The Recycling Torque of a Single-Plate Helical Pile for Offshore Wind Turbines in Dense Sand

The helical piles have been being treated as a kind of novel foundation for offshore wind turbines recently, due their fast installation, high uplift capacity, convenience for recycling, and other advantages. The recycling of the helical pile especially will reduce the cost significantly and protect...

Full description

Saved in:
Bibliographic Details
Published in:Applied sciences 2019-10, Vol.9 (19), p.4105
Main Authors: Ding, Hongyan, Wang, Le, Zhang, Puyang, Liang, Yuguo, Tian, Yinghui, Qi, Xin
Format: Article
Language:English
Subjects:
Accuracy
Environmental protection
helical pile
Installation
Model testing
Offshore
Offshore energy sources
Offshore operations
Recycling
Recycling equipment
Sand
Steel pipes
test model
theoretical model
Torque
Turbines
Vertical forces
Wind power
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The helical piles have been being treated as a kind of novel foundation for offshore wind turbines recently, due their fast installation, high uplift capacity, convenience for recycling, and other advantages. The recycling of the helical pile especially will reduce the cost significantly and protect the environment as much as possible. However, the research for this area is basically in infancy and there is no reference for predicting the recycling torque of a helical pile in sand. In order to predict the recycling torque of single-plate helical piles in dense sand: a theoretical model, which was inspired by the way to predict the installation torque of single-plate helical pile in sand, was developed, and a series of single gravity model tests were conducted to verify that theoretical model. The theoretical model can predict the recycling torque of single-plate helical pile considering the influences of the size of helix and the vertical force on the shaft. This model fills in the blank of predicting the recycling torque of a single-plate helical pile in sand and it is also useful guidance for the choice of suitable recycling equipment.
ISSN:2076-3417
2076-3417
DOI:10.3390/app9194105