自调坡均压支座垫板系统结构性能分析

Structural Performance Analysis of Self-adjusting Slope Uniform Pressure Support Cushion System

自调坡均压支座垫板系统是在运营桥梁支座出现老化开裂、脱空、偏位等病害时,传统支座结构不能解决下而开发的全新支座结构系统。从自调坡、双曲面球型铰、曲面半径、垫板承载能力、曲面粗糙度和抗震性等方面详细分析了该系统的性能。结果表明,该系统调坡范围0~±8%,具有简化桥梁设计、降低桥梁养护成本、抗震等特点,能从根本上解决支座脱空、偏位等病害,显著提升桥梁支座的使用寿命。

The self-adjusting slope uniform pressure support cushion system is a new support structure system developed under the condition that the traditional support structure could not solve the aging cracking,emptying and deviation of the bridge support.In this paper,the performance of the system is analyzed in detail from the aspects of self-adjusting slope,hyperboloid spherical hinge,radius of surface,bearing capacity of pad,surface roughness and seismic resistance.The results show that the system can adjust the slope range from 0 to ±8%,has the characteristics of simplifying bridge design,reducing bridge maintenance cost,earthquake resistance,etc.,and can fundamentally solve the problems such as dislocation and deviation of the bearings,and significantly improve the service life of bridge bearing.