Gentle Driving of Piles (GDP) at a sandy site combining axial and torsional vibrations: Part I - installation tests

Tsetas, Athanasios; Tsouvalas, Apostolos; Gómez, Sergio Sánchez; Pisanò, Federico; Kementzetzidis, Evangelos; Molenkamp, Timo; Elkadi, Ahmed S.K.; Metrikine, Andrei V.

doi:10.1016/j.oceaneng.2022.113453

Cited by 15 publications

(12 citation statements)

References 24 publications

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“…In this section, the numerical results for the two different friction fatigue mechanisms are compared against field data from a medium-scale onshore test campaign [28]. The properties of the tubular vibro-driven pile from the GDP field campaign are given in Table 1.…”

Section: Numerical Results and Field Datamentioning

confidence: 99%

Exploring memory mechanisms for friction fatigue in vibratory pile driving

Tsetas,

Tsouvalas,

Metrikine

2024

J. Phys.: Conf. Ser.

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This paper studies the mechanism that leads to the reduction of frictional soil reaction forces during pile driving, termed friction fatigue. We focus on axial vibratory driving, an environmentally friendly monopile installation method, and examine two friction fatigue formulations, i.e. a penetration-based and a cyclic memory mechanism. Friction fatigue plays a pivotal role in pile drivability and post-installation bearing capacity for piles installed via axial vibratory driving. Through numerical analyses and validation against field data from onshore experiments, the efficacy of these memory mechanisms is assessed. The results reveal that the proposed cyclic memory mechanism provides consistently more accurate predictions than the corresponding penetration-based approach, offering a promising option for modelling friction fatigue in vibratory driving. This study advances our understanding of friction fatigue in the context of vibratory driving for offshore monopile installation, emphasizing the need for further numerical and experimental works in this topic.

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Section: Numerical Results and Field Datamentioning

confidence: 99%

Exploring memory mechanisms for friction fatigue in vibratory pile driving

Tsetas,

Tsouvalas,

Metrikine

2024

J. Phys.: Conf. Ser.

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“…A realistic case study is considered hereafter to examine the effect of varying pile-soil interface conditions based on the geometry and material parameters described in Dahl et al (2015) and measurements of a representative vibratory force by Tsetas et al (2023a). The data can be used together since both campaigns used piles with an equal diameter of 0.762 m and comparable driving depths into the soil.…”

Section: Effect Of Pile-soil Interface Conditionsmentioning

confidence: 99%

“…The sound pressure level Estimated vibratory force exerted by the installation tool at the pile head as a function. (A) shows the time signature and (B) the amplitude spectrum of the force (Tsetas et al, 2023a). Parameters adapted from Dahl et al (2015).…”

Section: Underwater Noise Field and Seabed Vibrationsmentioning

confidence: 99%

The influence of contact relaxation on underwater noise emission and seabed vibrations due to offshore vibratory pile installation

2023

Self Cite

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The growing interest in offshore wind leads to an increasing number of wind farms planned to be constructed in the coming years. Installation of these piles often causes high underwater noise levels that harm aquatic life. State-of-the-art models have problems predicting the noise and seabed vibrations from vibratory pile driving. A significant reason for that is the modeling of the sediment and its interaction with the driven pile. In principle, linear vibroacoustic models assume perfect contact between pile and soil, i.e., no pile slip. In this study, this pile-soil interface condition is relaxed, and a slip condition is implemented that allows vertical motion of the pile relative to the soil. First, a model is developed which employs contact spring elements between the pile and the soil, allowing the former to move relative to the latter in the vertical direction. The developed model is then verified against a finite element software. Second, a parametric study is conducted to investigate the effect of the interface conditions on the emitted wave field. The results show that the noise generation mechanism depends strongly on the interface conditions. Third, this study concludes that models developed to predict noise emission from impact pile driving are not directly suitable for vibratory pile driving since the pile-soil interaction becomes essential for noise generation in the latter case.

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“…Vibratory pile driving is an increasingly popular foundation method. In comparison to jacking and impact driving methods, vibratory driving offers higher drivability, faster penetration rates, reduced noise levels, and reduced risk of pile damage [1][2][3]. Variable vibratory drivers allow for adaptability to various site-specific conditions.…”

Section: Introductionmentioning

confidence: 99%

Ground Vibration Response to Vibratory Sheet Pile Driving and Extraction

Guo,

Jia,

et al. 2023

Buildings

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Sheet piles are extensively used as foundation structures in urban environments. However, the vibrations associated with sheet pile construction can potentially adversely affect existing buildings, as well as cause discomfort to nearby residents. This study aims to analyze ground vibration response during the driving and extraction of sheet piles. To this end, field tests of U-shaped sheet piles were conducted in Beijing silty clay, during which ground vibrations in the near-field were monitored. Subsequently, a numerical model was developed using the coupled Eulerian–Lagrangian method to simulate the pile–soil interaction characteristics and to investigate ground vibration intensity in the far-field. The research results indicate that the ground vibration response modes during the driving and extraction of sheet piles are distinctly different. Due to the entry effect, the critical depth during pile driving typically occurs in shallow soil layers, while during pile extraction, the critical depth generally corresponds to the pile’s embedded depth to overcome the soil locking effect. Ground vibrations rapidly decrease in the near-field (<6 m), while in the far-field (>6 m), the attenuation rate significantly slows down. Vibrations can be widely perceived by residents at radial distances of less than 12 m. Through a systematic assessment, it was concluded that sheet pile construction is unlikely to directly damage surrounding buildings but may inconvenience nearby residents. Additionally, a parametric analysis of the vibration source revealed that appropriately adjusting the driving frequency and amplitude can effectively reduce vibration levels.

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Gentle Driving of Piles (GDP) at a sandy site combining axial and torsional vibrations: Part I - installation tests

Cited by 15 publications

References 24 publications

Exploring memory mechanisms for friction fatigue in vibratory pile driving

Exploring memory mechanisms for friction fatigue in vibratory pile driving

The influence of contact relaxation on underwater noise emission and seabed vibrations due to offshore vibratory pile installation

Ground Vibration Response to Vibratory Sheet Pile Driving and Extraction

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