Liquefaction Potential Variations Influenced by Building Constructions

Khatibi, Behnam Rahrou; Sutubadi, Mehdi Hosseinzadeh; Moradi, Gholam

doi:10.5539/esr.v1n2p23

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…The FLAC3D liquefaction models have been used to calculate site response in Wu et al ( 2013) [5] or Khatibi1 et al (2012) [6], and it shows the ability to produce excess pore-water pressure during earthquake excitation.…”

Section: Liquefiable Soil Model and Verificationmentioning

confidence: 99%

Seismic Analysis for Pile Foundations in the Liquefiable Soil Layer Using FLAC3D

2015

AMM

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Pile foundation is the practical method to enhance earthquake-resistant ability for structures located in liquefiable soil sites. Soil liquefaction impact has been occurred such as Kashiwazaki-Kariwa NPP in 2007 Chūetsu offshore earthquake because of the soft backfill soil. To understand the behavior of pile foundations in liquefied soil during earthquake attack and conform to nuclear standard, seismic analysis with soil-structure interaction considering liquefaction using the finite difference program FLAC3D is developed to renew the traditional method used in nuclear industry. The models are verified according to a series of centrifuge model test results conducted in National Central University, Taiwan, to show the accuracy of seismic response prediction, and it provides the more advanced tool to demonstrate the detail of seismic response so that the utility and authority can easily decide the disaster prevention strategy.

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Section: Liquefiable Soil Model and Verificationmentioning

confidence: 99%

Seismic Analysis for Pile Foundations in the Liquefiable Soil Layer Using FLAC3D

2015

AMM

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Nonlinear Dynamic Analysis Adopting Effective Stress Approach of an Embankment Involving Liquefaction Potential

Sengara

Sulaiman

2020

E3S Web Conf.

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Stability of an embankment under earthquake loads is challenging in the process of analysis and design. Some embankment design consist of saturated granular material that is potential to liquefaction. Earthquake loads to the embankment under this conditions is one of major cause of embankment failure. Seismic performance involving stress-deformations and excess-pore-water pressure was evaluated in this paper. The evaluation adopts effective stress approach with non-linear elasto-plastic constitutive model. Numerical simulations through parametric studies were performed to estimate minimum density and embankment height efficiently to tolerate lateral displacements due to liquefaction. A number of parametric analyses were performed to investigate the relationships among relative densities of sand, ground accelerations, embankment height to excess-pore-pressure and lateral displacement of the embankment. The liquefaction analysis is conducted numerically using a finite difference method FLAC Dynamic 2D software adopting Finn-Byrne constitutive model.

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Evaluation of Liquefaction Potential of a Coastal Region in Atakum

Ertek¹,

Demir²,

Hacıefendioğlu³

et al. 2016

World Congress on Civil, Structural, and Environmental Engineering

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Liquefaction became a major seismic phenomena just after the earthquakes occurred in Alaska and Niigata in 1964. Soil liquefaction is one of the most important causes of damages induced by earthquakes. Liquefaction can be defined as temporary loss of strength of saturated, coheisonless soil deposits under transient and cyclic loading due to excess pore water pressure generation. Consequently, the most appropriate and typical soil condition which brings the potential out to liquefy is loose sand with a groundwater table close to ground surface. This study is concerned with determination of liquefaction potential in a coastal region in Atakum County of Samsun Province, Turkey. Therefore, empirical equations were used to determine the peak ground accelerations for three scenario earthquakes with the magnitudes of 6.5, 7.0 and 7.2 in order to consider in the Simplified Procedure context proposed by Seed and Idriss (1971). Liquefaction potential evaluations were performed using SPT blow counts for four boreholes for sandy portions of the soil profile which exist in the first 20 meters below ground surface. In addition to analytical evaluations, two dimensional nonlinear analyses were ran with Towhata-Iai constitutive model suitable for liquefaction analysis available in DIANA finite element software to clarify excess pore pressure generation that leads to liquefaction. Finally, all the results are presented and discussed as a conclusion.

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Liquefaction Potential Variations Influenced by Building Constructions

Cited by 3 publications

References 3 publications

Seismic Analysis for Pile Foundations in the Liquefiable Soil Layer Using FLAC3D

Seismic Analysis for Pile Foundations in the Liquefiable Soil Layer Using FLAC3D

Nonlinear Dynamic Analysis Adopting Effective Stress Approach of an Embankment Involving Liquefaction Potential

Evaluation of Liquefaction Potential of a Coastal Region in Atakum

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