Dynamic Behavior of Single Steel-Driven Vertical and Batter Piles under Horizontal Excitations: Field Model Testing

Ralli, Rohit; Manna, Bappaditya; Datta, Manoj

doi:10.1061/(asce)gt.1943-5606.0002726

Cited by 4 publications

(1 citation statement)

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“…Further, these dynamic results are studied under harmonic vibration and analytically with the use of the continuum approach method by Elkasabgy and El Naggar (2013) and Sinha et al (2015) to know the effect on soil nonlinearity subjected to dynamic excitation and the combined soil-pile responses in terms of frequency and amplitude and their influence on impedance parameters. Some other researchers (Elkasabgy and Naggar 2018;Biswas and Manna 2018;Ralli et al 2022;Kumar et al 2022) also worked in this area and did experimental field and laboratory tests on different setups and compared their datasets with the theoretical curves measured from the continuum approach. This theoretical approach is also used for the study of stiffness and damping with a combination of soil and pile under varying frequencies.…”

Section: Introductionmentioning

confidence: 99%

Machine Induced Dynamic Field Responses of Group Pile with Different Pile Arrangements

Kumar

Choudhary

Burman

2023

Preprint

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The main objective of the current investigation is to study the dynamic behaviour of a 3-pile group with two different arrangements of pile setups under coupled (horizontal and rocking) excitations. To accomplish this objective, machine-induced field excitation tests are conducted on small-scale hollow steel piles. The 3-pile group is driven into the ground in a triangular arrangement with 3d spacing. Two different soil-pile setups, i.e., Pile Group-I and Pile Group-II, are created based on dynamic force directions. In the case of Pile Group-I, the forces are applied to the direction of the median of the triangle, and for Pile Group-II, the forces are applied to other directional loads. From the test results, it is found that the resonant peaks of horizontal and rocking amplitudes for Pile Group-I are lower than Pile Group-II. In the case of resonant frequencies, the values of Pile Group-I are observed to be the same or a little bit higher as compared to Pile Group-II. It is found that the dynamic soil-pile-soil interaction effect is more prominent for Pile Group-II than for Pile Group-I. For numerical investigation, the continuum approach method is utilised with the inclusion of a dynamic group interaction factor to predict the dynamic coupled responses in terms of frequency and amplitude for these two soil-pile setups. To understand the behaviour of pile groups, boundary zone parameters and variations of impedance parameters (stiffness and damping) with operating frequencies are also measured using this theoretical approach.

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