Experimental Studies on Mechanical Properties of Rock Joints under Dynamic Loading
Experimental Studies on Mechanical Properties of Rock Joints under Dynamic Loading
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DOI：
10.4028/www.scientific.net/kem.326-328.1709
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发表时间：
2006-12
期刊：
影响因子：
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通讯作者：
Hai Bo Li;H. Feng;Bo Liu;J. Li
中科院分区：
文献类型：
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作者：
Hai Bo Li;H. Feng;Bo Liu;J. Li
为了研究岩石节理在不同剪切速度、正应力和波动角作用下的强度和变形特性，本文利用RMT-150C型试验机对人工混凝土岩石节理试样进行了系列试验。试验结果表明，峰值抗剪强度随剪切速度的增大而减小，且减小幅度随剪切速度的增大而减小。节理抗剪强度随波动角的增大而增大，随法向应力的增大而线性增大。剪切刚度随法向应力、波动角和剪切速度的增大而增大，且有减小的趋势。
In order to study the strength and deformation properties of rock joint under different shear velocities, normal stresses and undulation angles, series testes are conducted by a RMT-150C testing machines with artificial concrete rock joint samples in the present paper. Base on the experimental results, it can be found that the peak shear strengths decrease with the increment of shear velocity, and the decreasing rates tend to decrease with the increasing shear velocity. The shear strength of rock joints increase with the increasing undulation angles, and linearly increase with the increment of normal stress. It is also indicated that the shear stiffness increase with the increasing normal stress, undulation angle as well as the shear velocity with a decreasing tendency.