Method for casting concrete 0# block support by continuous beam cantilever

Abstract

The invention relates to a method for casting concrete 0# block support by a continuous beam cantilever, comprising the following steps: (1) a triangular bracket is manufactured, and each triangular bracket is composed of a horizontal rod, an inclined strut, a channel steel shore, a channel steel inclined strut, a reinforced steel plate and a reinforced steel plate I; 2) the support is pre-casted:each group of support is composed of a pre-cast steel plate, a smooth plate, three vertical steel plates, an embedded bar and a reinforced bar fabric; 3) finishing screw threaded steel bars are pre-casted: every four finishing screw threaded steel bars are one group, a PVC pipe is sheathed outside each finishing screw threaded steel bar, and two ends of each finishing screw threaded steel bar areprovided with a steel box and a reinforced steel plate II and are fixed by blind nuts, four groups of the finishing screw threaded steel bars are arrayed horizontally and are pre-casted in pier cap concrete; 4) the triangular bracket is mounted: the horizontal rod of the triangular bracket is respectively welded on the steel box and the reinforced steel plate II, the inclined strut thereof is welded on the smooth plate in the support; the method has the advantages that: the method does not occupy the space under the bridge, the used material is less compared with a steel pie bracket, the structure is simple, and assembly and disassembly are convenient.

Description

Technical field: [0001] The invention is a method for cantilever pouring reinforced concrete continuous beam 0# block support in bridge engineering spanning highways, railways or rivers. Background technique; [0002] With the advancement of technology and the application of new materials, long-span concrete continuous beams are widely used in bridge projects spanning highways, railways, and rivers. During the continuous beam cantilever pouring construction process, the 0# block is used as the beam structure on the top of the pier, and it is the reaction point of the hanging basket and the working platform for installing the hanging basket. The concrete of block 0# must be poured on the erected support platform. According to the previous construction method, the construction platform adopts steel pipe supports, and the supports are erected on the caps or temporary poured concrete foundations. This method uses more support materials and is only suitable for bridges with low ...

AI Technical Summary

Problems solved by technology

According to the previous construction method, the construction platform adopts steel pipe supports, and the supports are erected on the caps or temporary poured concrete foundations. This method uses more support materials and is only suitable for bridges with low heights. For bridges with high piers The steel pipe support is very uneconomical, and it is difficult to set up, and the rigidity of the support is difficult to guarantee

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