Centrifuge modelling of earthquake-induced liquefaction on footings built on improved ground

Marques, Asps; Coelho, Palf; Haigh, Stuart; Madabhushi, Gopal

doi:10.1201/9780429438646-35

Cited by 1 publication

(3 citation statements)

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“…This phenomenon can be attributed to the Bhuj earthquake in 2001, which exhibited significant fluctuations in acceleration magnitude during this precise time interval. Interestingly, the observed trends from current study closely parallel those encountered in the investigation conducted by Marques et al (2012). In the centrifuge test, the duration of acceleration spanned approximately 35 seconds, during which the acceleration decreased from 0.3g to 0g on average.…”

Section: Validation Of the Simulation Analysissupporting

confidence: 85%

“…The primary goal of this study was to meticulously validate observed patterns in real-world data concerning the impact of shallow foundations on liquefaction-induced phenomena within susceptible soil deposits. To achieve this, the investigation drew insights from insightful centrifuge experiments conducted by Marques et al (2012). These pioneering tests delved into the intricate behaviour of shallow foundations on substrates encompassing both liquefiable and non-liquefiable (densified) rock layers.…”

Section: Validation Of the Simulation Analysismentioning

confidence: 99%

“…In-situ tests include the Standard Penetration Test (SPT), seismic reflection test, and other seismic tests. Model test experiments involve shaking tables and centrifuge tests (Marques et al, 2012). Additionally, several software programs are now available to predict soil behaviour during earthquakes efficiently, facilitated by advancements in computer technology (Mehrzad et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Liquefaction on shallow foundations during 2001 Bhuj earthquake at Kutch (Gujarat), India

Amin,

Singh

2023

Preprint

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Liquefaction, the temporary loss of strength in saturated sand causing it to behave like a liquid, leads to devastating consequences, including the settling, tilting, or collapsing of structures built on loose, saturated soil. The 2001 Bhuj earthquake witnessed extensive liquefaction in regions such as the Great Rann of Kutch, Banni Plains, Kandla, and Gulf of Kutch, resulting in substantial damage to various infrastructures, including bridges, docks, buildings, embankments, and dams. This study employs a finite element approach to analyse the behaviour of shallow foundations on liquefying subsoil in Kutch during the 2021 earthquake. The investigation focuses on ring footings with inner radii of 0.25 m, 0.5 m, and 0.75 m, as well as an outer radius of 1 m, alongside a circular foundation with a 1 m radius. Notably, the ring footing with a radius ratio of 0.5 exhibits the least settlement under static loads, underscoring that liquefaction-induced settlement for ring footings is significantly less than that for circular footings.

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Section: Validation Of the Simulation Analysissupporting

confidence: 85%

Section: Validation Of the Simulation Analysismentioning

confidence: 99%