Suspension type cast-in-place template curved bridge construction method

Abstract

The invention discloses a suspension type cast-in-place template curved bridge construction method which is a construction method adopting a curved bridge faceplate cast-in-place template to be suspended on a longitudinal BeiLei beam. In the construction method, interrelated members involved comprise two BeiLei beams, cross bars, a shearing support, a cross beam, a longitudinal beam, a fixed steel plate, a suspender, a suspender bolt, an inner trapezoid block, aan outer trapezoid block, a deck form and the like, the characteristics of high bearing capability of the BeiLei beams, easiness in demounting and assembling operations, and repeated use of recycled material are mainly used, the entire structure is safe and reliable, not only can the problem of erecting a support template under a bridge be solved, but also the construction risks and engineering cost are reduced, the construction speed is increased, a better effect on an aspect of protecting ecological environment can be played, and the method is particularly suitable for cast-in-place construction of all straight, oblique, curved and slope cast-in-place deck slabs of half roadbeds and half bridges in mountainous areas or scenic areas.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a construction method for a suspended cast-in-place formwork curved bridge deck. Background technique [0002] At present, because people are more and more aware of the importance of ecological environment protection, a new design concept of ecological highways has been proposed in mountainous or scenic highway reconstruction and expansion projects. In order to reduce the damage of roadbed construction to the ecological environment along the road, half The Fan bridge came into being, that is, half of the roadbed and half of the bridge. Due to terrain constraints, most half-valve bridges have small curve radii, many curves, and steep downhill slopes. It is difficult for prefabricated bridges to adapt to such terrain. On the contrary, cast-in-place slab girders with small spans are more suitable. For example, the traditional full house support is used for cast-in-place slab gird...

AI Technical Summary

Problems solved by technology

For example, the traditional full hall bracket is used for cast-in-place slab girder construction, but because the slope of the bridge is steep, the bridge is high, and there is no flat construction site under the bridge, it is difficult to erect the full hall bracket, and the construction of the bracket foundation will also damage the ecological environment

This type of curved bridge deck generally cannot be constructed by means of hanging baskets or mobile formwork. The completed steel beams of the half-supported arch bridge are used as the supporting structure of the cast-in-place bridge formwork, which is only suitable for the bridge deck construction with formwork support

At the same time, the bridge deck structure of this type of intermediate-supported arch bridge is relatively thin, and the requirements for the bearing capacity of the formwork support are relatively low, which cannot bear the construction load of the overall cast-in-place bridge deck

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