铁道科学与工程学报2011，Vol.8Issue(1)：73-76,4.
旋喷桩在偏压隧道围岩加固中的数值分析及应用
Numerical simulation and application of jet grouting pile to surrounding rock consolidation of unsymmetrial loading tunnel
摘要
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 unreinforeement . 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 located in soil , part of center bench in rock , and the whole subjacent bench in rock. Largest shear strain occurs at the arch foot of upper bench. It is concluded that jet grouting piles method can control surrounding rock deformation effectively.关键词
偏压隧道/膨胀土/旋喷枪/竖向位移/剪应变分类
交通工程引用本文复制引用
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):73-76,4.基金项目
湖南省自然科学基金资助项目(07JJ3104) （07JJ3104）
南宁铁路局湘桂铁路科技攻关项目(NXG1003) （NXG1003）
