Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Impacts of the plane strain ratio on excavations in soft alluvium deposits
Due to tool, time and budget limitations, 2-dimensional analyses of deep excavation are often adopted for engineering practice; thus, the 3-dimensional behaviour is ignored. Because conducting 3-dimensional analyses is very time-consuming and costly, the “plane strain ratio (PSR)” indicator is defined to assist in understanding the 3-dimensional behaviour of deep excavations via the results of 2-dimensional analyses. However, previous works of the impacts on PSR have focused on only the excavation geometry and distance from the excavation corner. In this paper, additional factors that may affect the PSR for excavations in both drained and undrained materials are examined, and it is concluded that not only excavation geometry and distance to the corner but also the ratio of the wall embedded depth to the excavation depth and the wall thickness have comparatively significant influences compared to other factors, whether excavating drained or undrained materials. Lastly, multiple regression is used to modify the value of the PSR from empirical PSR charts for sand and clay considering the impacts of these abovementioned factors.
Impacts of the plane strain ratio on excavations in soft alluvium deposits
Due to tool, time and budget limitations, 2-dimensional analyses of deep excavation are often adopted for engineering practice; thus, the 3-dimensional behaviour is ignored. Because conducting 3-dimensional analyses is very time-consuming and costly, the “plane strain ratio (PSR)” indicator is defined to assist in understanding the 3-dimensional behaviour of deep excavations via the results of 2-dimensional analyses. However, previous works of the impacts on PSR have focused on only the excavation geometry and distance from the excavation corner. In this paper, additional factors that may affect the PSR for excavations in both drained and undrained materials are examined, and it is concluded that not only excavation geometry and distance to the corner but also the ratio of the wall embedded depth to the excavation depth and the wall thickness have comparatively significant influences compared to other factors, whether excavating drained or undrained materials. Lastly, multiple regression is used to modify the value of the PSR from empirical PSR charts for sand and clay considering the impacts of these abovementioned factors.
Impacts of the plane strain ratio on excavations in soft alluvium deposits
Acta Geotech.
Hsiung, Bin-Chen Benson (Autor:in) / Likitlersuang, Suched (Autor:in) / Phan, Khac Hai (Autor:in) / Pisitsopon, Piroon (Autor:in)
Acta Geotechnica ; 16 ; 1923-1938
01.06.2021
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Distance from the corner , Excavation geometry , Plane strain ratio , Ratio of the wall embedded depth to the excavation depth , Wall thickness Engineering , Geoengineering, Foundations, Hydraulics , Solid Mechanics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics
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