CN221421702U - Steel structure bracket capable of simultaneously meeting requirements of cast-in-situ and bridging of large cantilever pier top beam section - Google Patents

Abstract

The utility model discloses a steel structure support capable of simultaneously meeting the requirements of cast-in-situ and bridging of a girder erection machine of a large cantilever pier top beam section, and relates to the technical field of bridges. The advantages are that: the mode of pre-buried steel sheet is adopted, needs extra basic processing among the prior art is avoided, practices thrift the engineering time and practices thrift the cost, and the support can make things convenient for dismouting and transportation simultaneously, facilitates the use.

Description

Steel structure bracket capable of simultaneously meeting requirements of cast-in-situ and bridging of large cantilever pier top beam section

Technical Field

The utility model relates to the technical field of bridges, in particular to a steel structure bracket capable of simultaneously meeting the requirement of a large cantilever pier top beam section cast-in-situ and a bridge girder erection machine.

Background

The short line matched precast box girder constructed by the rigid frame precast assembly process is a prestressed concrete girder bridge constructed by the segmental precast assembly process in the combined form of the rigid frame pier top block and the precast standard girder segment, compared with the traditional segmental precast assembly box girder which is of a full precast assembly structure, the structure has the advantages of short installation period and attractive appearance of the traditional segmental assembly box girder, and meanwhile, the structural form of the rigid frame pier top block shortens the transverse distance between the pier body and the bearing platform, reduces the occupied area of the lower structure and foundation of the bridge and reduces the engineering cost.

Meanwhile, in actual processing, a bracket is required to be erected to realize the bridge crane carrying and pier top cast-in-situ processing, and the bridge crane and the fully-loaded hanging beam are ensured to be safe and reliable, so that the existing bracket is erected to construct a concrete strip foundation, and the defects are that extra foundation treatment is required, the construction time is long, and the cost is high.

Disclosure of utility model

The utility model aims to solve the defects in the prior art, and provides a steel structure bracket which simultaneously meets the requirements of cast-in-situ and bridging of a girder erection machine of a large cantilever pier top beam section.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a satisfy cast-in-place of big cantilever mound back timber section and steel construction support of bridge crane frame roof beam simultaneously, includes two girders that set up in mound top both sides, two the bottom of girder all is connected with a plurality of pillars through a plurality of off-load pieces, and a plurality of the pillar is connected with a plurality of parallel connection and bracing respectively, the cushion cap is installed to the bottom of pillar and is provided with the pre-reinforcement device that improves the support stability and avoid the site hardening in the cushion cap.

Preferably, the pre-reinforcing device comprises a plurality of anchor bars buried in a bearing platform, steel plates are welded at the tops of the anchor bars, and the steel plates are welded and fixed with a plurality of struts.

Preferably, a pier pad is connected to the underside of each pillar, and the pier pad is fixedly connected to the pillar by a plurality of bolts.

Preferably, the plurality of struts are composed of two symmetrically arranged support groups, each support group comprises a stand column and an inclined column, and the bottom pier pads of one group of stand columns and inclined columns are connected through reinforcing members which are horizontally arranged.

Preferably, the support column and the average joint adopt an I-steel structure.

Still further, the girder includes crossbeam and longeron, the longeron is fixed at the top of pillar, the crossbeam sets up a plurality ofly and all fixes at the top of longeron perpendicularly.

Compared with the prior art, the utility model has the advantages that:

The support is arranged to bear the load of the cast-in-situ pier top and the bridge crane, compared with the traditional support, the concrete strip foundation to be constructed is erected, the additional foundation treatment is avoided by adopting the mode of embedding the steel plates, so that the construction time is saved on one hand, the cost is saved on the other hand, the height of the support can be adjusted as required by arranging the pier pad at the bottom of the support, and meanwhile, the support can be conveniently disassembled and transported, and is convenient to use.

Drawings

FIG. 1 is an elevation view of a steel structure bracket for simultaneously meeting the requirements of a large cantilever pier top beam section cast-in-situ and a bridge girder erection machine girder.

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

FIG. 3 is a side view of a steel structure bracket for simultaneously meeting the requirements of a large cantilever pier top beam section cast-in-situ and a bridge girder erection machine.

