Simulation of soil–foundation–structure interaction of Hualien large-scale seismic test using dynamic centrifuge test

Ha, Jeong Gon; Lee, Sei-Hyun; Kim, Dong-Soo; Choo, Yun Wook

doi:10.1016/j.soildyn.2014.01.008

Cited by 23 publications

(8 citation statements)

References 13 publications

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“…The centrifuge model test is a reliable, reduced-scale model test method that can simulate in situ stress conditions by applying centrifugal acceleration to a scaled model (Martakis et al 2017). During the rotation of the reduced scale model in the centrifuge, base shaking can be applied at the bottom of the model using a shaking table mounted to the centrifuge arm to observe the seismic behaviours (Ha et al 2014). All tests utilized a 50 g centrifugal acceleration field using the beam-type centrifuge at the Korea Advanced Institute of Science and Technology.…”

Section: Geotechnical Centrifuge With a Shaking Tablementioning

confidence: 99%

Investigation of seismic performances of unconnected pile foundations using dynamic centrifuge tests

Jo³

et al. 2018

Bull Earthquake Eng

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An unconnected pile foundation allows separation between the lower pile and the pile cap, and it has been proposed as an effective foundation type for reducing the seismic load during strong earthquakes. However, previous quantitative evaluations of unconnected piles with various foundation types and earthquake intensities are inadequate. In this study, the influence of base shaking level and the material of the interposed layer between pile and pile cap on the seismic behaviour of unconnected piles were evaluated using a centrifuge model test to reproduce the field stress conditions. A dynamic centrifuge model test was completed on an experimental model consisting of dry sandy soil, a foundation and a single degreeof-freedom structure. The acceleration of the structure and the settlement of the foundation system were measured during base shaking. For the unconnected pile system, the structural seismic load reduction effect due to rocking behaviour was confirmed, and the unconnected pile foundation with the interposed layer with large stiffness had less vertical settlement than the conventional shallow foundation. Finally, the rotational stiffness and damping ratio for the foundation system used in the centrifuge model tests were derived and discussed.

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Section: Geotechnical Centrifuge With a Shaking Tablementioning

confidence: 99%

Investigation of seismic performances of unconnected pile foundations using dynamic centrifuge tests

Jo³

et al. 2018

Bull Earthquake Eng

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“…Ha et al [6] simulated the Hualien Large Scale Seismic Test using a centrifuge to assess the reliability and effectiveness of centrifuge modelling for soil-foundation-structure interaction studies. A centrifuge test, in which a scaled-down model is rotated to a high speed with a centrifugal acceleration far higher than that of gravity, can be used to imitate the actual stress conditions and investigate differences between the design and actual soil behaviours in the construction of large structures.…”

Section: Introductionmentioning

confidence: 99%

“…Commonly referred to as 'the site next door,' centrifuge tests enable easy and reliable modelling of large-scale sites. Ha et al [6] simulated the Hualien Large Scale Seismic Test using a centrifuge to assess the reliability and effectiveness of centrifuge modelling for soil-foundation-structure interaction studies. Ha and Kim [7] evaluated the seismic behaviour of soils under nuclear containment structures using dynamic centrifuge tests.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the dynamic behaviour of a storage tank with different foundation types focusing on the soil‐foundation‐structure interactions using centrifuge model tests

Park

Kwon

et al. 2017

Earthq Engng Struct Dyn

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Summary This paper proposes a dynamic centrifuge model test method for the accurate simulation of the behaviours of a liquid storage tank with different types of foundations during earthquakes. The method can be used to determine the actual stress conditions of a prototype storage‐tank structure. It was used in the present study to investigate the soil‐foundation‐structure interactions of a simplified storage tank under two different earthquake motions, which were simulated using a shaking table installed in a centrifuge basket. Three different types of foundations were considered, namely, a shallow foundation, a slab on the surface of the ground connected to piles and a slab with disconnected piles. The test results were organised to compare the ground surface and foundation motions, the slab of foundation and top of structure motions and the horizontal and vertical motions of the slab, respectively. These were used to establish the complex dynamic behaviours of tank models with different foundations. The effects of soil–foundation–structure interaction with three foundation conditions and two different earthquake motions are focused and some important factors, that should be considered for future designs are also discussed in this research. Copyright © 2017 John Wiley & Sons, Ltd.

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“…12 Several researchers studied the main components of SFSI and the in-°u ential parameters by means of centrifuge tests. 11,13,14 This study aims to evaluate and quantify the in°uence of foundation type on the seismic response of a regular mid-rise moment resisting building frame during earthquake excitations. For this purpose, FLAC3D 15 is used to numerically simulate and conduct a fully coupled analysis on the entire soil-foundation-structure system by treating the behavior of the soil, the foundation and the structure with equal rigor.…”

Section: Introductionmentioning

confidence: 99%

Influence of Foundation Type on Seismic Performance of Buildings Considering Soil–Structure Interaction

Hokmabadi

Fatahi

2016

Int. J. Str. Stab. Dyn.

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In selecting the type of foundation best suited for mid-rise buildings in high risk seismic zones, design engineers may consider that a shallow foundation, a pile foundation, or a pile-raft foundation can best carry the static and dynamic loads. However, di®erent types of foundations behave di®erently during earthquakes, depending on the soil-structure interaction (SSI) where the properties of the in situ soil and type of foundation change the dynamic characteristics (natural frequency and damping) of the soil-foundation-structure system. In order to investigate the di®erent characteristics of SSI and its in°uence on the seismic response of building frames, a 3D numerical model of a 15-storey full-scale (prototype) structure was simulated with four di®erent types of foundations: (i) A¯xed-based structure that excludes the SSI, (ii) a structure supported by a shallow foundation, (iii) a structure supported by a pile-raft foundation in soft soil and (iv) a structure supported by a°oating (frictional) pile foundation in soft soil. Finite di®erence analyzes with FLAC3D were then conducted using real earthquake records that incorporated material (soil and superstructure) and geometric (uplifting, gapping and P À Á e®ects) nonlinearities. The 3D numerical modeling procedure had previously been veri¯ed against experimental shaking table tests conducted by the authors. The results are then presented and compared in terms of soil ampli¯cation, shear force distribution and rocking of the superstructure, including its lateral deformation and drift. The results showed that the type of foundation is a major contributor to the seismic response of buildings with SSI and should therefore be given careful consideration in order to ensure a safe and cost e®ective design.

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Simulation of soil–foundation–structure interaction of Hualien large-scale seismic test using dynamic centrifuge test

Cited by 23 publications

References 13 publications

Investigation of seismic performances of unconnected pile foundations using dynamic centrifuge tests

Investigation of seismic performances of unconnected pile foundations using dynamic centrifuge tests

Investigation of the dynamic behaviour of a storage tank with different foundation types focusing on the soil‐foundation‐structure interactions using centrifuge model tests

Influence of Foundation Type on Seismic Performance of Buildings Considering Soil–Structure Interaction

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