Study of dimension variation effect on a batter piled wharf structure with seismic isolation systems

In a conventional wharf design, batter piles are incorporated in the design as a primary lateral resistance element, however in recent years it is mostly discouraged to use batter piles in the design of wharf structure, especially in higher seismic zone. The use of seismic isolation in the design of wharf structure has been introduced since 2005 in UFC 4-152-01 code as an alternative design for wharf structure, from several studies it is shown that the usage of seismic isolation systems in wharf design has offered many benefits either in new design or structure retrofitting design. The objective of this research is to study the application of seismic isolation system on wharf structure with batter piles, with study case of the wharf design on Kendari, Sulawesi Tenggara, Indonesia. This objective will be achieved by comparing the length per width (L/W) ratio of wharf structure model to evaluate base reaction, natural period and deflection of structure, from these results, a clearer understanding about the advantages of seismic isolation system in wharf structure, so it will be encouraging the application of seismic isolation systems.