Geotechnical Aspects of Underground Construction in Soft Ground Proceedings of the 9th International Symposium on Geotechnical Aspects of Underground Construction in Soft Grounds (IS-São Paulo 2017), April 4-6, 2017, São Paulo, Brazil

Geotechnical Aspects of Underground Construction in Soft Ground comprises the second Fujita lecture, three keynote lectures and the regular papers presented at the Ninth International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground (IS - Sao Paulo 2017, Sao Paulo, Brazil, 4-6 April 2017). The Symposium was organized by the Brazilian Tunnelling Committee (CBT) of the Brazilian Geotechnical Society (ABMS), under the auspices of the Technical Committee TC204 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). The contributions cover a wide range of topics:- Deep Excavations- Interaction with Adjacent Structures- Mechanized Excavations- Sequential Excavations- Physical Modelling and Field Tests- Case Histories Geotechnical Aspects of Underground Construction in Soft Ground is particularly aimed at academics and professionals interested or involved in geotechnical and underground engineering. Similarly to previous editions, the contributions are a valuable source of reference on the current practice on the analysis, design and construction of tunnels, deep excavations and large underground structures, with particular emphasis on the development, effects and control of ground movements, their interaction with existing structures, mitigation measures and risk management. IS - Sao Paulo 2017 is the latest in a series of ISSMGE’s TC204 symposia, which began in New Delhi (1993), followed by symposia in London (1996), Tokyo (1999), Toulouse (2002), Amsterdam (2005), Shanghai (2008), Rome (2011) and Seoul (2014).

