Vertical vibration of a floating pile considering the incomplete bonding effect of the pile-soil interface

Cui, Chunyi; Meng, Kun; Xu, Chenshun; Wang, Benlong; Xin, Yu

doi:10.1016/j.compgeo.2022.104894

Cited by 83 publications

(29 citation statements)

References 26 publications

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“…However, for post-earthquake buildings, damage assessment requires a combination of information involving many factors (such as building structure and soil characteristics around the building) [7,8]. Although there is much research on non-destructive testing methods using ultrasonic and sonic wave propagation to obtain material properties [9,10], many scholars use experiments and simulations to evaluate the damage and risk or reliability of structures considering the performance of buildings under the action of ground motions [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Intelligent Damage Assessment for Post-Earthquake Buildings Using Computer Vision and Augmented Reality

et al. 2023

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The most negative effects caused by earthquakes are the damage and collapse of buildings. Seismic building retrofitting and repair can effectively reduce the negative impact on post-earthquake buildings. The priority to repair the construction after being damaged by an earthquake is to perform an assessment of seismic buildings. The traditional damage assessment method is mainly based on visual inspection, which is highly subjective and has low efficiency. To improve the intelligence of damage assessments for post-earthquake buildings, this paper proposed an assessment method using CV (Computer Vision) and AR (Augmented Reality). Firstly, this paper proposed a fusion mechanism for the CV and AR of the assessment method. Secondly, the CNN (Convolutional Neural Network) algorithm and gray value theory are used to determine the damage information of post-earthquake buildings. Then, the damage assessment can be visually displayed according to the damage information. Finally, this paper used a damage assessment case of seismic-reinforced concrete frame beams to verify the feasibility and effectiveness of the proposed assessment method.

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Section: Introductionmentioning

confidence: 99%

Intelligent Damage Assessment for Post-Earthquake Buildings Using Computer Vision and Augmented Reality

et al. 2023

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“…Therefore, the resonance phenomenon between the rigid disk and the soil layer underlain by hard bedrock is more likely to happen, and the soil beneath the disk should be treated as the soil layer of finite thickness rather than an elastic half-space medium at this stage. 28 The "finite thickness of soil layer" has been used to study the vertical vibration of a rigid disk on/in soil in recent literature. For example, Cai et al 29 evaluated the vertical dynamic response of a rigid cylindrical foundation embedded in a poroelastic soil layer, where the dynamic interaction between a surface foundation and a single-layered poroelastic soil was obtained.…”

Section: Introductionmentioning

confidence: 99%

“…Because the bottom of soil layer is the rigid bedrock condition in this kind of physical system, the refraction and scattering of the waves due to the vibration of the rigid disk often occur between the soil layer and bedrock. Therefore, the resonance phenomenon between the rigid disk and the soil layer underlain by hard bedrock is more likely to happen, and the soil beneath the disk should be treated as the soil layer of finite thickness rather than an elastic half‐space medium at this stage 28 . The “finite thickness of soil layer” has been used to study the vertical vibration of a rigid disk on/in soil in recent literature.…”

Section: Introductionmentioning

confidence: 99%

Horizontal motions of a rigid disk placed on a poroelastic soil layer of finite thickness

Yang

2023

Num Anal Meth Geomechanics

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In the previous studies of rigid disk-soil dynamics, the soil under the foundation is usually treated as a poroelastic half-space medium. However, the waves due to the vibration of rigid disk can reflect and refract back and forth between the finite soil layer and rigid bedrock, which would significantly influence the soil deformation and flow of the rigid disk-soil system. In order to overcome the shortcoming, this paper presents an analytical solution to determine the response of the rigid disk subjected to harmonic horizontal loads resting on poroelastic soil layer overlying rigid bedrock. The displacements and stresses field of the disk and soil are obtained by virtue of the Hankel transform method, dual integral equations method. Furthermore, the rationality and accuracy of the developed solution are confirmed in comparison with the previous studies. Based on the obtained solutions, numerical examples are performed to the effects of the thickness and permeability of poroelastic soil layer on the dynamic response of the rigid disk-soil system in the physical domain.

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“…Various related fields note the importance of pile-soil interaction during dynamic loading, for example, post-installation modeling of wind and wave loads (Markou and Kaynia, 2018), piles in earthquake analysis (Nogami and Konagai, 1987;Novak, 1991), pile bearing capacity under vertical vibration (Nogami and Konagai, 1987) and onshore vibratory pile driving (Holeyman, 2002). Cui et al (2022) introduce a Winkler spring connection between the pile and surrounding soil to study the effect of incomplete pile-soil bonding on the vibrations of a floating pile. All cases justify further research in pile-soil interaction for vibratory pile driving.…”

mentioning

confidence: 99%

“…This paper introduces a model that allows for relative motion between pile and soil in acoustic predictions of vibratory pile driving. It relaxes the perfect contact, i.e., monolithic, interface conditions between pile and soil, that is standard in acoustic pile driving models, by introducing a contact stiffness element comparable as done by Cui et al (2022). Friction is essential in vibratory pile installation but is strongly non-linear by definition.…”

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confidence: 99%

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

2023

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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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Vertical vibration of a floating pile considering the incomplete bonding effect of the pile-soil interface

Cited by 83 publications

References 26 publications

Intelligent Damage Assessment for Post-Earthquake Buildings Using Computer Vision and Augmented Reality

Intelligent Damage Assessment for Post-Earthquake Buildings Using Computer Vision and Augmented Reality

Horizontal motions of a rigid disk placed on a poroelastic soil layer of finite thickness

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

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