CN212561194U

CN212561194U - Bridge flange plate construction formwork support system

Info

Publication number: CN212561194U
Application number: CN202020859390.9U
Authority: CN
Inventors: 常春章; 华敬华; 陶云雷; 杨保全; 张海霞; 曾来仕
Original assignee: China Railway No 10 Engineering Group Co Ltd
Current assignee: China Railway No 10 Engineering Group Co Ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-02-19
Anticipated expiration: 2030-05-21

Abstract

The utility model discloses a bridge flange plate construction formwork support system. It includes a plurality of bearing structure along the vertical interval setting of bridge, characterized by: every bearing structure includes stand, bracket and lacing wire, the stand is vertical to be fixed at the bridge outer fringe and its lower extreme wears out the bridge outer fringe downwards, the bracket is H shaped steel, the one end of bracket with the stand wears out bridge outer fringe end fixed connection downwards, the other end of bracket is encorbelmented to the bridge outside, wherein one end of lacing wire with the end-to-end connection of the end of encorbelmenting of bracket, the other end of lacing wire with the upper end fixed connection of stand, bracket, lacing wire form the tripod. The utility model discloses can realize that the quick ann of support system and template tears open, solve the problem that triangular bracket destroyed to the girder steel web, improve concrete form efficiency of construction, guarantee construction safety and construction quality.

Description

Bridge flange plate construction formwork support system

Technical Field

The utility model relates to a bridge flange plate construction formwork support system for steel box girder flange plate cast in situ concrete construction belongs to concrete form construction technical field.

Background

The steel-concrete composite beam has good stress performance and better comprehensive economic benefit, has wide application prospect, light weight, large structural strength, easy span adjustment, quick and convenient construction, economy and applicability, so the cast-in-place concrete of the steel box beam flange plate is a common design point of the common steel-concrete composite beam. The flange plate formwork engineering is one of the key processes of concrete construction, and at present, a support or bracket support system is mostly adopted. When the support system is adopted, the cost of materials of full-scale supports and steel pipe columns is high, the construction period is long, and the safety risk of erection and dismantling is high; when the bracket supporting system is adopted, the triangular bracket needs to weld the connecting piece on the web plate on the side surface of the steel box girder in advance, the steel box girder is damaged if the connecting piece is removed after construction is finished, the appearance is influenced if the connecting piece is not removed, the whole triangular bracket is installed and removed in a high-altitude mode, and the triangular bracket is complex and has high safety risk. And steel box girder web is difficult for punching, and the web punches and can arouse hole site stress concentration, can lead to the fracture, if the beading on the web, add and weld the bracket and can make the web secondary be heated, influence the outward appearance moreover, still need polish once more to and whole spraying paint etc..

Disclosure of Invention

To the above-mentioned defect that exists among the prior art, the utility model provides a bridge flange board construction formwork support system can realize that the quick ann of support system and template tears open, improves concrete form construction efficiency, and construction safety can avoid the problem to the destruction of girder steel web.

The utility model discloses a realize through following technical scheme: the utility model provides a bridge flange plate construction formwork support system, includes a plurality of bearing structure, characterized by that along the vertical interval setting of bridge: every bearing structure includes stand, bracket and lacing wire, the stand is vertical to be fixed at the bridge outer fringe and its lower extreme wears out the bridge outer fringe downwards, the bracket is H shaped steel, the one end of bracket with the stand wears out bridge outer fringe end fixed connection downwards, the other end of bracket is encorbelmented to the bridge outside, wherein one end of lacing wire with the end-to-end connection of the end of encorbelmenting of bracket, the other end of lacing wire with the upper end fixed connection of stand, bracket, lacing wire form the tripod.

The utility model discloses in, stand, bracket and lacing wire can form firm tripod structure, can bear great load, and the tripod that stand, bracket, lacing wire formed can be in the same place with the firm connection of bridge, can effectively guarantee construction safety. The utility model discloses need not to punch in bridge web position during the installation, can not destroy bridge web structure, do not influence bridge construction quality. After the support system is installed, a bottom die and a side die can be installed on the support system, steel bars are bound, and concrete is poured.

Further, in order to facilitate disassembly, the lower end of the upright post is provided with an external thread, and the bracket is detachably connected with the lower end of the upright post through a nut.

Furthermore, in order to improve the structural strength of the support system, the lacing wire is made of round steel.

