动静组合加载下花岗岩损伤断裂特征  

Damage and Fracture Property of Granite under Coupled Static-dynamic Load

作　　者：万国香[1] 王其胜[2] 

机构地区：[1]嘉应学院物理与光信息科技学院,广东梅州514015 [2]嘉应学院土木工程学院,广东梅州514015

出　　处：《嘉应学院学报》2013年第2期37-39,共3页Journal of Jiaying University

基　　金：广东省高校优秀青年创新人才培育项目(LYM09126);梅州市自然科学研究项目(2011KJY02)

摘　　要：在霍普金森试验系统上进行了花岗岩破坏的动静组合加载实验,根据实验结果,分析了岩石在动静组合加载下损伤断裂机制与特征.结果表明,不同动静组合加载下岩石破碎的粒度分布具有明显的率变效应;采用张开位移法计算出了岩石破裂时裂纹的宽度.The tests of granite failure under coupled static - dynamic load were made on the SHPB test system. Damage and fracture property of granite under coupled static - dynamic load had been analyzed based on the experi- mental results. The results show that the fractal dimension has significant effect relating to strain rate of samples. The width of crack had been calculated using opening - displacement method.

关 键 词：动静组合加载 花岗岩 损伤 断裂 

分 类 号：TU45[建筑科学—岩土工程]