CN214061271U

CN214061271U - Bridge

Info

Publication number: CN214061271U
Application number: CN202022899591.4U
Authority: CN
Inventors: 李伟; 蒋春海; 汪振新
Original assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-08-27
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses a bridge, it includes a plurality of support girders and at least one bridge floor main part, and all support girders extend along the length direction of bridge and set up in the lower surface of bridge floor main part, and the bridge floor main part includes bridge floor and decking, and the inside of decking has a plurality of shaped steel skeletons, and the decking passes through shaped steel skeleton to support the upper surface at the bridge floor. The utility model provides a bridge deck main part of bridge sets up the decking through the surface at the bridge bottom plate, and the inside a plurality of shaped steel skeletons that have of decking, shaped steel skeleton plays the effect as the main bearing frame structure of bridge deck main part, the mode that uses shaped steel skeleton and the cooperation of bridge bottom plate to form the decking is compared in the mode that only pricks the steel bar concreting formation decking through the board, when guaranteeing the required structural strength of bearing, tie point and erection time have been reduced further, the intensity assurance that more is favorable to the bridge, operating time is still less.

Description

Bridge

Technical Field

The utility model relates to a bridge engineering field, in particular to bridge.

Background

With the rapid development of urban road construction, viaducts gradually become an indispensable part of urban roads. For bridges spanning existing lines, the operation of the existing lines is greatly influenced in the construction process.

The existing bridge is generally in a structure of combining a steel girder and a bridge deck, the bridge deck and the steel girder are integrated through shear connectors such as angle steels or round head studs, and the bridge deck is generally formed by laying a plurality of layers of reinforcing meshes and then pouring concrete. This arrangement is complicated to construct and time and labor consuming because of the need to lay multiple layers of reinforcing mesh. More importantly, as more shear structures need to be connected, once the corrosion or fatigue problem occurs, the whole bridge can be changed into a non-combined beam form, so that serious bridge damage occurs.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that the bridge construction process is complicated in order to overcome among the prior art, and shear structure is many, has the defect of hidden danger, provides a bridge.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides a bridge, its characterized in that, bridge includes a plurality of support girders and at least one bridge floor main part, all support the girder edge the length direction of bridge extend and set up in the lower surface of bridge floor main part, the bridge floor main part includes bridge floor and decking, the inside of decking has a plurality of shaped steel skeletons, the decking passes through shaped steel skeleton form in the upper surface of bridge floor.

In this scheme, the bridge floor main part of this bridge sets up the decking through the surface at the bridge bottom plate, and the inside a plurality of shaped steel skeletons that have of decking, shaped steel skeleton plays the effect as the main bearing frame structure of bridge floor main part, the mode that uses shaped steel skeleton and the cooperation of bridge bottom plate to form the decking compares in only tying the mode that the steel bar concreting formed the decking through the board, when guaranteeing the required structural strength of bearing, further reduced shear connection point and erection time, more be favorable to the intensity assurance of bridge, operating time is still less yet.

Preferably, the extension direction of the profile steel frameworks is the width direction of the bridge, and the plurality of profile steel frameworks are sequentially arranged along the length direction of the bridge.

Preferably, the section steel framework is an i-shaped steel, the lower flange of the section steel framework is arranged on the upper surface of the bridge bottom plate, and the lower flange is connected with the bridge bottom plate in a welding mode. The I-shaped steel used for the section steel framework has enough strength, the shape of the section steel framework can be better matched with the bridge deck, and the structure is more stable.

Preferably, a reinforcing steel mesh layer is further arranged inside the bridge deck, and the reinforcing steel mesh layer is located above the steel skeleton. A layer of reinforcing mesh is laid above the profile steel framework, so that the structural stability of the reinforced steel framework can be further enhanced, and the crack expansion of the bridge deck can be controlled.

