岩土工程学报2012，Vol.34Issue(10)：1781-1786,6.
不排水升温-降温过程引起的饱和粉质黏土的热力学响应
Thermo-mechanical responses of saturated silty soil to undrained heating-cooling cycles
摘要
Abstract
The thermal-mechanical responses of saturated silty soil to heating-cooling cycles under undrained condition are discussed. The test results show that the variation tendency in the temperature of a specimen is almost consistent with each other in each period of repeated thermal loading, which is independent of confining pressure and cyclic number. The pore pressure increases gradually with the rise in the temperature of the specimen, and furthermore the variation tendency of pore pressure is also similar in each period. Under the same confining pressure, the normalized maximum pore pressure increases as the number of repeated thermal loading increases. In the process of temperature dropping, as the repeated number increases, the normalized pore pressure seems to descend more slowly, while the normalized residual pore pressure increases. Besides, the normalized pore pressure shows a decreasing tendency with the increase of confining pressure. As the temperature increases, the volume of the specimen increases due to the expansion of solid grains and pore water. When the temperature descends, the volume of the specimen begins to decrease gradually and tends to be zero.关键词
饱和土/不排水条件/热力学响应/室内试验/等温固结Key words
saturated soil/undrained condition/thermo-mechanical response/laboratory test/isothermal consolidation分类
建筑与水利引用本文复制引用
白冰,刘文秀,史晓英,杨海朋..不排水升温-降温过程引起的饱和粉质黏土的热力学响应[J].岩土工程学报,2012,34(10):1781-1786,6.基金项目
国家自然科学基金项目（50978022 （）
51279002） （）
中央高校基本科研业务费专项基金项目 （）
