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首页> 外文期刊>International journal of soil science >Influence of compaction curve modeling on void ratio and pre-consolidation stress.
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Influence of compaction curve modeling on void ratio and pre-consolidation stress.

机译：压实曲线模型对空隙率和预固结应力的影响。

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The objective of this study is to investigate the influence of different consolidation curve models on the initial void ratio values and through which on the obtained pre-consolidation stress. Further, this study verifies the dependence of pre-consolidation stress on the initial void ratio value measured at 1 kPa. This was done in order to check the trend between the consolidation curve models and the deviation in pre-consolidation stresses. Three different Oedometer tests have been carried out which were denoted as undisturbed, disturbed and disturbed-rewetted. The curves were fitted using two different curve models (Assouline and Van Genuchten models) and the graphical calculation of the pre-consolidation stress was done using two different methods (Casagrande and Silva methods). The curve models are applied on the compaction data obtained from the soil classified as loamy sand. A good consolidation curve fit to the data (R2 ranging between 0.97 and 0.99) has been verified for a wide range of applied stresses (0 to 2500 kPa), including stresses less than the pre-consolidation stress. Huge differences in the initial void ratio values ( Delta e ranging between 0.003 and 0.423) have been observed with different curve models and with which a huge difference in pre-consolidation stresses ( Delta P ranging between 0 and 57 kPa) have been observed. This study clearly showed that the pre-consolidation value obtained was mainly dependent on the curve fitting model and also on the calculating method. This study also showed a dependence of pre-consolidation stress over the void ratio measured at 1 kPa.
机译：这项研究的目的是研究不同固结曲线模型对初始空隙率值的影响，以及由此对获得的预固结应力的影响。此外，该研究验证了预固结应力对在1 kPa下测得的初始空隙率值的依赖性。这样做是为了检查固结曲线模型与预固结应力偏差之间的趋势。已进行了三种不同的里程表测试，分别表示为无扰动，受扰动和受扰动重新湿润。使用两个不同的曲线模型（Assouline和Van Genuchten模型）拟合曲线，并使用两种不同的方法（Casagrande和Silva方法）对预固结应力进行图形计算。将曲线模型应用于从分类为壤土砂土的压实数据中。在广泛的施加应力范围（0至2500 kPa）（包括小于固结前应力的应力）中，已经验证了拟合良好的固结曲线（R 2 在0.97至0.99之间）。 。在不同的曲线模型中，观察到初始空隙率值存在巨大差异（Δe在0.003至0.423之间），并且在预固结应力方面存在巨大差异（ΔP在0至57 kPa之间）。这项研究清楚地表明，所获得的预固结值主要取决于曲线拟合模型以及计算方法。这项研究还显示了预固结应力与在1 kPa下测得的空隙率之间的相关性。

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