In the figure: 1 girder, 101 crossbeam, 102 longeron, 2 off-load piece, 3 pillar, 31 stand, 32 batter post, 4 parallel, 5 batter stay, 6 mound pad, 7 cushion cap, 8 anchor bars, 9 steel sheets, 10 reinforcement.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

As shown in fig. 1-3, a steel structure bracket for simultaneously meeting the requirements of the girder erection and girder erection machine on the cast-in-situ of the large cantilever pier top beam section comprises two girders 1 arranged on two sides of the pier top, wherein each girder 1 comprises a girder 101 and a girder 102, the girders 102 are fixed on the tops of the corresponding girders 102, the girders 101 are arranged in a plurality of mode and are vertically fixed on the tops of the corresponding girders 102, the bottoms of the two girders 1 are connected with a plurality of the corresponding girders 3 through a plurality of unloading blocks 2, the corresponding girders 3 are respectively connected with a plurality of parallel connection 4 and diagonal bracing 5, the corresponding girders 3 and parallel connection 4 are respectively of an I-shaped steel structure, the stability is improved, a bearing platform 7 is arranged at the bottom of the corresponding girders 3, a pre-reinforcing device for improving the stability of the bracket and avoiding site hardening is arranged in the bearing platform 7, compared with the prior art, the pre-reinforcing device can save the cost and the construction time, and can more effectively utilize the space under the bridge.

The pre-reinforcing device comprises a plurality of anchor bars 8 buried in a bearing platform 7, steel plates 9 are welded at the tops of the anchor bars 8, the steel plates 9 are welded and fixed with a plurality of struts 3, pre-buried reinforcing work is realized through the steel plates 9 and the anchor bars 8, so that when the pre-reinforcing device is used, the pre-reinforcing device can be used only by welding the bottoms of the struts 3 and the steel plates 9 on site, after the bracket is used, the bracket can be transported through splitting the connection between the bracket and the steel plates 9, thereby facilitating subsequent processing work,

The downside of every pillar 3 all is connected with a mound pad 6, mound pad 6 passes through a plurality of bolts and pillar 3 fixed connection, a plurality of pillars 3 are by the support group of two sets of symmetry settings, every support group includes a stand 31 and a diagonal column 32, the bottom mound pad 6 of a set of stand 31 and diagonal column 32 is connected through the reinforcement 10 that the level set up, can improve the stability of pillar 3 part in the support like this, mound pad 6 can carry out the altitude design as required, can adjust the height of support through mound pad 6 like this, simultaneously because pillar 3 in the support passes through bolted connection with mound pad 6, therefore also made things convenient for the dismantlement work of support.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a satisfy cast-in-situ and steel construction support of bridge crane frame roof beam of big cantilever mound roof beam section simultaneously, includes two girder (1) of setting in mound top both sides, its characterized in that, two the bottom of girder (1) is all connected with a plurality of pillars (3) through a plurality of off-load piece (2), a plurality of pillar (3) are connected with a plurality of parallel connection (4) and bracing (5) respectively, cushion cap (7) are installed to the bottom of pillar (3) and are provided with the pre-reinforcement device that improves support stability and avoid the site hardening in cushion cap (7).

2. The steel structure bracket for simultaneously meeting the requirements of cast-in-situ and bridging of the girder erection machine of the large cantilever pier top beam according to claim 1 is characterized in that: the pre-reinforcing device comprises a plurality of anchor bars (8) buried in a bearing platform (7), steel plates (9) are welded at the tops of the anchor bars (8), and the steel plates (9) are welded and fixed with a plurality of struts (3).

3. The steel structure bracket for simultaneously meeting the requirements of cast-in-situ and bridging of the girder erection machine of the large cantilever pier top beam according to claim 1 is characterized in that: the lower side of each pillar (3) is connected with a pier pad (6), and the pier pad (6) is fixedly connected with the pillar (3) through a plurality of bolts.

4. The steel structure bracket for simultaneously meeting the requirements of cast-in-situ and bridging of the girder erection machine of the large cantilever pier top beam according to claim 1 is characterized in that: the support posts (3) are composed of two symmetrically arranged support groups, each support group comprises a vertical post (31) and an inclined post (32), and one group of the vertical posts (31) and the bottom pier pads (6) of the inclined posts (32) are connected through reinforcing members (10) which are horizontally arranged.

5. The steel structure bracket for simultaneously meeting the requirements of cast-in-situ and bridging of the girder erection machine of the large cantilever pier top beam according to claim 1 is characterized in that: the support column (3) and the parallel connection (4) are both of I-steel structures.

6. The steel structure bracket for simultaneously meeting the requirements of cast-in-situ and bridging of the girder erection machine of the large cantilever pier top beam according to claim 1 is characterized in that: the girder (1) comprises a cross beam (101) and longitudinal beams (102), wherein the longitudinal beams (102) are fixed at the top of the supporting columns (3), and the cross beams (101) are arranged in a plurality and are vertically fixed at the top of the longitudinal beams (102).