- Estimation of the Hydroconsolidation Susceptibility of the Anthropogenic Fill of the Historical Center of Thessaloniki, Greece
- Nikolaos P. T. Chatzigogos ; Thomas K. Makedon ; George E. Tsindaris ; Stefanos C. Tsotsos ; Basile C. Christaras
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2017 , Volume: 4
- Soil Mechanics ; Settlements ; Laboratory Testing ; Site Characterization & In-situ Testing (General)
- Keywords: hydroconsolidation ; anthropogenic historical fill ; collapse settlement ; oedometer simulation ; Thessaloniki’s Metro
- Abstract
The collapse of the soil structure due to wetting is called hydroconsolidation and it occurs only once under constant loading, in cases of perturbation of the soils moisture content. It is encountered usually in non-sedimentary soils such as anthropogenic fills and residual materials. This paper presents an interpretation of hydroconsolidation settlements in a building of the historical centre of Thessaloniki followed after a rise of the water table. The interpretation is based on the results of laboratory evaluation of hydroconsolidation properties, in conjunction with in situ measurements of settlements. PDF |
- St. Isaac Cathedral (St. Petersburg, Russia): A Case History
- Anna Shidlovskaya ; Jean Louis Briaud ; Mehdi Mohammadrajabi
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2017 , Volume: 4
- Soil Mechanics ; Settlements ; Numerical & Constitutive Modeling
- Keywords: Monuments ; St. Isaac’s Cathedral ; Engineering properties of soil ; Foundation capacity ; settlement analysis ; Microbial activity ; numerical simulation
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- 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 |
- General Behavior of Braced Excavation in Bukit Timah Granite Residual Soils: a Case Study
- W Zhang ; ATC Goh
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2016 , Volume: 3
- Deep Excavations ; Earth Retaining Structures ; Settlements
- Keywords: Braced excavation ; Bukit Timah Granite residual soil ; Wall deflection ; Ground settlement ; strut force ; piezometric level
- Abstract
The excavation system performance and ground movement behavior for the cut-and-cover excavation for the Downtown Line 2 Cashew Station in Singapore is presented. The information presented includes ground settlement profiles, wall deflection profiles, strut loads, and ground water monitoring behavior. Construction activities and remedial measures that were undertaken are also presented. Comparisons of the measured wall deflections and the ground surface settlements are also performed against the empirical methods/charts from the literature. It is hoped that this case study will provide useful reference and insights for future projects involving excavation in the Bukit Timah Granite residual soils. PDF |
- Study on Settlement Characteristics of Fouled Ballast for an Effective Maintenance Method
- J.J. Kumara ; K. Hayano ; Y. Kikuchi
- ICGE Colombo 2015
- Year: 2015
- Settlements
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- Effect of Preloading on Secondary Consolidation of Peaty Clay
- M. Fernando ; S.A.S. Kulathilaka
- ICGE Colombo 2015
- Year: 2015
- Soil Mechanics ; Settlements ; Laboratory Testing
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- Settlement Behavior of Peat Under Embankment Loading - monitoring in Full-scale Test Embankment and its Prediction
- H. Hayashi ; T. Yamanashi
- ICGE Colombo 2015
- Year: 2015
- Settlements ; Road Embankments
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- Settlement analyses of underground circular tunneling in soft clay
- J. S. Shiau ; M. S. Sams ; J. Zhang ; R. J. Kemp
- IS SEOUL '14
- Year: 2014
- Settlements ; Tunneling ; Tunneling in Soils
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- Settlements of buildings and buried pipelines induced by adjacent deep excavation in Shanghai soft ground
- Y. P. Dong ; H. J. Burd ; G. T. Houlsby
- IS SEOUL '14
- Year: 2014
- Settlements ; Underground Structures ; Deep Excavations
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- Groundwater drawdown induced ground settlement during tunneling – sensitivity analysis on influencing factors
- C. Yoo ; E. M. Jung
- IS SEOUL '14
- Year: 2014
- Settlements ; Tunneling
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- Ground settlement trough due to DOT shield tunneling
- Y. S. Fang ; M. Y. Huang ; C. Liu ; C. C. Kao
- IS SEOUL '14
- Year: 2014
- Settlements ; Tunneling
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- Numerical investigation of the effect of cross walls in reducing ground settlement induced by deep excavation
- C. Y. Ou ; P. G. Hsieh ; S. C. Chien
- IS SEOUL '14
- Year: 2014
- Deep Excavations ; Settlements ; Numerical & Constitutive Modeling ; Earth Retaining Structures
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- 3-Dimensional numerical modeling of SPB shield TBM tunneling-induced ground settlement considering volume loss processes
- H. Park ; S. Chang ; S. Lee
- IS SEOUL '14
- Year: 2014
- Numerical & Constitutive Modeling ; Tunneling ; Settlements
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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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- Predicting long-term settlements of coastal defences for the safeguard of the Venetian Lagoon
- P. Simonini ; Martínez García ; L. Tonni
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Settlements ; Earth Retaining Structures
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