钢制电缆桥架结构抗震动力响应影响因素分析  

ANALYSIS OF THE DYNAMIC RESPONSE INFLUENCE FACTORS OF STEEL CABLE BRIDGE STRUCTURE

作　　者：胡服全 朱翊洲[2] 高文军[3] 杨培勇 何铮 李鹏飞 

机构地区：[1]国核华清核电技术研发中心有限公司,北京102209 [2]上海核工程研究设计院,上海200233 [3]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《钢结构》2016年第11期15-18,46,共5页Steel Construction

基　　金：国家科技重大专项经费资助项目(2012ZX06004-012)

摘　　要：针对钢制电缆桥架结构进行抗震动力响应影响因素研究,在模拟振动台上搭建了测试系统,采用白噪声激励,进行了激励方向、激励强度和载重影响试验,分析了电缆桥架立柱顶部测点的加速度响应,根部测点的应变响应。分析结果表明:激励方向、激励强度和载重对加速度和应变响应有影响,三向激励比单向激励的峰值加速度和应变大,阻尼比随激励强度增大而增大,频率随载重增大而减小。The influence factors of the seismic dynamic response of the steel cable bridge were studied,the test system was built on the seismic platform. Using white noise excitation,the excitation direction,excitation intensity and loading effect tests were carried out,the acceleration response and strain response of the cable bridge at measuring points of the top column were analyzed. The results showed that the excitation direction,intensity and load had a great influence on the seismic response of the acceleration and strain,the peak acceleration and strain of three direction excitation were larger than the unidirectional excitation,the damping ratio increased with the increase of the excitation intensity,the frequency decreased with the increase of load.

关 键 词：电缆桥架 动力响应 频率 阻尼比 比较 

分 类 号：TU391[建筑科学—结构工程] TU311.3