Buckling analysis for super-long pile considering self-weight of pile and lateral frictional resistance
1.Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang， Jiangsu 212013, China; 2.Engineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China
Abstract：Considering the effects of lateral resistance of soil, frictional resistance between pile and soil and self-weight of pile, and choosing proper deflection function of pile and elastic resistance model of lateral soil, the analytical solutions of buckling load and the calculation length of super-long pile were obtained by the method of Rayleigh-Ritz and the theory of minimum potential energy. The effects of lateral resistance of soil, frictional resistance between pile and soil and self-weight of pile on buckling load and calculation length of super-long pile were also analyzed. The results show that the buckling load of super-long pile is mainly influenced by lateral resistance of soil, while the frictional resistance between pile and soil has slight effect on buckling load of super-long pile. When the ratio of depth to length of pile is small, the influence of pile self-weight on buckling load should be considered. The influence of self-weight of pile is gradually decreased with the increasing of the ratio.
2016, Vol. 37 
