Rock and Soil Mechanics ›› 2021, Vol. 42 ›› Issue (11): 2953-2960.doi: 10.16285/j.rsm.2021.0544

• Rock and Soil Mechanics Excellence Forum • Previous Articles     Next Articles

Pullout simulation on fully grouted rock bolts based on residual shear strength

GUO Jin-gang1, 2, LI Yao-hui1, 2, HE Fu-lian1, CHEN Jian-hang1, ZHAO Guang-ming3, ZHANG Jun-wen1   

  1. 1. School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083; 2. Jinneng Holding Group, Datong, Shanxi 037000; 3. Engineering Research Center of Underground Mine Construction, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, 232001
  • Received:2021-04-13 Revised:2021-09-11 Online:2021-11-11 Published:2021-11-12
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (51974317), the Yue Qi Distinguished Scholar Project in the China University of Mining and Technology (Beijing) (800015Z1138), the Fundamental Research Funds for the Central Universities (2020YJSNY03), the National Natural Science Foundation of China (51904302) and the Open Funding of Engineering Research Center of Underground Mine Construction (JYBGCZX2020105).

PDF (Chinese)

272

Abstract: Fully grouted rock bolts are widely used in mining and civil engineering. In this study, numerical simulation was adopted to study the loading transfer performance of fully grouted rock bolts. First, based on the shear failure behaviour of the interface between the bolt and grout, a bond-slip model considering the residual shear strength was developed. Then, it was incorporated into the structural elements of piles. After that, the experimental pulling tests of rock bolts were carried out to validate the accuracy of this bond-slip model and the corresponding numerical modelling results. Finally, the influence of the residual shear strength, the shear stiffness coefficient and the grouted length on the bolting performance was studied through the validated numerical model. The results showed that the interfacial residual shear strength had a significant effect on the maximum and residual bearing capacity of rock bolts, which cannot be neglected in the test. With the increasing of interfacial shear stiffness coefficient, the maximum bearing capacity of bolts remarkably increased, and meanwhile there is no observable effect on the residual bearing capacity of bolts.

Key words: rock bolting, bond-slip, shear stress, residual shear strength, numerical simulation

CLC Number: 

