Integral abutment based on corrugated steel plates and construction method thereof

Abstract

The invention discloses an integral abutment based on corrugated steel plates and a construction method of the integral abutment, the integral abutment comprises a box girder and a plurality of abutment foundations for supporting the box girder, the box girder comprises a concrete top plate, a concrete bottom plate and corrugated steel webs, and the corrugated steel webs are respectively connectedwith the concrete top plate and the concrete bottom plate; the corrugated steel webs are connected with the abutment foundation through the corrugated steel plate sets, and / or the bottom ends of thecorrugated steel webs directly extend downwards and are inserted into the bridge piers. Each corrugated steel plate set comprises a plurality of parallel corrugated steel plates. The construction method comprises the steps of manufacturing the corrugated steel webs in a factory, constructing pile foundations and abutment foundations, constructing corrugated steel plates, constructing box girder sections at the upper part of the abutment, constructing end cross beams, constructing corrugated steel web combined box girder sections, constructing box girder closure sections and the like. The integral abutment provided by the invention not only has large vertical bearing capacity, but also has proper horizontal displacement.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to an integral abutment based on corrugated steel plates and a construction method thereof. Background technique [0002] The problems of bridge expansion devices and maintenance problems have always existed. When multi-span bridges adopt continuous structures, the amount of expansion and contraction at the abutment becomes larger, and the requirements for expansion devices are higher, and the defects are more prominent. The significance of adopting seamless bridges also follows. increase. [0003] In the existing integral abutment design, in order to reduce the longitudinal expansion and expansion deformation of the superstructure in the structure due to the constraints of the abutment and its foundation, a large additional stress is generated in the structure, and the large horizontal deformation of the flexible pile foundation is generally used to reduce the stre...

AI Technical Summary

Problems solved by technology

[0003] In the existing integral abutment design, in order to reduce the longitudinal expansion and expansion deformation of the superstructure in the structure due to the constraints of the abutment and its foundation, a large additional stress is generated in the structure, and the large horizontal deformation of the flexible pile foundation is generally used to reduce the stress. Small additional stress, but the flexible pile foundation has to bear the horizontal force and vertical force transmitted by the superstructure, the force situation is more complicated and unfavorable to the structure

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