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本文探讨了饱和粉煤灰在循环荷载下的动力特性,重点研究了固结比和固结应力对其液化性态动强度和非线性应力应变参数的影响。利用粉煤灰作为筑坝材料或建筑材料,是粉煤灰利用的有效途径之一。基于粉煤灰的物理特性,其在较小动荷作用下有可能出现液化破坏。因此,有必要对粉煤灰进行室内动力试验研究。1989年我们结合华北某电厂粉煤灰进行了大量的动三轴试验工作,现将部分试验结果作介绍。
This paper discusses the dynamic characteristics of saturated fly ash under cyclic loading, focusing on the effect of consolidation ratio and consolidation stress on its liquefaction dynamic strength and nonlinear stress-strain parameters. Using fly ash as dam material or building material is one of the effective ways to use fly ash. Based on the physical characteristics of fly ash, it may be destroyed by liquefaction under a small dynamic load. Therefore, it is necessary to carry out indoor dynamic test research on fly ash. In 1989, we conducted a large number of dynamic triaxial tests in conjunction with fly ash from a power plant in North China. We will now introduce some of the test results.