Title: EVALUATION OF BEARING CAPACITY OF FOUNDATION TREATED WITH DYNAMIC COMPACTION METHOD
Abstract: The bearing capacity of foundation treated with dynamic compaction—ground improvement method,is evaluated.Evaluation of bearing capacity of foundation with dynamic compaction method can provide references to the preliminary design of ground improvement.The in-situ loading tests for dynamic compaction projects to determine all types of foundation′s bearing capacity are performed because,sometimes,the theoretical calculation is not always reliable.Through the empirical-statistical regression analysis of some practical data for the bearing capacity of foundation treated with dynamic compactioni,t is found that the allowable bearing capacity of foundation is a function of energy of single drop and the number of total drops.When the foundation of noncohesive soil is treated,the equivalent quasi-static force between the tamper,ground and the depth of compaction-pit according to the quasi-static method is studied,while the contact force on the surface between the tamper and ground is represented by an equivalent static force.Then the volumetric strain,the relative density of soil beneath the surface and the theoretical values representing the results of standard penetration test using empirical relationship between relative density and standard penetration,which are achieved by predecessors,are determined.Last,the standard values of bearing capacity of foundation is determined according to Design Code for Building Foundation(GB5007–2002),in which the relationship between standard values of bearing capacity of foundation and standard penetration is given.The proposed method can provide references to the primary design and selection of schemes.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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