A mechanical model for conebolts

被引：19

作者：

Liang, Yuntao ^{[1
,2
]}

He, Manchao ^{[3
]}

Cao, Chen ^{[3
,4
]}

Wang, Shuren ^{[5
]}

Ren, Ting ^{[4
]}

机构：

[1] State Key Lab Coal Mine Safety Technol, Fushun, Peoples R China

[2] China Coal Res Inst, Fushun Branch, Fushun, Peoples R China

[3] State Key Lab Geomech & Deep Underground Engn, Beijing, Peoples R China

[4] Univ Wollongong, EIS, CME, Wollongong, NSW 2522, Australia

[5] Henan Polytech Univ, Opening Project Key Lab Deep Mine Construct, Jiaozuo, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2017年 / 83卷

关键词：

Cone bolt mechanics; Rock bolting failure; Grout shearing-off; Cone face angle; ENERGY-ABSORBING BOLT; GROUTED CABLE BOLTS; BOND STRENGTH; ROCK; ROCKBOLTS; CONCRETE; SUPPORT; STEEL;

D O I：

10.1016/j.compgeo.2016.10.017

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This paper presents a mechanical model for cone bolts by analysing the cone anchorage function as a wedge-style mechanical anchor. Analytical and numerical methods were employed. The failure of a cone bolt commences with a series of partial shear failure through the grout around the cone, followed by bolt slipping as the actual bearing angle of the bolt decreases to a small value. The theoretical prediction is in good agreement with experimental data in the literature. The effect of the cone's geometric face angle was also analysed with respect to the bond strength. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：142 / 151

页数：10

共 25 条

[1] Dynamic testing of steel for a new type of energy absorbing rock bolt [J].

Ansell, A .

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 2006, 62 (05) :501-512

[2] Influence of bolt-grout bonding on MCB conebolt performance [J].

Cai, M. ;

Champaigne, D. .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2012, 49 :165-175

[3] INFLUENCE OF RIB GEOMETRY ON STRENGTH OF LAPPED JOINTS - AN EXPERIMENTAL AND ANALYTICAL STUDY [J].

CAIRNS, J ;

JONES, K .

MAGAZINE OF CONCRETE RESEARCH, 1995, 47 (172) :253-262

[4]

Cao C., 2012, DUBLIN I TECHNOL, P1

[5] Analytical study of steel bolt profile and its influence on bolt load transfer [J].

Cao, Chen ;

Nemcik, Jan ;

Aziz, Naj ;

Ren, Ting .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2013, 60 :188-195

[6]

Gaudreau DM, 2004, P GROUND SUPP MIN UN

[7] Development of a novel energy-absorbing bolt with extraordinarily large elongation and constant resistance [J].

He, Manchao ;

Gong, Weili ;

Wang, Jiong ;

Qi, Peng ;

Tao, Zhigang ;

Du, Shuai ;

Peng, Yanyan .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2014, 67 :29-42

[8] A CONSTITUTIVE LAW FOR BOND FAILURE OF FULLY-GROUTED CABLE BOLTS USING A MODIFIED HOEK CELL [J].

HYETT, AJ ;

BAWDEN, WF ;

MACSPORRAN, GR ;

MOOSAVI, M .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES & GEOMECHANICS ABSTRACTS, 1995, 32 (01) :11-36

[9] The holding mechanism of under-reamed rockbolts in soft rock [J].

Jeng, FS ;

Huang, TH .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 1999, 36 (06) :761-775

[10]

Kaiser P.K., 1996, Canadian Rockburst Support Handbook

← 1 2 3 →