Preferably, the bridge deck is formed by casting a concrete layer on the bridge deck supporting the steel skeleton. The main forming object used by the bridge deck slab is concrete, so that the concrete is poured after the steel section framework is laid, thereby forming the complete structure of the bridge deck slab.

Preferably, the support main beam is made of H-shaped steel, an upper flange of the H-shaped steel abuts against the lower surface of the bridge deck main body, a lower flange of the H-shaped steel is supported at the top of the support pier of the bridge, and the support main beam is connected with the bridge bottom plate in a welding manner. The support girder uses H shaped steel, and convenient for material collection can simplify welding and assembly process, reduces the engineering time cost for the progress.

Preferably, when the bridge comprises at least two bridge deck main bodies, adjacent bridge deck main bodies are sequentially spliced and connected in the width direction of the bridge through lapping platforms. The bridge floor main part can be hoisted by segments, preprocessing can be conveniently carried out, and the direct panel lap joint after processing during construction can improve the construction efficiency.

Preferably, the lapping platform comprises a bottom base plate and a connecting piece, one end of the bottom base plate is fixedly connected to the edge of the bridge deck main body through the connecting piece, the other end of the bottom base plate extends towards the direction far away from the bridge deck main body, and the edge of the bridge deck main body on the adjacent side can be lapped on the surface of the other end of the bottom base plate. The bottom backing plate provides a platform for the bridge deck main bodies at the sides during lapping, the lapping speed is accelerated by the existence of the platform, the joint between the two bridge deck main bodies can be blocked, and slurry leakage can not be generated during concrete pouring.

Preferably, the lapping platform further comprises a top base plate, one end of the top base plate is fixedly connected to the edge of the bridge deck main body through the connecting piece, and the top base plate can cover the surfaces of the adjacent two edges of the bridge deck main body. The top base plate further fixes the lapped bridge deck main body and the lapped platform, and a better fixing effect is achieved.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in:

the utility model provides a bridge deck main part of bridge sets up the decking through the surface at the bridge bottom plate, and the inside a plurality of shaped steel skeletons that have of decking, shaped steel skeleton plays the effect as the main bearing frame structure of bridge deck main part, the mode that uses shaped steel skeleton and the cooperation of bridge bottom plate to form the decking is compared in the mode that only pricks reinforced concrete formation decking through the board, when guaranteeing the required structural strength of bearing, further reduced shear connection point and erection time, more be favorable to the intensity assurance of bridge, operating time is still less yet.

Drawings

Fig. 1 is a schematic cross-sectional view of a bridge according to a preferred embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic cross-sectional view taken along the direction B-B in fig. 1.

Fig. 4 is a schematic structural view of the position of the bridge lapping platform according to the preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of the position of the bridge lapping platform according to the preferred embodiment of the present invention.

Description of reference numerals:

supporting main beam 1

Bridge deck body 2

Bridge floor 21

Bridge deck 22

Section steel framework 22a

Reinforcing mesh layer 22b

Concrete cushion layer 22c

Pavement layer 22d

Bottom pad 31

Connecting piece 32

Top mat 33

Rubber layer 34

Detailed Description

The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, which are not intended to limit the scope of the invention as described herein.

As shown in fig. 1 to 5, the present embodiment provides a bridge, which includes a plurality of support girders 1 and at least one deck body 2, wherein all the support girders 1 extend in a length direction of the bridge and are disposed on a lower surface of the deck body 2, the deck body 2 includes a deck plate 21 and a deck plate 22, the deck plate 22 has a plurality of steel frameworks 22a inside, and the deck plate 22 is formed on an upper surface of the deck plate 21 by the steel frameworks 22 a.

