Research on analysis and design method of the pile-raft foundation with post-cast concrete strip

In order to analysis post-cast concrete strip influence to the pile-raft foundation, it has been taken to developed C++ program that is Poulos displacement solution calculating pile-soil stiffness and thick plank theory analyzing raft stiffness. Taking a frame and shear wall structure for example, it has been calculated to pile-raft foundation whether setting up post-cast strip or not that is foundation settlement, moment and so on. Results indicate that post-cast concrete strip is minutely influence to the pile foundation displacement and moment and not the control factor to this kind of pile foundation's design. It gives some good references to similar structure analysis and can instruct this kind of pile-raft foundation design and construction.