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| Numerical simulation of water film formation in saturated sand soils with weak permeability interlayers after liquefaction |
| WANG Binghui, WEI Wenhao, JIN Dandan, XU Shuai, ZHANG Lei |
| 1. School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China; 2. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract To investigate the influence of water film produced by the liquefaction of saturated sand with weak permeability on the distribution of sand strength and deformation index, the onedimensional finite difference model of liquefied water film in saturated sand was established to simulate the formation mechanism, development and dissipation process of water film in the liquefaction process of saturated sand with weak permeability fine sand, and the relationship between the water film and the characteristic parameters of soil layer for especially the interlayer. The results show that there is obvious plateau stage in the process of excess pore water pressure dissipation, and the starting and ending points have good relationship with the formation of the maximum thickness and disappearance of the water film. The formation and development of water film is closely related to the duration of high pore pressure. In the case of weak permeability interlayer, the water film is produced under the interlayer, and the duration of high pore pressure application in saturated sand is significantly longer than that without interlayer, which has adverse effect on soil deformation. The rationality of the model is verified by comparing with the experimental results.
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| ［1］ |
SEED H B. Design problems in soil liquefaction[J]. Journal of Geotechnical Engineering, 1987,113(8):827-845.
|
| ［2］ |
SHEN Z J. Dynamically coupled percolation and deformation analysis of earth dams[C]∥First International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. Missouri, USA:[s. n.], 1981:389-394.
|
| ［3］ |
JIBSON R W, PRENTICE C S, BORISSOFF B A, et al. Some observations of landslides triggered by the 29 April 1991 Racha earthquake, Republic of Georgia[J]. Bulletin of the Seismological Society of America, 1994,84(4):963-973.
|
| ［4］ |
BERRILL J B, CHRISTENSEN S A, KEENAN R J, et al. Lateralspreading loads on a piled bridge foundation[M]∥ SCO EPINTO P S. Seismic Behavior of Ground and Geotechnical Structures： Special Volume of TC 4. 1st ed. London: CRC Press, 1997:173-183.
|
| ［5］ |
KOKUSHO T, FUJITA K. Site investigations for involvement of water films in lateral flow in liquefied ground[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2002,128(11):917-925.
|
| ［6］ |
KOKUSHO T, KOJIMA T. Mechanism for postliquefaction water film generation in layered sand[J]. Journal of Geotechnical & Geoenvironmental Engineering, 2002,128(2):129-137.
|
| ［7］ |
TOHUMCU ZENER P, ZAYDIN K, BERILGEN M M. Investigation of liquefaction and pore water pressure development in layered sands[J]. Bulletin of Earthquake Engineering, 2009,7(1):199-219.
|
| ［8］ |
ROHIT D, PASHA S M K, HAZARIKA H, et al. Influence of low permeability capping layers on liquefaction induced failure in stratified ground[J]. Lecture Notes in Civil Engineering, 2021,138:343-355.
|
| ［9］ |
FIEGEL G L, KUTTER B L. Liquefaction mechanism for layered soils[J]. Journal of Geotechnical Engineering, 1994,120(4):737-755.
|
| ［10］ |
KOKUSHO T. Water film in liquefied sand and its effect on lateral spread[J]. Journal of Geotechnical & Geoenvironmental Engineering, 1999,125(10):817-826.
|
| ［11］ |
赵颜辉,朱俊高,张宗亮,等. 无黏性土压缩曲线的一种数学模式[J]. 岩土力学, 2011,32(10):3033-3037,3042.
|
|
ZHAO Y H, ZHU J G, ZHANG Z L, et al. A compression model for cohesionless soils[J]. Rock and Soil Mechanics, 2011,32(10):3033-3037,3042.（in Chinese）
|
| ［12］ |
汪闻韶. 土的液化机理[J]. 水利学报, 1981(5):22-34.
|
|
WANG W S. Mechanism of soil liquefaction[J]. Journal of Hydraulic Engineering, 1981(5):22-34.（in Chinese）
|
| ［13］ |
仇畅，于龙杰，钱锦远，等. 套筒式蒸汽疏水阀多工况下的空化及噪声分析［J］. 排灌机械工程学报, 2023, 41(3): 281-287.
|
|
QIU C, YU L J, QIAN J Y, et al. Cavitation and acoustic analysis of sleeve steam trap under multiple working conditions［J］. Journal of Drainage and Irrigation Machinery Engineering, 2023,41(3):281-287.(in Chinese)
|
| ［14］ |
ZEYBEK A, MADABHUSHI G S P. Assessment of soil parameters during postliquefaction reconsolidation of loose sand[J]. Soil Dynamics and Earthquake Engineering, DOI: 10.1016/j.soildyn.2022.107611.
|
|
|
|
