摘要
基于ABAQUS有限元软件,采用弹塑性有限元强度折减法对抗滑桩加固的土坡进行三维数值分析.考虑桩-土相互作用,探讨强度折减法中以迭代不收敛和特征点位移拐点作为边坡失稳判据的局限性.对于抗滑桩加固的边坡,提出采用特征点位移拐点并结合水平位移限值作为边坡临界破坏的评价标准,分析边坡潜在最危险滑动面和安全系数随抗滑桩桩位变化的规律,从数值模拟角度探讨边坡加固中桩位的合理设置位置.
Based on the software of ABAQUS, combined with the strength reduction method in elasto plastic FEM, 3 dimension numerical analyses on the soil slopes reinforced by anti slide piles was conducted. Considered the pile soil interaction, the limitations of slope collapse criterion in numeri ca] non convergence and characteristic position displacement inflexion with the strength reduction were discussed. Slope collapse criterion of characteristic position displacement inflexion combined with horizontal displacement limitation was provided for slopes reinforced by anti slide piles. The variation laws of the critical slip surfaces and safety factors of slopes with changed The reasonable locations of anti slide piles were obtained by numerical pile locations were discussed. simulation method.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第5期664-669,共6页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省自然科学基金资助项目(2011J01308)
关键词
抗滑桩
滑动面
水平位移
三维有限元
安全系数
anti - slide pile
slip surface
horizontal displacement
3- dimension FEM
safety factor
