Numerical simulation analysis of pressure diffusion anchor cable’s effect mechanism

XIA Yuan-you; FAN Wei-qin; RUI Rui; WANG Yan-li

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Numerical simulation analysis of pressure diffusion anchor cable’s effect mechanism

更新时间：2026-06-25

- Numerical simulation analysis of pressure diffusion anchor cable’s effect mechanism
- Vol. 29, Issue 11, (2008)
- 作者机构：
  
  武汉理工大学,武汉,430070
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU45
- Online First：07 August 2013，
  
  Published：2008
- 稿件说明：
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XIA Yuan-you, FAN Wei-qin, RUI Rui, et al. Numerical simulation analysis of pressure diffusion anchor cable’s effect mechanism[J]. 2008, 29(11).
DOI：

XIA Yuan-you, FAN Wei-qin, RUI Rui, et al. Numerical simulation analysis of pressure diffusion anchor cable’s effect mechanism[J]. 2008, 29(11). DOI：

摘要

通过FLAC3D程序，用实体单元模拟了岩体和砂浆体，用结构单元来模拟锚索，在砂浆体和岩体间设置接触面，对锚索施加预应力时采用新的建模方法，即通过结构单元来模拟压力分散型锚索的承压板，代替在承压板的位置施加均布力的方法，建立预应力锚固数值仿真模型。通过模拟试验，分析了接触面单元、岩体单元以及砂浆体单元的应力云图等，更加清晰地显示了压力分散型预应力锚索作用下岩体沿锚索轴向的应力、砂浆体与孔壁之间的粘结应力分布等情况。

Abstract

In this paper

the rock and mortar is simulated by solid mass element

the cable is simulated by structural element

the interface is setted between the rock and mortar

and the prestress is applied to the cable according to the new method in FLAC3D program，that is to say

the board in pressure diffusion anchor cable is simulated by structural element rather than the distributed loads gained by the theoretical analysis are applied to the board. And then the numerical simulation model of prestress anchorage is established

After that

the stress nephogram of the interface

rock and mortar mass is analysed; and then the axial stress along cable in rock mass

bond stress distribution between mortar mass cell and membrane

which is affected by pressure diffusion anchor cable are displayed more clearly.

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