Numerical Analysis for Foundation Settlement Caused by Shield Tunnels Construction
Based on the shield tunnel construction of an urban subway,the foundation settlement caused by shield construction is studied and analyzed by using three-dimensional numerical simulation and field measured data.Accord-ing to the relative position between the shield tunnel axis and the building foundation,the analysis of the average set-tlement and differential settlement of the building foundation caused by different tunnel underpass modes is carried out.The measured and calculated results show that when the shield tunnel underpass the building foundation on the edge,the average settlement of the foundation is close to that under the straight-through condition,but the differential settle-ment and inclination of the foundation are larger.In this case,the settlement difference per meter of the foundation with side underpass condition is about three times that with straight-through.The distribution of measured settlement data is consistent with the calculation results.The research methods and conclusions can be used as a reference for set-tlement control in similar tunnel projects.
NETL
NSTL
万方数据
维普
