摘要
从能量等效的角度研究岩体的等效强度参数,采用变形加固理论中的塑性余能为等效指标确定复合介质的强度参数,详细推导用于等效复合介质强度参数的等效计算表达式。该表达式表明了复合介质变形和强度参数之间的相关性,通过数值算例研究材料变形参数对强度参数的影响程度以及材料不同配比下复合介质强度参数的变化规律,表明塑性余能等效方法在确定岩体强度参数上的可行性。
The equivalent strength parameters of rock mass(composite medium) are studied from the viewpoint of energy equivalence. Based on the equivalence of the plastic complementary energy, the equivalent computational expression is derived, which shows the correlation between deformation parameters and strength parameters. The influence of the deformation parameters of medium on strength parameters and change law under different ratios of materials are studied by means of numerical examples. The results show that the equivalent method of plastic complementary energy has feasibility to determine the strength parameters of composite medium.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2008年第10期1993-1999,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大研究计划项目(90715041)
国家自然科学基金资助项目(50709014)
清华大学骨干人才计划资助项目
关键词
岩石力学
等效
塑性余能
变形参数
强度参数
rock mechanics
equivalence
plastic complementary energy
deformation parameters
strength parameters