| 公轨两用拱桥吊杆疲劳多因素分析 |
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| 引用本文： | 吴骏,郭文华.公轨两用拱桥吊杆疲劳多因素分析[J].铁道科学与工程学报,2012(1):74-78. |
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| 作者姓名： | 吴骏 郭文华 |
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| 作者单位： | 贵州省交通规划勘察设计研究院股份有限公司;中南大学土木工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(51078356);铁道部科技研究开发计划重大项目(2008G031-Q) |
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| 摘 要： | 基于吊杆疲劳的分析方法,以某公轨两用拱桥为研究对象,采用有限元程序建立该桥的空间有限元模型,对其吊杆进行疲劳计算,分析了小于30 kN的汽车车辆荷载、车道分布、荷载谱类型和运营时期等因素对吊杆疲劳的影响.计算结果表明:小于30 kN的车辆对吊杆疲劳有一定影响；短吊杆在设计基准期内的损伤度相对较大；轻轨车车流比汽车车流对...
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| 关 键 词： | 公轨两用桥 疲劳 吊杆 |
Multivariate fatigue analysis for suspender of highway-railway combined bridge |
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| WU Jun,GUO Wen-hua.Multivariate fatigue analysis for suspender of highway-railway combined bridge[J].Journal of Railway Science and Engineering,2012(1):74-78. |
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| Authors: | WU Jun GUO Wen-hua |
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| Institution: | 1.Guizhou Communication Planning Survey & Design Academy Co.,Ltd,Guiyang 550001,China; 2.School of Civil Engineering Central South University,Changsha 410075,China) |
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| Abstract: | Based on the fatigue analysis method of suspender,taking the highway-railway combined arch bridge as study objective,the special finite element model of the bridge was established by finite element program to calculate the fatigue of its suspender,and the fatigue effects of less than 30kN load of motor vehicles,lane distribution,load spectral type,and operating period on the suspender were analyzed.The results show that the less than 30kN load of motor vehicles have some impact on the fatigue of the suspender;the short suspender is easier to destroy in design reference period;the influence of light rail vehicle traffic on the boom is larger than the car traffic;the results,which are obtained by fatigue analysis of the suspender with different load spectrals,are differentiated;the fatigue damage of the suspender does not occur in design reference period under cyclic loading of the cars and light rail vehicles. |
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| Keywords: | highway-railway combined bridge fatigue suspender |
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