5 is abutted against each other, and can be fixed to the transverse beam 4 by welding, and the longitudinal connecting rods 6 are respectively located at the longitudinal beam 5 In the meantime, the side member link 6 is attached between each side member 5 by using a nail to pass through a hole 5.2 in the web 5.3. The prefabricated arches 7 are located laterally overlapping each other between the bridge pillars 3 below the main bridge section. The bridge head arches 8 are arranged vertically in the two columns between the bridge columns 3 of the approach bridge section. And its vertical face covers both sides of the approach bridge section, and the opposite side of the bridge head arch 8 is filled with sand and soil. D3 P between the longitudinal beams 5 is filled with concrete. The bridge deck is laid on the longitudinal beams 5, and the bridge deck is fixed to the longitudinal beams 5 by welding at the vertices of the arches of the longitudinal beams 5. The anti-slip layer is laid on the bridge. On the surface plate, guardrails and reflective film equipment are erected on both sides of the bridge surface plate. The overpass construction method proposed by the present invention is to prefabricate a bridge assembly at a non-construction site in advance, and then transport the prefabricated components to the construction site group to establish an overpass, which is characterized by:

1. Prefabricated several bases 2. The base 2 is shown in Figures 2A and 2B;

Several precast bridge columns 3 are prefabricated, and the bridge columns 3 are shown in FIGS. 3A and 3B;

A number of prefabricated beams 4 are prefabricated, as shown in Figs. 4A and 4B;

A number of prefabricated longitudinal beams 5 are prefabricated, as shown in Figs. 5A and 5B.

Prefabricated longitudinal beam links 6 are shown in Figs. 6A and 6B; prefabricated prefabricated arches 7 are shown in Figs. A and 7C; The bridge crotch 8 is shown in Figs. 8A and 8B;

2. Excavation of several vent holes on the road surface of the construction bridge,

3. Ship the above prefabricated parts to the bridge construction site, and then,

(1) Put the preparation base 2 in each shallow pit separately;

(2) The bridge pillar 3 is erected on the embedded steel plate 2, 1 of the strip foundation 2, and the bridge pillar 3 and the strip foundation 2 are fixed to each other by expansion nails and / or welding;

(3) The beam 4 is erected on the bridge pillar 3, and its two ends are fixed to the bridge pillar 3 with bolts and / or welding;

(4) The longitudinal beams 5 are mounted on the two ends of each cross beam 4 with the longitudinal Non end of the beams, and the ends of each longitudinal beam 5 and the end of the spare beam 4 are tightened with bolts, and then welded to make them Fixedly connected to the end of the beam 4;

(5) Place each longitudinal beam link ⁶ between the spare longitudinal beams ⁵ and screw the holes 5, 2 on the abdominal plates 5, 3 of the longitudinal beam 5 with screws to screw into the 嫘 at both ends of the longitudinal link ⁶ In the mothers 6, 1, the stringer link 6 is placed between the stringers 5;

(6) The prefabricated arches 7 are arranged laterally overlapping between the bridge pillars 3 of the bridge section;

(7) The bridgehead stall 8 is vertically arranged between the auxiliary bridge pillars 3 of the approach bridge section, and the space between the bridgehead stall 8 is filled with sand and stone;

4. Fill concrete in the ω part where the stringer 4 meets;

5. Lay the bridge deck on the prepared stringer ⁴ and weld them together at the apex of the arched stringer 4.

6. Lay a non-slip layer on the bridge deck and install guardrails and reflective film equipment. Industrial applicability

Since the above-mentioned overpass and the construction method thereof of the present invention are not manufactured at the construction site of the bridge, there is no need to install another construction site, as long as it is buried in a shallow excavation pavement The foundations can then be bridged by screws, bolts, and / or welding, so it is not only fast and convenient to build, but also can be erected on urban streets with large traffic flows, without the need to dismantle adjacent buildings. It is necessary to change the prepared pipeline under the road, and it is not necessary to dig deep earthwork to build the bridge foundation, so it is very suitable for building bridges in urban areas. In addition, continuous arched longitudinal beams are used and the longitudinal beams are pre-stressed during assembly, so the structure is very reasonable, so material is also saved; there is a prefabricated arch under the main bridge section, a bridge head stop under the approach bridge section, and longitudinal sections between the longitudinal beams. Beam connecting rod, so the overpass is very stable and durable.

Claims

Profit requirements

1.A fast assembly permanent

Automobile pedestrian comprehensive overpass. The overpass has an approach bridge section and a main bridge section and includes bridge pillars, beams, longitudinal beams, bridge deck members, barricades, and reflective film equipment. It is characterized in that the overpass also has:

A strip foundation, which is a rectangular concrete preform in the shape of a right-angled hexahedron, in which a plurality of embedded steel plates with reinforcing steel are embedded, and the steel plate and the strip foundation thereon have a plurality of holes for passing expansion screws; There are also several hooks on the strip foundation; the embedded steel plate is flush with the top surface of the strip foundation, and the strip foundation is buried in a shallow pit on the road surface; the two ends of the bottom surface of the strip foundation are respectively provided with a plurality of spaced-apart longitudinally extending arch arc bars. Article

