Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Examination and Implications of Preconsolidation Pressure Changes in Overconsolidated Clay Underlying a Large Embankment
Under the center of a wide embankment, the ratio and orientation of principal stresses are relatively constant as the embankment grows, while under the side slopes where loading is non-uniform, horizontal stresses increase. This study examines variations in vertical preconsolidation pressure (Pc,v) in overconsolidated clay under a large embankment 20 years after its construction. Although stresses in the clay from loading were less than Pc,v in the undisturbed formation, clay under side slopes showed an increase in Pc,v up to 162% greater than the applied vertical loading. These variations were positively related to the angle of Principal Stress Rotation (PSR) and the ratio of vertical to horizontal normal stress. This implies that by taking advantage of PSR, Pc,v of a soil could be increased to a greater degree; or, with less effort, using non-uniform preloading than by spatially monotonic loading.
Examination and Implications of Preconsolidation Pressure Changes in Overconsolidated Clay Underlying a Large Embankment
Under the center of a wide embankment, the ratio and orientation of principal stresses are relatively constant as the embankment grows, while under the side slopes where loading is non-uniform, horizontal stresses increase. This study examines variations in vertical preconsolidation pressure (Pc,v) in overconsolidated clay under a large embankment 20 years after its construction. Although stresses in the clay from loading were less than Pc,v in the undisturbed formation, clay under side slopes showed an increase in Pc,v up to 162% greater than the applied vertical loading. These variations were positively related to the angle of Principal Stress Rotation (PSR) and the ratio of vertical to horizontal normal stress. This implies that by taking advantage of PSR, Pc,v of a soil could be increased to a greater degree; or, with less effort, using non-uniform preloading than by spatially monotonic loading.
Examination and Implications of Preconsolidation Pressure Changes in Overconsolidated Clay Underlying a Large Embankment
Burlingame, M. J. (Autor:in)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 381-389
18.06.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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