| 温度及收缩荷载下路基上双块式无砟轨道力学及裂缝特性研究 |
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| 引用本文： | 吴斌,张勇,曾志平,徐庆元,李平.温度及收缩荷载下路基上双块式无砟轨道力学及裂缝特性研究[J].铁道科学与工程学报,2011,8(1):19-23. |
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| 作者姓名： | 吴斌 张勇 曾志平 徐庆元 李平 |
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| 作者单位： | 中南大学土木建筑学院,湖南,长沙,410075 |
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| 基金项目： | 中南大学前沿研究计划重点项目(2010QZZD018); 国家自然科学基金资助项目(50908236); 湖南省自然科学基金资助项目(09JJ4022); 高等学校博士学科点专项科研基金资助课题(20090162120038); 中国博士后科学基金资助项目(20080440993); 中铁第四勘察设计院科技开发项目(2008K01) |
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| 摘 要： | 温度及收缩荷载是双块式无砟轨道的重要荷载.以路基上双块式无砟轨道为研究对象,道床板中钢筋用梁单元模拟,道床板、双块式轨枕、支承层以实体单元模拟,道床板混凝土与钢筋、支承层与路基之间的连接用弹簧单元模拟,建立了考虑混凝土开裂的钢筋与混凝土相互作用有限元力学模型,并编制了相应的计算程序.研究了温度及收缩荷载下路基上双块式无...
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| 关 键 词： | 温度荷载 收缩荷载 双块式无砟轨道 力学特性 裂缝宽度 |
Study on mechanics and crack behavior of twin-block ballastless track on subgrade under the temperature and shinkage load |
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| WU Bin
,
ZHANG Yong
,
ZENG Zhi-ping
,
XU Qing-yuan
,
Li Ping.Study on mechanics and crack behavior of twin-block ballastless track on subgrade under the temperature and shinkage load[J].Journal of Railway Science and Engineering,2011,8(1):19-23. |
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| Authors: | WU Bin ZHANG Yong ZENG Zhi-ping XU Qing-yuan Li Ping |
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| Institution: | WU Bin,ZHANG Yong,ZENG Zhi-ping,XU Qing-yuan,Li Ping(School of Civil and Architectural Engineering,Central South University,Changsha 410075,China) |
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| Abstract: | Temperature and shrinkage load are the important load of twin-block ballastless track.The paper regarded twin-block ballastless track on subgrade as the research object.The steels in track concrete layer were simulated by beam element;the track concrete layer,the twin-block sleeper,the support layer were simulated by solid element;the concrete and the steels in the track concrete layer,the support layer and subgrade were simulated by the spring element.A mechanics model of interaction of the steel bar and t... |
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| Keywords: | temperature load shrinkage load twin-block ballastless track mechanical behavior crack width |
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