Steel-concrete bridge body and assembling construction process thereof

Abstract

The invention discloses a steel-concrete bridge body and an assembling construction process thereof. The beam body is a composite beam formed by longitudinally connecting a plurality of prefabricatedsegmental box girders; each segmental box girder comprises a concrete top plate, a concrete bottom plate, a vertically-arranged middle web plate and a pair of side web plates. The middle web plates and the side web plates are corrugated steel web plates; temporary matching pieces are fixed to the side edges of the corrugated steel web plates. After the temporary matching pieces corresponding to the adjacent corrugated steel web plates are mutually connected, the side edges of the corresponding corrugated steel web plates are mutually matched and attached; the side web plates incline by a certain angle so as to form an inverted trapezoidal structure with the concrete top plates and the concrete bottom plates, and flange cantilevers horizontally extending out of the inverted trapezoidal structure are arranged on the two transverse sides of the concrete top plates. Accurate positioning between the box girders can be achieved only through connection between the temporary matching pieces, then the assembling effect between the box girders is guaranteed, the positioning efficiency is greatly improved, and meanwhile the positioning reliability can be guaranteed.

Description

technical field [0001] The invention belongs to the field of bridges, and in particular relates to a steel-concrete bridge girder body and an assembly construction process thereof. Background technique [0002] At present, corrugated steel webs are widely used in box bridges. The corrugated steel webs not only greatly reduce the weight of the bridge, but also ensure the structural strength of the bridge. In the prior art, it is necessary to stretch the temporary prestress during the cantilevering process, move the assembled beam section forward to be close to the assembled beam section, check the elevation, center line and matching surface of the assembled beam section, and then paint and bond the joint surface The adhesive is used for gluing. This way of assembling and connecting uses adhesive bonding. On the one hand, it takes a period of time to wait for the adhesive to solidify. Positioning is also easy to cause the box girder after positioning to move due to misoperati...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a steel-concrete bridge girder body, to solve the inconvenience of positioning and adjustment when assembling box girders in the prior art. When positioning, it needs to be glued together with adhesives, which leads to more time-consuming, and the adhesive is solidified. The front and rear are prone to shift, which affects the positioning reliability

Images