EVALUATION OF LIQUEFACTION USING DISTURBED STATE AND ENERGY APPROACHES
EVALUATION OF LIQUEFACTION USING DISTURBED STATE AND ENERGY APPROACHES
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DOI：
10.1061/(asce)1090-0241(2000)126:7(618
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发表时间：
2000-07
影响因子：
3.9
通讯作者：
C. Desai
中科院分区：
文献类型：
--
作者：
C. Desai
扰动状态概念（DSC）和耗散能方法可以为识别循环和地震荷载作用下饱和土液化的发生和发展提供简化的、基本的和机理性的方法。这两种方法的开发和使用的分析在港口岛，科比，日本，在兵库县南部地震的土壤沉积物的液化。它们也被用来分析液化的两个砂在实验室循环试验中使用扭转和多轴装置。结果表明，DSC和能量标准可以导致更好地理解液化的机制，并合理和简化的程序相比，那些基于经验和指数属性。此外，DSC具有一定的优势，能量的方法，特别是在计算机（有限元）程序的动态和液化分析的实施。
The disturbed state concept (DSC) and the dissipated energy approach can provide simplified, fundamental, and mechanistic methods for the identification of the initiation and growth of liquefaction in saturated soils under cyclic and earthquake loading. Both approaches are developed and used for the analysis of liquefaction in the soil deposits at Port Island, Kobe, Japan, during the Hyogo-ken Nanbu earthquake. They are also used to analyze liquefaction of two sands during laboratory cyclic tests using torsional and multiaxial devices. It is shown that the DSC and energy criteria can lead to improved understanding of the mechanism of liquefaction, and to rational and simplified procedures compared to those based on empirical and index properties. Furthermore, the DSC possesses certain advantages over the energy approaches, particularly in terms of its implementation in computer (finite-element) programs for dynamic and liquefaction analysis.