中国公路学报070212

	中国公路学报 CHINA JOURNAL OF HIGHWAY AND TRANSPORT 2007 Vol.20 No.2 P.63-67

超大跨度斜拉桥的横向约束体系

叶爱君　范立础　

摘　要：为了确定超大跨度斜拉桥的合理横向抗震约束体系,以苏通长江公路大桥为研究对象,采用非线性时程分析方法,分析了3种边墩、梁横向约束体系即横向滑动体系、全限位体系和减隔震体系(流体黏滞阻尼器连接体系)对超大跨度斜拉桥地震反应的影响,重点研究了阻尼器的合理设置方式及阻尼器参数.结果表明:对于超大跨度斜拉桥,横向滑动体系和全限位体系均不是理想的抗震体系;而在边墩、梁之间设置横向流体黏滞阻尼器可以显著减小边墩的横向内力以及梁端的横向位移,流体黏滞阻尼器应分散设置在各边墩上.
关键词：桥梁工程;超大跨度斜拉桥;非线性时程分析方法;横向约束体系;隔震;流体黏滞阻尼器
分类号：U448.27　文献标识码：A
文章编号：1001-7372(2007)02-0063-05

Lateral Constraint Systems for Super-long-span Cable-stayed Bridge

YE Ai-jun　 FAN Li-chu　

基金项目：国家自然科学基金项目(50278068);上海市青年科技启明星计划项目(03QF14052)
作者简介：叶爱君(1970-),女,浙江松阳人,副教授,工学博士,E-mail:yeaijun@mail.tongji.edu.cn.
作者单位：叶爱君（同济大学,土木工程防灾国家重点实验室,上海,200092）　
　　　　　范立础（同济大学,土木工程防灾国家重点实验室,上海,200092）　

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收稿日期：2006年7月17日

出版日期：2007年3月31日

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