Optimum design of raft foundation

Raft foundation which have comprehensive,high-capacity,flexible arrangements such as the structure of the advantages are widely used as a foundation of high-rise buildings and super tall buildings.Based on actual projects to deal with,mainly for the following analysis:(1)raft foundation in the column under the anti-punching and in the following core tube shear,the issue of anti-punching;(2) whether or not to consider the impact of groundwater buoyancy when checking raft foundation in-bearing capacity of the basement;(3) to determination the raft depth of high-rise building which has the podium;(4)to simplify the calculation of differential settlement about raft foundation.Some come to the last raft of ways to optimize the design,structure design for reference.