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Coupled Hydromechanical Behavior of Compacted Loess during Isotropic Compression

文献类型：期刊论文

作者Zhang, Ziran1,6; Fu, Yukai1,6; Zhou, Annan5; Hou, Xiaokun4; Zhang, Maosheng3; Fan, Zhongjie2
刊名INTERNATIONAL JOURNAL OF GEOMECHANICS
出版日期2023-10-01
卷号23期号:10页码:12
关键词Coupled hydromechanical behavior Compacted loess Soil-water characteristics Volume change Isotropic compression
ISSN号1532-3641
DOI10.1061/IJGNAI.GMENG-8500
英文摘要Compacted loess is a special collapsible unsaturated soil and is sensitive to hydraulic conditions. Understanding and modeling the coupled hydromechanical behavior of compacted loess during isotropic compression is essential for establishing a complete constitutive model for unsaturated soils, which is of significance for predicting the deformation of loess fills in engineering. In this research, a series of constant suction isotropic compression tests are conducted to study the behavior of compacted loess. The experimental results show that volume change and soil-water characteristics are mutually affected during compression and that the normal compression curves flatten out and shift downward with the decrease in suction. Based on the experimental observations, the normal compression surface is modified, and the loading-collapse yield curve is deduced for the compacted loess. An equation associated with the void ratio is used to describe the effect of the volume change on the soil-water characteristics. Furthermore, a coupled hydromechanical constitutive model for the compacted loess under isotropic compression conditions is proposed within the framework of the Barcelona basic model. Model predictions of the mechanical and hydraulic behaviors of the compacted loess for constant suction isotropic compression tests and wetting tests at constant net stresses are compared with experimental data to verify the performance and validation of the proposed model. The comparisons indicate that the proposed model can accurately reproduce the coupled hydromechanical behavior of the compacted loess under isotropic compression conditions.
WOS关键词WETTING-INDUCED COLLAPSE ; UNSATURATED SOIL ; VOLUME CHANGE ; CONSTITUTIVE MODEL ; STRESS ; SATURATION ; DEFORMATION ; OEDOMETER ; DENSITY ; CHINA
WOS研究方向Engineering
语种英语
WOS记录号WOS:001049154700011
出版者ASCE-AMER SOC CIVIL ENGINEERS
源URL[http://ir.iggcas.ac.cn/handle/132A11/111397]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Fu, Yukai
作者单位1.Changan Univ, Xian 710054, Peoples R China
2.Changjiang River Sci Res Inst Changjiang Water Re, Wuhan 430010, Peoples R China
3.Xi An Jiao Tong Univ, Xian 710049, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
5.RMIT Univ, Sch Engn, Royal Melbourne Inst Technol, Melbourne, Vic 3001, Australia
6.Minist Educ, Water Cycle & Geol Environm Observat & Res Stn Ch, Zhengning 745399, Gansu, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Ziran,Fu, Yukai,Zhou, Annan,et al. Coupled Hydromechanical Behavior of Compacted Loess during Isotropic Compression[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2023,23(10):12.
APA Zhang, Ziran,Fu, Yukai,Zhou, Annan,Hou, Xiaokun,Zhang, Maosheng,&Fan, Zhongjie.(2023).Coupled Hydromechanical Behavior of Compacted Loess during Isotropic Compression.INTERNATIONAL JOURNAL OF GEOMECHANICS,23(10),12.
MLA Zhang, Ziran,et al."Coupled Hydromechanical Behavior of Compacted Loess during Isotropic Compression".INTERNATIONAL JOURNAL OF GEOMECHANICS 23.10(2023):12.

入库方式： OAI收割

来源：地质与地球物理研究所

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