This paper presents both experimental and numerical investigations on the influence of soil dilatancy on the behaviour of a shallow anchor plate in sand. A series of scaled model tests are performed to obtain the soil displacement field around an uplifting anchor using an image processing technique. The failure plane is identified by locating the points with maximum shear strain values deduced from the displacement field. The finite element package, Plaxis, is used to perform numerical analyses. The results show that the numerical analyses can simulate the experimental results by varying the angle of dilatancy during shearing. Two distinctively different failure modes are observed in loose and dense sand conditions. A significant compaction is experienced in loose sand to form a bell shaped compaction zone above the anchor plate. In dense sand two shear bands extend outward to the ground surface forming an angle of approximately the dilatancy angle of soil with the vertical.
Experimental and Numerical Investigation of the Influence of Dilatancy on a Shallow Anchor Plate in Sand
Ninth Asia Pacific Transportation Development Conference ; 2012 ; Chongqing, China
Sustainable Transportation Systems ; 644-651
2012-06-28
Aufsatz (Konferenz)
Elektronische Ressource
Englisch