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A platform for research: civil engineering, architecture and urbanism
Deep Excavations with Special Ground Shape
The extension of our infrastructure in urban areas and also in rural embossed areas is often linked with the design and construction of complex geotechnical structures. Especially the design of the temporarily required excavation structures with the plurality of construction phases and the varying deformation states and stress situations has to be mentioned. In the most cases, examination of the bearing and deformation behavior in plain strain models is preferred to the detailed three-dimensional investigation of the soil-structure interaction. In reality, deep excavations are spatial systems significantly influenced by the geometric and geotechnical boundary conditions [Chiou et. al. (1993)]. The three-dimensional soil-structure interaction and the influence on the bearing and deformation behavior of nearly rectangular excavations in cohesive soils are investigated by the analysis of several field measurements and the execution of a parametric study. The stiffening effect of the corners and its influence on the bearing behavior of the structure is apparent and leads to a more realistic and more economic design. The realistic approach of the acting earth pressure is contrary to the approach formulated in the technical guidelines, e.g. EAB (2012). Further investigations of the bearing and deformation behavior of deep excavations with special ground shape under consideration of the geotechnical and the structural boundary conditions shall lead to more realistic design approaches.
Deep Excavations with Special Ground Shape
The extension of our infrastructure in urban areas and also in rural embossed areas is often linked with the design and construction of complex geotechnical structures. Especially the design of the temporarily required excavation structures with the plurality of construction phases and the varying deformation states and stress situations has to be mentioned. In the most cases, examination of the bearing and deformation behavior in plain strain models is preferred to the detailed three-dimensional investigation of the soil-structure interaction. In reality, deep excavations are spatial systems significantly influenced by the geometric and geotechnical boundary conditions [Chiou et. al. (1993)]. The three-dimensional soil-structure interaction and the influence on the bearing and deformation behavior of nearly rectangular excavations in cohesive soils are investigated by the analysis of several field measurements and the execution of a parametric study. The stiffening effect of the corners and its influence on the bearing behavior of the structure is apparent and leads to a more realistic and more economic design. The realistic approach of the acting earth pressure is contrary to the approach formulated in the technical guidelines, e.g. EAB (2012). Further investigations of the bearing and deformation behavior of deep excavations with special ground shape under consideration of the geotechnical and the structural boundary conditions shall lead to more realistic design approaches.
Deep Excavations with Special Ground Shape
Moormann, Christian (author) / Klein, Linus (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 1372-1381
2013-06-18
Conference paper
Electronic Resource
English
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