Vortex induced vibration reduction device of offshore structure

摘要

The present invention relates to a vortex vibration reduction device of an offshore structure. More specifically, it is a device that can reduce the vortex vibration of the offshore structure by installing a string capable of generating turbulence and vibrating against the current flow in the cylindrical structure constituting the offshore structure, which is installed in the cylindrical structure The strings are installed symmetrically with both strings at a predetermined angle, or in a direction perpendicular to the flow of the ocean, which reduces the drag and lateral forces acting on the cylindrical structure, thereby reducing the vortex resistance in the offshore structure. It is possible to simplify the configuration, easy maintenance and repair, and to reduce the installation cost, and relates to a vortex vibration reduction device for offshore structures that can achieve economic efficiency. To this end, the present invention is a cylindrical structure; And a string provided in the longitudinal direction of the cylinder structure at intervals with the cylindrical structure at both side symmetrical positions of the cylindrical structure, wherein the string provided at the symmetrical position with respect to the cylindrical structure is Provided is a vortex vibration reducing apparatus of an offshore structure, which is positioned perpendicular to the flow direction of the fluid at a position corresponding to the central portion.