STABILITY ANALYSIS ON THIN-WALLDE PIERS AFFECTED BY ECCENTRIC LOAD
Piers are often considered as thin-walled structures in structural design of higher bridge piers to facilitate analysis on their strength and stability. Stability analysis model of higher piers were established here based on Numerical method theory as adopted in this paper. Namely, by considering the combined action of pile, soil and pier together, to calculating out the destabilization bearing capacity of piers with different piles and section heights by utilizing 3-D finite element method (3-D FEM). Meanwhile, equivalent stress of different pier sections was computed and destabilization process was discussed hereunder. For lower piers, bearing capacity under mutual effect of pile, soil and pier is less than that of when numerical calculation methods was used; while in higher piers, change of bearing capacity is not conspicuous; destabilization direction were varied along with increment of cross-sectional heights, but the ultimate capacity was not building up. Results of stability analysis on an example presented hereunder are almost identical with the practical situation.
Numerical method eccentric load FEM stability analysis
Shao-Wei Duan Xiao-Wei Tao Yu-Xiong Zhu
College of Civil Engineering and Mechanics,Central South University of Forestry and Technology,Chang Transportation Bureau of XiangTan county,XiangTan 411200,P.R. China
国际会议
长沙
英文
888-892
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）