CN110528389A - A kind of hanging bracket of end bay Cast-in-Situ Segment - Google Patents

Abstract

The invention discloses a side-span cast-in-place suspended bracket, which includes a pre-embedded steel plate, a corbel diagonal bracing and a distribution beam. The pre-embedded steel plate includes a plurality of pieces pre-embedded on one side of a bridge pier along the bridge direction and distributed at equal intervals The first steel plate and the second steel plate, the second steel plate is located under the first steel plate and protrudes from the other side of the bridge pier, and the corbel diagonal bracing comprises a first slope whose bottom ends are obliquely buried on both sides of the bridge pier respectively. bracing and second bracing, the top and middle part of the first bracing are welded and fixed with the middle part of the first steel plate and the end part of the second steel plate respectively, and the top end of the second bracing and the end part of the second steel plate are respectively welded and fixed. Phase welding is fixed, and the distribution beam is fixed on the first steel plate, which can not only ensure the reasonable force of the structure, safety and reliability, but also ensure the construction quality, speed up the project progress, reduce the project cost, greatly reduce the workload and reduce the labor force. Good effect on labor intensity.

Description

A side span cast-in-situ section suspended bracket

【Technical field】

The invention relates to the technical field of brackets, in particular to the technical field of a side-span cast-in-place suspended bracket.

【Background technique】

Bridges are generally constructed by the cantilever method, while the cast-in-place sections of the side spans are generally constructed using floor-standing supports. However, because some bridge sites are located in high-slope deep ditches, the terrain is steep, and the foundation treatment is difficult, so the conventional floor-standing supports are difficult to meet the construction on site. In addition, in order to eliminate the unbalanced weight on both sides of the transition pier during the pouring of the cast-in-situ concrete of the side span, it is usually necessary to load sandbags, water tanks and other objects on the approach bridge side of the transition pier to counterweight the bracket. A lot of material resources and manpower, large construction costs and high safety risks.

[Content of the invention]

The purpose of the present invention is to solve the problems in the prior art, and propose a side-span cast-in-place suspended bracket, which can not only ensure reasonable stress on the structure, safety and reliability, but also ensure the construction quality, speed up the project progress, and reduce the project cost. , which greatly reduces the workload and reduces the labor intensity of workers.

In order to achieve the above purpose, the present invention proposes a side-span cast-in-situ suspended bracket, which includes a pre-embedded steel plate, a corbel diagonal brace and a distribution beam, and the pre-embedded steel plate includes a pre-embedded steel plate on one side of the pier along the bridge direction. Several first steel plates and second steel plates are equally spaced, the second steel plates are located under the first steel plates and protrude from the other side of the bridge pier, and the corbel braces include two bottom ends which are obliquely buried in the bridge pier. The first and second diagonal braces on the side, the top and middle parts of the first bracing are welded and fixed with the middle part of the first steel plate and the end part of the second steel plate, respectively, and the top end of the second diagonal bracing is connected to the third The ends of the two steel plates are welded and fixed, and the distribution beam is fixed on the first steel plate.

Preferably, several first support beams are vertically welded between the first steel plate and the second steel plate near the bridge pier.

Preferably, several second support beams are obliquely welded between the first support beam and the first diagonal brace.

Preferably, several third support beams are obliquely welded between the second steel plate and the first diagonal brace and the second diagonal brace respectively.

Preferably, transverse connecting channels are welded between the first diagonal braces and between the second diagonal braces.

Preferably, the distribution beam includes a transverse distribution beam fixed on the first steel plate and a longitudinal distribution beam fixed on the transverse distribution beam.

Preferably, it also includes a steel strand balance cable fixed between the second steel plate and the bridge pier, the steel strand balance cable is located on the side of the bridge pier where the second diagonal brace is provided, and the two ends are respectively fixed to the second steel plate through anchors and bridge piers.

Beneficial effects of the present invention: the present invention forms a suspended bracket on one side of the bridge pier through the pre-embedded steel plate, the first diagonal brace and the distribution beam, which can effectively utilize the bearing capacity of the bridge pier itself to resist the unbalanced weight during concrete pouring; The second steel plate on the other side of the outgoing pier is fixed with the second diagonal bracing pre-buried on the pier, and the tension force of the steel strand balance cable is used as the counterweight load, so as to resist the bending moment of the pier on the approach side. ; By setting the vertical first support beam near the pier of the embedded steel plate, the situation that the suspended bracket rolls over to one side of the cast-in-place section is effectively avoided.

The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is the structural representation of a kind of side span cast-in-situ suspension bracket of the present invention;

In the picture: 1-bridge pier, 2-pre-embedded steel plate, 21-first steel plate, 22-second steel plate, 3-corbel diagonal bracing, 31-first diagonal bracing, 32-second diagonal bracing, 4-distribution beam , 41-transverse distribution beam, 42-longitudinal distribution beam, 5-transverse connection channel steel, 6-first support beam, 7-second support beam, 8-third support beam, 9-steel strand balance cable.

