[1]刘爱荣,禹奇才,张俊平.大跨度连续刚架拱桥的地震响应研究[J].深圳大学学报理工版,2007,24(3):228-233.
 LIU Ai rong,YU Qi cai,and? ZHANG Jun ping.Seismic response of long span continuous rigidframe arch bridge[J].Journal of Shenzhen University Science and Engineering,2007,24(3):228-233.
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大跨度连续刚架拱桥的地震响应研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第24卷
期数:
2007年3期
页码:
228-233
栏目:
土木建筑工程
出版日期:
2007-07-30

文章信息/Info

Title:
Seismic response of long span continuous rigidframe arch bridge
文章编号:
1000-2618(2007)03-0228-06
作者:
刘爱荣禹奇才张俊平
广州大学土木工程学院,广州 510006
Author(s):
LIU AirongYU Qicaiand? ZHANG Junping
College of Civil Engineering,Guangzhou University,Guangzhou 510006,P.R.China
关键词:
拱桥 连续刚架拱桥地震响应地面空间变化多点激励行波效应有限元
Keywords:

arch bridgecontinuous rigidframe arch bridgeseismic responsespatially varying ground motionmultisupport excitationtraveling wave effectfinite element method

分类号:
U 44315;U 442
文献标志码:
A
摘要:

广州新光大桥是世界上第一座三跨连续钢桁拱与钢筋混凝土V型刚构结合的钢-混凝土组合体系桥梁,主桥跨度为(177+428+177)m.以广州新光大桥为例,研究地震动空间变化对大跨度连续刚架拱组合体系桥梁地震响应的影响.地震空间效应变化考虑了桥梁支点间横桥向和顺桥向多点激励和行波效应,研究结果表明:在不同的地震激励下桥梁的地震响应特征截然不同,地震动的空间变化对主拱肋、V型刚架的影响很大,而对边拱肋的影响相对较小;且随着剪切波速增加,主拱顶相对拱脚的纵桥向位移逐渐减小,而边拱拱顶的纵桥向位移基本不受剪切波速的影响.

Abstract:

This paper investigates the spatial variability effects of ground motion on the seismic response of longspan continuous rigidframe arch bridge.The analyses are performed on the Xinguang bridge in Guangzhou,which is the worldwide first 3span continuous rigidframe and steeltruss arch bridge with reinforced concrete Vshaped rigid frame.Its spans of the main bridge are as long as(177+428+177)m.The spatial variability of ground motions between pivots of the bridge is taken into account with multisupport excitation and traveling wave effect by exciting the bridge in both transverse and longitudinal directions of the bridge.New study shows the characteristics of seismic response of the critical bridge members are varied with different seismic excitations.The spatially varying ground motion has a considerable influence on the seismic responses of the ribs of the main arch and Vshaped rigid frame,whereas the influence on the side arch ribs is insignificantly predominant.As the shear wave velocity increases the peak longitudinal displacement of the crown of the main arch relative to the arch springing decreases,while,the effect of shear wave velocity on the longitudinal displacement of the ribs of the side arch can be neglected.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2007-5-8;修回日期:2007-5-1
基金项目:广东省科技计划资助项目(2005B10201023); 广州市科技计划资助项目(2006J1C0471); 广州市建设科技资助项目(2004047)
作者简介:刘爱荣(1972-,女(汉族),山西省吕梁市人,广州大学副教授、博士.E-ail: liu..@163.om
通讯作者:禹奇才(1955-,男(汉族),湖南省卢陵市人,广州大学教授.E-ail:zhydxs@ihw.com.cn

更新日期/Last Update: 2007-12-06