{"title":"A state surface model of unsaturated soil considering thermal and adsorptive effects","authors":"","doi":"10.1016/j.compgeo.2024.106869","DOIUrl":null,"url":null,"abstract":"<div><div>Constructing soil water retention curve model involving thermal, mechanical, and hydraulic hysteresis is essential for accurately predicting the retention characteristics of unsaturated soils under complicated conditions. A novel model depicting the retention of capillary and adsorbed water under the impact of thermal, mechanical, and hydraulic hysteresis, has been proposed. In which, the variations of void ratio-dependent capillary water have been captured based on the incremental relationship of a three-phase porous material and an empirical relationship. The impact of temperature has been described by incorporating two distinct non-isothermal functions for the matric suctions of capillary and adsorbed water. The disparity in soil water retention curves under drying and wetting branches is illustrated by leveraging the combined effect of contact angle and entrapped air. The comparisons between the predicted and measured results showed that the new model can reasonable predict the retention behaviors of unsaturated soils under different temperature, void ratio, and drying-wetting cycles.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computers and Geotechnics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0266352X24008085","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
Constructing soil water retention curve model involving thermal, mechanical, and hydraulic hysteresis is essential for accurately predicting the retention characteristics of unsaturated soils under complicated conditions. A novel model depicting the retention of capillary and adsorbed water under the impact of thermal, mechanical, and hydraulic hysteresis, has been proposed. In which, the variations of void ratio-dependent capillary water have been captured based on the incremental relationship of a three-phase porous material and an empirical relationship. The impact of temperature has been described by incorporating two distinct non-isothermal functions for the matric suctions of capillary and adsorbed water. The disparity in soil water retention curves under drying and wetting branches is illustrated by leveraging the combined effect of contact angle and entrapped air. The comparisons between the predicted and measured results showed that the new model can reasonable predict the retention behaviors of unsaturated soils under different temperature, void ratio, and drying-wetting cycles.
期刊介绍:
The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.