Shaking Table Model Tests on Pile Groups behind Quay Walls Subjected to Lateral Spreading

Motamed, Ramin; Towhata, Ikuo

doi:10.1061/(asce)gt.1943-5606.0000115

Cited by 89 publications

(28 citation statements)

References 21 publications

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“…This increase in the maximum lateral force shown in Fig. 38 (linearˆt) is also consistent with the test results on pile groups behind sheet pile quay wall (Motamed and Towhata, 2010) as depicted in theˆgure. Despite to JRA 2002, which uniformly distributes the force among piles in the group regardless of the position of pile in the group, experimental data of this study clearly reveals that the contribution of each pile row in the total lateral force is signiˆcantly aŠected by its position in the group.…”

Section: Parametric Study On Total Lateral Force In Pile Groupsupporting

confidence: 78%

Experimental Modeling of Large Pile Groups in Sloping Ground Subjected to Liquefaction-Induced Lateral Flow: 1-G Shaking Table Tests

Motamed

Sesov²,

Towhata

et al. 2010

Soils and Foundations

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A series of 1-g shaking table model tests were carried out to study the behavior of pile groups embedded in sloping ground subjected to lateral ‰ow of liqueˆed soil. Two diŠerent conˆgurations of pile groups: large (6×6 and 11×11) and small (3×3), were considered. The models were subjected to the liquefaction-induced large ground deformation to investigate the eŠect of several parameters on the response of pile groups and mechanism of lateral ‰ow. These parameters comprise amplitude, frequency, and direction of input motion; density and slope of ground; and the thickness of non-liqueˆable layer at the surface. The outcome of this parametric study reveals the importance of above mentioned factors which should be taken into account for analysis and design purposes. In addition, the results from the experiments clearly illustrate that in sloping ground conˆguration, both front (in upstream) and rear (in downstream) row piles receive greater lateral forces than middle row piles. Thisˆnding is attributed to the distribution of soil motion (displacement and velocity) of the liqueˆed soil in the model. As a result, installation of additional pile rows in front and behind an existing pile foundation can be considered as an eŠective retroˆtting technique. Finally, soil-pile interaction was evaluated by running experiments with diŠerent pile spacings, and reliability of the JRA 2002 design manual in estimation of liquefaction-induced lateral force on piles is evaluated.

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Section: Parametric Study On Total Lateral Force In Pile Groupsupporting

confidence: 78%

Experimental Modeling of Large Pile Groups in Sloping Ground Subjected to Liquefaction-Induced Lateral Flow: 1-G Shaking Table Tests

Motamed

Sesov²,

Towhata

et al. 2010

Soils and Foundations

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“…Many attempts have been made in recent decades to elucidate the failure mechanisms and behavior of pile foundations subjected to earthquakes using dynamic centrifuge experiments [17][18][19][20][21][22][23][24], shaketable experiments [12,[25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] and full-scale field tests that utilize blast-induced liquefaction [41][42][43]. The shake-table experiment is one of the tools used to identify and quantify the failure mechanisms in pile foundations during earthquakes.…”

Section: Introductionmentioning

confidence: 99%

Response of a RC pile group in liquefiable soil: A shake-table investigation

Tang

Ling

2014

Soil Dynamics and Earthquake Engineering

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“…Despite that there were more experimental shaking table studies focusing on the saturated soil, soil liquefaction phenomenon, and soil–pile interaction , several research projects emphasized the structural behavior in dry soil. Makris et al .…”

Section: Introductionmentioning

confidence: 99%

“…However, the seismic performance of scoured bridge is not well understood yet. Recently, with the advance of experimental technique, soil-structure interaction (SSI) experiments became the focus of many studies, including a series of tests performed on a centrifuge [10][11][12][13][14][15] and tests performed on a shaking table [16][17][18][19][20][21][22][23][24][25]. Ohtsuki et al [10] conducted centrifuge testing to study pile group with superstructure in liquefiable soil before and after site remediation.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on seismic behavior of scoured bridge pier with pile foundation

Wang

Liu

Chen

et al. 2014

Earthq Engng Struct Dyn

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Summary This study investigated the seismic performance and soil‐structure interaction of a scoured bridge models with pile foundation by shaking table tests using a biaxial laminar shear box. The bridge pier model with pile foundation comprised a lumped mass representing the superstructure, a steel pier, and a footing supported by a single aluminum pile within dry silica sand. End of the pile was fixed at the bottom of the shear box to simulate the scenario that the pile was embedded in a firm stratum of rock. The bridge pier model was subjected to one‐directional shakes, including white noise and earthquake records. The performance of the bridge pier model with pile foundation was discussed for different scoured conditions. It is found that the moment demand of pile increases with the increase of scoured depth whereas the moment demand of the bridge pier decreases, and this transition may induce the bridge failure mechanism transform from pier to pile. The seismic demand on scoured pile foundations may be underestimated and misinterpreted to a certain degree. When evaluating the system damping ratio with SSI, the system response may not be significantly changed even if the soil viscous damping contribution is varied. Copyright © 2014 John Wiley & Sons, Ltd.

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Shaking Table Model Tests on Pile Groups behind Quay Walls Subjected to Lateral Spreading

Cited by 89 publications

References 21 publications

Experimental Modeling of Large Pile Groups in Sloping Ground Subjected to Liquefaction-Induced Lateral Flow: 1-G Shaking Table Tests

Experimental Modeling of Large Pile Groups in Sloping Ground Subjected to Liquefaction-Induced Lateral Flow: 1-G Shaking Table Tests

Response of a RC pile group in liquefiable soil: A shake-table investigation

Experimental investigation on seismic behavior of scoured bridge pier with pile foundation

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