Keiichi Fujita lecture Amazing underground construction technology in Japan H. Akagi Keynote lectures Case studies and monitoring of deep excavations M. Korff EPB granular soil conditioning under pressure M.A. Mooney, Y. Wu, D. Parikh & L. Mori Recent underground construction projects in Korea—from rock to soft ground C. Yoo Deep excavations Design and construction of the substructure of a commercial development in Bogotá city using a top-down sequence G. Clavellina-Miller, O. Martinez-Galvis, J. Paulin-Aguirre, T. Jeanmaire & J.-I. Lopez Deep excavations stabilization with ground improvement or cross walls: A comparison of both stabilization methods G.A. Pittaro Ground movement estimation for underground box structures: Movements at corners J. McCallum, G.R. Taylor, J. Birks & Y.S. Hsu Analytical calculation of lateral earth pressure in finite soils considering displacement of retaining wall X. Yang & G. Liu Interaction with adjacent structures Effects of deep soil mixing and jet grouting on adjacent retaining walls and ground Y.P. Dong & A.J. Whittle Parametric study of the impact of deep excavation on an existing metro station M. Mitew-Czajewska Pile tunnel interaction: An analytical framework T.G.S. Dias & A. Bezuijen Pile tunnel interaction during mechanized tunnelling T.G.S. Dias & A. Bezuijen Mechanized excavations Slurry infiltration ahead of slurry TBM’s in saturated sand: Laboratory tests and consequences for practice T. Xu, A. Bezuijen & T.G.S. Dias A simplified chamber pressure model for EPB TBM tunneling in granular soil H. Yu, M.A. Mooney & A. Bezuijen Excavation cycle dependent changes of hydraulic properties of granular soil at the tunnel face during slurry shield excavations Z. Zizka, B. Schoesser & M. Thewes Rheology of foam-conditioned sands: Transferring results from laboratory to real-world tunneling S. Freimann, M. Galli & M. Thewes Grout pressure distribution during TBM tunnelling T.G.S. Dias & A. Bezuijen Numerical investigation of hydromechanical interactions at the tail void of bored tunnels due to grouting A.A. Lavasan & T. Schanz Numerical study of segmental tunnel lining behavior during mechanized tunneling S. Fabozzi & E. Bilotta Operative techniques for Earth Pressure Balanced Shield in saturated soft soils C. Chanchaya Tropical residual soil data compilation as guidance for laboratory tests and EPB excavation process simulation D.G.G. de Oliveira, M. Diederichs, L.L. Rasmussen & M.O. Cecilio Jr. Sequential excavations A new method for the prediction of settlements due to urban tunneling in soft ground N. Gilleron, A. Saitta & E. Bourgeois Deformations caused by the excavation of twin tunnels A. Pedro, T. Cancela, J. Almeida e Sousa & J. Grazina K0 parameter influence in tunneling superficial settlements and in liner stresses V. Armigliato, A.C.G. da Silva & C.M.A. Prado Analytical and numerical models for evaluation of tunnel excavation stability in a multi layered soil profile with groundwater flow L.E. Sozio Investigation of influence zones induced by shallow tunnelling in soft soils M.N. Vu, W. Broere & J.W. Bosch Effect of construction sequence of three-arch tunnel on center structure—numerical investigation J.H. Choi, J.S. Song, Q. Abbas & C. Yoo Assessment of train-load-induced ground and tunnel settlement with the effect of leakage Z.K. Huang, D.M. Zhang, H.W. Huang, Y. Li & S.J. Feng Numerical analysis of large-sectional pipe arch aided tunneling from ground movement perspective X. Xie, Z.H. Li, D.M. Zhang & H.W. Huang Physical modelling and field tests Study on potential area of chloride ion attack in subway tunnel from view point of chloride ion penetration route in ground and concrete of tunnel lining S. Konishi, T. Kawabata & K. Kamei Predictions of changes in pore-water pressure around tunnels in clay S. Divall, R.N. Taylor, S.E. Stallebrass & R.J. Goodey The role of building dimensions and position on the response of buildings to tunnelling subsidence: Centrifuge modelling S. Ritter, G. Giardina, M.J. DeJong & R.J. Mair The role of building position on the response of buildings to tunnelling subsidence: Numerical modelling G. Giardina, S. Ritter, M.J. DeJong & R.J. Mair Centrifuge modelling of shaft excavations in clay N.E. Faustin, M.Z.E.B. Elshafie & R.J. Mair Field measurements of ground movements associated with circular shaft construction N.E. Faustin, R.J. Mair, M.Z.E.B. Elshafie, C.O. Menkiti & M. Black Effects of wall embedment on base heave failure arising from deep excavations in soft soils J.P. Panchal, S.E. Stallebrass & A.M. McNamara Collapse behaviour of large rectangular tunnel in cement-admixed soils M.F.B. Zulkefli, A. Tyagi & F.H. Lee Case histories Large-scale improvement of converting a Japan’s first subway station constructed by the shield tunneling method into that of an open-cut method: Kiba Station on the Tozai Line K. Hiromoto, H. Hashiguchi & Y. Arai Ground response to tunnel construction for Jakarta Mass Rapid Transit Project H. Hendarto & J.R. Standing Imposed longitudinal settlement on a cast-iron tunnel from the excavation of a new tunnel beneath M. Alhaddad, M. Wilcock, C.Y. Gue, M.Z.E.B. Elshafie, K. Soga, R.J. Mair, M. Devriendt & P. Wright PAT TBM improving—a case of study to Metro Sao Paulo D. Agnella, W.J. Giannotti, M.A. Rosatti Filho & T.O. Pires

Prof. Arsenio Negro is Geotechnical Engineer. He has worked at the Bureau de Projetos e Consultoria Ltd. and is currently director at Tüv-Süd. He plays an active role in ISSMGE and has chaired several tunnelling conferencesamong whichWTC 2014. Marlísio O. Cecílio Jr. is Civil Engineer. He graduated at the Federal University of Santa Catarina in 2005 in the field of immersed tunnels. He received his Master's degree in Geotechnics from the University of São Paulo (2009) and has since worked as a Geotechnical Engineer atBureau de Projetos e Consultoria Ltda.and Tüv-Süd. His main academic and professional focus is underground excavations.