Cyclic Response and Post-cyclic Settlement of Sand Experiencing Repeated Earthquakes

Le, Trung-Tri; Park, Sung-Sik; Woo, Seung-Wook; Tran, Lam Dai

doi:10.1007/978-981-16-7160-9_103

Cited by 7 publications

(2 citation statements)

References 16 publications

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“…Figures 20–27 show the comparisons between UBCSAND2 predictions and DSS laboratory data under both monotonic and cyclic loading. The data is obtained from tests conducted at the Kyungpook National University on Nakdong River sand 32,46,47 . The samples were reconstituted with the air‐pluviation method into loose ( D r = 40%) and dense ( D r = 80%) states.…”

Section: Calibrations Of Ubcsand2mentioning

confidence: 99%

Constitutive modeling of principal stress rotation associated with sand under simple shear loading

Park

Nong

Doan

2022

Num Anal Meth Geomechanics

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An elasto‐plastic constitutive model is proposed to account for the effect of principal stress rotation that commonly occurs and significantly influences soil behavior. The model is based on a concept of adding plastic strain increments obtained from two mobilized planes: a plane of maximum shear stress which swings as the principal stress rotates, and a horizontal plane which is spatially fixed. Models based on the plane of maximum shear stress alone are particularly sensitive to horizontal effective stress ratio K0 (=σ′x/σ′y), whereas the proposed model gives a similar skeleton behavior for soils at the same density and mean effective stress, regardless of the value of K0, as observed in laboratory tests. The model is firstly calibrated by data from drained and undrained monotonic and cyclic Direct Simple Shear (DSS) tests on K0‐consolidated specimens of Nakdong River sand in loose and dense states. The capability of the proposed model in modeling of the conventional liquefaction effects: initial shear stress condition α (=τ′xy/σ′y) with Kα corrections, and initial confining stress condition σ´y with Kσ corrections, is also emphasized in this paper.

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Section: Calibrations Of Ubcsand2mentioning

confidence: 99%

Constitutive modeling of principal stress rotation associated with sand under simple shear loading

Park

Nong

Doan

2022

Num Anal Meth Geomechanics

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“…Earthquake-induced liquefaction has been considered one of the primary hazards that lead to severe damage to soil-structures built on saturated deposits (Le et al, 2022a(Le et al, , 2022bNguyen et al, 2018Rahman et al, 2021). Liquefaction from recent earthquakes such as the 1994 Northridge, 1999Kocaeli, 1999Chi-Chi, 2005Kashmir, 2008Wenchuan, 2010Chile, 2010Newzealand, Tohoku 2011, was observed to result in many large deformations (i.e., settlement and horizontal displacements) leading to catastrophic damages to soil-structures built on the liquefied ground.…”

Section: Introductionmentioning

confidence: 99%

Liquefaction assessment using alternative approaches: a case study of Ho Chi Minh City stratigraphy

Doan

Nguyen

Doan

et al. 2023

Preprint

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Liquefaction has been known as a phenomenon in which the shear strength and stiffness of saturated soil are reduced by the generation of pore water pressure under earthquake loading. Consequently, liquefaction-induced settlement can result in severe damages including building cracks or slope failure, which pose a threat to human lives and properties. In the current Vietnamese standard TCVN 9386:2012, liquefaction potential hazard is often evaluated using the simplified method, which solely identifies the areas with a high risk of liquefaction. Prediction of Safety Factor (FS), Settlement (S), Liquefaction Potential Index (LPI), and Liquefaction Severity Number (LSN) has not received sufficient attention to a completeness standard. This study assesses the liquefaction of the ground at Ho Chi Minh City, Vietnam by using four conventional methods: the simplified procedure, linear equivalent analysis, loosely-coupled effective stress analysis, and fully-coupled effective stress analysis based on standard penetration test (SPT) data in Ho Chi Minh Metropolitan City. A class of seismic events that are compatible with the design response spectrum in the Vietnamese standard TCVN 9386:2012 is used as input ground motion at the bedrock. According to the results of different methods, maps of ground settlement, LPI, and LSN are proposed as useful references for construction works on such ground, which may have a high potential for liquefaction and subsidence.

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Prediction of Liquefaction-Induced Settlement Using Artificial Neural Network

Hoang,

Bui,

Phan

et al. 2024

Lecture Notes in Civil Engineering

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Cyclic Response and Post-cyclic Settlement of Sand Experiencing Repeated Earthquakes

Cited by 7 publications

References 16 publications

Constitutive modeling of principal stress rotation associated with sand under simple shear loading

Constitutive modeling of principal stress rotation associated with sand under simple shear loading

Liquefaction assessment using alternative approaches: a case study of Ho Chi Minh City stratigraphy

Prediction of Liquefaction-Induced Settlement Using Artificial Neural Network

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