Pile and Pile-Group Response to Liquefaction-Induced Lateral Spreading in Four Large-Scale Shake-Table Experiments

Ebeido, Ahmed; Elgamal, Ahmed; Tokimatsu, Kohji; Abe, Akio

doi:10.1061/(asce)gt.1943-5606.0002142

Cited by 84 publications

(24 citation statements)

References 23 publications

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“…Therefore, while the aim of the work presented in this section is to review and provide well-interpreted field of the dynamic response of piles by different physical model tests that can be used to evaluate analytical procedures and design methods. Many studies have investigated the seismic response of pile, soil and superstructure using shake-table experiments [58][59][60][61][62][63], dynamic centrifuge experiments [19,64,65], and full-scale field tests that utilise blast-induced liquefaction [66,67]. The requirements for a model container for carrying out seismic soil-structure interactions (SSI) at 1-g (shaking table) and N-g (geotechnical centrifuge at N times earth's gravity) are well introduced in [68].…”

Section: Laboratory Testingmentioning

confidence: 99%

“…Likewise, the work performed by Liu et al [78] was demonstrated that pile group bending moment was able to increase dramatically as the diameter increases. Four large laminar-box shaking table experiments used by Ebeido et al [59] to examine pile response due to the mechanism of liquefaction-induced lateral spreading. They concluded that the highest pile lateral loads occurred at the initial stages of lateral deformation.…”

Section: Shaking Table Testsmentioning

confidence: 99%

See 1 more Smart Citation

The Dynamic Behaviour of Pile Foundations in Seismically Liquefiable Soils: Failure Mechanisms, Analysis, Re-Qualification

Rostami¹,

Hytiris²,

Bhattacharya³

2021

Earthquakes - From Tectonics to Buildings

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This chapter presents a concise overview of the mechanics of failure, analysis and requalification procedures of pile foundations in liquefiable soils during earthquakes. The aim is to build a strong conceptual and technical interpretation in order to gain insight into the mechanisms governing the failure of structures in liquefaction and specify effective requalification techniques. In this regard, several most common failure mechanisms of piles during seismic liquefaction such as bending (flexural), buckling instability and dynamic failure of the pile are introduced. Furthermore, the dynamic response commentary is provided by critically reviewing experimental investigations carried out using a shaking table and centrifuge modelling procedures. The emphasis is placed on delineating the concept of seismic design loads and important aspects of the dynamic behaviour of piles in liquefiable soils. In this context, using Winkler foundation approach with the proposed p–y curves and finite-element analyses in conjunction with numerical analysis methods, are outlined. Moreover, the feasibility of successful remediation techniques for earthquake resistance is briefly reviewed in light of the pile behaviour and failure. Finally, practical recommendations for achieving enhanced resistance of the seismic response of pile foundation in liquefiable soil are provided.

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Section: Laboratory Testingmentioning

confidence: 99%

Section: Shaking Table Testsmentioning

confidence: 99%

The Dynamic Behaviour of Pile Foundations in Seismically Liquefiable Soils: Failure Mechanisms, Analysis, Re-Qualification

Rostami¹,

Hytiris²,

Bhattacharya³

2021

Earthquakes - From Tectonics to Buildings

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show abstract

“…Figure 5 shows the time history curves of sinusoidal wave excitation. The sinusoidal wave has a simpler law than the seismic wave, and it is easy to analyze the dynamic response of the model foundation and structure, many scholars have used sinusoidal wave as excitation, especially in the liquefaction condition [35,36]. The white noise with an amplitude of 0.02 g and a duration of 20 s was input before and after each sinusoidal wave excitation input.…”

Section: Instrumentation and Experimental Programmentioning

confidence: 99%

Comparative Study on Seismic Response of Pile Group Foundation in Coral Sand and Fujian Sand

