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桥墩截面形式对弯连续刚构桥地震响应的影响
引用本文:周勇军,贺拴海,张岗,宋一凡. 桥墩截面形式对弯连续刚构桥地震响应的影响[J]. 公路交通科技, 2009, 26(2)
作者姓名:周勇军  贺拴海  张岗  宋一凡
作者单位:长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064
基金项目:交通部西部交通建设科技项目 
摘    要:为了研究桥墩截面形式对弯连续刚构桥动力及地震响应的影响,以某工程实例为背景,建立了空间有限元分析模型,研究了桥墩外形尺寸、截面面积、截面纵向刚度等参数对结构自振特性的影响,在此基础上,利用线弹性时程法,对比分析了这些参数变化对空心墩与实心墩结构地震响应的影响。研究结果表明,桥墩截面形式的不同使得结构的振型系列发生了改变,具有空心墩的连续刚构桥与具有实心墩的连续刚构桥相比,当两者的外形尺寸相同时,前者的频率较低,当两者桥墩面积相同时,前者频率较高,在纵向刚度相同的情况下,前者频率稍低;采用空心墩时,墩底应力及主梁位移比相应实心墩的小,当桥墩纵向刚度相同时,空心墩和实心墩的地震响应基本相同。

关 键 词:桥梁工程  弯连续刚构桥  时程分析法  有限元  地震响应

Effect of Pier Section Type on Seismic Response of Curved Continuous Rigid Frame Bridge
ZHOU Yongjun,HE Shuanhai,ZHANG Gang,SONG Yifan. Effect of Pier Section Type on Seismic Response of Curved Continuous Rigid Frame Bridge[J]. Journal of Highway and Transportation Research and Development, 2009, 26(2)
Authors:ZHOU Yongjun  HE Shuanhai  ZHANG Gang  SONG Yifan
Affiliation:Key Laboratory for Bridge and Tunnel of Shaanxi Province;Chang'an University;Xi'an Shaanxi 710064;China
Abstract:In order to study the influence of pier section on the dynamic and seismic responses of curved continuous rigid frame bridge,a current bridge was taken as an example,and its finite element model was set up to analyze three parameters' effects on the structure's natural vibration characteristics.The parameters include external dimensions,section area and section longitudinal rigidity of the pier.Then liner elastic time history analysis method was adopted to deduce the effects of the parameters on the seismic...
Keywords:bridge engineering  curved continuous rigid frame bridge  time history analysis method  FEM  earthquake response  
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