有限元法分析抗滑桩-土坡相互作用系统的稳定性(英文)

Stability Analysis of Pile-Slope Interaction by Finite Element Method

采用有限元法分析了抗滑桩加固后土坡的稳定性.土体被认为是理想弹塑性模型,服从Mohr-Coulomb屈服准则,加固土坡的排桩被简化成等效的板桩,当其达到极限容许弯矩时即认为达到弯断破坏,土坡安全系数的计算采用强度折减法.文中还讨论了抗滑桩类型、抗弯刚度、极限弯矩及排桩设置位置对加固土坡整体稳定性的影响.

The stability of slopes reinforced by piles is analyzed withfinite element method under the hypothesis of plane strain.The soil is idealized to be elastoplastic,obeying Mohr-Coulomb yield criterion.The equivalent sheet-pileis adopted in which the plastic bendingfailure will occur as soon asit reaches the ulti mate allowable moment.The safety factor of the pile-reinforced slope is calculated by using strength reduction method.The effects of types of piles,flexural rigidity,ulti mate allowable moment and the location of piles-rowon safety factor are discussedin detail.