基于流固耦合模型的隧道施工数值分析
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摘要
地铁隧道施工将不可避免地扰动岩土体,破坏原有地下水渗流场与应力场的平衡状态,从而引起地表沉降和变形,影响地面建筑物的安全和地下管线的正常使用,这些问题都涉及地下水的问题.从地下水与岩土体耦合共同作用角度来分析和研究隧道施工引起的地面沉降问题,运用FLAC3D有限差分程序进行数值模拟,并把数值模拟的结果与工程实测曲线进行比较.
When tunneling,the disturbance induced by construction necessarily inevitably destroys the intrinsic stress and seepage balance of geotechnical material followed by,causing ground surface movement and deformation which affects safety of the ground construction and the normal operation of underground pipeline directly.This paper analyses and studies surface settlement from the angle perspective of fluid-solid coupling theory,addresses applies numerical simulation with FLAC3D,and compares the result of numerical simulation with the measured curves.
When tunneling,the disturbance induced by construction necessarily inevitably destroys the intrinsic stress and seepage balance of geotechnical material followed by,causing ground surface movement and deformation which affects safety of the ground construction and the normal operation of underground pipeline directly.This paper analyses and studies surface settlement from the angle perspective of fluid-solid coupling theory,addresses applies numerical simulation with FLAC3D,and compares the result of numerical simulation with the measured curves.
引文
[1]张在明.地下水与建筑基础工程[M].北京:中国建筑工业出版社,2001,8:20-221.
[2]李廷春,李术才,陈卫忠,等.厦门海底隧道的流固耦合分析[J].岩土工程学报,2004,26(3):397-401.LI Ting-chun,LI Shu-cai,CHEN Wei-zhong,et al.Coupled fluid-mechanical analysis of Xiamen subsea tunnel[J].ChineseJournal of Geotechnical Engineering,2004,26(3):397-401.(in Chinese)
[3]陈健云,刘金云.地震作用下输水隧道的流-固耦合分析[J].岩土力学,2006,27(7):1077-1081.CHEN Jian-yun,LIU Jin-yun.Fluid-structure coupling analysis of water-conveyancetunnel subjected to seismic excitation[J].Rock and Soil Mechanics,2006,27(7):1077-1081.(in Chinese)
[4]侯伟.公路隧道的渗流场与应力场的耦合分析[D].西安:西安理工大学水利水电学院,2006.Hou Wei.Analysis of coupled seepage fields and stress fields in highway tunnel[D].Xi'an:The Faculty of Water Resourceand Hydraulic Power of Xi'an University of Technology,2006.(in Chinese)
[5]秦建设,朱伟.土压式盾构施工中地下水出渗机理研究[J].岩土力学,2004,25(10):1632-1636.QIN Jian-she,ZHU Wei.Study on flowing through screw conveyor during excavation with EPB shield[J].Rock and SoilMechanics,2004,25(10):1632-1636.(in Chinese)
[6]MAIR R J,TAYLOR R N,BRACEGIRDLE A.Subsurface settlement profiles above tunnels in clay[J].Geotechnique,1993(2):315-320.
[7]DAVIES E H,GUNN M J,MAIR R J,et al.The stability of shallow tunnels and underground openings in coesive material[J].Geotechnique,1980(4):397-416.
[8]弗雷德隆德D G,拉哈尔佐H.非饱和土力学[M].陈仲颐,等,译.北京:中国建筑工业出版社,1997:206-389.
[2]李廷春,李术才,陈卫忠,等.厦门海底隧道的流固耦合分析[J].岩土工程学报,2004,26(3):397-401.LI Ting-chun,LI Shu-cai,CHEN Wei-zhong,et al.Coupled fluid-mechanical analysis of Xiamen subsea tunnel[J].ChineseJournal of Geotechnical Engineering,2004,26(3):397-401.(in Chinese)
[3]陈健云,刘金云.地震作用下输水隧道的流-固耦合分析[J].岩土力学,2006,27(7):1077-1081.CHEN Jian-yun,LIU Jin-yun.Fluid-structure coupling analysis of water-conveyancetunnel subjected to seismic excitation[J].Rock and Soil Mechanics,2006,27(7):1077-1081.(in Chinese)
[4]侯伟.公路隧道的渗流场与应力场的耦合分析[D].西安:西安理工大学水利水电学院,2006.Hou Wei.Analysis of coupled seepage fields and stress fields in highway tunnel[D].Xi'an:The Faculty of Water Resourceand Hydraulic Power of Xi'an University of Technology,2006.(in Chinese)
[5]秦建设,朱伟.土压式盾构施工中地下水出渗机理研究[J].岩土力学,2004,25(10):1632-1636.QIN Jian-she,ZHU Wei.Study on flowing through screw conveyor during excavation with EPB shield[J].Rock and SoilMechanics,2004,25(10):1632-1636.(in Chinese)
[6]MAIR R J,TAYLOR R N,BRACEGIRDLE A.Subsurface settlement profiles above tunnels in clay[J].Geotechnique,1993(2):315-320.
[7]DAVIES E H,GUNN M J,MAIR R J,et al.The stability of shallow tunnels and underground openings in coesive material[J].Geotechnique,1980(4):397-416.
[8]弗雷德隆德D G,拉哈尔佐H.非饱和土力学[M].陈仲颐,等,译.北京:中国建筑工业出版社,1997:206-389.
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