[1]韩振峰,叶爱君.脉冲型非一致地震作用下千米级斜拉桥减震研究[J].地震工程与工程振动,2018,(02):184-193.[doi:10.13197/j.eeev.2018.02.184.hanzf.021]
 HAN Zhenfeng,YE Aijun.Research on the seismic reduction of cable-stayed bridges over kilometers under pulse-type non-uniform earthquake action[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2018,(02):184-193.[doi:10.13197/j.eeev.2018.02.184.hanzf.021]
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脉冲型非一致地震作用下千米级斜拉桥减震研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
期数:
2018年02
页码:
184-193
栏目:
论文
出版日期:
2018-08-03

文章信息/Info

Title:
Research on the seismic reduction of cable-stayed bridges over kilometers under pulse-type non-uniform earthquake action
作者:
韩振峰1 叶爱君2
1. 合肥学院 建筑工程系, 安徽 合肥 230601;
2. 同济大学 土木工程防灾国家重点实验室, 上海 200092
Author(s):
HAN Zhenfeng1 YE Aijun2
1. Department of Architectural Engineering of Hefei University, Hefei 230601, China;
2. State Key Laboratory for Disaster Reduction of Civil Engineering, Tongji University, Shanghai 200092, China
关键词:
斜拉桥脉冲型地震非一致激励减震视波速
Keywords:
cable-stayed bridgepulse type earthquakenon-uniform excitationseismic reductionapparent wave velocity
分类号:
U448.27
DOI:
10.13197/j.eeev.2018.02.184.hanzf.021
摘要:
首先考虑场地和视波速等因素,从已知脉冲型地震动合成相关点的脉冲型非一致地震动;其次建立了千米级斜拉桥有限元模型,进行了非一致地震反应分析,考虑了几何非线性,结果表明混合场地以及较低的视波速为该类型桥梁的最不利工况;然后对弹性连接和黏滞阻尼器2种减震方式进行了参数分析;最后对2种方式的减震效果进行了比较,结果表明:黏滞阻尼器在脉冲非一致地震动下的减震效果不如在一致地震动输入情况下的明显,对塔底弯矩的减震效果甚至不如弹性连接方式。修建更大跨径的斜拉桥,其脉冲非一致地震动下的减震设计,可能需要另寻它法。
Abstract:
Firstly, the pulse type non-uniform ground motions at related position were synthesized from the recorded pulse ground motions with the factors of ground condition and apparent wave velocity were considered. Secondly, the finite element model of a cable-stayed bridge over kilometers was built; the geometric nonlinearity was taken into account; the non-uniform seismic response analysis was conducted, and the results show that the mixed ground condition and lower apparent wave velocity is the most unfavorable conditions for this kind bridge. Thirdly, parameters analyses were conducted on the elastic connections and viscous dampers devices. Lastly, seismic reduction efficacy of the two devices were compared, and the results show that the viscous dampers under the non-uniform ground motion is poor than that under the uniform ground motion, and its reduction efficacy of bending moment at the tower bottom is even poor than that of elastic connection device. When building longer span cable-stayed bridge, the seismic reduction design under pulse type non-uniform ground motion may need to find another method.

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备注/Memo

备注/Memo:
收稿日期:2017-05-25;改回日期:2017-08-02。
基金项目:安徽省高校自然科学研究重点项目(KJ2015A249);合肥学院人才科研基金项目(15RC01)
作者简介:韩振峰(1976-),男,讲师,博士,主要从事桥梁抗震研究.E-mail:hanzhenfeng2010@126.com
更新日期/Last Update: 1900-01-01