Space four-cable-surface double-amplitude curve-shaped cable-stayed bridge of canyon river terrain and construction method

Abstract

The invention provides a space four-cable-surface double-amplitude curve-shaped cable-stayed bridge of canyon river terrain and a construction method. An arch bridge tower is built on hills on the twosides of a river valley, a four-cable-surface spatial inclined cable net tightly drags an elliptical annular double-amplitude curve-shaped main beam, inner cable nets are anchored at a top section ofa parabolic section of a duck egg arch bridge tower, outer side cable nets are anchored at a top section of an elliptical arc section tower column of the duck egg arch bridge tower, wherein the innerside cable nets are arranged in a cross anchoring mode, the center of the elliptical annular double-amplitude curve-shaped main beam is provided with the elliptical annular beam supporting member, the elliptical annular beam also serves as a sightseeing platform, a single main cable suspension cable is used for hoisting a temporary truss girder connecting beam structure, the cable hoisting methodassist the double bending cable-stayed bridge cantilever assembling construction, and after the bridge is formed, radial slings are arranged on the single main cable suspension cable, so that the elliptical annular beams are hung. The double-bending cable-stayed bridge has the advantages of being simple in structure, rich in facade, attractive in appearance, ecological, environment-friendly, smooth in traffic organization, convenient to construct, good in economical efficiency and the like, and has good application prospect.

Description

technical field [0001] The invention relates to a cable-stayed bridge and its construction, in particular to a cable-stayed bridge with four cable planes in space and a double-width curve in canyon river topography and a construction method. Background technique [0002] With the progress of the times, many changes have taken place in the main structure of the cable-stayed bridge, such as the main tower, the main girder and the cables. Among them, in order to adapt to the line shape of the route, a cable-stayed bridge with a curved main girder, that is, a curved cable-stayed bridge, has appeared. . Under the terrain conditions of canyons and rivers, high-grade highways are usually designed to run parallel to rivers. If the curved bridge structure is used for bridges across the river, it will create very favorable conditions for road alignment and bring extremely reasonable and economical results. When the span of the curved girder bridge across the river is large, the gener...

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Problems solved by technology

[0003] Purpose of the invention: The purpose of the present invention is to provide a space four-cable surface double-width curved cable-stayed bridge with canyon and river topography, to solve the problems of unbalanced acceptance of the foundation of the cable-stayed bridge, easy sliding deformation of the bridge support, and weak use function

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