Analysis of the Anchor-micro-pile Composite Anti-slide Structure Based on Stability of Landslide

被引：0
|
作者：
Dong X. [1 ,2 ]
Dong J. [2 ]
He T. [2 ,3 ]
Zheng J. [4 ]
机构：
[1] School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan
[2] Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou
[3] School of Sciences, Lanzhou University of Technology, Lanzhou
[4] Northwest Research Institute Co., Ltd. of China Railway Engineering Corporation, Lanzhou
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2019年 / 27卷 / 02期
关键词：
Anchor; Finite element analysis; Interaction; Mechanical model; Micro-pile; Stability;
D O I：
10.16058/j.issn.1005-0930.2019.02.014
中图分类号：
学科分类号：
摘要：
In order to provide technical support for the design of anchor-micro-pile anti-slide structure, it is of great significance to study its calculation theory. The working mechanism of the anti-slide structure is discussed. The calculation model of the structure under the cooperative work of anchor, micro-pile and soil is established, and it is solved by finite element method. Furthermore, the analysis software for the object-oriented is developed based on MATLAB, and the analysis method and program are verified by the micro-pile model test. In the end, the micro-pile anti-slide structures without anchor and with different diameter of anchor are analyzed through an example. By comparing the calculation and the numerical simulation results, it is known that the two agrees well. The results show that there is a good bearing capacity for the anchor-micro-pile structure. The distributions of the moment, shear force and horizontal displacement in the pile are similar, these values in the rear pile are the maximum while they are minimum in the front pile. The axial force in the rear pile are the maximum while it is the minimum in the middle pile. The force of anchor increases but the horizontal displacement of slope decreases obviously with the increase of anchor diameter. There occurs compression deformation for the combined structure under the action of landslide thrust, which means the front pile and the middle pile should be designed according to stretch bending, while the rear pile should be designed by compression bending. The calculation method proposed in the paper can provide a theoretical basis for the design of anti-slide structure. © 2019, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：391 / 403
页数：12
相关论文
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