| 非对称沟埋式涵洞涵-土作用机理(英文) |
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| 引用本文： | 陈保国,郑俊杰,鲁燕儿.非对称沟埋式涵洞涵-土作用机理(英文)[J].东南大学学报,2009,25(1). |
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| 作者姓名： | 陈保国 郑俊杰 鲁燕儿 |
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| 作者单位： | 陈保国,Chen Baoguo(华中科技大学土木工程与力学学院,武汉,430074;中国地质大学工程学院,武汉,430074);郑俊杰,鲁燕儿,Zheng Junjie,Lu Yan'er(华中科技大学土木工程与力学学院,武汉,430074)
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| 基金项目： | Key Plan of Science and Technology of Hubei Provincial Communication Department(No.2005-361) |
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| 摘 要： | 现行公路桥涵设计通用规范中的线性土压力理论不能准确反映非对称沟埋式涵洞结构的实际受力特性.结合现场试验和数值模拟研究了沟谷非对称设涵时,涵-土体系的受力状态和变形特性以及涵顶填土内部的土拱效应.讨论了偏栽效应对涵-土体系受力和变形的影响.研究结果表明,涵顶填土达到一定高度后填土内部产生土拱效应,该土拱效应能够缓解涵顶的应力集中,但其具有不稳定性.现场试验和数值模拟得到的涵顶土压力均大于现行公路桥涵设计通用规范的计算结果.而且偏载效应对涵-土体系的受力状态和变形特性的影响也不容忽视.
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| 关 键 词： | 土与结构物作用机理 土拱效应 偏载效应 足尺试验 数值模拟 |
Soil-structure interaction of unsymmetrical trench installation culvert |
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| Chen Baoguo, Zheng Junjie Lu Yan'er.Soil-structure interaction of unsymmetrical trench installation culvert[J].Journal of Southeast University(English Edition),2009,25(1). |
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| Authors: | Chen Baoguo Zheng Junjie Lu Yan'er |
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| Institution: | 1School of Civil Engineering and Mechanics;Huazhong University of Science and Technology;Wuhan 430074;China;2 Engineering Faculty;China University of Geosciences;China |
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| Abstract: | The computation of the design load on culverts in the current Chinese General Code for Design of Highway Bridges and Culverts(CGCDHBC)is primarily based on the linear earth pressure theory,which cannot accurately reflect the changes in vertical loads on trench installation culverts.So the changes in vertical earth pressure and soil arching effect in the backfill for an unsymmetrical trench installation culvert are studied based on a full scale experiment and finite element(FE)simulation.The variation laws o... |
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| Keywords: | soil-structure interaction soil arching effect eccentric load effect full scale experiment numerical simuiation |
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