Numerical Estimation of the Pile Toe and Shaft Unit Resistances During the Installation Process in Sands

Konkol, Jakub

doi:10.1515/sgem-2015-0005

Cited by 6 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the pressure to be maintained at interface-A1 (see Figure 2) can be determined. CEL model in Abaqus has advantages in solving mesh distortion in large deformation problems (Konkol, 2015;Ko et al, 2017;Zhen et al, 2017), which has been successfully used to study the behavior of anchors during dynamic installation in nonhomogeneous clay (Kim and Hossain, 2017) and optimize the gravity coring (Qin et al, 2016). The Euler mesh used in the CEL approach can be void domain, or part or all of it is occupied by more than one material, and its volume fraction represents the part of the mesh filled with a specific material.…”

Section: Numerical Simulation Of Secondary Samplingmentioning

confidence: 99%

Development of a pressure-retaining separation and transfer system for sediment and overlying seawater

Guo

Zhou²,

Ge³

et al. 2022

Front. Mar. Sci.

View full text Add to dashboard Cite

Methane leakage at the interface between sediment and overlying seawater is an important basis for gas hydrate exploration. Therefore, a transfer device with working pressure of 30MPa and corresponding scheme are proposed to separate and transfer the sediment and overlying water inside the sampler under the condition of pressure-retaining. Based on the pressure relief valve with adjustable threshold pressure, the device transfers the overlying water by compressing the internal volume and transfers the sediment by secondary sampling. The performance of transfer device is studied by simulation and experiment. Based on the coupled Eulerian-Lagrangian approach in the Abaqus, the secondary sampling was investigated, and the penetration resistance and coring rate of the secondary sampling tube are 141N and 86.2%, respectively. By using the hydraulic simulation software AMESim, the pressure fluctuation caused by the movement of the mechanism during the transfer process was studied, and the pressure fluctuation amplitude is within 0.89 MPa. Furthermore, the laboratory transfer tests were carried out under high pressure conditions, and meantime, the simulation results are verified. Under the working condition of 30MPa, the device can maintain a pressure loss of no more than 8.0% (2.4MPa) within two hours, maintain pressure fluctuations during the transfer process within 4.8% (1.44MPa), and ensure that the pressure in the culture kettle decreases by 4.7% relative to the pressure in the sampler after the transfer, which shows the feasibility of the device application.

show abstract

Section: Numerical Simulation Of Secondary Samplingmentioning

confidence: 99%

Development of a pressure-retaining separation and transfer system for sediment and overlying seawater

Guo

Zhou²,

Ge³

et al. 2022

Front. Mar. Sci.

View full text Add to dashboard Cite

show abstract

“…Lagrangian part of the model is limited to the discrete rigid pile element. The 5 finite elements per pile radius are used to obtain the optimal mesh effectiveness and this is done using the authors' experience in CEL modelling (e.g., Konkol 2015). The pile-soil contact is modelled using frictionless interaction and general contact algorithm which is based on penalty contact method.…”

Section: The Coupled Eulerian Lagrangian Modelmentioning

confidence: 99%

Influence of Installation Effects on Pile Bearing Capacity in Cohesive Soils – Large Deformation Analysis Via Finite Element Method

Konkol

Bałachowski

2017

Studia Geotechnica Et Mechanica

Self Cite

View full text Add to dashboard Cite

Abstract:In this paper, the whole process of pile construction and performance during loading is modelled via large deformation finite element methods such as Coupled Eulerian Lagrangian (CEL) and Updated Lagrangian (UL). Numerical study consists of installation process, consolidation phase and following pile static load test (SLT). The Poznań site is chosen as the reference location for the numerical analysis, where series of pile SLTs have been performed in highly overconsolidated clay (OCR ≈ 12). The results of numerical analysis are compared with corresponding field tests and with so-called "wish-in-place" numerical model of pile, where no installation effects are taken into account. The advantages of using large deformation numerical analysis are presented and its application to the pile designing is shown.

show abstract

Pressure-retaining sampler for sediment including overlying water based on heavy duty ROV-Jellyfish

Guo

Wang

et al. 2022

Applied Ocean Research

View full text Add to dashboard Cite

Numerical Estimation of the Pile Toe and Shaft Unit Resistances During the Installation Process in Sands

Cited by 6 publications

References 15 publications

Development of a pressure-retaining separation and transfer system for sediment and overlying seawater

Development of a pressure-retaining separation and transfer system for sediment and overlying seawater

Influence of Installation Effects on Pile Bearing Capacity in Cohesive Soils – Large Deformation Analysis Via Finite Element Method

Pressure-retaining sampler for sediment including overlying water based on heavy duty ROV-Jellyfish

Contact Info

Product

Resources

About