  • TU 470
[1] HE Yong, HU Guang, ZHANG Zhao, LOU Wei, ZOU Yan-hong, LI Xing, ZHANG Ke-neng. Numerical simulation on the migration and transformation mechanism of hexavalent chromium in contaminated site [J]. Rock and Soil Mechanics, 2022, 43(2): 528-538.
[2] WEI Tian-yu, WANG Xu-hong, LÜ Tao, HU Da-wei, ZHOU Hui, HONG Wen, . Analysis of the influence of wetting expansion and sand mixing rate on the THM coupling process of hybrid buffer material [J]. Rock and Soil Mechanics, 2022, 43(2): 549-562.
[3] HOU Xiao-ping, FAN Heng-hui. Study on rainfall infiltration characteristics of unsaturated fractured soil based on COMSOL Multiphysics [J]. Rock and Soil Mechanics, 2022, 43(2): 563-572.
[4] MA Cheng-hao, ZHU Chang-qi, LIU Hai-feng, CUI Xiang, WANG Tian-min, JIANG Kai-fang, YI Ming-xing, . State-of-the-art review of research on the particle shape of soil [J]. Rock and Soil Mechanics, 2021, 42(8): 2041-2058.
[5] CUI Wei, WANG Li-xin, JIANG Zhi-an, WANG Chao, WANG Xiao-hua, ZHANG She-rong, . Numerical simulation of grouting process in rock mass with rough fracture network based on corrected cubic law [J]. Rock and Soil Mechanics, 2021, 42(8): 2250-2258.
[6] ZHU Chun, HE Man-chao, ZHANG Xiao-hu, TAO Zhi-gang, YIN Qian, LI Li-feng, . Nonlinear mechanical model of constant resistance and large deformation bolt and influence parameters analysis of constant resistance behavior [J]. Rock and Soil Mechanics, 2021, 42(7): 1911-1924.
[7] LIU Fei-yu, JIANG Huai, WANG Jun, . Experimental study on cyclic shear softening characteristics of gravel-geogrid interface [J]. Rock and Soil Mechanics, 2021, 42(6): 1485-1492.
[8] WANG Zhao-yao, LIU Hong-jun, YANG Qi, ZHAO Zhen, HU Rui-geng, . Local scour of large diameter monopile under combined waves and currents [J]. Rock and Soil Mechanics, 2021, 42(4): 1178-1185.
[9] CHEN Meng, CUI Xiu-wen, YAN Xin, WANG Hao, WANG Er-lei, . Prediction model for compressive strength of rock-steel fiber reinforced concrete composite layer [J]. Rock and Soil Mechanics, 2021, 42(3): 638-646.
[10] SHI Feng, LU Kun-lin, YIN Zhi-kai. Determination of three-dimensional passive slip surface of rigid retaining walls in translational failure mode and calculation of earth pressures [J]. Rock and Soil Mechanics, 2021, 42(3): 735-745.
[11] LI Hong-xing, FENG Shi-jin, HE Shao-hua, ZHANG Xiao-lei, SUN Da-ming, . Study on mechanical characteristics of a new PHC short pile foundation for solar power generation in sandy soil [J]. Rock and Soil Mechanics, 2021, 42(12): 3217-3226.
[12] WANG Dong-po, HE Qi-wei, LIU Yan-hui, WEN Ji-wei, LI wei, . Research on the energy dissipation mechanism of rockfall impacts on the improved rockfall attenuator barrier [J]. Rock and Soil Mechanics, 2021, 42(12): 3356-3365.
[13] MEI Jin-ling, CAO Hong, LUO Guan-yong, PAN Hong, . Extension and applicability analysis of a quasi-three-dimensional finite element model to simulate regional groundwater flow problems in multi-layered subsoils [J]. Rock and Soil Mechanics, 2021, 42(12): 3428-3439.
[14] JIN Ai-bing, CHEN Shuai-jun, ZHAO An-yu, SUN Hao, ZHANG Yu-shuai, . Numerical simulation of open-pit mine slope based on unmanned aerial vehicle photogrammetry [J]. Rock and Soil Mechanics, 2021, 42(1): 255-264.
[15] LI Jun, ZHAI Wen-bao, CHEN Zhao-wei, LIU Gong-hui, ZHOU Ying-cao, . Research on random propagation method of hydraulic fracture based on zero-thickness cohesive element [J]. Rock and Soil Mechanics, 2021, 42(1): 265-279.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LI Kui, GAO Bo. Study of construction schemes for metro tunnel crossing river and bridge[J]. , 2010, 31(5): 1509 -1516 .
[2] YANG Bing, YANG Jun, CHANG Zai, GAN Hou-yi, SONG Er-xiang. 3-D granular simulation for compressibility of soil-aggregate mixture[J]. , 2010, 31(5): 1645 -1650 .
[3] XIAO Shi-guo，XIAN Fei，WANG Huan-long. 一种微型桩组合抗滑结构内力分析方法[J]. , 2010, 31(8): 2553 -2559 .
[4] YE Hai-lin, ZHENG Ying-ren, HUANG Run-qiu, DU Xiu-li, LI An-hong4, XU Jiang-bo. Study of application of strength reduction dynamic analysis method to aseismic design of anti-slide piles for landslide[J]. , 2010, 31(S1): 317 -323 .
[5] ZHANG Zhi-pei, PENG Hui, RAO Xiao. Numerical simulation study of grouting diffusion process in soft soil foundation[J]. , 2011, 32(S1): 652 -0655 .
[6] WU Li-zhou , ZHANG Li-min , HUANG Run-qiu. Analytic solution to coupled seepage in layered unsaturated soils[J]. , 2011, 32(8): 2391 -2396 .
[7] LIU Run , WANG Xiu-yan , LIU Yue-hui , WANG Wu-gang. Thermal buckling analysis of submarine buried pipelines with isolated prop initial imperfection[J]. , 2011, 32(S2): 64 -69 .
[8] LIANG Yao-zhe. Analysis of active earth pressure of rigid pile composite foundation[J]. , 2012, 33(S1): 25 -29 .
[9] HAN Jian-xin , LI Shu-cai , LI Shu-chen , YANG Wei-min , WANG Lei . Study of post-peak stress-strain relationship of rock material based on evolution of strength parameters[J]. , 2013, 34(2): 342 -346 .
[10] HUANG Da , CEN Duo-feng , HUANG Run-qiu . Influence of medium strain rate on sandstone with a single pre-crack under uniaxial compression using PFC simulation[J]. , 2013, 34(2): 535 -545 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd