一致激励与多点激励对悬索桥地震响应影响分析  

Analysis of the Influence of Uniform Excitation and Multi-point Excitation on the Seismic Response of Suspension Bridge

作　　者：李丽[1] 赵国峰[1] 李吉 景鹏旭 蒋宏毅[4] Li Li;Zhao Guofeng;Li Ji;Jing Pengxu;Jiang Hongyi(China Earthquake Networks Center,Beijing 100045,China;China 19th Metallurgical Corporation,Chengdu 610031,China;National Earthquake Response Support Service,Beying 100049,China;Hebei Earthquake Agency,Shijiazhuang 050021,China)

机构地区：[1]中国地震台网中心,北京100045 [2]中国十九冶集团有限公司,成都610031 [3]中国地震应急搜救中心,北京100049 [4]河北省地震局,石家庄050021

出　　处：《震灾防御技术》2020年第2期252-259,共8页Technology for Earthquake Disaster Prevention

基　　金：国家地震科学数据中心项目(12050312901)。

摘　　要：利用大型通用有限元软件ANSYS的APDL参数化语言,建立某悬索桥结构三维有限元模型,通过加速度时程积分曲线,获得相应的位移时程曲线,在桥台及桥墩处施加位移时程荷载,分析桥梁结构多点激励地震响应,并分析一致激励与多点激励下桥梁关键位置位移、内力差异,研究不同激励方式的影响。Using the APDL parametric language of the general finite element software ANSYS, a three-dimensional finite element model of the structure of a suspension bridge was established. Through the integration of acceleration time history, the corresponding displacement time history is derived. With the input of displacement time history on the bridge abutment and bridge pier, the seismic response of bridge structure under multi-support excitation is analysized, and the internal force and deformation is compared with those derived under uniform excitation. The influence of different excitation on bridge is concluded.

关 键 词：悬索桥 多点激励 地震响应影响 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] U448.25[交通运输工程—道路与铁道工程]