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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Characterizing the process of liquefaction initiation in Anzali shore sand through critical state soil mechanics
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Characterizing the process of liquefaction initiation in Anzali shore sand through critical state soil mechanics

机译：通过临界状态土壤力学表征安扎里岸砂液化引发过程

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A series of monotonic drained and cyclic undrained triaxial tests were conducted to study the cyclic behavior of a shore sand mainly formed of silica and carbonate, under critical state soil mechanics framework. The main focus of the study was on simplifying the process of approaching to liquefaction, and predicting it using the concept of "state". The results indicated that generation of pore water pressure from the start of cycling to liquefaction can be simplified into a bilinear-shaped trend in a semi-logarithmic space. The pore pressure response, the number of cycles needed for liquefaction and the cyclic resistance ratio were shown to depend on the initial state relative to the critical state line in space of specific volume against logarithm of mean effective stress. Analysis of the results also indicated that the bilinear trend of approaching to liquefaction and the liquefaction resistance of the soil with various densities and stress levels could be well characterized in terms of the state parameter and the cyclic stress ratio, using logarithmic, exponential and quadratic formulations. Liquefaction curves were derived in terms of the state parameter, independent of soil density and stress level. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在临界状态土壤力学框架下，进行了一系列单调排水和循环不排水三轴试验，以研究主要由二氧化硅和碳酸盐形成的岸砂的循环行为。该研究的主要重点是简化液化过程，并使用“状态”概念对其进行预测。结果表明，在半对数空间中，从循环开始到液化的孔隙水压力的产生可以简化为双线性趋势。相对于平均有效应力的对数，孔隙压力响应，液化所需的循环次数和循环阻力比显示为相对于临界状态线的初始状态，该初始状态相对于临界状态线。对结果的分析还表明，使用对数，指数和二次公式，可以通过状态参数和循环应力比，很好地刻画各种密度和应力水平下接近液化的双线性趋势和抗液化性能。 。液化曲线是根据状态参数得出的，与土壤密度和应力水平无关。 （C）2015 Elsevier Ltd.保留所有权利。

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