| 隧道洞壁剪应力分布特征及影响因素分析 |
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| 引用本文： | 习小华,谷拴成. 隧道洞壁剪应力分布特征及影响因素分析[J]. 西安科技大学学报, 2011, 31(5) |
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| 作者姓名： | 习小华 谷拴成 |
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| 作者单位： | 1. 西安科技大学土木与建筑工程学院,陕西西安710054;江西省交通科学研究院,江西南昌330038
2. 西安科技大学土木与建筑工程学院,陕西西安,710054 |
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| 摘 要： | 以隧道围岩位移为参量,推导出仅由围岩变形而产生的隧道洞壁剪应力计算公式.根据隧道洞壁剪应力计算公式可知,影响隧道洞壁剪应力分布的因素有隧道洞壁的部位、围岩弹性模量、隧道半径、锚杆间距、初始地应力因素.本文详细分析了隧道洞壁剪应力的分布特征以及这5个因素对隧道洞壁剪应力分布的影响程度,为隧道的支护设计提供了参考.
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| 关 键 词： | 剪应力 围岩弹性模量 隧道半径 初始地应力 |
Analysis of influencing factors and distribution characteristics of tunnel wall shear stress |
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| XI Xiao-hua,GU Shuan-cheng. Analysis of influencing factors and distribution characteristics of tunnel wall shear stress[J]. JOurnal of XI’an University of Science and Technology, 2011, 31(5) |
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| Authors: | XI Xiao-hua GU Shuan-cheng |
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| Affiliation: | XI Xiao-hua 1,2,GU Shuan-cheng1 (1.College of Architecture and Civil Engineering,Xi'an University of Science and Technology,Xi'an 710054,China,2.Jiangxi Transportation Research Institute,Nanchang 330038,China) |
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| Abstract: | Based on the displacement formula of the tunnel surrounding rock,the shear stress computing formula of the tunnel wall is educed.The influencing factors of tunnel surrounding rock shear stress are tunnel wall position,elastic modulus of surrounding rocks,tunnel radius,anchor pitch and initial geostress,according to the shear stress computing formula of the tunnel wall.The authors analyze the distribution characteristics on the shear stress of the tunnel wall and influence degree of the five factors to shear... |
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| Keywords: | shear stress elastic modulus of surrounding rocks tunnel radius initial geostress |
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