Estimation of the wetting induced settlement of loess soils from the wetting soil-water characteristic curve
Li C. Chen Y. Xiang K. Dai G. Gong W. Yang S. Satyanaga A. Chua Y.S. Gao P. Zhai Q.
December 2024Nature Research
Scientific Reports
2024#14Issue 1
Collapsible loess soils, known for their significant volume reduction upon the wetting, pose critical challenges in the geotechnical engineering. The estimation of the wetting-induced settlement is crucial for the foundation design and the determination of the negative skin friction on the pile. In this paper, a new method is proposed to estimate the wetting induced collapse from the wetting soil-water characteristic curve (SWCC) and the index properties of the loess soils. In the proposed model, both the water-entry value (WEV) and constant water content suction (ψwc) were adopted for the quantification of the volume change with respect to the reduction in soil suction. The proposed method is verified against the experimental data from published literature. Subsequently, the ground settlement of the loess soil in the inundated condition was calculated by adopting the proposed method and comparing the results with the field measurement data. The results of study indicated that the performance of the proposed method is better than the conventional method in predicting the ground settlement by using the local code in China.
Collapsible loess , settlement prediction , soil-water characteristic curve , wetting-induced collapse
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China Construction Eighth Engineering Division Corp. Ltd, Nanjing, China
School of Civil Engineering, Southeast University, Nanjing, 211189, China
Advanced Ocean institute of Southeast University, Southeast University, Jiangsu, Nantong, 226010, China
China Railway First Survey and Design Institute Group Co., Ltd, Xi’an, 710043, China
Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, Nur-Sultan, 010000, Kazakhstan
Research Center of Environmental Technology and Innovation, Study Program of Environmental Engineering, Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya, 60115, Indonesia
Hocklim Engineering Pte Ltd, Singapore, Singapore
Jiangsu Jianyan Construction Engineering Quality and Safety Appraisal Co., Ltd, Nanjing, China
China Construction Eighth Engineering Division Corp. Ltd
School of Civil Engineering
Advanced Ocean institute of Southeast University
China Railway First Survey and Design Institute Group Co.
Department of Civil and Environmental Enginering
Research Center of Environmental Technology and Innovation
Hocklim Engineering Pte Ltd
Jiangsu Jianyan Construction Engineering Quality and Safety Appraisal Co.
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