The bridge pillar is a steel prefabricated piece with a support steel plate fixed at both ends of the I-shaped cross section; the support steel plate has a plurality of holes for penetrating bolts; the bridge pillars can be different according to the height of the bridge where they are located. The bridge post is erected on the embedded steel plate of the strip foundation, and is fixed to the strip foundation by expansion nails and / or welding;

The beam is a steel prefabricated part with an I-shaped cross section, and the I-shaped wing plates at both ends thereof each have a plurality of holes for penetrating bolts; the beam is straddled on two horizontally adjacent bridge posts, and the two ends thereof Bolted and / or welded with the support steel plate of the bridge column through holes in it;

The longitudinal beam is an I-shaped steel prefabricated section, and is bent into an arch shape along the longitudinal centerline of the I-shaped web, and the I-shaped wing poles at both ends thereof each have a plurality of holes for passing bolts; the I-shaped web There are several holes on the lever for installing longitudinal beam connecting rods; the longitudinal beams are spanned between two longitudinally adjacent transverse beams, and the upper ends of the beams and the upper beams of the beams are bolted to each other by means of bolts. And / or welding;

The longitudinal beam connecting rod is a tube-shaped prefabricated part, and two ends are fixedly connected to the females at each end; the longitudinal beam is secured between two transversely adjacent longitudinal beams through the holes on the webs of the longitudinal beams with screws;

The prefabricated arch is a frame-shaped reinforced concrete prefabricated part, the height and width of which are adapted to the height of the bridge pillars and the distance between the two adjacent longitudinal columns, respectively. Between the columns; the inside of the prefabricated top is arched;

The bridge head stop is an L-shaped reinforced concrete prefabricated part, which has C £ J depressions and protrusions on both sides of the bottom, and a number of bridge head stops are abutted longitudinally. The ω depressions and protrusions of adjacent bridge head stops are wedged and arranged. On the two sides between the longitudinally adjacent bridge columns in the approach section, the vertical part covers the space between the bridge columns; the vertical edge of the vertical plane is inclined, and the inclination is similar to that of the approach bridge section. Adapt

The bridge deck structure is a steel plate, which is welded to the arched top of the arched longitudinal beam, and the adjacent longitudinal beams are flattened with filling materials.

2. A construction method of a permanent automobile pedestrian overpass assembled by fans, characterized in that the steps of the construction method are:

① At the construction site of the non-overpass, prefabricate the following components:

(1) A strip foundation, which is prefabricated by a method of manufacturing a reinforced concrete prefabricated part. The strip foundation is a long strip having a right-angled hexahedron shape, and a plurality of embedded steel plates with steel bars are embedded at predetermined intervals during prefabrication. The top surface of the foundation is flush, and the steel plate and the strip base are formed with a plurality of holes for swollen swollen ruthenium. The two ends of the bottom surface of the strip are integrally formed with a plurality of spaced-apart longitudinally extending ribs. Buried several hooks;

(2) The bridge pillar is welded with steel plates to form a number of I-shaped bridge pillars, and the two ends of the bridge pillars are respectively welded with supporting steel plates perpendicular to the bridge pillars, and the steel plates are drilled along a number of holes for bolts to pass through. The bridge pillar is formed, and the height of the spare bridge pillar is adapted to the height of the bridge where it is located;

(3) Beams, which are formed by welding steel plates into I-shaped beams, and a plurality of holes for drilling the bolts are respectively drilled on the wing plates at both ends;

(4) The longitudinal beam is cut in advance with a convex arc in the upper part; the lower part is a web with a concave arc; Sections curved along the longitudinal centerline are I-shaped arched longitudinal beams, and several holes for drilling bolts are drilled on the wing plates at both ends; the spans of each longitudinal beam are adapted to the distance between adjacent arch beams;

(6) Prefabricated arch, prefabricated frame-shaped prefabricated arches made of reinforced concrete, the inside top of which is arched, and several hooks are embedded; its height and width are respectively the height and width of the space between the bridge columns adjacent to the main bridge section Appropriate

(8) Cut the bridge steel of appropriate size.

②, transport the above-mentioned prefabricated parts to the bridging site;

③ The strip foundation is buried in a shallow pit on the road surface;

④ The bridge pillars are erected in sequence on the embedded steel plate of the strip foundation, and installed with expansion screws. In the hole thereon, the bridge post is fixed on the foundation with expansion screws and / or welding;

⑤ Cross the beam on two transversely adjacent bridge pillars, pierce the bolts through the holes provided on it, and use the bolts and / or welding to fix the beams to the bridge pillars;

⑥ The arched longitudinal beam is spanned on two longitudinally adjacent beams, bolts are arranged in the holes at both ends, and the bolts are tightened to slightly deform the arched longitudinal beams to form a prestress. With the bolts and / Or welding to connect the longitudinal beam and the transverse beam;

⑦, the longitudinal beams are connected and secured between the longitudinal beams, and the ruthenium is passed through the hole on the belly of the longitudinal beams, and the longitudinal beam connecting rods are installed between the longitudinal beams;

瑱 Flatten the M depression of the abutment of the prepared arched longitudinal beam with mortar;

焊接 Weld the bridge deck steel to the arched top of the arched longitudinal beam;

⑩, install guardrails and reflective film equipment, then complete the construction of the overpass.