| 喷锚初期支护——围岩稳定性强度折减有限元分析(英文) |
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| 引用本文： | 章杨松,李晓昭. 喷锚初期支护——围岩稳定性强度折减有限元分析(英文)[J]. 科学技术与工程, 2008, 8(24) |
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| 作者姓名： | 章杨松 李晓昭 |
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| 作者单位： | 1. 南京理工大学,南京,210094
2. 南京大学,南京,210093 |
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| 基金项目： | 国家自然科学基金 |
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| 摘 要： | 岩石隧道施工阶段具喷锚初期支护的围岩稳定性评价对隧道施工安全是非常重要的。根据一施工中的岩石隧道Ⅳ级围岩地段地质条件为基础，选用ABAQUS程序双曲线型D-P材料模型为岩土体破坏准则，建立了考虑喷射混凝土与岩体之间，锚杆与岩体之间相互作用的3-D有限元计算模型，以此模型利用强度折减技术研究了具锚喷初期支护的围岩稳定性安全系数。分析表明采用所提出的极限状态确定具喷锚支护的围岩稳定性安全系数是合理的。
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| 关 键 词： | 隧道 喷锚支护 3D数值分析 强度折减技术 安全系数 |
Strength-reduction Finite Element Analysis for Stability of Surrounding Rock Mass with Primary Shotcrete and Rock Bolts |
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| ZHANG Yang-song,LI Xiao-zhao. Strength-reduction Finite Element Analysis for Stability of Surrounding Rock Mass with Primary Shotcrete and Rock Bolts[J]. Science Technology and Engineering, 2008, 8(24) |
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| Authors: | ZHANG Yang-song LI Xiao-zhao |
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| Affiliation: | ZHANG Yang-song,LI Xiao-zhao1(Nanjing University of science , technology,Nanjing 210094,P.R.China,Nanjing University1,Nanjing 210093,P.R.China) |
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| Abstract: | The overall stability evaluation of tunnel surrounding rock mass with primary shotcrete and rock bolts in construction stage is very important for construction safety.Based on geologic conditions of class IV surrounding rock mass in one constructing tunnel,the safety factor of the overall stability of tunnel surrounding rock mass with shotcrete and rock bolts is investigated using ABAQUS through three-dimensional(3D)finite element strength reduction technique coupled with the Hyperbolic Drucker-Prager elast... |
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| Keywords: | tunnel shotcrete linning and rock bolts 3D numerical analysis strength reduction technique factor of safety |
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