Liquefaction susceptibility and re-liquefaction potential of the liquefied soil site caused due to Mw 5.7 Tripura earthquake

Mog, K and Anbazhagan, P (2024) Liquefaction susceptibility and re-liquefaction potential of the liquefied soil site caused due to Mw 5.7 Tripura earthquake. In: Sadhana - Academy Proceedings in Engineering Sciences, 49 (4).

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Abstract

On January 3, 2017, an earthquake measuring Mw 5.7 struck 19 km east of Ambassa in Tripura, India, leading to soil liquefaction, lateral spreading, and landslides in the epicentral area. This paper presents the results of comprehensive field investigations of liquefied soil sites following the 2017 Tripura earthquake. The study involved conducting Standard Penetration Test (SPT) and Multichannel Analysis of Surface Wave (MASW) tests to evaluate the penetration resistance and shear wave velocity (Vs) profile of the sites. These data were subsequently utilized to determine the liquefaction potential index (LPI). Results from the field tests revealed low SPT N, low Vs, and high LPI values at shallow depth, indicating the presence of thick and loose soil layers at the site. This study is particularly valuable to the earthquake engineering community, as there are limited available case histories documenting in-situ soil properties at liquefaction sites triggered by earthquakes below magnitude 6. © Indian Academy of Sciences 2024.

Item Type:	Journal Article
Publication:	Sadhana - Academy Proceedings in Engineering Sciences
Publisher:	Springer
Additional Information:	The copyright for this article belongs to the Publisher.
Keywords:	Earthquake effects; Shear waves; Soil liquefaction; Soil testing, Liquefaction and re-liquefaction; Liquefaction potential index; Moment magnitudes; Multi-channel analysis of surface waves; Multichannel analyze of surface wave; Standard penetration test; Standard-penetration-test; Tripurum earthquake, Shear flow
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	26 Nov 2024 12:30
Last Modified:	26 Nov 2024 12:30
URI:	http://eprints.iisc.ac.in/id/eprint/86935

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