NDLI: Effects of Pile-Soil Interaction on Push-Over Analysis of Jacket Type Offshore Platforms

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Asgarian, B. Lesani, M.
Copyright Year	2006
Abstract	Pushover analysis is performed to determine the capacity of jacket type offshore structures subjected to lateral loads. Overall behavior of the platform in the nonlinear range of deformation can be observed from pushover analysis results. This analysis can be used for the platform capacity assessment. For performing pushover analysis, nonlinear behavior of structural elements and lateral load pattern should be obtained. Both displacement and load control type of the analysis can be performed. One of the important aspects of pushover analysis is the non-linear behavior of the underlying soil and its interaction with the pile. In this paper pushover analysis of sample jacket type offshore platforms considering pile soil interaction (PSI) is performed. In the pushover analysis performed, fiber elements are used for the modeling of the member and soil nonlinearities. Actual soil layer properties, which have been derived from geotechnical reports, are incorporated in the model using fiber elements of “DRAIN-3DX” software. Each soil layer is presented by an equivalent fiber element, having the same characteristics of the relevant soil. The pile structure from top elevation until its tip together with other jacket components including the legs and braces are also introduced by fiber elements. Push over analysis is performed for the platforms subjected to wave load pattern. In order to compare the Pile-Soil Interaction (PSI) effects, all of the analyses are also performed using fixed and pinned pile ends at mud line elevation and pile stubs. The significance of the Pile-Soil Interaction and soil non-linear behavior is pointed out from this comparison and analysis results.
Sponsorship	Ocean, Offshore, and Arctic Engineering Division
Starting Page	263
Ending Page	270
Page Count	8
File Format	PDF
ISBN	0791847462
DOI	10.1115/OMAE2006-92249
e-ISBN	0791837777
Volume Number	Volume 1: Offshore Technology; Offshore Wind Energy; Ocean Research Technology; LNG Specialty Symposium
Conference Proceedings	25th International Conference on Offshore Mechanics and Arctic Engineering
Language	English
Publisher Date	2006-06-04
Publisher Place	Hamburg, Germany
Access Restriction	Subscribed
Subject Keyword	Structural elements (construction) Deformation Computer software Offshore structures Soil Modeling Waves Offshore platforms Stress Displacement Fibers Bracing (construction)
Content Type	Text
Resource Type	Article

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Jacket Type Offshore Structure Pile-Soil Interaction Modeling Using Fiber Elements

Effect of Bracing Configurations on the Lateral Behavior of Jacket Type Offshore Platforms, Considering Pile-Soil-Structure Interaction

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A Comparison Between Modal Push-Over and Nonlinear Dynamic Response of Jacket Type Offshore Platforms Subjected to Strong Ground Motions

Effect of Grouting in Jacket Type Offshore Platforms Pile-Leg Interaction in Nonlinear Range of Deformation

Effect of Structural Member Uncertainties in the Jacket Type Offshore Platform Assessments

Assessment of Fatigue Reliability for Jacket-Type Offshore Platforms Considering Dynamic Behavior

Incremental Dynamic Analysis Considering Pile-Soil-Structure Interaction for the Jacket Type Offshore Platforms

Nonlinear Analysis of Jacket-Type Offshore Platforms Using Fiber Elements

Effects of Pile-Soil Interaction on Push-Over Analysis of Jacket Type Offshore Platforms

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