Central buckle structure of self-anchored suspension bridge

Abstract

The invention provides a central buckle structure of a self-anchored suspension bridge, being characterized in that a plurality of pairs of rigid central buckles are arranged in the middle span, and each of which comprises a central buckle cable clip and a central buckle bar shaft; the central buckle cable clip is installed on the main cable; the central buckle bar shaft is welded or bolted by twoI-shaped steel bars; the two I-shaped steel bars are herringbone distributed; the upper end of the central buckle bar is connected with the central buckle cable clip; and the lower end of the centralbuckle bar shaft is connected with the main beam. By adjusting the slope and section size of each central buckle, the stiffness coordination of many pairs of rigid central buckles can be realized, and the combined central buckles with different slope and section can be formed, so that many pairs of central buckles can work together and share the unbalanced force between the main cable and the main beam equally. A self-anchored suspension bridge central buckle structure can effectively solve the bending unfavorable problem of the bottom of the main tower of a long-span self-anchored suspensionbridge and the slip problem of the main cable at the tower top.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a central buckle structure of a self-anchored suspension bridge. Background technique [0002] Suspension bridge is a kind of flexible structure. For long-span suspension bridges with multiple towers and multiple spans, the structural system is more flexible. In the state of no load, the structural deformation is large, and the main cable will generate a large unbalanced force at the top of the tower, and then generate a large bending moment at the bottom of the tower. In order to resist the bending moment at the bottom of the tower, the section of the main tower is usually adjusted to increase the bending bearing capacity of the main tower, but this method will aggravate the slipping tendency of the main cable at the top of the tower. In view of the above problems, the common solution is mainly to realize the coordination of the structural system by adjusting the sec...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a self-anchored suspension bridge central buckle structure, which can effectively solve the problems of the main tower of the long-span suspension bridge being bent and the main cable slipping on the top of the tower. By adjusting the slope and cross-sectional size of the central buckle, multiple pairs of The rigidity of the rigid central buckle is coordinated to form a combined central buckle, so that multiple pairs of central buckles can work together to share the unbalanced force between the main cable and the main beam on average

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