Furthermore, in order to improve the structural strength of the support system, the upright column is phi 25 finish-rolled deformed steel bar, and the lacing wire is phi 12 round steel.

The utility model has the advantages that: the utility model has convenient installation and disassembly, high construction efficiency, short cycle of the template system, accelerated construction progress and shortened construction period; the template supporting system of the utility model is relatively fixed, precise in design, reasonable in structure, simple in operation, and ensures the construction safety; utilize the utility model discloses the construction need not to punch on the steel box girder web, does not destroy the steel box girder web, has solved and has adopted the triangular bracket to the problem of girder steel web destruction among the prior art, and does not influence the bridge outward appearance, and construction quality is stable.

Drawings

FIG. 1 is a schematic structural diagram of the present invention in an embodiment;

in the figure, 1, upright posts, 2, brackets, 3, tie bars, 4, flange plates, 5 and steel box girders.

Detailed Description

The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:

as shown in the attached drawings, the bridge flange plate construction formwork support system comprises a plurality of support structures which are arranged along the longitudinal direction of a bridge at intervals, and each support structure comprises an upright post 1, a bracket 2 and a tie bar 3. The upright posts 1 are vertically fixed on the outer edge of the steel box girder 5, and the lower ends of the upright posts penetrate through the outer edge of the steel box girder 5 downwards and are positioned on the lower part of the outer edge of the steel box girder 5. Bracket 2 is H shaped steel, bracket 2's one end with stand 1 is worn out 5 outer fringe end fixed connection of steel box girder downwards, bracket 2's the other end is encorbelmented to the steel box girder outside. One end of the lacing wire 3 is fixedly connected with the tail end of the cantilever end of the bracket 2, and the other end of the lacing wire 3 is fixedly connected with the upper end of the upright post 1. The tie bar 3 is connected with the tail end of the overhanging end of the bracket 2 and the upper end of the upright post 1 by welding. The upright post 1, the bracket 2 and the lacing wire 3 are connected to form a tripod structure.

In order to improve the structural strength of the support system, the preferred lacing wire adopts phi 12 round steel, and the upright post is phi 25 finish-rolled deformed steel.

In order to facilitate installation and disassembly, the lower end of the upright post 1 is provided with external threads, the bracket 2 is provided with bolt holes, and the bracket 2 is detachably connected with the lower end of the upright post 1 through nuts.

The utility model discloses during the installation, the steel box girder back of taking one's place vertically installs foretell bearing structure along the bridge according to the design requirement. The longitudinal spacing of the brackets was 1 m. After the supporting system is installed, a bottom die and a side die can be installed on the supporting system, reinforcing steel bars are bound, concrete is poured, and the construction of the bridge flange plate 4 is completed. After the construction is finished, the utility model can be dismantled.

The utility model discloses can realize that the quick ann of support system and template tears open, solve among the prior art and adopted the triangular bracket to the problem that the girder steel web destroyed when supporting, improve concrete form efficiency of construction, guarantee construction safety and construction quality. The utility model discloses especially, be suitable for the concrete flange plate construction of steel-concrete combination roof beam.

Other parts in this embodiment are the prior art, and are not described herein again.

Claims

1. The utility model provides a bridge flange plate construction formwork support system, includes a plurality of bearing structure, characterized by that along the vertical interval setting of bridge: every bearing structure includes stand (1), bracket (2) and lacing wire (3), stand (1) is vertical to be fixed at the bridge outer fringe and its lower extreme wears out the bridge outer fringe downwards, bracket (2) are H shaped steel, the one end of bracket (2) with stand (1) wears out bridge outer fringe end fixed connection downwards, the other end of bracket (2) is encorbelmented to the bridge outside, wherein one end of lacing wire (3) with the end-to-end connection of the end of encorbelmenting of bracket (2), the other end of lacing wire (3) with the upper end fixed connection of stand (1), bracket (2), lacing wire (3) form the tripod.

2. The bridge flange plate construction formwork support system of claim 1, wherein: the lower end of the upright post (1) is provided with an external thread, and the bracket (2) is detachably connected with the lower end of the upright post (1) through a nut.

3. The bridge flange plate construction formwork support system of claim 1, wherein: the lacing wire (3) is round steel.

4. The bridge flange plate construction formwork support system of claim 1, 2 or 3, wherein: the upright post (1) is phi 25 finish-rolled deformed steel bar, and the lacing wire (3) is phi 12 round steel bar.