Effect of inherent anisotropy of granular materials on the active and passive arching effect

IF 2.9 3区工程技术

Granular Matter Pub Date : 2025-06-18 DOI:10.1007/s10035-025-01547-2

Mingzhe Zhou, Haiying Fu, Junnan Ren, Yanyan Zhao

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Abstract

This paper analyzed the influence of the inherent anisotropy of sand on active and passive arching by simulating the trapdoor emplying the discrete element method (DEM). The inherent anisotropy is reflected by the bedding plane angle α of particles. The granular material constitutive responses are captured on representative volume elements (RVEs). A new modeling method is employed to prepare particle specimens, aiming to obtain a more uniform soil model. The results indicate that the discrete element method can simulate the influence of the inherent anisotropy of granular material on the evolution of soil arching. An asymmetric arching evolution phenomena is observed in the α other than 0° or 90° cases, which leads to obvious asymmetric deformation and stress distribution in the soil. As the filling height increases, this phenomenon becomes more and more obvious. From a microscopic perspective, the reorientation of the contact normal fabric caused by particle rotation is the main reason for the differences in soil arching evolution with different α. This study provides a theoretical basis for predicting ground deformation failure caused by underground engineering activities and changes in surrounding environmental conditions.

Graphical Abstract

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颗粒材料固有各向异性对主动和被动拱效应的影响

本文采用离散元法（DEM）模拟活板门，分析了砂土固有各向异性对主动拱和被动拱的影响。颗粒的层理面角α反映了其固有的各向异性。在代表性体积单元（RVEs）上捕获颗粒材料的本构响应。为了获得更均匀的土体模型，采用了一种新的建模方法来制备颗粒试样。结果表明，离散元法可以模拟颗粒材料固有各向异性对土拱演化的影响。除0°和90°外，在α方向上存在不对称拱形演化现象，导致土体变形和应力分布明显不对称。随着充填高度的增加，这种现象越来越明显。从微观角度看，颗粒旋转引起的接触法向织物的重新定向是不同α条件下土拱演化差异的主要原因。该研究为地下工程活动和周围环境条件变化引起的地面变形破坏预测提供了理论依据。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.