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A platform for research: civil engineering, architecture and urbanism
A large-scale excavation in soft Holocene deposit and its elasto-viscoplastic analysis
Abstract In the present study, the large-scale excavation in the construction is numerically back-analyzed using a soil–water-coupled finite element method with an elasto-viscoplastic model which considers the strain-induced degradation. The measurements of the deformation have been performed during the construction of a new railway station in Osaka, Japan, in which a large and deep excavation has been successfully carried out using a special deep mixing type of soil improvement method with earth retaining walls through the thick Holocene Osaka Umeda clay deposit. A comparison between the numerical results and the measurements of the excavation at Osaka shows that the simulation method can reproduce the overall deformation of the soft ground and the earth retaining walls including the time-dependent behaviour during the excavation and a deep mixing soil improvement method as an additional technique for stability are effective.
A large-scale excavation in soft Holocene deposit and its elasto-viscoplastic analysis
Abstract In the present study, the large-scale excavation in the construction is numerically back-analyzed using a soil–water-coupled finite element method with an elasto-viscoplastic model which considers the strain-induced degradation. The measurements of the deformation have been performed during the construction of a new railway station in Osaka, Japan, in which a large and deep excavation has been successfully carried out using a special deep mixing type of soil improvement method with earth retaining walls through the thick Holocene Osaka Umeda clay deposit. A comparison between the numerical results and the measurements of the excavation at Osaka shows that the simulation method can reproduce the overall deformation of the soft ground and the earth retaining walls including the time-dependent behaviour during the excavation and a deep mixing soil improvement method as an additional technique for stability are effective.
A large-scale excavation in soft Holocene deposit and its elasto-viscoplastic analysis
Oka, Fusao (author) / Takada, Naoki (author) / Shimono, Kazuyuki (author) / Higo, Yosuke (author) / Kimoto, Sayuri (author)
Acta Geotechnica ; 11 ; 625-642
2016-03-02
18 pages
Article (Journal)
Electronic Resource
English
Earth retaining wall , Elasto-viscoplastic model , Excavation , Soft Holocene clay , Soil–water-coupled finite element analysis Engineering , Geoengineering, Foundations, Hydraulics , Continuum Mechanics and Mechanics of Materials , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics , Structural Mechanics
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