摘要
该文主要描述了由部分填充钢管混凝土桥墩组成的五跨连续梁桥在顺桥及横桥方向受E2地震作用产生的动力反应并对各个桥墩进行了抗震性能评价。采用的地震动为1995日本兵库县南部地震在神户海洋气象台记录的JMA的NS和EW成分。动力分析采用桥梁抗震设计专用软件TDAPⅢ。在桥梁分析模型中,桥墩采用非线性纤维单元,上部结构和桥台采用弹性梁单元,基础采用节点弹簧单元,橡胶支座采用剪切弹簧单元。从动力分析结果可知桥墩在横桥方向的响应大于顺桥方向,但在横桥方向E2地震动作用下该座桥的桥墩仍处于安全状态。
In this paper,the nonlinear time-history analysis of a five-span continuous viaduct bridge under E2 earthquake motion is carried out in the longitudinal direction and transverse direction of the bridge separately.And the seismic performance of these partially concrete-filled steel bridge piers of Viaduct Bridge is evaluated.The NS and EW components of seismic waves recorded at the Japanese Metrological Agency（JMA） in the 1995＇s Hyogo-ken Nanbu Earthquake and special seismic analysis program TDAPⅢ（time domain 3-dimensional dynamic analysis program） are used in this analysis.In this analytical model,these piers are idealized by a 3-D fiber element;the superstructure and abutment are idealized by a 3-D beam element;the foundation and bearing are idealized by a spring element.From analytical results,it is found that the responsive displacement and force of piers in the transverse direction of the bridge is larger than that of the longitudinal direction.And it is found these piers of Viaduct Bridge should be safe under E2 earthquake motion,too.
出处
《工程力学》
EI
CSCD
北大核心
2011年第A01期189-194,共6页
Engineering Mechanics
基金
国家教育部回国留学人员基金项目(2008jyb-02)
辽宁省教育厅基金项目(L2010462)
关键词
桥梁
桥墩
非线性时程分析
E2地震动
抗震性能
bridge
bridge pier
nonlinear time-history analysis
E2 earthquake motion
seismic performance
