- Singapore Case Histories on Performance of Piles Subjected to Tunnelling-Induced Soil Movement
- W M Cham
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2016 , Volume: 3
- Pile Foundations ; Tunneling in Soils ; Instrumentation
- Keywords: Tunnelling ; Piles
- Abstract
In land scarce Singapore, the development of a comprehensive and efficient underground public transport system is the key to a sustainable transport system. This has resulted in many tunnels being built in densely urbanized areas and at close proximity to buildings and infrastructures. The tunnelling effects on these adjacent structures can be detrimental as problems such as pile settlement and passive loading on the piles could arise. The construction of large scale infrastructure projects such as Circle Line has opened up enormous scope for tunnelling and underground works in Singapore, which offers a great opportunity to study the response of piles to tunnelling. Two case histories are presented and involved the monitoring of 200 buildings located within the influence of tunneling along Circle Line (CCL) 3, 4 and 5. More than 3600 building settlement markers were analyzed and the resulting pile head settlements due to tunnelling were compared with surrounding ground surface movements. The results of the full-scale instrumented piles subjected to the effects of twin tunnel construction on adjacent groups of bored cast in-situ piles are also discussed. PDF |
- Stacked Tunnelling Induced Surface Settlements in Soft Soil – A Case Study from Singapore
- GT Senthilnath ; D Velu
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2016 , Volume: 3
- Tunneling in Soils ; Settlements ; Risk & Reliability ; Numerical & Constitutive Modeling
- Keywords: Stacked tunnelling ; soft soil ; buildings ; TBM ; Monte-Carlo simulation
- Abstract
The growing demand for public and sustainable transportation in heavily urbanized areas like Singapore requires construction of an increasing number of Metro Lines. Complicated technical challenges are associated with such an activity and settlement prediction models play a key role in assessing the tunnelling-related risk assessments and planning mitigation techniques. Although a significant amount of research has been performed to study the settlements induced by side-by-side twin tunnels, the settlement prediction of stacked tunnelling has been, relatively, limited. In this paper, stacked tunnelling induced settlements are predicted using 2D numerical simulation. The extensive data from the instrumentation measurements collected during the construction of a stacked configuration tunnel in Singapore Downtown Line MRT tunnels have been used to study the validity of the principle of superposition for stacked tunnels. Key observations are presented by comparing empirical, numerical and actual field settlement data. Using the Monte-Carlo simulation technique, the empirical trough parameter is back-calculated to fit the actual settlements observed in Kallang formation. This could be used for future settlement predictions in similar ground conditions. PDF |
- Probabilistic back-analysis of K0 and deformation properties of fine soils found in Line 2 of Santiago Metro, Chile
- M. O. Cecílio ; P. I. B. Queiroz ; L. Valenzuela P.A. Negro
- IS SEOUL '14
- Year: 2014
- Tunneling in Soils
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- Shallow tunnel construction using a new tunneling technique: M-CAM
- J. H. Choi ; J. H. Lee ; J. S. Lim ; H. Cho
- IS SEOUL '14
- Year: 2014
- Tunneling in Soils
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- Advanced numerical modelling of multi-storey buildings response to tunnelling
- D. Boldini ; V. Fargnoli ; C. G. Gragnano ; A. Amorosi
- IS SEOUL '14
- Year: 2014
- Numerical & Constitutive Modeling ; Tunneling in Soils ; Settlements ; Finite Element / Finite Difference
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- Analysis of convergence data and 3D numerical modelling of tunnels excavated in fine-grained soils
- P. Perazzelli ; T. Rotonda ; D. Boldini ; A.M. Ajmone-Cat ; P.M. Geianvecchio
- IS ROME '11
- Year: 2011
- Numerical & Constitutive Modeling ; Tunneling ; Tunneling in Soils
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- Bearing capacity analysis of cohesive-frictional soils with dual circular tunnels
- K. Yamamoto ; A.V. Lyamin ; D.W. Wilson ; A.J. Abbo ; S.W. Sloan
- IS ROME '11
- Year: 2011
- Tunneling ; Tunneling in Soils ; Numerical & Constitutive Modeling
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- EPB tunnelling in deltaic deposits: Observations of ground movements
- A. Gens ; A. DiMariano ; M.T. Yubero
- IS ROME '11
- Year: 2011
- Tunneling in Soils
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- Design of a deep tunnel in a layer of a normally consolidated clay
- V. Jovičić ; J. Logar
- 17th International Conference on Soil Mechanics and Geotechnical Engineering (Alexandria)
- Year: 2009
- Tunneling in Soils ; Numerical & Constitutive Modeling
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- Excavation entirely on subway tunnels in the central area of the People’s Square
- H.C. Qiao ; Y.M. Zhu ; X.H. Jiang ; Y.B. Mei
- Geotechnical Aspects of Underground Construction in Soft Ground – Proceedings of the 6th International Symposium (IS-SHANGHAI 2008)
Shanghai - China
April 10-12, 2008
- Year: 2008
- Tunneling in Soils
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- Assessment of tunnel stability in layered ground
- R.N. Taylor ; G. Scarpelli ; A. Burghignoli ; P. Caporaletti
- Geotechnical Aspects of Underground Construction in Soft Ground – Proceedings of the 6th International Symposium (IS-SHANGHAI 2008)
Shanghai - China
April 10-12, 2008
- Year: 2008
- Tunneling in Soils
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- Stability analysis of large slurry shield-driven tunnel in soft clay
- R. Kastner ; F. Emeriault ; Z.X. Zhang ; Y. Li
- Geotechnical Aspects of Underground Construction in Soft Ground – Proceedings of the 6th International Symposium (IS-SHANGHAI 2008)
Shanghai - China
April 10-12, 2008
- Year: 2008
- Tunneling ; Tunneling in Soils ; Numerical & Constitutive Modeling
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- Deformation and pore pressure model of the saturated silty clay around a subway tunnel
- X. Zhang ; Y.Q. Tang ; Z.D. Cui
- Geotechnical Aspects of Underground Construction in Soft Ground – Proceedings of the 6th International Symposium (IS-SHANGHAI 2008)
Shanghai - China
April 10-12, 2008
- Year: 2008
- Tunneling in Soils ; Laboratory Testing ; Soil Dynamics
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- Urban tunnels in soil: Review of current design practice in Brazil
- A. Negro ;
- Geotechnical Aspects of Underground Construction in Soft Ground – Proceedings of the 6th International Symposium (IS-SHANGHAI 2008)
Shanghai - China
April 10-12, 2008
- Year: 2008
- Tunneling in Soils
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- Unsaturated hydraulic properties for compressed air tunnelling by inverse modeling
- A. Chinkulkijniwat ; S. Semprich ; G. Steger
- 16th International Conference on Soil Mechanics and Geotechnical Engineering (Osaka)
- Year: 2005
- Tunneling in Soils
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