锚固深度对双排抗滑桩力学性能影响

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摘要针对红岩滑坡双排抗滑桩施工过程中前、后排抗滑桩锚固深度的选取问题，基于FLAC3D程序，建立简化的双排抗滑桩数值计算模型，考虑桩、土相互作用，通过在滑坡体边界施加位移的方法模拟作用在抗滑桩上的水平推力，对前排和后排抗滑桩锚固深度变化时双排抗滑桩侧向位移、弯矩、剪力和抗滑力的变化规律进行研究，研究发现，前排或后排抗滑桩锚固深度的变化对双排抗滑桩的侧向位移、弯矩、剪力和抗滑力有显著影响，且该影响与所施加的边界位移有关。

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关键词 ：桩基础, 锚固深度, 双排抗滑桩, 数值分析

Abstract：According to the problem of selection of anchorage depths of front-row and back-row piles in double-row anti-slide piles in Hongyan landslide project，a simplified calculation model is built based on the FLAC3D program. In this model，pile-soil interaction is considered by applying displacement on the boundary of sliding mass to simulate the horizontal thrust force acting on anti-slide piles. Based on this numerical model，variations of deflection，bending moment，shear force and sliding resistance of the double-row anti-slide piles are studied under different anchorage depths of the front-row and back-row anti-slide piles. It is found that the deflection，bending moment，shear force and sliding resistance are affected by the anchorage depths of the front-row and back-row anti-slide piles；what?s more，the affected degree is related to the values of displacement applied on the boundary of sliding mass.

Key words： pile foundations anchorage depth double-row anti-slide piles numerical analysis

收稿日期: 2013-05-28

引用本文:

于洋1，孙红月2，尚岳全1. 锚固深度对双排抗滑桩力学性能影响[J]. 岩石力学与工程学报, 2013, 32(10): 1999-2007.
YU Yang1，SUN Hongyue2，SHANG Yuequan1. INFLUENCE OF ANCHORAGE DEPTH ON MECHANICAL BEHAVIOUR OF DOUBLE-ROW ANTI-SLIDE PILES. , 2013, 32(10): 1999-2007.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/I10/1999

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