EXPERIMENTAL STUDY OF ANCHORING EFFECT OF DISCONTINUOUS JOINTED ROCK MASS UNDER UNIAXIAL TENSION
LI Shucai1,ZHANG Ning2,LU Aizhong2,LI Mingtian1,3,YANG Lei1
(1. Geotechnical and Structural Engineering Research Center,Shandong University,Jinan,Shandong 250061,China;
2. Institute of Hydroelectric and Geotechnical Engineering,North China Electric Power University,Beijing 102206,China;
3. Department of Civil Engineering,Shandong Jiaotong University,Jinan,Shandong 250023,China)
Abstract:The modified rubber powder-cement mortar and glass fiber reinforced plastics (GFRP) are used to simulate the rock and bolt,respectively. The reinforced effect of bolt on rock mass with perforation joints is studied by laboratory uniaxial tension test. The experimental results show that: (1) Comparison with the failure shape of sample without bolts,the anchored samples present the plastic failure characteristic. (2) The bolts enhance the deformation modulus and uniaxial tensile strength of the jointed rock mass;and the deformation modulus and uniaxial tensile strength increase at first,then decrease with the increase of the anchoring angles. (3) The latter failure modes of reinforced samples change with the increase of anchoring angles,which is relative to the combined effect of bond performance and shear resistance properties.
李术才1,张 宁2,吕爱钟2,李明田1,3,杨 磊1. 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): 1579-1586.
LI Shucai1,ZHANG Ning2,LU Aizhong2,LI Mingtian1,3,YANG Lei1. EXPERIMENTAL STUDY OF ANCHORING EFFECT OF DISCONTINUOUS JOINTED ROCK MASS UNDER UNIAXIAL TENSION. , 2011, 30(8): 1579-1586.
李术才. 加锚断续节理岩体断裂损伤模型及其应用[博士学位论文][D]. 武汉:中国科学院武汉岩土力学研究所,1996.(LI Shucai. Anchored discontinuous jointed rockmass fracture-damage model and its application[Ph. D. Thesis][D]. Wuhan:Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,1996.(in Chinese))
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