【Detailed ways】

Referring to Fig. 1, a side span cast-in-situ suspension bracket of the present invention includes a pre-embedded steel plate 2, a corbel diagonal brace 3 and a distribution beam 4, and the pre-embedded steel plate 2 comprises a bridge pier 1-a There are several equally spaced first steel plates 21 and second steel plates 22 on the side, the second steel plates 22 are located under the first steel plates 21 and protrude from the other side of the bridge pier 1, and the corbel braces 3 include The bottom ends are obliquely embedded into the first diagonal braces 31 and the second diagonal braces 32 on both sides of the bridge pier 1 respectively. The top end of the second diagonal brace 32 and the end of the second steel plate 22 are welded and fixed, the distribution beam 4 is fixed on the first steel plate 21, the first steel plate 21 and the second steel plate 22 A number of first support beams 6 are vertically welded near the bridge pier 1, and a number of second support beams 7 are obliquely welded between the first support beam 6 and the first diagonal brace 31. The second steel plate 22 is connected to the Several third support beams 8 are welded obliquely between the first diagonal braces 31 and the second diagonal braces 32 , and transverse connecting channels 5 are welded between the first diagonal braces 31 and the second diagonal braces 32 . The distribution beam 4 includes a transverse distribution beam 41 fixed on the first steel plate 21 and a longitudinal distribution beam 42 fixed on the transverse distribution beam 41, and also includes a steel strand balance cable 9 fixed between the second steel plate 22 and the bridge pier 1 , the steel strand balance cable 9 is located on the side of the bridge pier 1 where the second diagonal brace 32 is provided, and the two ends are respectively fixed on the second steel plate 22 and the bridge pier 1 by means of anchors.

The working process of the present invention:

First, set the embedded steel plate 2 in the pier body of the bridge pier 1 as the stress point of the corbel diagonal brace 3, so that the corbel oblique brace 3 and the embedded steel plate 2 are welded firmly to form a corbel bracket as a support system, and then erect the corbel diagonal brace on it. The horizontal distribution beam 41 and the vertical distribution beam 42 form a construction platform for construction.

The present invention forms a suspended bracket on one side of the bridge pier through the pre-embedded steel plate, the first diagonal brace and the distribution beam, which can effectively utilize the bearing capacity of the bridge pier itself to resist the unbalanced weight during concrete pouring; The second steel plate is fixed with the second diagonal bracing embedded in the pier, and the tension force of the steel strand balance cable is used as the counterweight load, so as to resist the bending moment of the pier on the approach side; A vertical first support beam is set near the bridge pier, which can effectively avoid the situation that the suspended bracket rolls over to the cast-in-place section.

The above-mentioned embodiments are illustrative of the present invention, not limitations of the present invention, and any scheme after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (7)

1. A side span cast-in-place suspended bracket is characterized in that: it comprises a pre-embedded steel plate (2), a corbel diagonal brace (3) and a distribution beam (4), and the pre-embedded steel plate (2) comprises a Several equally spaced first steel plates (21) and second steel plates (22) are pre-embedded on one side of the bridge pier (1) in the bridge direction, and the second steel plates (22) are located under the first steel plates (21) and Protruding from the other side of the bridge pier (1), the corbel diagonal brace (3) includes a first diagonal brace (31) and a second diagonal brace (32) whose bottom ends are obliquely buried on both sides of the bridge pier (1) respectively , the top and middle part of the first diagonal brace (31) are welded and fixed with the middle part of the first steel plate (21) and the end part of the second steel plate (22) respectively, and the top end of the second diagonal brace (32) is fixed with the The ends of the second steel plate (22) are welded and fixed, and the distribution beam (4) is fixed on the first steel plate (21). 2. A side span cast-in-situ suspended bracket according to claim 1, characterized in that: the first steel plate (21) and the second steel plate (22) are vertically welded near the bridge pier (1). a plurality of first support beams (6). 3. A side span cast-in-place suspended bracket according to claim 2, characterized in that: a plurality of second supports are obliquely welded between the first support beam (6) and the first diagonal brace (31) beam (7). 4. A side span cast-in-place suspended bracket according to claim 1, characterized in that: the second steel plate (22) is respectively connected to the first diagonal brace (31) and the second diagonal brace (32) Several third support beams (8) are obliquely welded. 5. A side-span cast-in-place suspended bracket according to claim 1, characterized in that: a transverse connecting groove is welded between the first diagonal braces (31) and between the second diagonal braces (32). Steel (5). 6. A side-span cast-in-place suspended bracket according to claim 1, characterized in that: the distribution beam (4) comprises a transverse distribution beam (41) fixed on the first steel plate (21) and The longitudinal distribution beam (42) is fixed on the transverse distribution beam (41). 7. A side span cast-in-place suspension bracket according to claim 1, characterized in that: it also comprises a steel strand balance cable (9) fixed between the second steel plate (22) and the bridge pier (1), The steel strand balance cable (9) is located on the side of the bridge pier (1) where the second diagonal brace (32) is provided, and the two ends are respectively fixed on the second steel plate (22) and the bridge pier (1) by means of anchors.