Horizontal elastic limiting and longitudinal hydraulic fusing damping combined support system

An elastic limit and hydraulic technology, applied in the direction of bridge parts, bridges, buildings, etc., can solve the problems of bearing damage to the bridge deck and track displacement, difficult maintenance and high cost, and achieve the effect of improving earthquake strength.
CN103590328AActive Publication Date: 2014-02-19CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
Publication Date
2014-02-19

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Abstract

The invention discloses a horizontal elastic limiting and longitudinal hydraulic fusing damping combined support system. A hydraulic fusing damping support is utilized to achieve longitudinal restraining, a limiting height-adjusting rubber support is utilized to achieve horizontal restraining, the hydraulic fusing damping support is arranged on the same midspan side between the top of a first main pier and the bottom of a girder, the limiting height-adjusting rubber support is arranged between the inner side of an arch springing and the outer side of the girder, and a second main pier opposite to the first main pier is provided with a bidirectional movable spherical steel support. The longitudinal restraining is in a locked state in normal situation to guarantee that the longitudinal restraining can be achieved under the action of brake force and the action of track force in an application period. When earthquake happens, the longitudinal restraining is unlocked to have a damping function. The longitudinal restraining is also in the locked state after the earthquake. The horizontal restraining can guarantee horizontal limiting in the application period, prevent the support from being hung in the air and reduce horizontal earthquake force. In earthquake or rare-occurrence earthquake, pier bodies and a foundation can work in an elastic range, so that the resistance of a bridge to the earthquake intensity is improved, traffic smoothness at key traffic nodes is maintained, and significance in earthquake relief work is achieved.
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Description

technical field

[0001] The invention relates to a bridge support system, in particular to a main girder support system applied to highway and railway arch bridges, cable-stayed bridges and suspension bridges. Background technique

[0002] The bridge support system is used to restrain the bridge longitudinally and laterally. Usually, the longitudinal restraint system and the transverse restraint system are used together to ensure the normal use of the bridge.

[0003] Common longitudinal restraint systems and their disadvantages are as follows:

[0004] 1. The main pier is equipped with two longitudinal fixed supports: most of the vertical force of the beam is transmitted to the arch rib through the suspender, and the type of the support on the top of the pier is small. This kind of support cannot withstand the seismic horizontal force of the entire beam body. Under strong earthquakes, the support is often sheared, resulting in damage to the bridge structure or even falling ...

Claims

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