| Raft foundation is one of the main form of foundation for high-rise building, because it can offer great underground space. When considering the interaction between foundation, superstructure and soil, it is difficult to analyze internal force in foundation. Its structure analyse face great challenge and research on this subject becomes the most important subject.According to the characteristic of the raft foundation for high-rise building, we design the testing program and obtain the internal force with low cost. The testing result shows the contribution of the superstructure to the interaction, the pressure between soil and foundation, the distribution of the internal force of raft foundation.ANSYS is a kind of tool software of finite element in common use, offer the powerful analysis computational tool to structure engineer. With its intuitionistic interface and strong secondary development function, it has used in the actual projects gradually. Because of its generality, it requires user having correct finite element theory and abundant professional knowledge, then the using among the ordinary project designers is limited. This thesis does secondary development to realize raft foundation analysis with intuitionistic model, simply calculation and convenient use.This thesis describes three part of modeling top superstructure, foundation and soil. It edits a procedure to set up space frame and its raft foundation, which only need change 8 parameters. The way to set up model and separate it as net considers four factors, complexity of modeling, load of accounting, assurance of precision and convenience of looking over result. It meets the characteristic of the raft foundation for high-rise building.Compared with routine method, the way to realize the interaction in this thesis is suitable for different kinds of project. It can be successfully used to simulate the construction process, and fit the characteristic of irregular thick raft foundation. |
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