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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：压实曲线建模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 whichwere 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 (R~2 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-consohdation stress. Huge differences in the initial void ratio values (Ae ranging between 0.003 and 0.423) have been observed with different curve models and with which a huge difference in pre-consolidation stresses (triangle openF 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。对于广泛的外加应力（0至2500 kPa），包括小于预固结应力的应力，已经验证了与数据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了初始空隙率值的巨大差异（Ae在0.003和0.423之间），并且在预固结应力方面也观察到了巨大的差异（三角形openF在0和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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