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Study on Deformation and Reaction Pressure of Large-podiums Frame Structure with Thick Raft Foundation Under Tall Building

Di Daohuai(China Academy of Building Research,Beijing 100013,China)  
Based on simplified method, the interaction model among tall building,foundation and soil is set up.The deformation and reaction pressure of large-area frame structure with thick raft foundation are discussed.It can be concluded that the deformation,reaction pressure can spread to the 3 time spans outside the main building if the podium is more than 3 storeys;if the podium is 2 storeys,the thickness of the top floor plate should be more than 300mm.
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