ROTATABLE ROAD INFORMATION FACILITIES USING SHEAR STRUCTURE

摘要

A rotary road information facility using a shear structure is provided to reduce wind load applied to the facility temporarily, to prevent the facility from being broken, and to reduce manufacturing cost of the facility by brittle-breaking specific parts of shear keys when applying strong wind to the facility and by rotating a second pillar part on an inner connector. A rotary road information facility using a shear structure comprises first and second pillar parts(10,20), a cylindrical connector(30), and shear keys(40). The second pillar part has one side having the same cross-sectional area as the first pillar part and has a pair of first insertion holes symmetrically formed along an outer peripheral surface of the second pillar part so that the second pillar part is mounted on the first pillar part. The connector has a fixed part(31) fixed on an inner peripheral surface of the first pillar part, and a rotary guiding part(32) inserted in the second pillar part and formed with second insertion holes having the same size of the first insertion holes. The shear keys are inserted in the first insertion holes and formed with shear grooves between the inner part of the first insertion hole and the outer side of the second insertion hole.