Experimental study on bolting effects of bolted joint rock masses considering strength of bolts

LIU Guangjian; QIU Weiqi; DU Cheng; LUO Zhanyou; YANG Biao; WANG Xuhong; WANG Zhicheng; ZHOU Hao; CHEN Xi

doi:10.11779/CJGE20231135

Volume 47 Issue 3

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Chinese Journal of Geotechnical Engineering > 2025 > 47(3): 580-588. > DOI: 10.11779/CJGE20231135

LIU Guangjian, QIU Weiqi, DU Cheng, LUO Zhanyou, YANG Biao, WANG Xuhong, WANG Zhicheng, ZHOU Hao, CHEN Xi. Experimental study on bolting effects of bolted joint rock masses considering strength of bolts[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(3): 580-588. DOI: 10.11779/CJGE20231135

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Experimental study on bolting effects of bolted joint rock masses considering strength of bolts

1.
Institute of Rock Mechanics, Ningbo University, Ningbo 315000, China
2.
Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province, Shaoxing University, Shaoxing 312000, China
3.
School of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing 100083 China
4.
Ningbo Urban Rail Investment and Development Co., Ltd., Ningbo 315000 China

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Received Date: November 20, 2023
Available Online: June 05, 2024

Graphical Abstract

Abstract

Abstract

The strength of bolts is mainly affected by their diameter and materials (tensile strength). It is very important to improve the shear resistance of bolted joint rock masses. The shear tests on bolted joint are carried out. The influences of the strength of bolts on the shear deformation characteristics and bolting effects of bolted joint are studied. A model for calculating the shear resistance of bolted joint considering the strength of bolts is proposed, and the contribution of axial force and shear force of bolts to the shear resistance of joints under different strengths of bolts is analyzed. The results show that: (1) With the increase of the bolt diameter, the peak shear resistance of the bolted joint increases linearly. When the bolt diameter exceeds a certain critical value, it will play a bolting role. The greater the tensile strength of the bolts, the smaller the critical value. (2) With the increase of the diameter and tensile strength of the bolts, the plastic hinge of the bolts moves outward, the length of the deformation section increases, the capability of the bolts to resist deformation and failure is enhanced, and the shear resistance of the joints is enhanced. (3) The shear process of jointed joint can be divided into four stages: elastic, yielding, strengthening and residual stages. At the elastic and yielding stages, the bolts mainly play the role of pins. Their contribution is positively correlated with their tensile strength, and the relationship with the bolt diameter is affected by the thickness of the anchoring agent. At the strengthening stage, the bolts form a plastic hinge, and their contribution is provided by their shear resistance and axial force, which is positively correlated with the tensile strength and bolt diameter. At the residual stage, the fracture of the bolts does not provide shear resistance. (4) Based on the large deformation theory of the bolts, the anti-shear force model for bolted joint considering the strength of the bolts is proposed. The analysis shows that with the increase of the bolt diameter and tensile strength, the proportion of contribution of their axial force increases, and that of their contribution of shear force decreases.
- bolted joint,
- bolting effect,
- shear resistance model,
- bolt diameter,
- tensile strength

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References (23)

