[1]杨海波,尹晓春.考虑碰撞和支座影响的桥梁近场竖向地震响应分析[J].南京理工大学学报(自然科学版),2014,38(05):581-587.
 Yang Haibo,Yin Xiaochun.Near-fault vertical earthquake response analysis of bridge considering pounding and bearing[J].Journal of Nanjing University of Science and Technology,2014,38(05):581-587.
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考虑碰撞和支座影响的桥梁近场竖向地震响应分析
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
38卷
期数:
2014年05期
页码:
581-587
栏目:
出版日期:
2014-10-29

文章信息/Info

Title:
Near-fault vertical earthquake response analysis of bridge considering pounding and bearing
作者:
杨海波尹晓春
南京理工大学 理学院,江苏 南京 210094
Author(s):
Yang HaiboYin Xiaochun
School of Sciences,NUST,Nanjing 210094,China
关键词:
近场竖向地震 桥梁 桥梁支座 碰撞 响应分析
Keywords:
near-fault vertical earthquakes bridges rubber bearing poundings response analysis
分类号:
U442.5; O313.4; O347.4
摘要:
为了精确计算带支座桥梁的近场竖向地震响应,研究了桥梁支座和竖向碰撞现象对桥梁地震响应的影响。建立了针对双跨连续梁桥的梁-弹簧-杆连续体模型,运用瞬态波特征函数展开法和组合体瞬态内力法求解了桥梁结构中地震响应和碰撞响应耦合的理论解。计算结果表明,该文方法能计算多次碰撞后桥梁结构复杂的内力响应。在近场竖向地震和多次碰撞作用下,桥梁跨中正弯矩、支座处负弯矩和桥墩底部应力高频高幅值振荡可能超过其承载能力。竖向地震提前于水平地震激励的时间越长,由单独的竖向地震引起桥梁破坏的可能性就越大。
Abstract:
To precisely calculate the near-fault vertical earthquake response of bridge with bearings,the effect of the bridge bearing and the vertical pounding on the bridge seismic response is researched.A continuous model of beam-spring-rod is applied to analysis earthquake responses of a two-span continuous beam bridge.The theoretical solutions of coupling responses of earthquake and pounding are obtained by the expansion of transient wave functions in series of eigenfunctions and the transient internal force of the contact surface of the combined impact body.The numerical results show that the present model and method can simulate reasonably the pounding phenomenon and calculate the complex responses of bridge with poundings.The positive moment of the bridge mid-span section,the negative moment of bridge above bearing section and the axial force of pier are significantly enhanced by near-fault vertical earthquakes,which even exceed ultimate carrying capacity of the bridge and lead to its damage.The longer the time of vertical earthquake ahead of horizontal earthquake is,the greater the probability leading to bridge damage only under the vertical earthquake is.

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相似文献/References:

[1]王 文,尹晓春,杨海波,等.竖向地震作用下桥梁碰撞响应的动态子结构方法[J].南京理工大学学报(自然科学版),2014,38(02):187.
 Wang Wen,Yin Xiaochun,Yang Haibo,et al.Dynamic substructure technique for pounding response of bridge under vertical earthquake[J].Journal of Nanjing University of Science and Technology,2014,38(05):187.

备注/Memo

备注/Memo:
收稿日期:2013-10-14 修回日期:2014-01-03
基金项目:国家自然科学基金(11372138); 高等学校博士学科点专项科研基金(20123219110036)
作者简介:杨海波(1986-),男,博士生,主要研究方向:结构瞬态动力学,E-mail:nlgyanghaibo@163.com; 通讯作者:尹晓春(1963-),男,博士,教授,博士生导师,主要研究方向:结构多次弹塑性撞击和瞬态振动响应,E-mail:yinxiaochun2000@aliyun.com。
引文格式:杨海波,尹晓春.考虑碰撞和支座影响的桥梁近场竖向地震响应分析[J].南京理工大学学报,2014,38(5):581-587.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2014-10-31