摘要
Hoek- Brown准则在节理岩体边坡 ,基础和地下开挖工程的设计和施工中 ,近十余年来已在许多国家广泛应用。采用三轴试验确定参数 m和 s,已有一套完备的程序。但是现场只能采用直剪试验 ,目前的方法尚不合理 ,本文提出了一种改进的参数反分析的正演法。研究得到的结论对实际工程具有现实意义。
The well known Hoek-Brown rock mass failure criterion has been successfully applied in the preliminary design of underground excavations, slopes and foundations in jointed rock masses. Though there has been a complete program for determining parameter m and s by tri axial test, there was only the direct shear test could be applied in situ. In this paper, the back analysis method to estimate the strength parameters of Hoek-Brown criterion is put forward. The proposed procedure provides a rational basis to assess the suitability of rating methods and their relationship with the rock mass strength parameters by dint of the in situ direct shear tests.
出处
《重庆建筑大学学报》
CSCD
2000年第z1期118-122,共5页
Journal of Chongqing Jianzhu University
关键词
岩体
强度准则
反分析
直剪试验
正演法
rock mass
strength criterion
back analysis
direct shear test
direct deduction
