岩土力学2009，Vol.30Issue(z2)：83-87,5.
基于能量平衡法的原状冻土Ⅰ型非线性断裂韧度测试研究
Research on test of modelⅠnonlinear fracture toughness of undisturbed frozen soils based on energy balance method
摘要
Abstract
By using the fracture model based on the principle of energy balance, nonlinear fracture toughness tests on undisturbed frozen soils were conducted. According to the variational rules of heave quantities, the frozen depths and time at different depths, the temperatures were controlled strictly when the specimens were being made and tested. The nonlinear fracture toughness (G)_C and G~*_C of modelⅠ straight crack specimens are obtained, which make a meaningful attempt and spread the thoughts for the research of nonlinear fracture toughness of undisturbed frozen soils.关键词
原状冻土/现场试验/能量平衡法/非线性断裂韧度Key words
undisturbed frozen soils/ field test/ energy balance method/ nonlinear fracture toughness分类
建筑与水利引用本文复制引用
刘晓洲,吴寅,王忠昶,李洪升,武俊杰..基于能量平衡法的原状冻土Ⅰ型非线性断裂韧度测试研究[J].岩土力学,2009,30(z2):83-87,5.基金项目
国家自然科学基金资助(No. 50809007) （No. 50809007）
辽宁省高等学校科研项目资助(No. 2008023). （No. 2008023）
