Journal ArticleDOI
Increasing the Resistance of Piles Subject to Cyclic Lateral Loading
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In this paper, small-scale tests were carried out on a monopile and fin piles to determine the effect the length of fins had upon the lateral displacement of cyclically loaded piles.Abstract:
Small-scale tests were carried out on a monopile and fin piles to determine the effect the length of fins had upon the lateral displacement of cyclically loaded piles. A variety of loading conditions were applied to model piles in a dense sand by using a mechanical loading system. Ten thousand cycles were used in each test to represent 20 years of environmental loading on offshore structures. Variables included the magnitude, frequency, and direction of the load; the type of pile tip; and the length of the fins. The reduction in pile head displacement was used as a measure of the efficiency of the fins. The tests show that the fins reduced the lateral displacement by at least 50% after 10,000 cycles.read more
Citations
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Journal ArticleDOI
Numerical study on long-term monopile foundation response
Song-Hun Chong,César Pastén +1 more
TL;DR: In this article, a semi-empirical scheme is adopted to involve a mechanical constitutive model to extract stress and strains at the first cycle and polynomial-type strain accumulation functions to track the progressive plastic deformation.
Journal ArticleDOI
Analysis of pullout load capacity of suction caissons in clay by a three-dimensional displacement approach
TL;DR: In this article, a study was made to present analytical solutions of pullout load capacity for a suction caisson subjected to inclined tension in clay, where the inclined tension on the skirt of the caisson was transformed into an equivalent system comprised of the vertical, horizontal, and moment load applied on the center of the lid.
Journal ArticleDOI
Model Study on the Performance of Single-Finned Pile in Sand under Tension Loads
W. R. Azzam,A. Z. Elwakil +1 more
TL;DR: In this paper, a modern pile-modification strategy known as finned pile that increases pile-tension capacity by providing an affirmative anchorage close to the pile tip is introduced.
Journal ArticleDOI
Evaluation of pullout load capacity of suction caissons in sand using a three-dimensional displacement approach
TL;DR: In this paper, an investigation was conducted to obtain analytical solutions for the pullout behavior of a suction caisson undergoing inclined loads in sand, and the inclined load was transformed into an equivalent load in an equivalent manner.
Journal ArticleDOI
Reducing monopile rotation under lateral loading in sandy soils
TL;DR: In this paper, the authors investigated the use of concentric rings (CRs) of small diameter (displacement) piles (SDPs) surrounding a monopile installed in dry sand, with the intention of limiting its rotation (lateral displacement) under repeated lateral loading.
References
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Journal ArticleDOI
Lateral Resistance of Piles in Cohesive Soils
TL;DR: In this paper, the authors presented methods for the calculation of the deflections at working loads, the ultimate lateral resistance, and moment distribution for laterally loaded single piles and pile groups.
Book
Foundation design and construction
TL;DR: In this paper, the authors provide a manual of foundation design and construction methods for the practising engineer, while analytical considerations play a subordinate role and sufficient soil mechanics is included to assist the student in relating and extending his knowledge to embrace the practical considerations involved in foundation selection, design, and construction.
Journal ArticleDOI
Influence of rigidity on laterally loaded pile groups in marine clay
TL;DR: In this article, the influence of parameters like flexural rigidity of pile material, embedment length of pile, and arrangement of piles with respect to the direction of loading on the behavior of laterally loaded pile groups has been studied through an experimental program.