关于有效应力原理的几个问题

Some problems about principle of effective stress

分析了关于饱和土体有效应力原理的一些错误的概念和理解,针对在饱和土中的孔隙水压力是否需要折减,黏性土的结合水能否传递水压力,试验中和原位孔隙水压力和地下室浮力的量测以及岩石、混凝土和黏土中有效应力原理的实用性等问题进行了讨论。指出长期的工程实践和大量的试验成果表明有效应力原理对于饱和砂土和黏土都是适用的和有效的。

Some mistakes and wrong concepts about the principle of effective stress in saturated soil are pointed out and analyzed.Some problems in the field are discussed,for example,the reduction of pore water pressure in clay,the diffusion of bound water in clay,the accuracy of the principle of effective stress in rock,concrete and clay,the measurement of pore water pressure in clay and uplift pressure on basement.Through the long processs of practice and experiments,a conclusion is drawn that the principle of effective stress is applicable and effective in both saturated sand and clay.