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Multi-pylon cable-stayed bridge supporting system with function of inhibiting longitudinal seismic response and working method

A seismic response and longitudinal technology, applied in the direction of cable-stayed bridges, bridges, bridge forms, etc., to achieve the effect of simple and easy determination of performance parameters, suppression of longitudinal relative displacement response, and convenient engineering application

Inactive Publication Date: 2013-12-04
SOUTHEAST UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, according to the seismic response characteristics of the longitudinal partial restraint system of multi-tower cable-stayed bridges, how to establish the viscous damper arrangement scheme and the damper parameter selection method of the longitudinal partial restraint system of multi-tower cable-stayed bridges has not been reported in the literature

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  • Multi-pylon cable-stayed bridge supporting system with function of inhibiting longitudinal seismic response and working method
  • Multi-pylon cable-stayed bridge supporting system with function of inhibiting longitudinal seismic response and working method
  • Multi-pylon cable-stayed bridge supporting system with function of inhibiting longitudinal seismic response and working method

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Embodiment Construction

[0031]The present invention will be further described below in conjunction with the accompanying drawings and examples, but these examples should not be construed as limiting the present invention.

[0032] A multi-tower cable-stayed bridge support system capable of suppressing longitudinal earthquake response of the present invention comprises a main girder, a bridge pier and a bridge tower. Both ends of the main girder are connected to the piers, and the bridge towers are connected to the main girder by stay cables. The number of said bridge towers is n, and m bridge towers are longitudinally restrained with the main girder respectively, and the remaining n-m bridge towers have no longitudinal restraint relationship with the main girder. A first fluid damper is provided at the connection between the bridge tower and the main beam that is not longitudinally constrained by the main beam, and a second fluid damper is provided at the connection between each pier and the main bea...

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Abstract

The invention discloses a multi-pylon cable-stayed bridge supporting system with a function of inhibiting longitudinal seismic response. The supporting system comprises a girder, bridge piers and pylons; both ends of the girder are connected to the bridge piers; the pylons are connected with the girder by stay cables; n pylons are provided; m pylons are respectively and longitudinally bound with the girder; the rest of n-m pylons has no longitudinal binding relation with the girder; the joint of each pylon without binding relation with the girder and the girder is provided with a first fluid damper; the joint of each bridge pier and the girder is provided with a second fluid damper; both the first fluid dampers and the second fluid dampers are longitudinally arranged; both n and m are integers; n is greater than or equal to 3; and n is greater than m and m is greater than 1. The supporting system has an excellent damping effect on longitudinal seismic response of the girder and the pylons of a multi-pylon cable-stayed bridge longitudinal part binding system, which is caused by the seismic action. Meanwhile, the invention also provides a working method of the supporting system. The working method is simple and has an excellent damping effect.

Description

technical field [0001] The invention belongs to the field of bridge structure engineering, and in particular relates to a multi-tower cable-stayed bridge support system capable of suppressing longitudinal seismic response and a working method. Background technique [0002] The multi-tower cable-stayed bridge is a structural type of long-span bridge with more than two pylons. Compared with ordinary two-tower cable-stayed bridges, multi-tower cable-stayed bridges have longer main girders, and the influence of temperature effects on cables, towers, and beams is significantly increased. A reasonable structural system is adopted to slow down the temperature effect and become a multi-tower bridge. One of the key issues in the structural design of cable-stayed bridges. The longitudinal partial restraint system, in which part of the bridge tower is longitudinally consolidated with the main girder, can better adapt to the larger temperature deformation of the main girder. The longi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D11/04E01D21/00
Inventor 丁幼亮耿方方葛文浩宋永生
Owner SOUTHEAST UNIV
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