土的卸荷回弹试验及其时间过程的计算方法

发布时间：2018-05-26 08:23

本文选题：卸荷回弹 + 变Cv方法　；参考：《岩土工程学报》2015年06期

【摘要】：主要进行两方面的研究:1进行了土的回弹试验研究。用两种制备土样,进行了加卸荷循环试验研究。通过试验,研究了固结系数/回弹系数在试验过程中的变化规律。通过试验证实,固结系数与回弹系数不是一个固定的常数,是一个以加卸荷过程为周期循环重复变化的过程因子。研究比较了吸水回弹与吸气回弹对试验结果的影响,结果表明,吸水和吸气对回弹的影响不大。2研究探讨了变Cv固结/回弹计算方法,进行了两种重塑土的加卸荷循环全过程比对和两种原状土卸荷全过程比对,理论计算与试验吻合很好,证实了变Cv变形过程计算方法用于固结/回弹变形计算的科学性与合理性,证明回弹是固结的逆过程。
[Abstract]:In this paper, two aspects of research are mainly carried out, and the rebound test of the soil is carried out at 1: 1. Two kinds of soil samples were prepared and the cyclic test of loading and unloading was carried out. The variation of consolidation coefficient and springback coefficient in the process of test is studied by experiment. The experimental results show that the consolidation coefficient and the springback coefficient are not a fixed constant, but a process factor which takes the loading and unloading process as the periodic cyclic repeated change. The effects of water absorption springback and inspiratory springback on the experimental results are compared. The results show that the effects of water absorption and suction on springback are not significant. 2. The calculation method of variable CV consolidation / springback is discussed. Two kinds of remolded soils are compared in the whole process of loading and unloading cycle and in two undisturbed soils. The theoretical calculation is in good agreement with the experiment. It is proved that the calculation method of variable CV deformation process is scientific and reasonable for the calculation of consolidation / springback deformation, and that springback is the inverse process of consolidation.
【作者单位】：南京水利科学研究院;
【基金】：国家自然科学基金项目(51379132)
【分类号】：TU411

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