Self-anchored suspension bridge with main cable ground anchors

Abstract

The invention provides a self-anchored suspension bridge with main cable ground anchors, which comprises a main cable, cable bent towers, stiffening beams, slings and side piers, wherein the cable bent towers are positioned on two sides or in the middle of the bridge surface; a main cable saddle supporting main cable is arranged at the top of the cable bent tower; cable rotating saddles are arranged at the two ends of the stiffening beams; the main cable bypasses the rotating cable saddle at the end part of the stiffening beam and then is vertically and downwards anchored on the foundation ofthe side pier; the anchoring section, below the cable rotating saddle, of the main cable comprises a whole cable section and a scattered cable section, a scattered cable sleeve is arranged between thewhole cable section and the scattered cable section and provided with a fixed support in the bridge direction, the slings are evenly arranged between the main cable and the stiffening beam, the sidepiers are located below the ends of the stiffening beam, and supports are arranged at the tops of the side piers to support the stiffening beam. According to the self-anchored suspension bridge withthe main cable ground anchors, the main cable bypasses the cable rotatingsaddle at the end part of the stiffening beam and then is vertically and downwards anchored on the foundation of the side pier, so that the structure of an anchoring area of the main cable at the beam end can be greatly simplified, and the anchoring and maintenance of the main cable are facilitated.

Description

technical field [0001] The invention relates to the technical field of bridge construction engineering, in particular to a self-anchored suspension bridge with ground anchors for main cables. Background technique [0002] Suspension bridge refers to the bridge in which the main cable suspended by the cable tower is used as the main load-bearing member of the superstructure. According to the different anchoring positions of the main cables, it can be divided into ground-anchored suspension bridges and self-anchored suspension bridges. The end of the main cable of the ground-anchored suspension bridge is anchored on the anchorage on both sides of the bridge, and the anchorage is used to bear the tension of the main cable. Although the spanning capacity is large, the scale of the anchorage is large and the cost is expensive. The main cable of the self-anchored suspension bridge is anchored at both ends of the main girder, without the need to install bulky anchors, and the inte...

AI Technical Summary

Problems solved by technology

This anchoring system can effectively reduce the size of the anchoring structure and improve the seismic performance, but it is difficult to erect the main cable and the force of the anchor is complicated

[0007] In addition, at present, the main cables of self-anchored suspension bridges generally adopt rear-anchor structures. Anti-corrosion treatment, and inconvenient maintenance, affecting the service life of the bridge

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