西凌井大桥动力特性及E1反应谱地震作用分析  

Analysis of Dynamic Characteristics and E1 Response Spectrum Seismic Action of Xiling Jing Bridge

作　　者：张晋媛 ZHANG Jin-yuan(Shanxi Province Communications Planning Surveying and Designing Institute Co.,Ltd.,Taiyuan,Shanxi 030000,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,山西太原030000

出　　处：《黑龙江交通科技》2022年第5期82-85,共4页Communications Science and Technology Heilongjiang

摘　　要：以太原北二环高速公路西凌井大桥为工程实例,采用有限元分析程序midas Civil,基于空间梁单元建立三维有限元模型。研究了该桥在桩土共同作用约束边界条件下的自振动力特性;进行了E1反应谱地震作用分析,讨论了其在CQC振型组合下的地震响应最大值,验算了E1地震作用下桥梁相关构件的强度。An engineering design case about the Xiling Jing Bridge on the north second Ring Highway in Taiyuan was investigated,using the finite element analysis program midas Civil.3-D beam element was used in the dynamic FEM model.In the paper,the natural characteristics of the bridge under the bound boundary conditions of pile and soil interaction were studied.The seismic action of E1 response spectrum was analyzed,the maximum seismic response of the bridge under CQC combination was discussed and the strengths of related bridge components under E1 earthquake were checked.

关 键 词：自振动力特性 桩土共同作用 反应谱法 E1地震反应分析 

分 类 号：U442[建筑科学—桥梁与隧道工程]