大跨长联预应力混凝土连续梁桥地震响应  

Seismic Response of the Large Span Prestressed Concrete Continuous Girder Bridge

作　　者：余钱华[1] 夏培华[1] 宋泽冈 张凯[1] 

机构地区：[1]长沙理工大学土木与建筑学院,湖南长沙410076 [2]云南省公路科学技术研究所,云南昆明650051

出　　处：《重庆交通大学学报（自然科学版）》2009年第1期1-4,共4页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：大跨长联预应力混凝土连续梁桥一般只设一个固定支座,由于桥跨较长,因此固定墩承担的纵向地震响应也就相当大。采用反应谱法,讨论了不同支座约束类型对连续梁桥固定墩和固定支座地震响应的影响;计算结果表明,不同的支座约束类型对连续梁桥地震响应影响较大;同时还分析了桩-土相互作用对连续梁桥动力特性及地震响应的影响。In general, large span of continuous prestressed concrete girder bridges only place one fixed buttress. For the bridge span is longer, the vertical seismic response of a fixed pier is also correspondingly larger. Using response spectrum, the impact of the seismic response of different types of bearings bound for a fixed bridge pier and fixed bearing is discussed. The results show that different types of restraint bearing have a greater impact on the seismic response of continuous bridge. At the same time, the impact of pile-soil interaction on continuous bridge dynamic characteristics and the seismic response is also analyzed. The results of this research can provide references for the anti-seismic design of similar bridges.

关 键 词：连续梁桥 地震响应 反应谱 桩-土效应 活动支座 固定支座 

分 类 号：U448.21[建筑科学—桥梁与隧道工程]