岩土工程学报Issue(8)：1399-1404,6.DOI:10.11779/CJGE201508006
一种考虑剪切速率的粗糙结构面剪切强度准则
New shear strength criterion for rough rock joints considering shear velocity
摘要
Abstract
The stability of jointed rock under dynamic loading conditions, which is under different shear velocities, is one of the urgent problems in the current engineering construction. By using JAW-600 coupled shear-flow machine,four groups of rock-like joints with different roughness coefficients are sheared with different shear velocities based on the rock joints from the underground caverns of Huangdao State Oil Reserves. The experimental results show that the shear velocity and joint roughness coefficient obviously affect the shear strength. The shear strength for any rough rock joints decreases with the increasing shear velocity. Meanwhile, the shear strength under any shear velocity shows a linear increase with the joint roughness coefficients. On the basis of the experimental data and Barton’s criterion for shear strength, a new shear strength criterion considering shear velocity for rough rock joints is proposed. Then its correctness is verified by the shear strength of rock joints proposed by Barton with an average estimation error of 10.539% .关键词
岩石结构面/剪切速率/粗糙度/剪切强度准则/直接剪切试验Key words
rock joint/shear velocity/roughness/peak shear strength criterion/direct shear test分类
建筑与水利引用本文复制引用
王刚,张学朋,蒋宇静,张永政..一种考虑剪切速率的粗糙结构面剪切强度准则[J].岩土工程学报,2015,(8):1399-1404,6.基金项目
国家自然科学基金项目（51279097，51479108，51379117）；山东科技大学研究生创新基金项目 （）