References

[1]	王发玲, 刘才华, 龚哲. 顺层岩质边坡锚杆支护机制研究[J]. 岩石力学与工程学报, 2014, 33(7): 1465-1470. WANG Faling, LIU Caihua, GONG Zhe. Mechanisms of bolt support for bedding rock slopes[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(7): 1465-1470. (in Chinese)
[2]	康红普, 王金华, 林健. 煤矿巷道锚杆支护应用实例分析[J]. 岩石力学与工程学报, 2010, 29(4): 649-664. KANG Hongpu, WANG Jinhua, LIN Jian. Case studies of rock bolting in coal mine roadways[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(4): 649-664. (in Chinese)
[3]	王亮清, 朱林锋, 郑罗斌, 等. 考虑节理粗糙度的锚固节理岩体剪切试验[J]. 中国公路学报, 2021, 34(6): 38-47. WANG Liangqing, ZHU Linfeng, ZHENG Luobin, et al. Shear test of bolted joint rock masses considering joint roughness[J]. China Journal of Highway and Transport, 2021, 34(6): 38-47. (in Chinese)
[4]	宋洋, 范波, 王贺平. 考虑法向应力与岩石强度的加锚节理岩体剪切力学模型研究[J]. 岩石力学与工程学报, 2023, 42(6): 1325-1335. SONG Yang, FAN Bo, WANG Heping, Research on shear mechanics model of anchored-jointed rock mass considering normal stress and rock strength[J]. Chinese Journal of Rock Mechanics and Engineering, 2023, 42(6): 1325-1335. (in Chinese)
[5]	刘泉声, 雷广峰, 彭星新, 等. 白砂岩、大理岩及花岗岩加锚剪切力学特性研究[J]. 岩石力学与工程学报, 2018, 37(增刊2): 4007-4015. LIU Quansheng, LEI Guangfeng, PENG Xingxin, et al. Study on shear mechanical properties of sandstone, marble and granite after anchoring[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(S2): 4007-4015. (in Chinese)
[6]	JIANG Y J, LI X P, LIU J K, et al. Study on shear behavior and failure characteristics of bolted anisotropic rock joints[J]. Materials, 2023, 16(6): 2210. doi: 10.3390/ma16062210
[7]	郑罗斌, 王亮清, 朱林锋, 等. 锁定方式对锚固节理剪切特性影响的试验研究[J]. 岩土力学, 2021, 42(4): 1056-1064, 1087. ZHENG Luobin, WANG Liangqing, ZHU Linfeng, et al. Experimental study on the effect of locking mode on shear characteristics of bolted rock joint[J]. Rock and Soil Mechanics, 2021, 42(4): 1056-1064, 1087. (in Chinese)
[8]	SPANG K, EGGER P. Action of fully-grouted bolts in jointed rock and factors of influence[J]. Rock Mechanics and Rock Engineering, 1990, 23(3): 201-229. doi: 10.1007/BF01022954
[9]	MAIOLINO S, PELLET F. Full scale lab testing for the determination of rock bolt contribution to reinforced joint shear strength[C]// 13th ISRM International Congress of Rock Mechanics, Montreal, Canada, 2015.
[10]	FERRERO A M. The shear strength of reinforced rock joints[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1995, 32(6): 595-605.
[11]	刘泉声, 雷广峰, 彭星新, 等. 节理岩体中锚杆剪切力学模型研究及试验验证[J]. 岩土工程学报, 2018, 40(5): 794-801. doi: 10.11779/CJGE201805003 LIU Quansheng, LEI Guangfeng, PENG Xingxin, et al. Shearing mechanical model and experimental verification of bolts in jointed rock mass[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(5): 794-801. (in Chinese) doi: 10.11779/CJGE201805003
[12]	HE M C, REN S L, XU H T, et al. Experimental study on the shear performance of quasi-NPR steel bolted rock joints[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2023, 15(2): 350-362. doi: 10.1016/j.jrmge.2022.03.011
[13]	张书博, 王长盛, 王刚, 等. BFRP筋锚固节理岩体剪切行为试验研究[J]. 岩石力学与工程学报, 2022, 41(4): 712-724. ZHANG Shubo, WANG Changsheng, WANG Gang, et al. Experimental study on the shear behaviors of bolted rock joints reinforced with BFRP bars[J]. Chinese Journal of Rock Mechanics and Engineering, 2022, 41(4): 712-724. (in Chinese)
[14]	陶志刚, 郭爱鹏, 何满潮, 等. 微观负泊松比锚杆静力学特性及其工程应用研究[J]. 岩土力学, 2022, 43(3): 808-818. TAO Zhigang, GUO Aipeng, HE Manchao, et al. Static characteristics and engineering applications of micro negative Poisson's ratio bolt[J]. Rock and Soil Mechanics, 2022, 43(3): 808-818. (in Chinese)
[15]	杜时贵, 吕原君, 罗战友, 等. 岩体结构面抗剪强度尺寸效应联合试验系统及初级应用研究[J]. 岩石力学与工程学报, 2021, 40(7): 1337-1349. DU Shigui, LYU Yuanjun, LUO Zhanyou, et al. Combined test system for size effect of rock joint shear strength and its primary application research[J]. Chinese Journal of Rock Mechanics and Engineering, 2021, 40(7): 1337-1349. (in Chinese)
[16]	张伟, 刘泉声. 基于剪切试验的预应力锚杆变形性能分析[J]. 岩土力学, 2014, 35(8): 2231-2240. ZHANG Wei, LIU Quansheng. Analysis of deformation characteristics of prestressed anchor bolt based on shear test[J]. Rock and Soil Mechanics, 2014, 35(8): 2231-2240. (in Chinese)
[17]	LI C C. Field observations of rock bolts in high stress rock masses[J]. Rock Mechanics and Rock Engineering, 2010, 43(4): 491-496. doi: 10.1007/s00603-009-0067-8
[18]	李文彬, 刘志伟, 张玉柱, 等. 煤矿巷道扩孔锚固体抗剪特性研究[J]. 煤炭学报, 2019, 44(12): 3887-3893. LI Wenbin, LIU Zhiwei, ZHANG Yuzhu, et al. Shearing characteristics of reaming anchorage body in coal mine roadway[J]. Journal of China Coal Society, 2019, 44(12): 3887-3893. (in Chinese)
[19]	CHEN W Q, LI Y J. Analytical model of bolt shear resistance considering progressive yield of surrounding material[J]. SN Applied Sciences, 2022, 4(2): 42. doi: 10.1007/s42452-021-04923-8
[20]	HOLMBERG M. The Mechanical Behavior of Untensioned Grouted Rock Bolts[D]. Stockholm: Royal Institute of Technology, 1991.
[21]	LI Y Z, TANNANT D D, PANG J Y, et al. Experimental and analytical investigation of the shear resistance of a rock joint held by a fully-grouted bolt and subject to large deformations[J]. Transportation Geotechnics, 2021, 31: 100671. doi: 10.1016/j.trgeo.2021.100671
[22]	MAEKAWA K, QURESHI J. Computational model for reinforcing bar embedded in concrete under combined axial pullout and transverse displacement[J]. Doboku Gakkai Ronbunshu, 1996(538): 227-239.
[23]	HE M C, REN S L, GUO L J, et al. Experimental study on influence of host rock strength on shear performance of Micro-NPR steel bolted rock joints[J]. International Journal of Rock Mechanics and Mining Sciences, 2022, 159: 105236. doi: 10.1016/j.ijrmms.2022.105236

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