岩石弯曲拉伸试验研究  

Study on Bending Tensile Tests of Rock Samples

作　　者：杨同[1] 王宝学[1] 高谦[1] 李晓[2] 

机构地区：[1]北京科技大学,北京市100083 [2]中国科学院地质与地球物理研究所,北京市100101

出　　处：《勘察科学技术》2004年第6期3-5,53,共4页Site Investigation Science and Technology

摘　　要：岩石弯曲拉伸强度和变形性质是确定岩体力学特性的重要参数。为此,该文对32件砂岩、大理岩、花岗岩岩石试件进行了三点弯曲拉伸试验,获取其抗拉强度,绘制了岩石拉伸应力-应变曲线,给出了拉伸弹性模量。通过此次试验研究,并与其它试验进行比较分析,认为岩石弯曲拉伸试验可获得合理的力学参数,且在岩体工程中具有应用前景。32 samples including sandstone, marble and granite were tested to obtain bending tensile strength in the paper. Stress-strain curves of rock tension and tensile elastic modulus are obtained based on the tests. Comparing the result of 3-point tensile tests with other test methods, it is concluded that the test is successful as a test method of character of rock mechanics. The method will have practical application in the future.

关 键 词：岩石 变形性质 应变曲线 岩体工程 试件 大理岩 岩体力学 花岗岩 砂岩 力学参数 

分 类 号：TU452[建筑科学—岩土工程]