西南交通大学学报 2008, 43(5) 660-665 DOI:     ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
钢桁拱桥
轨道横梁
半刚性连接
疲劳荷载
内力历程
本文作者相关文章
卫星
李俊
强士中
刘德军
PubMed
Article by WEI Xing
Article by LI Jun
Article by QIANG Shizhong
Article by LIU Dejun

大跨钢桁拱轨道横梁半刚性连接的疲劳荷载

卫星, 李俊, 强士中, 刘德军

西南交通大学土木工程学院, 四川, 成都, 610031

摘要

为评定公路与轻轨两用钢桁拱桥轨道横梁与主桁半刚性连接在车辆荷载作用下的疲劳损伤累积,对该构造细节在桥梁设计寿命期内车辆荷载产生的疲劳荷载谱的计算方法进行了研究.针对我国公路桥梁设计规范暂无疲劳荷载规定的情况,参照美国AASHTO规范,建立了反映桥梁设计寿命期内真实运营状况的疲劳荷载模型,并通过全桥三维有限元分析计算了该构造细节的荷载历程.根据疲劳损伤累积理论,确定了钢桁拱轨道横梁与主桁半刚性连接的疲劳试验荷载.

关键词 钢桁拱桥   轨道横梁   半刚性连接   疲劳荷载   内力历程  

Fatigue Load for Semi-rigid Connection of Rail Floor Beam of Long-Span Steel Truss Arch Bridges

WEI Xing, LI Jun, QIANG Shizhong, LIU Dejun

School of Civil Eng., Southwest Jiaotong University, Chengdu 610031, China

Abstract:

In order to estimate the fatigue damage accumulation of semi-rigid connection between the rail floor beam and truss of a steel truss arch bridge bearing light rail transit and highway vehicle loads,fatigue load spectrum,produced due to traffic loads in the designed service life of the bridge,for the semi-rigid connection was investigated.Based on the analysis of traffic loads and the AASHTO specification,a fatigue load model to reflect the actual running state of the bridge during the designed service life was established.A 3-D finite element analysis was made to simulate the load history for the semi-rigid connection.Based on the fatigue damage accumulation theory,fatigue test load for the semi-rigid connection was determined.

Keywords: steel truss arch bridge   rail floor beam   semi-rigid connection   fatigue load   internal force history  
收稿日期 2008-03-12 修回日期  网络版发布日期  
DOI:
基金项目:

交通部西部交通建设科技项目(200431822317)

通讯作者:
作者简介: 卫星(1976- ),男,讲师,工学博士,研究方向为钢桥疲劳与稳定,电话:028-87634830,E-mail:we_star@163.com

参考文献:
[1] 钱冬生.钢桥疲劳设计[M].成都:西南交通大学出版社,1986:1-10.
[2] FISHER J W.Fatigue and fracture in steel bridges[M].New York:John Wiley & Sons,Inc.,1984:279-285.
[3] 中华人民共和国交通部.JTJ025-86公路桥涵钢结构及木结构设计规范[S].北京:人民交通出版社,1988.
[4] British Standard Institution.BS5400 Part10:code of practice for fatigue[S].London:British Standard Institution,1980.
[5] AASHTO.LRFD bridge design specifications[S].Washington:AASHTO,2005.
[6] 童乐为,沈祖炎,陈忠延.城市道路桥梁的疲劳荷载谱[J].土木工程学报,1997,30(5):20-27.TONG Lewd,SHEN Zuyan,CHEN Zbongyan.Fatigue load spectrum for urban road bridges[J].China Civil Engineering Journal,1997,30(5):20-27.
[7] COHEN H,FU G K,DEKELBAB W.Predicting truck load spectra under weight limit changes and its application to steel bridge fatigue assessment[J].Journal of Bridge Engineering,2003,8(5):312-322.
[8] 包立新,卫星,李俊,等.钢箱梁斜拉桥索梁锚固区的抗疲劳性能试验研究[J].工程力学,2007,24(8):127-132.BAO Lixin,WEI Xing,LI Jun,et al.Model test for fatigue performance of anchorage in cable-stayed bridge with steel box girder[J].Engineering Mechanics,2007,24(8):127-132.
[9] 文曙东,卫星,李俊,等.重庆石板坡长江大桥钢-混凝土结合段疲劳试验荷载研究[J].世界桥梁,2007(2):51-53.WEN Shudong,WEI Xing,LI Jtm,et al.Study of fatigue test load for steel and concrete joint part of Shibanpo Yangtze River bridge in Chongqing[J].World Bridges,2007(2):51-53.
[10] 任伟平,李小珍,李俊,等.公轨两用钢桁桥轨道横梁与整体节点连接头的疲劳荷载[J].中国公路学报,2007,20(1):79-84.REN Weiping,LI Xiaozhen,LI Jun,et al.Fatigue load of welded connections between rail across beams and integral joints of combined steel truss bridges[J].China Journal of Highway and Transport,2007,20(1):79-84.
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