橡胶隔震支座温度相关性的研究进展  

Research progress on temperature dependence of rubber isolation bearings

作　　者：李爱群[1,2] 张瑞君[1] 徐刚 LI Aiqun;ZHANG Ruijun;XU Gang(School of Civil Engineering,Southeast University,Nanjing 210009,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]东南大学土木工程学院,江苏南京210009 [2]北京建筑大学北京未来城市设计高精尖创新中心,北京100044

出　　处：《建筑结构学报》2021年第7期1-11,共11页Journal of Building Structures

基　　金：国家重点研发计划(2017YFC0703600);国家自然科学基金项目(51438002,51708257)。

摘　　要：随着隔震技术的发展,橡胶支座隔震体系的应用环境日趋复杂,温度对隔震体系性能的影响逐渐成为工程界和学术界关注的重点。通过对比多种常用的可以考虑复杂因素的支座力学模型,发现其均不能模拟温度因素的影响。整理了橡胶及橡胶隔震支座温度相关性的研究,总结指出温度对橡胶隔震支座性能的影响主要包括低温瞬时硬化、低温结晶硬化及滞回生热等。梳理了现有考虑温度相关性的支座理论模型,发现国外学者侧重于计算铅芯自热的影响,国内学者则采用温度影响系数来修正支座的力学参数,但其均需要支座试验校正,具有较大的局限性。国内隔震设计规范中尚无关于温度效应的规定,且文献调研发现隔震结构分析中考虑温度相关性的研究甚少,需深入研究以建立关于支座温度效应的完整理论体系和规范指南。With the development of seismic isolation technology, the application environment of the rubber bearing isolation system is becoming increasingly complicated, and the influence of temperature on the performance of the seismic isolation system has gradually become a focus of the engineering and academic communities. A variety of commonly used bearing mechanics models that can consider complex factors are listed, and it is found that none of them can simulate the influence of temperature properly. The research on the temperature dependence of rubber and rubber isolation bearings is summarized, and it is concluded that the influence of temperature on the performance of rubber isolation bearings mainly includes low-temperature instantaneous hardening, low-temperature crystallization hardening and hysteretic heat generation. The existing theoretical models of bearings that consider the temperature dependence are summarized. It is found that foreign researchers focus on calculating the influence of self-heating of the lead core, while domestic scholars use temperature effective coefficients to modify the mechanical parameters of the bearing. However, they both require bearing tests for calibration and thus have great limitations. There is no provision on the temperature effect in the seismic isolation design code, and there are few studies considering the temperature dependence in the analysis of seismic isolation structures. In-depth research is needed to establish a complete theoretical system and code guidelines on the temperature effect for rubber isolation bearings.

关 键 词：隔震体系 橡胶隔震支座 力学性能 温度相关性 滞回生热 

分 类 号：TU352.12[建筑科学—结构工程]