PILE-SOIL STRUCTURE INTERACTION IN JACKET PLATFORM UNDER LATERAL LOADINGS

It is essential for a fixed offshore platform supported by pile foundation to resist lateral loading due to wind, wave and current forces subjected to the platform since minimal movement is required to provide stable work place. Thus, the design of the pile foundation should satisfy the complicated and uncertain environmental magnitude. The response of the pile foundation to the environmental load is strongly affected by pile structure and soil structure interaction. Since the development of p-y curve represents the pile foundation and soil structure interaction, it will be used to model the soil resistance to the pile movements and the results obtained will be analyzed. Structural Analysis Computer System (SACS) will be employed in this paper to model the structural member of the platform and the pile foundation. A changed in parameter will be tested to account for responses of the pile foundation to soil structure interaction which is the pile thickness. The responses of pile due to these transient loadings have been obtained.