Construction method for rigid frame bridge No.0 section non-welding support and structure

Abstract

The invention discloses a construction method for a rigid frame bridge No.0 section non-welding support and a structure. The construction method includes the following steps that A, a pier stud is poured, and support arrangement spaces are reserved in the two sides of the top of the pier stud; B, fulcrums are leveled at the reserved space arrangement spaces, sand cylinders are placed, and the elevation is adjusted; C, three main longitudinal girders are placed on the sand cylinders, and upper flanges of two adjacent main longitudinal girders are welded; D, a supporting cushion rebar is arranged at the top of the middle position of each of the three main longitudinal girders; E, transverse overload girders are arranged on the supporting cushion rebars; F, bottom die systems and other support systems are arranged on the transverse overload girders; G, a box girder No.0 section is poured; H, all the support systems are detached; J, reinforced concrete at the support arrangement spaces reserved in the pier stud is supplemented. By means of the method and structure, the No.0 section is constructed, safety risks are reduced, the quality of a bridge is better guaranteed, the construction period is shortened, and the construction cost is reduced.

Description

technical field [0001] The invention relates to a construction method and structure of a bridge support, in particular to a construction method and 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 the bracket. This ...

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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