STUDY ON VIBRATORY CHARACTERISTICS OF LARGE, CANTILEVERED FLOOR STRUCTURE

Abstract

In design and construction of 21-story high-rise office building featured by its bold architectural design using considerably large cantilever beams, the authors conducted vertical vibration test of a floor slab supported by the cantilever beams. After and before its cladding work to install large-sized glazed curtain walls all around the building, vertical vibration tests were done by making freefall of sand bags and by a person walking. It was confirmed that secondary members such as glazed curtain walls are very effective in improving rigidity of a floor slab and increasing damping factor.