Rigid frame bridge zero section support and construction method thereof

Abstract

The invention discloses a rigid frame bridge zero section support. The rigid frame bridge zero section support comprises multiple assembly brackets arranged at the two sides of a pier body, the bottoms of the assembly brackets are clamped in to a preburied groove in the pier body, sand cylinders are arranged on top plates of the assembly brackets, multiple main longitudinal girders are placed on the sand cylinders on each side, supporting cushion rebars are arranged in the middles of the tops of the main longitudinal girders, supporting cushion rebars at the two sides of the pier body are connected through transverse overload beams, and a bottom die system and other support systems are arranged on the transverse overload beams. The zero section is built by using the method and structure, safety risks are reduced, bridge quality is ensured better, the zero section support is simple in structure, definite in stress and high in controllability, all the materials can be circulated and reused to achieve energy conservation and environment protection, meanwhile, the support is simple in structure, the construction period is shortened, and construction cost is reduced.

Description

technical field [0001] The invention relates to a support structure of a rigid frame bridge and a construction method thereof, in particular to a support of the No. 0 section of a rigid frame bridge and a construction method thereof. Background technique [0002] Rigid frame bridges generally consist of No. 0 section, standard section, cast-in-place section and closing section. In the early stage, the No. 0 section is generally constructed separately, then the standard section and the cast-in-place section are constructed, and finally the closing section is constructed. At present, the construction of No. 0 section basically adopts the following method in the construction process: welding corbels on the constructed pier body, then erecting longitudinal and transverse beams on the corbels, and then erecting formwork on the longitudinal and transverse beams to form a support system , and then pouring of the box girder, and finally remove the bracket. This construction method...

AI Technical Summary

Problems solved by technology

This construction method has the following problems: First, the corbels need to be welded to the embedded parts of the piers, and the corbels need to be cut off when the brackets are removed. The safety in the process is reduced, and the cutting action will reduce the quality of the bridge, the construction period is longer in the whole construction process, and the cost is relatively high

The force of the traditional support structure is not clear enough, which leads to excessive force on some support points and small force on some support points, which brings safety hazards. Moreover, the traditional support structure is relatively complicated, and some materials cannot be reused and can only be treated as waste. ; There are more materials used in the erection of the bracket, and the erection of the bracket takes a long time

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