基于SMA复合橡胶支座的桥梁隔震  

Bridge Isolation Based on SMA-Composite Rubber Bearing

作　　者：陈海全[1] 李忠献[1] 刘东民 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]山东省潍坊市建设局,潍坊261031

出　　处：《天津大学学报》2006年第B06期198-202,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金(50178047).

摘　　要：针对结构减震、隔震问题,提出了一种基于SMA复合橡胶支座的智能隔震系统,应用SMA复合橡胶支座对一受代表3种场地频率地震波激励的多跨简支桥的标准跨桥梁进行了时程分析,并与应用普通橡胶支座的桥梁进行了减震、隔震效果的比较．结果表明,应用SMA复合橡胶支座隔震,不仅能取得更为显著的减震、隔震效果,而且能使地震后隔震桥梁的梁体得以复位,从而验证了SMA复合橡胶支座在桥梁隔震中的有效性、智能性和自恢复能力．A smart seismic isolation system is proposed by compounding a laminated rubber bearing with SMA- composite rubber bearing. By using the proposed SMA-composite rubber bearings, the time-history analysis of a standard-span girder of a multi-span simple bridge excited by three kinds of earthquake wave that respectively denote three sorts of ground frequency is simulated, and the isolation effects arc compared with those of the ordinary rubber bearings. The results show that not only the isolation effects of the SMA-composite rubber bearings are significant, but the isolated girder can be reset after the earthquake. This demonstrates the effectiveness, intelligence and resetting capacity of the proposed SMA-composite rubber bearing in the bridge isolation.

关 键 词：形状记忆合金 SMA复合橡胶支座 桥梁隔震 

分 类 号：TU352.1[建筑科学—结构工程]