基于强度试验的胶凝堆石材料破坏准则  

The failure criterion of cemented sand and gravel material based on strength test

作　　者：杨杰[1,2] 蔡新[1,2,3] 郭兴文[3] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水利水电学院,江苏南京210098 [3]河海大学力学与材料学院,江苏南京210098

出　　处：《水利水电科技进展》2013年第2期47-50,共4页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51179061);高等学校博士学科点专项(20100094110014);"十二五"国家科技支撑计划(2012BAD10B02)

摘　　要：基于胶凝堆石料的抗压、抗折和大三轴强度试验,对胶凝堆石料的基本力学特性进行了系统研究,得出试件破坏情况下的应力强度,通过拟合破坏强度和围压的关系式,推导出胶凝掺量为60 kg/m3的胶凝堆石料的破坏准则;进一步拟合破坏强度、围压和胶凝掺量的关系式,推导出胶凝掺量为变量的胶凝堆石料的破坏准则。验证结果表明,所推导的胶凝堆石料破坏准则合理可靠,具有良好的通用性。Based on compression tests, tension tests, and large scale three-axis tests on cemented sand and gravel（CSG） materials, the basic mechanical properties of CSG materials were systematically studied and the stress intensity of CSG was obtained during the CSG failure process. The correlativity between the failure strength of CSG materials and the ambient pressure was analyzed. According to the correlativity, the failure criterion of CSG materials with a cement proportion of 60 kg/m3 was established. The failure criterion of CSG materials with different cement proportions was established by fitting data of the failure strengths of CSG materials, the ambient pressures, and the cement proportions. The results show that the failure criterions of CSG materials have good performance, and show better support ability for similar applications development.

关 键 词：胶凝堆石料 胶凝掺量 破坏准则 大三轴试验 

分 类 号：TV41[水利工程—水工结构工程]