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Abstract The settlement and stress ratio between pile and soil are the two most important parameters of composite foundation. But it is not easy to consider displacement coordination between piles and ground. Aiming at this problem，the equation of interaction is simplified. And three different static loading tests and in-situ measurement are carried out to analyze the load-bearing behavior and working mechanism of various types of rigid pile composite foundations in Guangdong Province. The settlement and rule of stress ratio between pile and ground are obtained. The measurement results show that proposed method coincides well with the practice condition. This method has better practical result than that of the method presented in technical code. And the results presented could be used for reference in rigid pile composite foundation design.
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Received: 30 June 2009
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