The inside a plurality of shaped steel frameworks 22a that are provided with of deck main part 2's decking 22 of this bridge, shaped steel framework 22a plays the effect as the main bearing frame structure of deck main part 2, use shaped steel framework 22a to form steel skeleton deck slab 22, compare in the mode that only forms the reinforcing bar net through the board bundle reinforcing bar and then pour the concrete, when guaranteeing the required structural strength of bridge bearing, the reinforcement work load of job site has further been reduced, original connecting piece has been reduced again, shear structure such as peg, make the concrete, closely combine between steel sheet and the support girder, thereby material and construction installation time have been saved, and because the existence of bridge floor 21, need not additionally set up the scaffold again when carrying out concrete placement to deck main part 2, the influence to traffic is passed has been reduced.

In this embodiment, the extending direction of the steel frameworks 22a is the width direction of the bridge, and a plurality of steel frameworks 22a are sequentially arranged along the length direction of the bridge. Of course, in other embodiments, the arrangement direction of the steel skeleton 22a can be adjusted according to the actual situation.

The steel section framework 22a is welded with the bridge bottom plate 21 and bears the transverse load of the structure together with the bridge bottom plate 21.

Further, the section steel framework 22a uses i-steel, the lower flange of the section steel framework 22a is placed on the upper surface of the bridge bottom plate 21, and the lower flange is welded to the bridge bottom plate 21. The use of i-steel as the steel skeleton 22a not only provides sufficient strength, but also provides a shape that better matches the deck slab 22 and provides a more stable structure.

In addition, a mesh layer 22b is provided inside the bridge deck 22, and the mesh layer 22b is located above the steel framework 22 a. The provision of the steel mesh layer 22b can further enhance the structural stability of the steel skeleton 22a and also control the crack growth of the bridge deck 22.

In addition to the above, the entire bridge deck 22 is formed by placing a concrete layer on the bridge floor 21 supporting the steel skeleton 22a and the steel mesh layer 22 b. The main molding used for the bridge deck 22 is concrete, and thus concrete is cast after the steel skeleton 22a is laid to form the complete structure of the bridge deck 22. In the present embodiment, Ultra High Performance Concrete (UHPC) is used as the concrete for casting the bridge deck 22, so that the bridge deck 22 has ultra high durability and ultra high mechanical properties. In other embodiments, other specifications of concrete or casting material may be used.

Preferably, in other embodiments, a steel bar hole may also be left on the web of the steel skeleton 22a, and further, a steel bar is additionally provided inside the bridge deck 22 to ensure the structural strength.

In addition, a concrete cushion layer 22c and a pavement layer 22d are sequentially coated on the bridge deck 22 to complete the structure of the bridge deck body 2.

In this embodiment, the supporting girder 1 used in the bridge is H-shaped steel, an upper flange of the H-shaped steel abuts against a lower surface of the bridge deck body 2, a lower flange of the H-shaped steel supports on top of a supporting pier of the bridge, and the supporting girder 1 and the bridge floor 21 are welded together. Support girder 1 and use H shaped steel, convenient for material collection can simplify welding and assembly process, reduces the engineering time cost for the progress.

Preferably, the support girder 1 of the present embodiment uses H-section steel having a web height of 800mm or more, specifically, 900 × 300 × 16 × 28(Q345) hot-rolled section steel. Of course, in other embodiments, other specifications of H-section steel may be used.

In addition, when the bridge includes two at least bridge floor main parts 2, splice the connection in proper order along the width direction of bridge through the overlap joint platform between the adjacent bridge floor main part 2, the bridge floor main part 2 can realize subsection section hoist and mount promptly, is convenient for can carry out the preprocessing, during the construction directly carry on the panel overlap joint after processing can, improve the efficiency of construction.

The lapping platform further comprises a bottom shim plate 31 and a connecting piece 32, one end of the bottom shim plate 31 is fixedly connected to the edge of the bridge deck main body 2 through the connecting piece 32, the other end of the bottom shim plate 31 extends towards the direction far away from the bridge deck main body 2, and the edge of the bridge deck main body 2 on the adjacent side can be lapped on the surface of the other end of the bottom shim plate 31. The bottom backing plate 31 provides a platform for the bridge deck main bodies 2 at the side when in lap joint, the existence of the platform not only accelerates the lap joint speed, but also can block the joint between the two bridge deck main bodies 2, and the slurry leakage can not be generated when concrete pouring is carried out.

