[1]陈兴冲,高峰,严松宏,等.多年冻土区桥梁的地震反应[J].世界地震工程,2005,(04):026-31.
 CHEN Xing-chong,GAO Feng,YAN Song-hong,et al.Seismic response of bridges in the permafrost region[J].,2005,(04):026-31.
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多年冻土区桥梁的地震反应
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2005年04期
页码:
026-31
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Seismic response of bridges in the permafrost region
作者:
陈兴冲 高峰 严松宏 王常峰
兰州交通大学 土木工程学院 甘肃 兰州 730070
Author(s):
CHEN Xing-chong GAO Feng YAN Song-hong WANG Chang-feng
Lanzhou Jiaotong University Lanzhou 730070 China
关键词:
桥梁桥墩地震反应冻土波动法
Keywords:
bridgebridge pierseismic responsefrozen soilwave method
分类号:
U448
摘要:
首先研究了冻土区桥梁的抗震计算方法,对波动法和惯性力法的计算结果进行了对比分析。对比结果表明惯性力法的计算结果偏大,但当基岩的剪切波速很大时,两种方法的结果接近。然后,采用波动法对季节性冻土区和多年冻土区桥梁结构进行了地震反应分析,研究了冻土层的变化对桥梁结构地震反应的影响,得到了不同冻土厚度、不同墩高时桥墩地震内力分布的规律。计算结果表明,冻土层的存在对桥梁的地震反应具有显著影响,桥墩的地震反应在冬夏两季具有显著区别。
Abstract:
The seismic design methods of bridges in the permafrost region are studied firstly.The wave method and the inertial force method are compared.The result of comparison indicates that the calculation result of the inertial force method is larger than the result of the wave method.The two methods can get conformable results when the shear wave velocity of the base rock is very large.Then the wave method is used to calculate the seismic response of the bridges in seasonal frozen or permafrost regions.The influence of frozen soil layer on the seismic response of the bridges is studied.The seismic force distribution of the bridges is gained under various conditions of the frozen soil thickness and the height of bridge piers.The calculated results indicate that the frozen soil layer has remarkable effect on the seismic response of the bridges,and the seismic response of the bridges in winter and summer season have remarkable distinction.

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备注/Memo

备注/Memo:
收稿日期:2005-4-16;改回日期:2005-9-23。
基金项目:铁道部基金项目(2001G004);兰州交通大学“青蓝”人才工程基金资助计划资助
作者简介:陈兴冲(1963- ),男,江苏启东人,教授,博士生导师,主要从事桥梁抗震研究.
更新日期/Last Update: 1900-01-01