A method for calculating ultimate pull-out capacity of rock bolt based on modified Mohr-Coulomb failure criterion

HE Jian-qing; XIAO Lan; ZHANG Wen-yong; GAO Wen-hua

doi:10.16285/j.rsm.2016.09.007

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

A method for calculating ultimate pull-out capacity of rock bolt based on modified Mohr-Coulomb failure criterion

更新时间：2026-06-25

- A method for calculating ultimate pull-out capacity of rock bolt based on modified Mohr-Coulomb failure criterion
- Vol. 37, Issue 9, Pages: 2484-2488(2016)
- 作者机构：
  
  1. 水能资源利用关键技术湖南省重点实验室,湖南,长沙,410014
  2. 湖南科技大学岩土工程稳定控制与健康监测省重点实验室,湖南,湘潭,411201
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.09.007
  CLC： TU452
- Online First：09 June 2018，
  
  Published：2016
- 稿件说明：
移动端阅览
HE Jian-qing, XIAO Lan, ZHANG Wen-yong, et al. A method for calculating ultimate pull-out capacity of rock bolt based on modified Mohr-Coulomb failure criterion[J]. 2016, 37(9): 2484-2488.
DOI：

HE Jian-qing, XIAO Lan, ZHANG Wen-yong, et al. A method for calculating ultimate pull-out capacity of rock bolt based on modified Mohr-Coulomb failure criterion[J]. 2016, 37(9): 2484-2488. DOI： 10.16285/j.rsm.2016.09.007.

摘要

岩石锚杆基础作为风电机组基础的一种特殊基础型式，可以充分发挥原状岩体的力学性能，具有良好的抗拔性能。已有研究表明，小而非零拉伸截断改进的Mohr-Coulomb（简称M-C）强度准则更适用于描述岩体的破坏特性。基于小而非零拉伸截断改进的M-C强度准则，建立破坏面上单位面积的能量耗损率表达式。从塑性力学极限分析上限定理出发，构建岩楔体平移破坏机构。根据外部作用荷载和岩楔体自重所做的外功率与沿岩楔体圆破坏锥面的能量耗损率相等的条件，建立虚功率方程，并由此得到了岩石锚杆极限抗拔承载力的计算公式。经原型试验验证，推导公式所得计算值与实测值一致性较好，具有一定的可靠性，且能满足工程实际应用要求。

Abstract

The rock bolt foundation is a special type of wind turbine foundation. It shows a good pull-out performance

and can well demonstrate mechanical properties of rock mass in its original state. Recent studies indicate that the modified Mohr-Coulomb (M-C) failure criterion with a small but not zero tension cut-off is more applicable for describing failure characteristics of rock masses. According to the modified M-C failure criterion

an expression is derived with the energy dissipation rate per unit area. Furthermore

the planar translational failure mechanism of rock wedge is put forward

which is based on the upper bound theorem for the limit analysis of soil plasticity mechanics. A virtual power equation is deduced

when the work rate of external loads to self-weight of rock wedge equals to the rate of energy dissipation along the sliding surface of rock wedge. Then a formula is developed for calculating ultimate pull-out capacity of rock bolt. The prototype test results show that the calculated values by this formula are in good agreement with the measured values

which indicates the formula with certain reliability can meet the requirements of engineering application.

关键词

Keywords

references

Views

328

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Investigation on finite element upper bound solution based on rigid translatory moving element

Limit analysis of failure mechanism of prestressed anchor cable based on Hoek-Brown failure criterion

Upper bound method for seismic stability limit analysis of earth-rock dams

Model test on sidewall friction of open caisson

Physical-mechanical properties and durability analysis of foamed lightweight soil based on excavated soil and fly ash

Related Author

YANG Feng

ZHAO Lian-heng

ZHANG Jian

YANG Jun-sheng

LI Shu-cai

WANG Hong-tao

WANG Qi

WANG De-chao

Related Institution

School of Civil Engineering, Central South University

Research Center of Geotechnical and Structural Engineering，Shandong University

Post-Doctoral Scientific Research Station, Yankuang Group Company Limited, Zoucheng

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology

National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University

AI问答

⁰