| 公路隧道二次衬砌纵向裂缝非线性数值模拟研究 |
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| 引用本文： | 杨华,张文正.公路隧道二次衬砌纵向裂缝非线性数值模拟研究[J].现代隧道技术,2011,48(5). |
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| 作者姓名： | 杨华 张文正 |
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| 作者单位： | 1. 同济大学建筑设计研究院,上海,200092
2. 中冶赛迪工程技术股份有限公司,重庆,400031 |
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| 摘 要： | 已建隧道普遍存在衬砌开裂现象,裂缝的存在会降低隧道衬砌的承载能力.文章为研究带裂缝隧道衬砌的力学性能,提出了塑性地压、松弛土压、偏压等三种受力裂缝数值模拟的荷载施加模式；分析了几种常见裂缝模型的原理及适用性,并且基于钢筋混凝土有限元非线性分析理论,利用分布裂缝模型进行不同荷载模式下隧道二次衬砌开裂至破坏的全过程分析；通过计算得出了不同加载方式下裂缝的发展及分布规律.研究结果可为隧道衬砌裂缝成因判断及二次衬砌加固改造提供理论支撑.
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| 关 键 词： | 衬砌裂缝 裂缝模型 数值模拟 |
Numerical Simulation Study of a Longitudinal Lining Crack of a Highway Tunnel |
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| Yang Hua,Zhang Wenzheng.Numerical Simulation Study of a Longitudinal Lining Crack of a Highway Tunnel[J].Modern Tunnelling Technology,2011,48(5). |
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| Authors: | Yang Hua Zhang Wenzheng |
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| Institution: | Yang Hua1 Zhang Wenzheng2(1 Architectural Design and Research Institute of Tongji University,Shanghai 200092,2 CISDI Engineering Co.,Ltd.,Chongqing 400013) |
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| Abstract: | Cracks exist in many built tunnel linings;these cracks reduce the bearing capacity of the tunnel lining.The numerical simulation of a load application mode regarding the plastic ground pressure,loose soil pressure and unsymmetrical pressure is presented in order to study the mechanical behaviors of cracked tunnel linings.The principles and applicability of some existing models concerning the study of cracks are examined.Then,based on finite element theory of reinforced concrete,the whole processes-from crac... |
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| Keywords: | Lining cracking Model concerning the study of cracks Numerical simulation |
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