VERTICAL MOVEMENT VIBRATION-DAMPING MECHANISM IN LARGE SPAN FRAME

摘要

PURPOSE: To suppress and absorb vertical movement by providing internal and external steel frame beams between a set of the adjacent beams of a large span frame while the steel frame beams orthogonally cross the set of the adjacent beams, and by arranging a mass body and an energy absorption device between the steel frame beams. CONSTITUTION: Between at least a set of adjacent beams 4a and 4b out of a plurality of large span beams 4... for forming a large span frame 1, two internal steel frame beams 8 and 8 orthogonally crossing the adjacent beams 4a and 4b are erected in parallel each other. Between the internal steel frame beams, a mass body 9 where upper and lower parts are supported is provided. Also, outside the internal steel frame beams 8 and 8, external steel frame beams 5 and 5 are erected furthermore in parallel with the internal steel frame beams, and energy absorption devices 15... are arranged in a vertical direction between the external steel frame beams 5 and 5 and the internal ones 8 and 8, and between the internal steel frame beams 8 and 8, thus suppressing vertical vibration caused by external force, and absorbing the energy.