Ding

Zhang

et al. 2020

JMSE

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The physical and mechanical properties of coral sand are quite different from those of common terrestrial sands due to the special marine biogenesis. Shaking table tests of three-story structures with nine-pile foundation in coral sand and Fujian sand were carried out in order to study the dynamic response characteristics of pile-soil-structure system in coral sand under earthquake. The influence of shaking intensity on the dynamic response of the system was taken into consideration. The results indicated that the peak value of the excess pore pressure ratio of coral sand was smaller than that of Fujian sand under two kinds of shaking intensities; moreover, the development speed of excess pore pressure ratio of coral sand was smaller than that of Fujian sand. The liquefaction of coral sand was more difficult than Fujian sand under the same relative density and similar grain-size distribution. The horizontal displacement, settlement, column bending moment, and pile bending moment of coral sand were smaller than those of Fujian sand, respectively. The magnification effect of column bending moment of buildings in coral sand was less than that in Fujian sand with increasing shaking intensity. This study can provide some supports for the seismic design of coral reef projects.

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“…The potential of liquefaction and consequent damage have attracted significant research efforts to examine the complex behaviour of SPSI in liquefiable soil (Holzer et al 1989;Kramer 1996). Moreover, if the soil layers are sloped, the ground could move laterally, causing lateral spreading, which adds supplementary lateral forces on piles (Abdoun and Dobry 2002;Ebeido et al 2019;Ishihara and Cubrinovski 1998;Su et al 2016). Failures of pile foundations and the supporting structures during recent earthquakes (e.g., 1989 Loma Prieta earthquake, 1995 Kobe earthquake, and 1999 Chi-Chi earthquake) underscored the importance of better understanding and evaluation of seismic SPSI effects (Boulanger et al 1995;Chu et al 2006;Su et al 2020;Sugimura et al 2004).…”

Section: Introductionmentioning

confidence: 99%

“…The behaviour of a low-cap pile group in liquefied dense sand was examined using shake table tests (Tang et al 2016). Ebeido et al (2019) performed large-scale shake table experiments to study the response of singles pile and pile group to liquefaction-induced lateral spreading. This experimental database provides valuable information for calibrating advanced numerical models for high-performance computational simulation tools.…”

Section: Introductionmentioning

confidence: 99%

Seismic Behaviour of Piles in Non-Liquefiable and Liquefiable Soil

Hussein

Naggar

2021

Preprint

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This paper investigates the nonlinear soil-pile-structure interaction (SPSI) employing three-dimensional (3D) nonlinear finite element models (FEM) verified with the results of large-scale shaking table tests of model pile groups-superstructure systems. The responses of piles in both liquefiable and non-liquefiable soil sites to ground motion with varying intensities were evaluated considering both kinematic and inertial interaction. The calculated piles and soil responses agreed well with the responses measured during the shaking events. The numerical models correctly predicted the different pile deformation modes that were exhibited in the experiments. The finite element analysis (FEA) was then employed to perform a parametric study to evaluate the kinematic and inertial effects on the piles' response, considering different ground motion levels and piles characteristics. It was found that the bending moment of piles in the liquefiable site increases significantly, compared to the non-liquefiable site, due to the loss of lateral support of the liquified soil, and the maximum bending moment occurs at the interface between the liquified and liquefied sand layers. The inertial interaction contributes the most to the bending moments at the pile top and the interface between the top clay and liquefied loose sand layers. For piles with a larger diameter, the bending moment due to kinematic interaction increases significantly, and the bending moment distribution corresponds to short (rigid) pile behaviour. In addition, the piles at the saturated site displace laterally as a rigid body during strong ground motions because the pile base loses the lateral support due to the soil liquefaction. Finally, the kinematic interaction effect becomes more significant for piles with higher elastic modulus.

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Pile and Pile-Group Response to Liquefaction-Induced Lateral Spreading in Four Large-Scale Shake-Table Experiments

Cited by 84 publications

References 23 publications

The Dynamic Behaviour of Pile Foundations in Seismically Liquefiable Soils: Failure Mechanisms, Analysis, Re-Qualification

The Dynamic Behaviour of Pile Foundations in Seismically Liquefiable Soils: Failure Mechanisms, Analysis, Re-Qualification

Comparative Study on Seismic Response of Pile Group Foundation in Coral Sand and Fujian Sand

Seismic Behaviour of Piles in Non-Liquefiable and Liquefiable Soil

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