Structural Control for Mitigating Wind and Ocean Current Hazards

9503620 Wu本研究包括理论和实验研究，以确定极端风和洋流造成的自然灾害的机制，并制定方法，以显着减少对高层建筑物，海上结构和公路基础设施造成的这种危害。 该方案的主要目标是： - 为了实现显著减少涡流引起的或侧面的 结构物横向于水流的摇摆; - 发明涡流产生控制装置， 所需的主动或被动控制功能;及- 寻找减少流向阻力的有效方法。 主动和被动控制模式将被考虑，以涵盖各种规模和多样化的几何配置的结构。 将遵循经验方法，以寻求启发式但创造性地开发用于执行所需控制功能的涡流发生装置。

9503620 Wu This research consist of theoretical and experimental studies to determine the mechanism of natural hazards due to extreme winds and ocean currents and to develop methods for significant reduction of such hazards inflicting on tall buildings, offshore structures and highway infrastructures. The main goals of this program are: - to achieve significant reduction of vortex-induced or side sway of the structures transversal to the flow stream; - to invent vortex-generating control devices for executing the required active or passive control functions; and - to find effective methods for reducing streamwise drag. Both active and passive modes of control will be considered so as to cover structures of various scales and diversified geometric configurations. Empirical approach will be followed to pursue a heuristic yet creative development of the vortex-generating devices for executing the required control functions.