土工基础

›› 2018, Vol. 32 ›› Issue (3): 318-321.

• 工程实录 • 上一篇    下一篇

门架式抗滑桩土拱效应的数值分析研究

邱志华1，2   

  1. (1.福建省建筑科学研究院,福州 350025；2.福建省绿色建筑技术重点实验室，福州 350025)
  • 收稿日期:2018-03-05 修回日期:2018-03-16 出版日期:2018-06-22 发布日期:2018-06-26
  • 作者简介:邱志华（1990-），男，硕士研究生，助理工程师，研究方向为岩土工程。

Arching Effect of the Pile Frames and Its Numerical Simulations

QIU Zhihua1,2   

  1. （1.Fujian Academy of Building Research, Fuzhou 350025；
    2.Fujian Key Laboratory of Green Building Technology，Fuzhou 350025）
  • Received:2018-03-05 Revised:2018-03-16 Online:2018-06-22 Published:2018-06-26

摘要： 在群桩的各排桩间土体中普遍存在土拱效应。针对现有的二维平面分析法无法真实的反映出门架式抗滑桩桩间土拱效应，在大型室内模型试验的基础上，对模型试验进行数值分析，采用ABAQUS有限元软件分别建立了不同桩间距、桩排距等情况的三维数值模型，对边坡中门架式抗滑桩的群桩土拱效应进行了详细研究，讨论了均布荷载、桩间距和桩排距等因素对门架式抗滑桩群桩土拱效应的影响，揭示了门架式抗滑桩-土之间的相互作用规律，并获得了门架式抗滑桩合理的桩间距和桩排距的取值范围，对于门架式抗滑桩工程的设计和施工具有一定的指导意义。

关键词: 门架式抗滑桩, 土拱效应, 影响因素, 数值分析

Abstract: It is generally known that the soil arching effect exists in soils behind the multirowed pile frames. Since the twodimensional plane analysis method might not accurately reflect the soil arching effect among between piles in landslide mitigation projects, the threedimensional finite element model for different pile spacings were established by the finite element method using ABAQUS program with parameters calibrated with laboratory test results. The possible soil arching effect influence factors, such as, magnitude of uniform distributed loads, pile spacing and row distance, are discussed. The optimized pile and frame row spacings were obtained to guide the design and construction.

Key words: Framed Pile Structure for Landslide Mitigation, Soil Arching Effect, Influence Factors, Numerical Analysis