Modelling of laterally loaded screw piles with large helical plates in sand

Al-Baghdadi, T.; Brown, Michael; Knappett, Jonathan; Ishikura, R.

doi:10.1201/b18442-62

Cited by 24 publications

(3 citation statements)

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“…Then attention turned to attempts to increase lateral performance firstly through the use of near surface helix plates (Al-Baghdadi, et al, 2015). This seemed a viable option initially based upon FEA modelling but it was found that although the lateral resistance with large near surface plates could be increased by up to 22% when compared to a straight shafted pile the helix plate had to be placed very close to the seabed surface for greatest efficiency (Figure 4).…”

Section: Lateral Loading and Capacitymentioning

confidence: 99%

“…Screw piles or screw anchors have been recognized as having the potential to develop from there small current onshore size with low pile central core diameters (Dc) and larger helix diameters (Dh).This development for offshore application will require the upscaling of size and general geometry to carry significantly greater loads than they are currently used for onshore as well as a more complex loading regimes with combinations of tension and compressive loading (Davidson et al, 2018), lateral loading (Al-Baghdadi. et al, 2015& 2017, Pavan Kumar et al 2019) and cyclic loading (Newgard et al 2019, Schiavon et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Developing Screw Piles for Offshore Renewable Energy Application

Brown

Davidson

Cerfontaine

et al. 2020

Advances in Offshore Geotechnics

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This paper details the work undertaken at the University of Dundee in the last 5 years to develop understanding of screw piles to allow them to be deployed offshore as an alternative foundation type to driven piles used in jacket structures. This has been prompted by several UK and European funded research initiatives to develop silent foundation techniques to mitigate affects on marine mammals and other animals. Current mitigation systems also have significant associated costs and questionable environmental credentials. Prior to starting this work, it was recognized that development would not progress unless the ability to predict installation requirements did not form an early part of the research investigation. This then led to investigation of methods to reduce installation requirements and development of new design approaches for the required new screw pile geometries. This paper details the progress of these investigations which are still ongoing.

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Section: Lateral Loading and Capacitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Developing Screw Piles for Offshore Renewable Energy Application

Brown

Davidson

Cerfontaine

et al. 2020

Advances in Offshore Geotechnics

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“…Similarly, various studies conducted by Al-Baghdadi [13,14] have investigated the behavior of helical piles as offshore foundations through physical small-scale tests, finite element analysis (FEA), and numerical analysis. These studies subjected the piles to lateral, vertical, and combined loading using PLAXIS 2D and 3D software while modifying parameters such as helical plate spacing and pile geometry.…”

Section: Introductionmentioning

confidence: 99%

Parametric Study of Helical Piles Subjected to Compression and Tension Loading Through Finite Element Analysis: A Case Study

Gil-Hernandez,

Ibarra-Penagos,

Triviño-Oviedo

2024

Indian Geotech J

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This study performed a parametric analysis on helical piles through finite element models. To carry out this study, the modeling of two case studies was carried out in the PLAXIS 2D software; the results of the models were compared with the results of experimental investigations of helical piles subjected to compression and tension. The calibrated models were used to carry out the parametric study in which the spacing between plates, the number of helical plates, and the diameter of the plates were modified. The results suggest that a spacing ratio s/D < 3 is not convenient since it generates a cylindrical shear failure, decreasing the capacity of the pile; furthermore, utilizing more than three plates in helical piles does not result in a substantial increase in pile capacity, while increasing the diameter of the helical plates provides a larger supporting surface, directly enhancing the pile's capacity.

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Recent Advances in Helical Piles for Dynamic and Seismic Applications

Naggar

2022

Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 202

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Modelling of laterally loaded screw piles with large helical plates in sand

Cited by 24 publications

References 0 publications

Developing Screw Piles for Offshore Renewable Energy Application

Developing Screw Piles for Offshore Renewable Energy Application

Parametric Study of Helical Piles Subjected to Compression and Tension Loading Through Finite Element Analysis: A Case Study

Recent Advances in Helical Piles for Dynamic and Seismic Applications

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