| 软岩隧道中锚杆与岩体的相互作用模型研究 |
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| 引用本文： | 姚国圣,李镜培,谷拴成.软岩隧道中锚杆与岩体的相互作用模型研究[J].地下空间与工程学报,2007,3(Z1):1216-1219. |
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| 作者姓名： | 姚国圣 李镜培 谷拴成 |
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| 作者单位： | 1. 同济大学,岩土及地下工程教育部重点实验室,上海,200092;同济大学,地下建筑与工程系,上海,200092
2. 西安科技大学,建筑与土木工程学院,西安,710054 |
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| 摘 要： | 采用改进的剪应力滞后模型,对软岩隧道中锚杆的作用机理提出了一种分析方法,根据应力-应变关系分析锚杆和岩体之间的联合作用机理.应用于工程实例,根据现场监测数据及数值模拟分析,验证通过该模型计算所得的轴向应力的正确性,并确定不同锚杆长度的中性点位置,验证了软岩锚固中性点的存在,指出软岩隧道锚杆支护设计中应注意锚杆与岩体的相互作用.
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| 关 键 词： | 软岩 锚杆 相互作用 模型 隧道 |
| 文章编号： | 1673-0836(2007)07-1216-04 |
| 修稿时间： | 2007年8月10日 |
Study on the Interaction Model of Rock Bolt and Rock Mass in Soft Rock Tunnel |
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| YAO Guo-sheng,LI Jing-pei,GU Shuan-cheng.Study on the Interaction Model of Rock Bolt and Rock Mass in Soft Rock Tunnel[J].Chinese Journal of Underground Space and Engineering,2007,3(Z1):1216-1219. |
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| Authors: | YAO Guo-sheng LI Jing-pei GU Shuan-cheng |
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| Abstract: | An analytical method for the mechanism of rock belt in soft rock is presented based on the improved Shear-Lag model.Coupling mechanism of rock bolt and rock mass are analyzed from the viewpoint of the relation- ship between the stress and strain.Case simulations and the analysis of the field monitoring data and numerical simu- lation confirm the axial force calculated by the model presented in this paper.And the position of neutral point of dif- ferent rock bolt length is determined,which proves the previous theory about the neutral point proper.The interaction of the rock belt and rock mass should be considered in the anchoring supporting design of the soft rock tunnel. |
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| Keywords: | soft rock rock bolt interaction model tunnel |
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