A gradation-dependent hypoplastic model for crushable sands

IF 5.6 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Acta Geotechnica Pub Date : 2024-07-27 DOI:10.1007/s11440-024-02372-2

Yaolan Tang, Shun Wang, Chunshun Zhang

引用次数: 0

Abstract

A gradation-dependent hypoplastic model is developed to capture the mechanical behaviours of crushable sands. First, a gradation evolution law is proposed to describe the variation of the grain size distribution (GSD) and the development of the extent of crushing during the loading process. Second, the family of CSLs under different gradations is formulated. Combining the developed CSL function and GSD evolution leads to well-modelling the unique critical state features of crushable sands. Subsequently, critical state features are incorporated into a well-established hypoplastic framework, such that the gradation-dependent hypoplastic model for crushable sands is developed. The accuracy and efficiency of the developed hypoplastic model in capturing the mechanical behaviours of crushable sands are validated against experimental counterparts.

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可碾压砂的分级次塑性模型

为捕捉可破碎砂的力学行为，我们开发了一种与级配相关的次塑性模型。首先，提出了一种级配演变规律，用于描述加载过程中粒度分布（GSD）的变化和破碎程度的发展。其次，提出了不同级配条件下的 CSL 系列。将所开发的 CSL 函数与 GSD 演化相结合，可以很好地模拟可破碎砂的独特临界状态特征。随后，临界状态特征被纳入到一个成熟的次塑性框架中，从而建立了与级配相关的可破碎砂次塑性模型。所开发的次塑性模型在捕捉可碾压砂的机械行为方面的准确性和效率得到了相应实验的验证。

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

Acta Geotechnica ENGINEERING, GEOLOGICAL-

CiteScore

9.90

自引率

17.50%

发文量

297

审稿时长

4 months

期刊介绍： Acta Geotechnica is an international journal devoted to the publication and dissemination of basic and applied research in geoengineering – an interdisciplinary field dealing with geomaterials such as soils and rocks. Coverage emphasizes the interplay between geomechanical models and their engineering applications. The journal presents original research papers on fundamental concepts in geomechanics and their novel applications in geoengineering based on experimental, analytical and/or numerical approaches. The main purpose of the journal is to foster understanding of the fundamental mechanisms behind the phenomena and processes in geomaterials, from kilometer-scale problems as they occur in geoscience, and down to the nano-scale, with their potential impact on geoengineering. The journal strives to report and archive progress in the field in a timely manner, presenting research papers, review articles, short notes and letters to the editors.