Fixed Wave Screen Designs

摘要

Many sheltered harbors have been created through the reclamation of land or the construction of breakwaters and jetties. Due to increasing environmental concerns and regulations associated with filling bottom habitat, less intrusive wave screens are being developed to protect marinas from waves and currents. This paper describes two of these minimal-footprint wave screen structures, concentrating on the different design concepts used for various water depths and wave pressures and on the design features that are incorporated to facilitate their installations. rn The wave screens described in this paper are limited to fixed, not floating, structures. They typically consist of two major elements - pile supports and a wall or screen facing the currents or waves. The earliest and most basic wave screen structures were constructed of timber piles with timber bracing and screens. It is difficult to design these systems to resist significant wave pressures in moderate to deep water. With increasing water depths and harsher climates, steel piles are typically used and the screen itself may be constructed of a steel frame with timber or precast concrete panels. rn Two case studies are presented in this paper to illustrate innovative designs for shallow and deep water wave screens. The differences associated with resisting different wave pressures in different water depths are addressed, as well as the design features that are incorporated to facilitate fabrication and installation