The Computation and Design Research of the Column-raft Foundation

Based on the mechanical analysis of the single foundation under column,raft foundation,the finite element analysis of column raft foundation,and the result of model experiment,according to the strength transferring process of column raft foundation and the characteristics of the strength of the extened part of the column,this paper presents a practical computation method.Also,this paper classifies the applicable range of the single foundation under column,the column raft foundation,the raft foundation,pile foundation according to the utilization coefficient of the carrying capacity of groundstill.The economic analysis and the example of the completed building both indicate that the column raft foundation is reliable and economical.