Experimental design for dynamic centrifuge tests on a subway station structure in liquefied interlayer site

ZHANG Zi-hong; XU Cheng-shun; YAN Guan-yu; DU Xiu-li; LI Yang; ZHOU Yan-guo

doi:10.11779/CJGE202205011

Volume 44 Issue 5

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Chinese Journal of Geotechnical Engineering > 2022 > 44(5): 879-888. > DOI: 10.11779/CJGE202205011

ZHANG Zi-hong, XU Cheng-shun, YAN Guan-yu, DU Xiu-li, LI Yang, ZHOU Yan-guo. Experimental design for dynamic centrifuge tests on a subway station structure in liquefied interlayer site[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(5): 879-888. DOI: 10.11779/CJGE202205011

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Experimental design for dynamic centrifuge tests on a subway station structure in liquefied interlayer site

1.
Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China
2.
China Academy of Railway Sciences Corporation Limited, Urban Rail Train Center of CARS, Beijing 100081, China
3.
Key Laboratory of Soft Soils and Geoenviromental Engineering, Zhejiang University, Hangzhou 310058, China

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Received Date: June 30, 2021
Available Online: September 22, 2022

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Abstract

Abstract

To study the earthquake damage response of a subway station structure in a liquefied interlayer site, a series of dynamic centrifuge tests are carried out using the ZJU400 geotechnical centrifuge facility in Zhejiang University. The test scheme and the process of carrying out the tests are introduced. At the same time, in view of the current situation that there is no precedent for a reference for the preparation of the liquefied interlayer site, many technical details are elaborated, including the preparation of liquefied interlayer site (clay consolidation, sand saturation and assembly of interlayer site), structural waterproof treatment, and releasing initial pore pressure in the sand layer during centrifugal loading. The tests obtain ideal results, thus achieving the experimental goal of studying the earthquake damage response of the subway station structure in the liquefied interlayer site. The introduction to the design process of this test scheme may provide some references for the similar tests in the future.
- liquefied interlayer site,
- subway station structure,
- earthquake damage response,
- testing technology,
- experimental design

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References

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