| 寒区隧道冻胀压力的约束冻胀模型 |
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| 引用本文： | 邓刚,王建宇,郑金龙.寒区隧道冻胀压力的约束冻胀模型[J].中国公路学报,2010(1). |
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| 作者姓名： | 邓刚 王建宇 郑金龙 |
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| 作者单位： | 西南交通大学土木工程学院;四川省交通厅公路规划勘察设计研究院;中铁西南科学研究院有限公司; |
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| 基金项目： | 国家西部交通建设科技项目(200431800029) |
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| 摘 要： | 评价了中国主要的冻胀压力分析模型,在存水空间模型的基础上,分析了冻胀水体的形变约束特征,提出了冻胀压力类似于气体压力的约束冻胀模型,并给出了相应的理论分析公式;计算分析了冻胀压力的作用位置、冻胀水体尺度、围岩和衬砌刚度等对衬砌结构安全度的影响及分布规律。结果表明:该模型表现了冻胀压力为局部荷载的特征,同时考虑了衬砌和围岩刚度对冻胀压力的影响,并可模拟存水空间内的冻胀水体为任何多面体形状;增加衬砌刚度仍是提高衬砌抗冻能力的有效措施。
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| 关 键 词： | 隧道工程 寒区隧道 约束冻胀模型 冻胀压力 衬砌刚度 结构安全度 |
Model of Constraint on Deformation Due to Frost Heave for Tunnels in Cold Region |
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| DENG Gang,WANG Jian-yu,ZHENG Jin-long.Model of Constraint on Deformation Due to Frost Heave for Tunnels in Cold Region[J].China Journal of Highway and Transport,2010(1). |
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| Authors: | DENG Gang WANG Jian-yu ZHENG Jin-long |
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| Institution: | DENG Gang1,2,WANG Jian-yu3,ZHENG Jin-long2(1. School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China,2. Highway Planning Survery,Design , Research Institute of Communications Department of Sichuan Province,Chengdu 610041,3. Southwest Research Institute Co.,Ltd of C.R.E.C.,China) |
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| Abstract: | Authors evaluated main models for analyzing frost heave pressures in China. Based on the water space model,the characteristics of the deformation constraints on the frost heave waters were investigated. A model of constraint on deformation due to frost heave was proposed. The corresponding theoretical analysis formula was given. The location of the frost heave pressures,scales of frost water,the effects of the stiffness of surrounding rock and lining on the structural safety of lining,and distribution rules... |
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| Keywords: | tunnel engineering tunnel in cold region model of constraint on deformation due to frost heave frost heave pressure stiffness of lining structural safety |
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