不同尺寸岩石在点荷载作用下应力记忆效应的数值模拟  

Numerical Simulation Research of Stress Memory Effect of Different Size Rocks under Point Load

作　　者：刘明松[1] 谢亮波[2] 

机构地区：[1]龙岩学院 [2]中钢集团马鞍山矿山研究院有限公司

出　　处：《金属矿山》2010年第5期34-37,共4页Metal Mine

摘　　要：利用岩石破裂过程数值模拟软件RFPA2D对5种高宽比岩石试件进行了点荷载循环加载模拟试验。试验结果表明,岩石试件进行点荷载试验具有尺寸效应。岩石试样高×宽为100mm×50mm时,岩石对点荷载作用的应力记忆效应最明显,与实验室试验的结果一致。The point-load-cyclic-loading-simulation tests on five specimens of different H/W ratios are made by using RFPA2D,that is,the rock failure process simulation software.Tests results showed that rock samples in point load tests have size effects,and that stress memory effect is more obvious on the samples of 100 mm× 50 mm（H × W）.This is in accord with the results of laboratory tests,and of great significance for the research of rock point load.

关 键 词：点荷载 应力记忆效应 尺寸效应 

分 类 号：TU458.3[建筑科学—岩土工程]