本文在复合桩基理论基础上，进一步提出了塑性支承桩的概念，并进行了大量而细致的现场测试研究，证实了复合桩基理论和塑性支承桩概念的正确性和经济性。 Based on the theory of composite pile foundation, the concept of plastic support pile is further put forward and a large number of detailed and in-situ test studies are carried out to verify the correctness and economy of the concept of composite pile foundation and the concept of plastic support pile.