Characteristic Analysis of Deep Roadway Bolt Based on Hoek-Brown Strain Softening Model

孙闯; 张涛; 顾杨明

doi:10.13409/j.cnki.jdpme.2016.03.026

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Characteristic Analysis of Deep Roadway Bolt Based on Hoek-Brown Strain Softening Model

更新时间：2025-12-11

- Characteristic Analysis of Deep Roadway Bolt Based on Hoek-Brown Strain Softening Model
- Vol. 36, Issue 3, Pages: 493-498(2016)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2016.03.026
  CLC： D353.6
- Published：2016
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[1]孙闯,张涛,顾杨明.基于Hoek-Brown应变软化模型的深部巷道锚杆受力特征研究[J].防灾减灾工程学报,2016,36(03):493-498.

孙闯, 张涛, 顾杨明. Characteristic Analysis of Deep Roadway Bolt Based on Hoek-Brown Strain Softening Model[J]. 2016, 36(3): 493-498.
[1]孙闯,张涛,顾杨明.基于Hoek-Brown应变软化模型的深部巷道锚杆受力特征研究[J].防灾减灾工程学报,2016,36(03):493-498. DOI： 10.13409/j.cnki.jdpme.2016.03.026.

孙闯, 张涛, 顾杨明. Characteristic Analysis of Deep Roadway Bolt Based on Hoek-Brown Strain Softening Model[J]. 2016, 36(3): 493-498. DOI： 10.13409/j.cnki.jdpme.2016.03.026.

摘要

基于量化GSI围岩评级系统及Hoek-Brown应变软化模型

应用FLAC3D数值模拟软件

分析全长粘结锚杆在不同长度及不同本构模型条件下的受力特点

对比分析不同预应力对锚杆轴力及剪力的影响。结果表明:采用理想弹塑性模型与应变软化模型计算得到的锚杆轴力及剪力相差较大;通过现场实际应用可知

应变软化模型能够较为真实地反应围岩的屈服破坏过程

在支护结构设计中

建议采用应变软化模型进行计算

可得到较为精确的计算结果。

Abstract

Based on the quantitative GSI rock mass rating system and Hoek-Brown strain softening model and using the FLAC3 Dnumerical simulation software

we analyse the stress characteristics of fully grouted bolts in different lengths and different constitutive models and study the influence of different prestressed bolt axial forces and shear forces.The results show that on the basis of the ideal elastic-plastic model and strain softening model

the bolt axial force and shear force are quite different.The practical application shows that strain softening model could really give the response of surrounding rock in yield failure process.In the design of supporting structure

using the strain softening model can get more accurate results.

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references

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地下工程岩体剪胀与锚杆支护的相互影响 [J]. 赵星光,蔡美峰,蔡明,贾蓬. 岩石力学与工程学报 . 2010(10)

煤矿巷道锚杆支护应用实例分析 [J]. 康红普,王金华,林健. 岩石力学与工程学报 . 2010(04)

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Application of the convergence-confinement method to tunnels in rock masses exhibiting Hoek–Brown strain-softening behaviour [J] . L.R. Alejano,E. Alonso,A. Rodríguez-Dono,G. Fernández-Manín. International Journal of Rock Mechanics and Mining Sciences . 2009 (1)

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