平台巴西圆盘试样岩石动态拉伸特性的试验研究  

An experiment study on rock tensile strength with flattened Brazilian disc specimen under dynamic loading

作　　者：苏碧军[1] 王启智[1] 

机构地区：[1]四川大学土木力学系,四川成都610065

出　　处：《长江科学院院报》2004年第1期22-25,共4页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金资助项目(40172049)

摘　　要：采用INSTRON电液伺服材料试验机对大理岩平台巴西圆盘试样实施了动荷载试验,获得了大理岩在动荷载下的拉伸强度与弹性模量,并与静态实验进行了比较分析。结果表明大理岩在动荷载下的拉伸强度与弹性模量比静荷载下均有提高。与完整平台试样比较,平台有助于试样从中心起裂。总结了试样加工和测试方面的经验,探讨了岩石在动荷载下的破坏机理。The dynamic tests of a flattened Brazilian disc marble specimen are carried out by using the Instron servo material testing system. The tensile strengths and elastic moduli of the marble under dynamic loading are obtained, and compared with these under static loading. The test results show that the values of tensile strengths and elastic moduli under dynamic loading are higher than the latter.The experience of the specimen machining and testing is summarized and the failure mechanism of rock material under dynamic loading is also discussed.

关 键 词：大理岩 弹性模量 拉伸强度 平台巴西圆盘试样 动荷载试验 

分 类 号：TU458[建筑科学—岩土工程]