Arrangement method and composition structure for rigid frame bridge zero section non-welded support

Abstract

The invention discloses an arrangement method for a rigid frame bridge zero section non-welded support. The construction method includes the following steps that 1, a pier body is poured, and support arranging spaces are reserved in the two sides of the top of the pier body; 2, fulcrums are leveled in the reserved support arranging spaces, sand cylinders are placed, and elevation is adjusted; 3, first layer main longitudinal girders are placed on the sand cylinders; 4, transverse distribution beams are arranged on the first layer main longitudinal girders; 5, second layer main longitudinal girders are placed on the transverse distribution beams; 6, transverse overload beams are arranged between the second layer main longitudinal girders; 7, a bottom die system and other support systems are arranged on the transverse overload beams; 8, a box girder zero section is poured; 9, all the support system are disassembled; 10, reserved support arranging spaces of the pier body are filled with reinforced concrete in a supplemented mode. The zero section is built by using the method and the structure, safety risks are reduced, bridge quality is ensured better, the construction period is shortened, and construction cost is reduced.

Description

technical field [0001] The invention relates to a setting method and a composition structure of a bridge support, in particular to a setting method and a composition structure of a non-welded support of the No. 0 section of a rigid frame bridge. 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: weld the corbels on the constructed pier columns, then set up longitudinal and horizontal distribution beams on the corbels, and then set up formwork on the longitudinal and horizontal distribution beams, etc. Construct the bracket system, then pour the box girder, and finally remove t...

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, resulting in excessive force on some support points and small force on some, which brings safety hazards. Moreover, the traditional support structure is more 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, which makes the erection of the bracket longer

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