Evaluation of shear strength of rock joints subjected to cyclic loading
Evaluation of shear strength of rock joints subjected to cyclic loading
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DOI：
10.1016/s0267-7261(03)00063-0
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发表时间：
2003-10-01
影响因子：
4
通讯作者：
Buzzi, O
中科院分区：
文献类型：
--
作者：
Jafari, MK;Hosseini, KA;Buzzi, O
本文研究了循环荷载作用下岩石节理抗剪强度的变化规律。相同的关节面准备使用一种先进的成型方法与特殊的砂浆和剪切试验进行这些样品在静态和循环荷载条件下。不同水平的剪切位移施加在样品上，以研究相当大的相对剪切位移之前和期间的联合行为。结果表明，节点的抗剪强度与位移速率（剪切速度）、加载循环次数和应力幅值有关。最后，根据试验结果，建立了循环荷载作用下抗剪强度的数学模型。(C)2003 Elsevier Ltd.保留所有权利。
Variation of the shear strength of rock joints due to cyclic loadings is studied in the present paper. Identical joint surfaces were prepared using a developed moulding method with special mortar and shear tests were performed on these samples under both static and cyclic loading conditions. Different levels of shear displacement were applied on the samples to study joint behaviour before and during considerable relative shear displacement. It was found that the shear strength of joints is related to rate of displacement (shearing velocity), number of loading cycles and stress amplitude. Finally, based on the experimental results, mathematical models were developed for evaluation of shear strength in cyclic loading conditions. (C) 2003 Elsevier Ltd. All rights reserved.