| 基于岩石非线性统一强度理论的地下洞室弹塑性分析 |
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| 引用本文： | 张斌伟,严松宏,吕亮,闻雁.基于岩石非线性统一强度理论的地下洞室弹塑性分析[J].兰州铁道学院学报,2007,26(6):25-28. |
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| 作者姓名： | 张斌伟 严松宏 吕亮 闻雁 |
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| 作者单位： | 兰州交通大学土木工程学院 甘肃兰州730070(张斌伟，严松宏，闻雁)，长达路业有限责任公司 甘肃兰州730010(吕亮) |
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| 摘 要： | 采用岩石非线性统一强度理论考虑了岩体的塑性软化特性,利用衬砌与围岩的位移协调条件,对地下圆形洞室进行了弹塑性分析,获得了圆形洞室的应力,洞室变形及塑性区半径的解,这些解既考虑了岩石拉压强度相差较大的特点,又考虑了中间主应力效应及其区间性;既反映了岩石的非线性破坏特征,又可以推广到岩体及节理岩体之中去,有一定的理论及工程应用价值.
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| 关 键 词： | 强度理论 岩石非线性 地下工程 弹塑性分析 |
| 文章编号： | 1001-4373（2007）06-0025-04 |
| 收稿时间： | 2007-05-21 |
| 修稿时间： | 2007年5月21日 |
Elastic-Plastic Analysis of Circular Tunnel Based on the Nonlinear Unified Strength Theory of Rock |
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| Zhang Binwei,Yan Songhong,Lu Liang,Wen Yan.Elastic-Plastic Analysis of Circular Tunnel Based on the Nonlinear Unified Strength Theory of Rock[J].Journal of Lanzhou Railway University,2007,26(6):25-28. |
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| Authors: | Zhang Binwei Yan Songhong Lu Liang Wen Yan |
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| Abstract: | The elastic-plastic analysis of circular tunnel,considering the effect of the intermediate principal stress,is carried out by using the nonlinear unified strength theory of rock and gets the solution of stress,displacement and radius of plastic zoon.Those solutions not only consider the characteristics of the favorable differences of the rock strength in press and tensile,but also the intermediate principal stress and the nonlinear failure of rock.The nonlinear unified strength theory of rock reflects the characteristics of the nonlinear destruction of rock,and can also be used in mass rock.The theory has its theoretical and engineering application value. |
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| Keywords: | strength theory nonlinear failure of rock underground engineering elastic-plastic analysis |
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