FINITE ELEMENT ANALYSIS OF RAFT FOUNDATIONS FOR MULTISTORY AND HIGHRISE BUILDINGS

Much attention has been paid to the interaction of the soil-foundation-superstructure in the systems of multistory and highrise buildings.As a result,many models and calculating methods are put forward to deal with all kinds of problems,due to the complexity of the subject and limitation of calculating conditions.In the paper,with the help of the real project,The advantages and disadvantages of various models can be got according to comparison of the calculating results of various finite element model found with SAP2000;It can be obtained the basis of optimization design of raft fountdation,through comparison fo the influence of different foundation thickness and soil stiffness on raft foundation.