Large cantilever wave-purlin combined PC bridge and manufacture method thereof

Abstract

The invention relates to a large cantilever wave-purlin combined PC bridge and a manufacture method thereof. The bridge comprises a concrete top plate and a concrete bottom plate, wherein two wavelike steel webs are arranged between the concrete top plate and the concrete bottom plate, the bottom ends of the two wavelike steel webs are respectively connected to two sides of the concrete bottom plate, the upper ends of the two wavelike steel webs are connected with the concrete top plate, an included angle between each wavelike steel web and the concrete bottom plate is not less than 90 degrees, vertical steel purlin pipes placed between the concrete top plate and the concrete bottom plate are arranged between the two wavelike steel webs, and steel purlin web inclined struts are arranged between the concrete top plate and the concrete bottom plate. The steel purlin web inclined struts are formed into a top plate large cantilever, the pulling stress is reduced, and the resistance to pressure is increased, so that the defects of no resistance to pressure and small torsional rigidity in the wavelike steel webs are remedied; the transverse flexural rigidity of the wavelike steel webs is good, and the longitudinal shearing rigidity is large, so that the defects of small transverse flexural rigidity and small longitudinal shearing rigidity of the steel purlin web inclined struts are remedied; and the large cantilever wave-purlin combined PC bridge has the advantages of light self weight, template bracket saving, convenience for construction, shortened construction period and low cost..

Description

[0001] technical field [0002] The invention relates to the technical field of bridges, in particular to a super-large cantilever streamline wave-truss large cantilever wave-truss composite PC bridge and a manufacturing method thereof. [0003] Background technique [0004] PC bridge is a common design in existing bridges, which has advantages such as high strength. Existing bridges require that the main girder section should be light and streamlined, so as to reduce self-weight, reduce wind resistance, reduce cable stress, make construction easier, and cost more economical. [0005] However, traditional PC bridges are designed with smaller-sized cantilevers. When the bridge deck is wider, there are defects in use due to the poor torsional performance of corrugated steel webs. Existing PC bridges all use corrugated steel webs. Supporting the top plate and the bottom plate, when the size between the corrugated steel webs is large, the corrugated steel webs are subjected to...

AI Technical Summary

Problems solved by technology

[0005] However, traditional PC bridges are designed with smaller-sized cantilevers. When the bridge deck is wider, there are defects in use due to the poor torsional performance of corrugated steel webs. Existing PC bridges all use corrugated steel webs. Support the top plate and the bottom plate. When the size between the corrugated steel webs is large, the corrugated steel webs will be subjected to a large torque, which will easily deform the main girder of the bridge

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