Simplified approach for liquefaction assessment in granular soils: integrating bulk and grain properties

IF 2.9 3区工程技术

Granular Matter Pub Date : 2025-05-21 DOI:10.1007/s10035-025-01529-4

Mujeeb Ul Rehman, Ramesh Kannan Kandasami, Subhadeep Banerjee

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引用次数: 0

Abstract

Particle characteristics (particle shape and size), along with relative density, significantly influence the frictional characteristics and liquefaction behavior of granular materials, particularly sand. While many studies have examined the individual effects of particle shape, gradation, and relative density on the frictional characteristics and liquefaction behavior of sand, they have often overlooked the combined effects of these soil parameters. In this study, the individual effect of these three soil parameters on the strength characteristics (angle of internal friction) and liquefaction resistance has been quantified by analyzing the data available in the literature. A novel dimensionless parameter, the ‘packing index (\(\alpha \)),’ was developed to account for the bulk characteristics (relative density - RD) and grain properties (gradation, represented by the coefficient of uniformity (\(C_u\)), and particle shape represented by the shape descriptor regularity (\(\rho \))) of the granular soils. Through statistical analysis, a power law-based equation was proposed and validated to relate the cyclic resistance ratio (CRR) and angle of internal friction (\(\phi \)) with the packing index. Finally, an approach to assess the liquefaction resistance was detailed considering the intrinsic soil parameters, aiming to bridge the gap between field observations and laboratory analysis to facilitate a comprehensive understanding of soil behavior under cyclic loading.

Graphical abstract

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颗粒土液化评价的简化方法：体积和颗粒性质的综合

颗粒特性（颗粒形状和大小）以及相对密度显著影响颗粒材料，特别是砂的摩擦特性和液化行为。虽然许多研究都考察了颗粒形状、等级和相对密度对砂的摩擦特性和液化行为的单独影响，但它们往往忽略了这些土壤参数的综合影响。在本研究中，通过分析文献数据，量化了这三个土壤参数对强度特性（内摩擦角）和液化阻力的个别影响。开发了一种新的无量纲参数“堆积指数（\(\alpha \)）”，用于考虑颗粒土的体积特征（相对密度- RD）和颗粒特性（均匀系数表示的级配（\(C_u\)）和形状描述符规则表示的颗粒形状（\(\rho \)））。通过统计分析，提出并验证了循环阻力比（CRR）和内摩擦角（\(\phi \)）与填料指数之间的幂律方程。最后，详细介绍了考虑土壤固有参数的液化抗力评估方法，旨在弥合现场观测与实验室分析之间的差距，以促进对循环荷载下土壤行为的全面理解。图形摘要

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来源期刊

Granular Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-MECHANICS

CiteScore

4.30

自引率

8.30%

发文量

期刊介绍： Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science. These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations. >> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa. The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.