Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)

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Liquefaction Evaluation of Saturated Sandy Foundations with Weak Impermeable Layers

Authors
Junpeng Dong1, Xinlei Zhang1, 2, Xu Feng1, Zhanpeng Ji1, Zhihua Wang1, 2, *, Hongmei Gao1, 2, Mengting Gao1
1Research Center of Urban Underground Space, Nanjing Tech University, Nanjing, 211816, China
2Jiangsu Province Engineering Research Center of Transportation Infrastructure Security Technology, Nanjing, 211816, China
*Corresponding author. Email: wzhnjut@163.com
Corresponding Author
Zhihua Wang
Available Online 19 May 2025.
DOI
10.2991/978-94-6463-728-1_28How to use a DOI?
Keywords
geotechnical engineering; weak impermeable layer; interbedded soil sites; liquefaction; shaking table test
Abstract

A series of shaking table tests were conducted to investigate the dynamic response characteristics of saturated sand soil sites with weak impermeable layers. The results revealed that the weak impermeable layer had different effects on the dynamic response of interbedded soil sites and intercalated soil sites. The thin impermeable layer in interbedded sites functions as a barrier to the vertical seepage pathway of pore water, thereby establishing a “water interlayer” beneath it. The presence of the “water interlayer” results in an increased lateral displacement of the soil at the interface with the impermeable layer, thereby significantly enhancing the capacity for energy dissipation. The presence of a thick impermeable layer, in contrast, effectively mitigates excess pore water pressure development in saturated sand, thereby significantly improving the soil’s liquefaction resistance. When evaluating seismic risk in saturated sandy sites with weak impermeable layers, it is essential to consider the significant lateral displacements induced by the “water interlayer.”

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)
Series
Advances in Engineering Research
Publication Date
19 May 2025
ISBN
978-94-6463-728-1
ISSN
2352-5401
DOI
10.2991/978-94-6463-728-1_28How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Junpeng Dong
AU  - Xinlei Zhang
AU  - Xu Feng
AU  - Zhanpeng Ji
AU  - Zhihua Wang
AU  - Hongmei Gao
AU  - Mengting Gao
PY  - 2025
DA  - 2025/05/19
TI  - Liquefaction Evaluation of Saturated Sandy Foundations with Weak Impermeable Layers
BT  - Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)
PB  - Atlantis Press
SP  - 273
EP  - 284
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-728-1_28
DO  - 10.2991/978-94-6463-728-1_28
ID  - Dong2025
ER  -