中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2011, Vol. 30 ›› Issue (4): 712-716.DOI: 10.3969/j.issn.1674-0696.2011.04.002

• • 上一篇    下一篇

基于功率谱法分析场地效应对大跨度 连续刚构桥的影响

熊欢1,张犇2,魏陆垚3,王子健3   

  1. 1. 中铁二院武汉勘察设计研究院有限责任公司,湖北武汉430071; 2. 重庆市市政设施管理局,重庆401147; 3. 重庆交通大学土木建筑学院,重庆400074 摘要: 以一座全长为346 m 的预应力混凝土连续刚构桥为基础,建立全桥计算模型,采用由规范反应谱生成的相应 的功率谱,分6 种工况对桥梁进行激励; 通过多点激励与一致激励的对比,
  • 收稿日期:2011-04-26 修回日期:2011-05-09 出版日期:2011-08-15 发布日期:2015-01-22
  • 作者简介:熊欢(1986—),男,湖北荆州人,硕士,主要从事桥梁抗震方面的研究工作。E-mail:xionghuan000@163.com。
  • 基金资助:
    国家自然科学基金项目(50879097)

Influence on Long-span Continuous Rigid Framed Bridge of Site Effect Based on Power Spectrum Method

XIONG Huan1,ZHANG Ben2,WEI Lu-yao3,WANG Zi-jian3   

  1. 1. Wuhan Survey and Design Institute Co. ,Ltd. of CREEC,Wuhan 430071,Hubei,China; 2. Chongqing Municipal Inprastructure Administrafion Bureau,Chongqing 401147,China; 3. School of Civil Engineering and Architecture,Chongqing Jiaotong University,Chongqing 400074,China
  • Received:2011-04-26 Revised:2011-05-09 Online:2011-08-15 Published:2015-01-22

摘要: 以一座全长为346 m 的预应力混凝土连续刚构桥为基础,建立全桥计算模型,采用由规范反应谱生成的相应 的功率谱,分6 种工况对桥梁进行激励; 通过多点激励与一致激励的对比,分析了场地效应对连续刚构桥的影响。 结果表明: 对于高墩大跨度连续刚构桥,场地效应主要对跨中截面不利,并使桥墩墩底内力产生突变。 关键词: 反应谱; 功率谱; 场地效应; 多点激励

关键词: 反应谱, 功率谱, 场地效应, 多点激励

Abstract: A computing model of the entire bridge was established based on a prestressed concrete continuous rigid framed bridge,which was 346m. The bridge was to be excited under six working conditions respectively using the power spectrum generated from standard response spectrum. By compared multi-support excitation with uniform excitation,this essay analyses the influence of site effect on continuous rigid framed bridge. The research result indicates that for continuous rigid framed bridge of high piers and long span,site effect is mainly disadvantageous to the mid-span cross-section of girders, and can cause a abrupt change of internal force of the bottom of piers.

Key words: response spectrum, power spectrum, site effect, multi-support excitation

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