This book mainly focuses on two topics:• The early warning system of the metro structural safety, which includes the monitoring system and inspection system;• The treatment technology for the tunnel disease.In the discussion of the early warning system, several advanced sensing technologies were introduced, which could easily and rapidly detect the potential diseases of the tunnel lining structure. Meanwhile, in the discussion of the treatment technology for the str...

This book focuses on the influences on the shield tunnels (mainly metro tunnels) in typical soft soils in Shanghai Area caused by loading or unloading on the ground. Theoretical analysis, model test, and numerical analysis were adopted for figuring out the influence results. Based on the analysis results and the engineering experiences from the constructions and operations of metro tunnels in Shanghai Area in the past twenty years, the deformation law of tunnel was summarized and several c...

This book focuses on the study of deformation, particularly transverse deformation of the shield tunnel. The book begins with a theoretical analysis based on structural mechanics is introduced, followed by a full-scale model test conducted to monitor the deformation of the structure under gradually increasing loads.Most of the structure types existing in the Shanghai Metro system are researched in the tests, and the deformation mechanisms for different structures were separately su...