单层连续梁桥多点地震输入拟动力实验研究  

Research on Pseudo-dynamic Test Control of Single Continuous Bridge under Multi-support Seismic Excitation

作　　者：陈寅[1] 邱法维[1,2] 侯杰[1] 潘鹏[1,2] 杜文博[1] 沙锋强[3] 王刚 

机构地区：[1]清华大学土木工程系,北京100084 [2]清华大学结构工程与振动教育部重点实验室,北京100084 [3]北京三强同维机电液压有限公司,北京102206

出　　处：《工程抗震与加固改造》2010年第1期63-69,共7页Earthquake Resistant Engineering and Retrofitting

摘　　要：多维多点地震输入作用下,各支承点相对运动引起的拟静力反应对结构的影响目前尚无一般结论,多数情况下破坏状态可能更严重。另一方面,拟动力实验可以灵活、经济地实现多点输入动力实验,同时具有较好模拟精度,相比振动台台阵具有一定优势。因此考虑多维多点输入并研究相应拟动力实验控制有着明显的实际意义。文中推导了二维多点地震输入情况下单层连续梁桥的动力方程,引入OS(Operator Splitting)数值算法和子结构实验方法,并基于VC语言开发了二维多点拟动力实验控制软件TUTmulti。There is still no universal conclusion about the effects of the structure reaction forces under multi-support seismic excitation,and in most circumstances the reaction forces tend to lead more severe damage.In addition,the pseudo-dynamic test is more flexible and economical test method compared with the shaking table test under multi excitation,while good accuracy can be obtained.Therefore,it is necessary to study the pseudo-dynamic test under the multi excitation and the relevant test control.In this paper,the dynamic formulas of single continuous bridge under multi excitation are derived,and the OS(Operator Splitting)integration method and sub-structural test are adopted in the formulas,a test control program named TUTmulti is developed by using Visual C++ language.

关 键 词：多点输入 拟动力实验 子结构实验 单层连续梁桥 

分 类 号：U448.215[建筑科学—桥梁与隧道工程] TU317[交通运输工程—道路与铁道工程]