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Consolidation Of Inelastic Clays Under Rectangular Cyclic Loading

机译：矩形循环荷载作用下非弹性黏土的固结

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摘要

This paper presents a semi-analytical solution for one dimensional consolidation problem of inelastic clays under cyclic loading considering the effect of the change of the consolidation coefficient of the soil layer. Due to change of the consolidation coefficient, and time-dependant loading, Terzaghi's theory would not be applicable in cyclic conditions. In this research, a method based on the time variable exchange along with the superimposing rule is employed to overcome these shortcomings. Changes in the consolidation coefficient are applied in the solution by modifying the loading and unloading durations introducing a Virtual Time. Based on the superimposing rule a set of continuous static loads in specified times are used instead of the cyclic load in the transformed time space. Each full cycle of loading is replaced by a pair of static loads with different signs. Based on the Terzaghi's theory the pore-water pressure distribution and the degree of consolidation are calculated for each static load and the results are superimposed. A set of laboratory consolidation tests under cyclic load and numerical analysis are performed in order to verify the presented method. The numerical solution and laboratory tests results showed the accuracy of the presented method.
机译：考虑土层固结系数变化的影响，提出了循环荷载下非弹性黏土一维固结问题的半解析解。由于固结系数的变化和随时间变化的荷载，特扎吉的理论不适用于循环条件。在这项研究中，采用了一种基于时间变量交换和叠加规则的方法来克服这些缺点。通过修改引入虚拟时间的加载和卸载持续时间，可将固结系数的更改应用于解决方案。根据叠加规则，将使用指定时间的一组连续静载荷代替变换后的时间空间中的循环载荷。每个完整的加载周期都由一对带有不同符号的静态负载代替。根据Terzaghi的理论，计算每个静载荷的孔隙水压力分布和固结度，并将结果叠加。为了验证所提出的方法，在循环载荷和数值分析下进行了一组实验室固结测试。数值解和实验室测试结果表明了该方法的准确性。

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