STUDY ON BEARING CAPACITY AND SETTLEMENT OF SHALLOW FOUNDATION WITH VOID

Several factors,such as the void location and the void shape,affect the bearing capacity behavior of shallow foundation.The cavity effect on the bearing capacity of strip foundation above a void is investigated analytically by using the elastoplastic 2D FEM.The relation between load and settlement of shallow foundation is analyzed for different conditions of the void;and the failure mechanism of ground is also examined.The analytical results indicate that there is a critical effect region for the void under the shallow foundation.Only when the void is located within this region,the bearing capacity and settlement of strip foundation vary considerably with the void location.In addition,based on the above finite element results,a simple calculation method is proposed for the cavity effect on the bearing capacity of strip foundation.