A cable-stayed bridge structure with partly anchored high and low towers

Abstract

The invention belongs to the technical field of bridge building construction, and in particular relates to a partially ground-anchored high-low tower cable-stayed bridge structure. It includes a high tower, a low tower, an ordinary section main beam located on the shore side, and a mid-span mid-span section main beam; the ordinary section main beam is respectively consolidated with the low tower and the high tower through a plurality of ordinary stay cables, It is characterized in that: the main girder in the mid-span section of the mid-span is connected to the high tower through a plurality of mid-span cable-stayed cables, and a plurality of ground cables corresponding to the mid-span cable-stayed cables are arranged at the relative position on the side of the high tower. Anchor stay cable; the lower end of the ground anchor stay cable is connected to the ground anchor fixed on the foundation of the bridge bank; the ground anchor is located at the near-shore end of the main beam of the common section close to the high tower. The invention has a simple structure, and the ground anchor can enhance the lifting of the mid-span stay cable to the main girder of the mid-span mid-span section, and can also reduce the cost of bridge construction to a certain extent, reduce the cost budget of bridge construction, and the construction difficulty is also great The range is reduced, which has great promotion value.

Description

technical field [0001] The invention belongs to the technical field of bridge building construction, and in particular relates to a partially ground-anchored high-low tower cable-stayed bridge structure. Background technique [0002] Twin-tower and multi-tower cable-stayed bridges, the heights of the towers are sometimes made inconsistent with each other, so they are called high-low tower cable-stayed bridges (also known as son-mother towers, sister towers), which is another development of the tower-shaped layout of cable-stayed bridges. Representative cable-stayed bridges with high and low towers at home and abroad include: [0003] 1. Mezcala Bridge, Mexico [0004] Built in 1993, the Mezcala Bridge is the most important of the four cable-stayed bridges on the road leading to the mountain in Mexico City. The tower is a concrete hollow box-shaped section with a height of 241.8m; the width of the main girder four-lane bridge is 19.1m, and a composite beam composed of I-bea...

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to provide a partially ground-anchored cable-stayed bridge structure with high and low towers in view of the problems in the prior art that the cable-stayed cables of high towers have poor restraint on the mid-span girder body and increase the cost and difficulty of bridge construction.

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