Impact Analysis and Control Strategies of Overlying Loading/Unloading Effects on Soft Soil Shield Tunnels

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 control measures for external constructions were put forward to help ensure the structural safety of the tunnels. Besides, several cases concerning the loading or unloading on metro tunnels were studied to help verify the results. From this book, the readers could learn a new approach for the structural analysis of the tunnels, and strengthen the risk awareness of the existed tunnels or similar structures.

Rulu Wang, now as the deputy chief engineer of Shanghai Shentong Metro Group Co., Ltd, has been working on the research and application of the structural protections of Shanghai metro over 20 years since graduated with a post-doctor degree from Tongji University. Wang has successively won the Shanghai Leading Talent, the first Liu Jianhang Academician Foundation Award and other honors. Over 30 research projects about metros were undertook or participated by him over the past years. He has won 4 prizes of Shanghai Municipal Science and Technology Progress Award (including first, second, and third award), 3 awards of Shanghai Municipal Excellent Invention Competition, 2 second prizes of the Ministry of Land and Resources Science and Technology Progress Award, 1 third prize of the Ministry of Construction. He also owns 3 published works, 2 utility model patents, 3 invention patents, and more than 40 academic papers.

Fayun Liang  is a Professor at Tongji University, mainly works on the research of the foundation engineering in soft soils, urban underground engineering, and marine deep-water foundations. He has presided over 6 projects of National Natural Science Foundation of China, more than 10 research projects funded by provincial or ministerial agencies, and published more than 200 academic papers. He also won two first-class prize and six second-class prizes of the provincial and ministerial science and technology progress awards, and Mao Yisheng’s Young Award for Soil Mechanics and Geotechnical Engineering. He has edited and published several books, such as “Scouring Mechanism and Bearing Performance Evolution of Pile Group Foundation of Deep Water Bridge,” “Analysis and Design of High-rise Building Foundation.”

Jiaping Li, now as the deputy general manager and chief engineer of Shanghai Metro Monitoring and Inspection Management Co., Ltd, has been working on the maintenance of civil structures of rail transit and management of protection areas of metro for decades. He has participated in more than 10 scientific research projects of the Ministry of Science and Technology and Shanghai, and the edition of 8 professional technical standards. He has obtained 6 authorized patents, published more than 20 academic papers, and won 2 first prizes, 3 second prizes and 1 third prize of the Shanghai Science and Technology Progress Award.

Zhao Yuan, now as the deputy director of the GIS Application Research Center of SGIDI Engineering Consulting (Group) Co., Ltd, has been working in urban rail transit precision engineering survey, structural safety monitoring and evaluation research for decades. He has mastered more than 100 rail transit survey, monitoring and evaluation consulting projects, and nearly 10 municipal key scientific research projects. He has won more than 20 national, industrial and Shanghai excellent engineering awards, including 2 Shanghai Surveying and Mapping Science and Technology Progress Awards, and 14 first and second prizes of National and Shanghai Excellent Engineering Design Awards. He also participated in the compilation of 6 specifications and obtained 16 patents.