Erratum to: Effect of seabed slope on the pile behaviour of a fixed offshore platform under lateral forces

Abstract

Fixed offshore platforms supported by pile foundations have to resist lateral loads due to wave and current forces. The response to environmental loads is strongly affected by the soil-structure (pile) interaction. Forces exerted by waves are the predominant lateral environmental forces governing jacket structure design, especially the foundation piles. The purpose of the present investigation is to perform a static wave analysis of a typical fixed offshore platform in extreme environmental conditions and to study the effects of the combined lateral and vertical loads on pile group foundations. The three-dimensional modelling and analysis of the offshore platform are carried out using the finite difference method. The present analysis is done under static conditions considering the structural and environmental loads at extreme environmental conditions, reaching the state of static equilibrium. A parametric study is done by varying the seabed slope to examine the differences in the soil-structure interaction behaviour of piles. The lateral displacement at the pile top and at the seabed level increases with the seabed slope. Also the depth at which the maximum shear force and bending moment occur from the pile top increases with the seabed slope.

Quasi-Static Model Test of Pile-Supported Wharf under Cyclic Lateral Loading

“…Based on the analytical model, a simplified evaluation method of peak response is proposed. Muthukkumaran et al [10] used the finite difference method to investigate the effect of combined lateral and vertical loads on a pile-supported platform and analyzed the effect of different seabed slopes on the soil-pile interaction behavior. The results show that the displacements at the pile top and seabed, and the depths at which maximum shear and bending moments occur, all increase as the seabed slope increases.…”

Pile Apparent Fixity Length Estimation for the Jacket-type Offshore Wind Turbines under Lateral Loads Applicable to Fatigue Analysis

“…Furthermore, the effect of applying an axial load to the pile on the produced bending moment and lateral displacement along the depth was minimal and negligible. The effect of the seabed slope on the piles' behaviour of a fixed offshore platform under lateral loads was investigated by Muthukkumaran and Arun [8]. Their results indicated that the lateral displacement at the pile tip, the seabed level, increases with the seabed slope.…”