Approach for studying foundation subjected to vibration: From theoretical studies in near field to modeling in far field, from lab model to In-Situ test

Abstract

This article suggests approaches for studying soil foundation subjected to dynamic effects: a) Theoretical studies in near field about mobilized soil bearing capacity of foundation and its response when receiving the vibration propagating through soil medium from a source in far field; b) Experimental studies for studying the mobilized coefficient of internal friction of soil with a self made apparatus ‘Modified shearbox’ and a small scale model for studying the additional settlement due to vibration; c) Site plate bearing test with open standpipes installed around it for investigating the increase of pore water pressure when subjected to dynamic effects and the mechanism for developing the additional settlement under vibration. Some results obtained are: A formula for the bearing capacity of soil foundation subjected to dynamic effects; a system of governing differential equations for vibration of source - soil medium - receiver footing ; an apparatus for studying the mobilized shear strength due to vibration; and procedure for studying the additional settlement by using Matlab programming, small scale model and site test.