| 旋喷桩在偏压隧道围岩加固中的数值分析及应用 |
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| 引用本文： | 杨秀竹,黄建陵,赵建群,雷金山,成多智.旋喷桩在偏压隧道围岩加固中的数值分析及应用[J].铁道科学与工程学报,2011,8(1):73-76. |
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| 作者姓名： | 杨秀竹 黄建陵 赵建群 雷金山 成多智 |
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| 作者单位： | 1. 中南大学土木建筑学院,湖南,长沙,410075
2. 中铁五局湘桂铁路一标指挥部,湖南,东安,425900 |
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| 基金项目： | 湖南省自然科学基金资助项目(07JJ3104); 南宁铁路局湘桂铁路科技攻关项目(NXG1003) |
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| 摘 要： | 针对某浅埋偏压隧道采用地表旋喷桩加固措施的实际情况,对三台阶法开挖隧道时围岩的位移和应变响应进行了数值分析,并与未采用地表加固情况进行了比较.计算结果表明:采用三台阶法开挖隧道,上台阶开挖引起较大的竖向位移和应变,而中台阶和下台阶开挖产生很小的竖向位移和应变,这主要是因为上台阶位于土层中,中台阶有一部分位于岩层中,下台...
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| 关 键 词： | 偏压隧道 膨胀土 旋喷枪 竖向位移 剪应变 |
Numerical simulation and application of jet grouting pile to surrounding rock consolidation of unsymmetrial loading tunnel |
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| YANG Xiu-zhu
,
HUANG Jian-lin
,
ZHAO Jian-qun
,
LEI Jin-shan
,
CHENG Duo-zhi.Numerical simulation and application of jet grouting pile to surrounding rock consolidation of unsymmetrial loading tunnel[J].Journal of Railway Science and Engineering,2011,8(1):73-76. |
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| Authors: | YANG Xiu-zhu HUANG Jian-lin ZHAO Jian-qun LEI Jin-shan CHENG Duo-zhi |
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| Affiliation: | YANG Xiu-zhu1,HUANG Jian-lin1,ZHAO Jian-qun2,LEI Jin-shan1,CHENG Duo-zhi2(1.College of Civil and Architectural Engineering,Central South University,Changsha 410075,China,2.Headquarters of One Branch of China Railway Wuju Corporation,Dongan 425900,China) |
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| Abstract: | Jet grouting piles method was used to reinforce overlying soil of shallow buried tunnel under unsymmetrical pressure.Numerical simulation was chosen to analyze displacement and strain response during tunnelling with three steps excavation method under condition of reinforcement and unreinforcement.The results show that larger vertical displacement and shear strain occurs during excavation of upper bench,and it changes very little when center and subjacent bench were excavated.This is because upper bench is ... |
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| Keywords: | unsymmetrial loading tunnel expansive soil jet grouting pile vertical displacement shear strain |
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