Influencing factors for bearing capacity of statically pressed pipe piles based on grey theory

The ultimate bearing capacity of statically pressed pipe piles is affected by the geometry of piles, property of soil surrounding the piles, pile construction and so on. The grey correlation method is used to analyze the investigation data, construction records and field loading test data of statically pressed pipe piles in Liaoshen area, and the factor sorting which affects the bearing capacity of single pile is acquired. The results show that the ultimate bearing capacity of single pile is end resistance, which is different from that in south area of China. It is advisable to analyze the factors which affect the bearing capacity of statically pressed pipe piles by use of the grey correlation method. The results agree well with the real situation of load distribution. The grey correlation method provides a new research approach for analyzing the bearing mechanism of statically pressed pipe piles and gives some references for researches on relative problems in future.