基于岩质边坡相似材料的锚固界面剪应力分布规律研究

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Abstract Similar materials of rock mass and cement mortar were prepared and similar bolt was selected to study the anchoring mechanism of rock slope. Three kinds of drawing specimens with different anchoring lengths were constructed, and static drawing test analyzed the shear stress distribution on two anchoring interfaces of bolt-mortar and mortar-rock mass. The axial force decreases exponentially with the increase of the anchoring length. The shear stress of the two anchoring interfaces presents a unimodal distribution that first increases and then decreases along the anchoring length. The three stages of the anchor solid drawing processare as follows:the interface undergoes elastic deformation, plastic deformation, and debonding and slip. The shear stress distribution on the anchoring interface of rock slope is obtained for the first time by similar model tests. A new anchoring mechanism is proposed to become not only an important reference value for the related tests but also for the design and construction of the slope anchorage.

Key words： road engineering shear stress distribution pull-out test anchoring interface rock slope bolt

Received: 15 January 2018

Fund:Supported by the National Natural Science Foundation of China(Nos. 41372307,51478065); Henan Province Science and Technology Project(No. 162102310390)

Corresponding Authors: YAO Guo-qiang E-mail: yaogq163@163.com

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	YAO Guo-qiang
	YAN Zhi-xin
	LONG Zhe
	ZHAI Ju-yun

Cite this article:

YAO Guo-qiang,YAN Zhi-xin,LONG Zhe, et al. Simulation Experimental Study on Shear Stress Distribution of Rock Slope Anchoring Interface[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 8-15.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/ OR http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2019/V13/I1/8

[1] CHENG Liang-kui, FAN Jing-lun, HAN Jun, et al. Geotechnical Anchorage[M]. Beijing:China Architecture and Building Press,2003.(in Chinese)
[2] ZHAO Ming-hua, LIAO Bin-bin, LIU Si-si, et al. Distribution of Stresses on Bonded Length of Rock-socketed Anchor Rods under Pile Tip[J]. Journal of Highway and Transportation Research and Development, 2011,28(1):42-46. (in Chinese)
[3] DING Yu, WANG Quan-cai, HE Si-ming. Loading Transfer Mechanism of Dispersion-type Tensile Cables Along Anchoring Section[J]. Rock and Soil Mechanics, 2010,31(2):599-603. (in Chinese)
[4] LUO Yi-ping, SHI Sheng, YAN Zhi-xin. Shear Interaction of Anchorage Body and Rock and Soil Interface under the Action of Uplift Load[J]. Journal of China Coal Society, 2015,40(1):58-64. (in Chinese)
[5] LI C, STILLBORG B. Analytical Models for Rock Bolts[J]. International Journal of Rock Mechanics and Mining Sciences,1999,36(8):1013-1029.
[6] FAN Yun, LIU Si-si. Numerical Calculation of Tension-type Anchor Based on Energy Principle[J]. Journal of Highway and Transportation Research and Development, 2012,29(12):14-20. (in Chinese)
[7] ZHANG Pei-ping, YIN Ke. An Analysis Method of the Whole Working Course for the Force Transferring Mechanism in Fixed Segment of Tensile-type Anchor Bar[J]. Chinese Journal of Underground Space and Engineering, 2009,5(4):716-723. (in Chinese)
[8] YIN J H, ZHOU W H. Influence of grouting pressure and overburden stress on the interface resistance of a soil nail[J]. Journal of Geotechnical and Geoenvironmental Engineering,2009,135(9):1198-1209.
[9] ZHAO Tong-bin, YIN Yan-chun, TAN Yun-liang, et al. Mechanical Test of Bolt Interface and Microscopic Simulation of Transfer Law for Shear Stress[J]. Journal of Mining & Safety Engineering, 2011,28(2):220-224. (in Chinese)
[10] PHILLIPS S H E. Factors Affecting the Design of Anchorages in Rock[J]. London:Cementation Research Ltd,1970.
[11] CAI Y, ESAKI T, JIANG Y J. An Analytical Model to Predict Axial Load in Grouted Rock Bolt for Soft Rock Tunneling[J]. Tunnelling and Underground Space Technology,2004,19(6):607-618.
[12] YOU Chun-an. Mechanical Analysis on Wholly Grouted Anchor[J]. Chinese Journal of Rock Mechanics and Engineering, 2000,19(3):339-341. (in Chinese)
[13] WU Guo-jun, CHEN Wei-zhong, JIA Shan-po, et al.Shear Creep Experiments for Anchorage Interface Mechanics and Nonlinear Rheological Model of Rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2010,29(3):520-527. (in Chinese)
[14] YOU Chun-an, ZHAN Bao-yu, LIU Qiu-yuan, et al. Shear Lag-debonding for Anchorage Section of Prestressed Anchor Cable[J].Chinese Journal of Rock Mechanics and Engineering, 2013,32(4):800-806. (in Chinese)
[15] TAN Yi-ping, ZENG Zhen-qiang. Pull-out Tests on Anchor Bolts under Simple Harmonic Waves[J]. Chinese Journal of Geotechnical Engineering, 2013,35(3):309-414. (in Chinese)
[16] ZHANG Jian-jing, LIAO Wei-ming, OU Yang-fang, et al. Experimental Research on Mechanical Behavior and Bond Performance of Rock-anchor System Subjected to Repeated Load[J]. Chinese Journal of Rock Mechanics and Engineering, 2013,32(4):829-834. (in Chinese)
[17] ZENG Xian-ming, FAN Jun-qi, LI Shi-min. Experimental Study on Interface Shear Stress Interaction of Anchorage Structure[J]. Prestressed Technology, 2008,68(3):22-27. (in Chinese)
[18] YUAN Wen-zhong. Similar Theory and Static Model Test[M]. Chengdu:Southwest Jiao Tong University Press, 1998. (in Chinese)
[19] LI Yun-yan, HU Chuan-rong. Experimental Design and Data Processing[M]. Beijing:Chemical Industry Press, 2010. (in Chinese)