Numerical simulation on bolted rock joint shearing performance

查看全文 作　　者：SONG [1,2]Hongwei DUAN [1,2]Yanyan YANG [1,2]Jing

机构地区：[1]School of Architecture and Civil Engineering, China University of Mining & Technology, Xuzhou 221008, China;[2]State Key Laboratory of Geomechanics & Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221008, China

出　　处：《Mining Science and Technology》索引2010年第20卷第3期,共6页

基　　金：Financial support from the National Natural Science Foundation of China(No.50978251);the National Government Building High-Level University Graduate Programs of the China Scholarship Council 摘　　要：A Double Shear Model(DSM) was used in a numerical simulation on bolted rock joint shearing performance.An entire bolt deformed as the letter'U'under a shear load between two joints.Near the bolt-joint intersection,the bolt partly deformed as the letter'Z'.There were two critical points along the bolt:one was at the bolt-joint intersection with zero bending moment and the other at the maximum bending moment(plastic hinge) with zero shear stress.The blocks on two sides slid along the bolt as it deformed. A separation area was found between the two joint contact surfaces of the middle rock block and sided block.This area of separation was related to bolt diameter and external forces.We assume that this area is related to the work of external forces.Further research is needed. 关键词：螺栓接头剪切性能岩石节理数值模拟最大弯矩剪切载荷剪切模式螺栓直径

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Numerical simulation on bolted rock joint shearing performance

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