Three Dimensional Numerical Analysis of Ground Settlement Induced by Shield Tunneling
The fine numerical simulation is used to study the ground settlement of complex stratum owing to shield construction by ANSYS program.It is shown that the closer the distance between soil layer and the axis of tunnel is,the smaller the disturbance of construction is,the obvious the ground surface settlement is.The value of the maximum settlement at the center of the surface is 7.4mm.The maximum settlement of vault is 14ram.The ground subsidence in cross section distribution is shaped of normal distribution.The closer the distance between soil layer and ground surface is,the smaller the vertical displacement is,the bigger the width of settlement trough of soil layers is.The width of settlement trough is 25m.The volume loss rate of shield tunnel is about 0.32%.The width coefficient of ground settlement trough is 0.56,The tendency of ground settlement decrease to become gentle with the advance of shield construction.The ground settlement keeps constant after tunnel face advancing to 30m.
Shield tunnel ground surface settlement numerical analysis soil disturbance
WANG Zhong Chang
School of Civil and Safety Engineering,Dalian Jiaotong University,116028,China
国际会议
沈阳
英文
937-940
2012-09-07（万方平台首次上网日期，不代表论文的发表时间）