An Integrated Assessment of Liquefaction Susceptibility in Reclaimed Ground Overlying Soft Coastal Soils Using Multiple In-Situ Penetration Tests
DOI:
https://doi.org/10.64862/ajeg.2025.2sp.05.054Keywords:
Liquefaction, Soft coastal soil, Reclaimed ground, Penetration testsAbstract
This study investigates liquefaction potential in reclaimed coastal grounds underlain by soft alluvial soils through an integrated geotechnical approach. Due to low shear strength and high compressibility, these soils present serious stability risks during seismic events. Traditional methods, which rely on single-test data, may overlook complex subsurface conditions. Therefore, a combination of SPT, CPTu, Seismic Downhole (shear wave velocity, Vs), and pressure meter (PMT) tests were utilized to comprehensively evaluate the liquefaction risk. Factor of Safety (FS) and Liquefaction Potential Index (LPI) maps were developed, and ground improvement techniques like PVD-aided surcharge, dynamic compaction, and deep mixing were also assessed. The integrated method improves accuracy in liquefaction prediction and informs coastal infrastructure planning in seismically active zones.
References
Bangladesh National Building Code. (2020). BNBC 2020: Bangladesh National Building Code. Available at: https://mccibd.org/wp-content/uploads/2021/09/Bangladesh-National-Building-Code-2020.pdf
Boulanger, R. W., and Idriss, I. M. (2014). CPT and SPT based liquefaction triggering procedures (Report No. UCD/CGM-14/01, pp. 1–134). Center for Geotechnical Modeling, University of California, Davis. Available at: https://www.ce.memphis.edu/7137/PDFs/Notes/i3Boulanger_Idriss_CPT_and_SPT_Liq_triggering_CGM-14-01_20141.pdf
Idriss, I. M., and Boulanger, R. W. (2008). Soil liquefaction during earthquakes. Earthquake Engineering Research Institute. Available at: https://istasazeh-co.com/wp-content/uploads/2023/02/Soil-Liquefaction-During-Earthquakes-M.-Idriss-and-Ross-W.-Boulanger.pdf
Youd, T. L., and Idriss, I. M. (2001). Liquefaction resistance of soils: Summary report from the 1996 NCEER and 1998 NCEER/NSF workshops on evaluation of liquefaction resistance of soils. Journal of Geotechnical and Geoenvironmental Engineering, 127(4), 297–313. https://doi.org/10.1061/(ASCE)1090-0241(2001)127:4(297)
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