Vibration measurements of Olmsted Prototype Wickets by laser techniques

摘要

This paper discusses the effectiveness of scanning laser techniques for measuring the dynamic response of the Olmsted Prototype Wicket Dam at the Smithland facility, Smithland, KY. Full-scale prototype experiments at the Smithland facility wereconducted to facilitate the development of an innovative wicket for the Olmsted Dam. The Olmsted Locks & Dam (L&D) is the Corps largest navigation project which will replace the existing L&D 52 and 53 on the lower Ohio River. The proposed wickets will beused to control the water flow and maintain a navigable pool on the lower Ohio River.The laser techniques' effectiveness to extract the modal information for large civil structures is discussed in this paper. Experimental dynamic responses of the prototype wickets are examined to evaluate the design performance and structural integrity of hydraulically actuated wickets for the proposed Olmsted L&D. Experimental modal results were used to update the analytical and physical scaled models.