With more and more leap of human impacts and engineeringconstruction in Permafrost of Qingh ai-Tibetan plateau.Pilefoundation Plaved a very important part as foundation form inarchite CtUral engineering. The Stability of the pile found ationeffected the building superincumbent The effects of specia1natural geography condition and different peprmafrostengineering condition.made the long-term strength of pilefoundation become the function of temperature.i C e-content.loadand time.It would change because of th...