Analysis of Stress Distribution Law of Anchoring Interface of Rock Mass with Penetrating Joints

SONG Yang

您当前的位置：

首页 >

文章列表页 >

Analysis of Stress Distribution Law of Anchoring Interface of Rock Mass with Penetrating Joints

更新时间：2025-09-25

- Analysis of Stress Distribution Law of Anchoring Interface of Rock Mass with Penetrating Joints
- Issue 3, Pages: 387-394(2020)
- 作者机构：
  
  辽宁工程技术大学建筑与交通学院,辽宁,阜新,123000
- 作者简介：
- 基金信息：
- DOI：
  CLC： U455.7+1
- Published：2020
- 稿件说明：
移动端阅览
宋洋,王贺平,常泳涛,李永启.含贯通节理岩体锚固界面应力分布规律分析∗[J].防灾减灾工程学报,2020,(3):387-394

SONG Yang. Analysis of Stress Distribution Law of Anchoring Interface of Rock Mass with Penetrating Joints[J]. 2020, (3): 387-394.
宋洋,王贺平,常泳涛,李永启.含贯通节理岩体锚固界面应力分布规律分析∗[J].防灾减灾工程学报,2020,(3):387-394 DOI：

SONG Yang. Analysis of Stress Distribution Law of Anchoring Interface of Rock Mass with Penetrating Joints[J]. 2020, (3): 387-394. DOI：

摘要

在拉拔条件下，对全长注浆锚杆在含贯通节理岩体中界面应力分布规律进行分析研究。修订了无节理岩体界面剪应力分布函数，确定了一定条件下修订系数的取值，定义了应力传递参数C，采用有限差分软件Flac3d分析了其影响因子c 、φ 、ψ 、β 的影响作用。确定了主影响因子锚固角β ，并且在修订公式中加入了锚固角β 因子。分析了不同锚固角度下浆?岩界面剪应力的分布规律。结果表明，在带肋钢筋肋间处产生应力集中现象，注浆体起到了均化作用。在拉拔条件下含贯通节理岩体主要在锚端与节理面附近发生应力集中现象。上下部岩体浆?岩界面剪应力呈双曲线形式分布。浆?岩界面剪应力随着锚固角β 减小，呈先减小后增大趋势。意味着当锚杆锚固角度在60°附近时，对岩体的锚固效果最好。

Abstract

Considering the pullout conditions

the stress distribution law of the interface between the full-length grouted rock bolt and rock mass with penetrating joints is analyzed. The interface shear stress distribution function of rock mass without joints is modified.. The value of the correction factor under certain conditions is determined. The stress transfer parameter C is defined and the finite difference software Flac3d is used to analyze the influence of its influence factors c 、φ 、ψ 、β . The main influence factor anchor angle β is determined and the anchoring angle factor β is added to the modified formula. The distribution of shear stress at the pulp-rock interface under different anchorage angles is analyzed. The results show that stress concentration occurs in the ribbed steel bars

and the grouting body plays a homogenization role. Under the pullout condition

the stress-concentrated phenomenon occurs mainly in the vicinity of the anchor end and the joint surface. The shear stress of the upper and lower rock mass at the slurry-rock interface follows the hyperbolic distribution. The shear stress of the slurry-rock interface decreases with the anchoring angle β and decreases first and then increases. It means that when the inclination of the anchor is around 60°

the anchoring effect on the rock mass is the best.

关键词

Keywords

references

刘泉声,雷广峰,彭星新.深部裂隙岩体锚固机制研究进展与思考[J].岩石力学与工程学报,2016,35(2):312-332.Liu Q Sh,Lei G F,Peng X X.Advance and review on the anchoring mechanism in deep fractured rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(2):312-332.(in Chinese)

徐开山.全长黏结系统拉拔变形与破坏机理研究[D].青岛：山东科技大学,2017.Xu K Sh.Study on drawing deformation and failure mechanism of wholly grouted anchoring system[D].Qingdao:Shandong University of Science and Technology,2017.(in Chinese)

Hariyadi,Munemoto S,Sonoda Y.Experimental analysis of anchor bolt in concrete under the pull-out loading[J].Procedia Engineering,2017,171:926-933.

