How do granular columns affect the seismic performance of non-uniform liquefiable sites and their overlying structures?

Badanagki, Mahir; Dashti, Shideh; Paramasivam, Balaji; Tiznado, Juan Carlos

doi:10.1016/j.soildyn.2019.105715

Cited by 20 publications

(2 citation statements)

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“…Badanagki vd. [8] taş kolonların farklı özellikteki katmanlardan oluşan zeminlerdeki sismik performansını incelemek için 6 adet santrifüj testi yapmışlardır. Çalışma sonunda sıvılaşabilir zemin kalınlığının zeminin tamamının sıvılaşma potansiyelini etkilediği, taş kolonlarla iyileştirilen zeminlerde oturmaların ve yanal deformasyonların azaldığı sonucuna varmışlardır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Taş Kolon Performanslarının Hipoplastik Model ile Analizi

et al. 2021

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Section: Gi̇ri̇ş (Introduction)unclassified

Taş Kolon Performanslarının Hipoplastik Model ile Analizi

et al. 2021

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“…Over the past few decades, dense granular columns (DGC) have become a common soil improvement strategy for critical geo-structures founded on potentially liquefiable deposits (Adalier and Elgamal 2004). Case histories from previous earthquakes using DGCs as a liquefaction counter-measure (Hausler 2002;Nikolaou et al 2016) as well as previous experimental and numerical studies (e.g., Elgamal et al 2009;Asgari et al 2013;Rayamajhi et al 2014;Badanagki et al 2018;Badanagki et al 2019;Tiznado et al 2020), have generally shown DGCs to be effective in mitigating the consequences of soil liquefaction.…”

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confidence: 99%

Performance of embankments on liquefiable soil deposits improved with with dense granular columns

Aitken¹

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Past earthquakes have shown that dense granular columns (DGC) can help improve the seismic performance of critical geotechnical structures founded on liquefiable soil deposits through a combination of (i) installation-induced densification, (ii) enhanced drainage, and (iii) shear reinforcement; even at relatively low area replacement ratios. However, the independent influence and contribution of these mitigation mechanisms on engineering demand parameters of interest in design (e.g., excess pore water pressures, shear stresses and strains, accelerations, and permanent deformations) are not yet well understood in the context of liquefaction triggering and committee for their valuable feedback and comments throughout the course of this project:

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