In this embodiment, the connecting member 32 may use a bolt assembly, and in cooperation with the structure of the connecting member 32, connecting holes are sequentially penetrated through the bottom pad 31 and the bridge deck main body 2, and the bolt assembly sequentially penetrates through the connecting holes to realize connection and fixation between the bridge deck main body 2 and the lapping platform.

The lapping platform further comprises a top pad 33, one end of the top pad 33 is fixedly connected to the edge of the bridge deck main body 2 through a connecting piece 32, and the top pad 33 can cover the surfaces of the edges of two adjacent bridge deck main bodies 2. The top shim plate 33 is further fixed between the bridge deck main bodies 2 after the bridge deck main bodies 2 on the side are erected on the bottom shim plate 31, and therefore better stability is achieved.

In this embodiment, the top shim plate 33 may be a channel steel, and an opening of the channel steel is disposed upward. The purpose of using the channel-section steel is to provide a plane which is connected with the bridge deck main body 2 in a welding mode, namely, the edges of the channel-section steel attached to the bridge deck main body are welded with the bridge deck main body, so that the structural stability and the connection effect of the channel-section steel are enhanced.

In addition, preferably, in this embodiment, a waist-shaped hole may be disposed on the surface of the top pad, the connecting member is located in the waist-shaped hole, and the top pad can move relative to the bridge deck along the extending direction of the waist-shaped hole, so as to realize pushing along the extending direction of the waist-shaped hole after the lateral bridge deck main body is lapped, thereby realizing limiting and fixing along the vertical direction.

Preferably, a rubber layer 34 may be further disposed between the bottom pad 31 and the bridge floor 21 to protect the surface of the bridge floor 21.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides a bridge, its characterized in that, bridge includes a plurality of support girders and at least one bridge floor main part, all support the girder edge the length direction of bridge extend and set up in the lower surface of bridge floor main part, the bridge floor main part includes bridge floor and decking, the inside of decking has a plurality of shaped steel skeletons, the decking passes through shaped steel skeleton form in the upper surface of bridge floor.

2. The bridge according to claim 1, wherein the extension direction of the steel frameworks is the width direction of the bridge, and a plurality of the steel frameworks are sequentially arranged along the length direction of the bridge.

3. The bridge according to claim 1, wherein the steel skeleton is an i-beam, the lower flange of the steel skeleton is disposed on the upper surface of the bridge floor, and the lower flange and the bridge floor are welded.

4. The bridge according to claim 1, wherein a reinforcing mesh layer is further provided inside the bridge deck, and the reinforcing mesh layer is positioned above the steel skeleton.

5. A bridge according to claim 1, wherein the deck slab is formed by casting a concrete layer on the bridge deck supporting the steel skeleton.

6. The bridge according to claim 1, wherein the supporting girders are H-shaped steel, upper flanges of the H-shaped steel abut against a lower surface of the deck body, lower flanges of the H-shaped steel are supported on tops of supporting piers of the bridge, and the supporting girders are welded to the bridge bottom plate.

7. A bridge according to any one of claims 1 to 6, wherein when the bridge comprises at least two deck bodies, adjacent deck bodies are connected by overlapping platforms in series across the width of the bridge.

8. A bridge according to claim 7, wherein the landing comprises a bottom pad and a connector, one end of the bottom pad being fixedly connected to an edge of the deck body by the connector, the other end of the bottom pad extending away from the deck body, the edge of the deck body on the adjacent side being able to be landed on the surface of the other end of the bottom pad.

9. A bridge according to claim 8, wherein the landing further comprises a top pad, one end of the top pad being fixedly connected to an edge of the deck body by the connecting member, the top pad being capable of covering the edge surfaces of two adjacent deck bodies.