Zhou H,Xiao M,Chen J T.Analysis of a numerical simulation method of fully grouted and anti-seismic support bolts in underground geotechnical engineering[J].Computers and Geotechnics,2016,76:61-74.

Li C C.Analysis of inflatable rock bolts[J].Rock? Mechanics? and Rock Engineering,2016,49(1):273-289.

贺若兰,张平,李宁,等.拉拔工况下全长黏结锚杆工作机理[J].中南大学学报(自然科学版),2006,37(2):401-407.He R L,Zhang P,Li N,et al.Working mechanism of fully grouted bolt in pull out working state[J].Journal of Central South University(Science and Technology),2006,37(2):401-407.(in Chinese)

许万忠,曹平,高秉勋,等.节理裂隙边坡锚注加固力学模型与实验研究[J].中南大学学报(自然科学版),2012,43(7):2 740-2 745.Xu W Zh,Cao P,Gao B X,et al.Mechanics model and test of bolting grouting reinforcement of jointed cranny slope[J].Journal of Central South University(Science and Technology),2012,43(7):2 740-2 745.(in Chinese)

张永政,王刚,马明,等.不同粗糙度下锚固节理破坏机理宏细观研究[J].中南大学学报(自然科学版),2017,48(12):3 373-3 383.Zhang Y Zh,Wang G,Ma M,et al.Macro-micro study on failure mechanism of rock mass anchorage joints under different roughness[J],Journal of Central South University(Science and Technology),2017,48(12):3 373-3 383.(in Chinese)

腾俊洋,张宇宁,唐建新,等.锚固方式对节理岩体剪切性能影响试验研究[J].岩土力学,2017,38(8):2 279-2 285.Teng J Y,Zhang Y N,Tang J X,et al.Experimental study on shear behavior of jointed rock mass with anchorage mode[J].Rock and Soil Mechanics,2017,38(8):2 279-2 285.(in Chinese)

王平,冯涛,朱永建,等.加锚预制裂隙类岩体锚固机制试验研究及其数值模拟[J].岩土力学,2016,37(3):793-801.Wang P,Feng T,Zhu Y J,et al.Experimental study and numerical simulation of anchoring mechanism of anchored rocklike material with prefabricated fracture[J].Rock and Soil Mechanics,2016,37(3):793-801.(in Chinese)

Mohammadi M,Hossaini M F.Modification of rock mass rating system:interbedding of strong and weak rock layers[J].Journal of Rock Mechanics and Geotechnical? Engineering,2017，9(6):1 165-1 170.

Kang Z Q,Zhang X Y,Luo Z W,et al.Numerical simulation analysis on anchored shear test of the fractured rock and the slope rock mass[J].Applied Mechanics and Materials,2013,312:215-219.

张季如，唐保付.锚杆荷载传递机理分析的双曲函数模型[J].岩土工程学报,2002,24(2):183-192.Zhang J R,Tang B F.Hyperbolic function model to analyze load transfer mechanism on olts[J].Chinese Journal of Geotechnical Engineering,2002,24(2):183-192.(in Chinese)

朱训国.地下工程中注浆岩石锚杆锚固机理研究[D].大连:大连理工大学,2007.Zhu X G.The reinforcement mechanics of fully grouted rock bolt? in underground engineering[D].Dalian:School of? Dalian University of Technology,2007.(in Chinese)

李术才,张宁,吕爱钟,等.单轴拉伸条件下断续节理岩体锚固效应试验研究[J].岩石力学与工程学报,2011,30(8):1 579-1 586.Li Sh C,Zhang N,Lyu A Zh,et al.Experimental study of anchoring effect of discontinuous jointed rock mass under uniaxial tension[J].Chinese Journal of RockMechanics and Engineering,2011,30(8):1 579-1 586.(in Chinese)

Views

382

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

⁰