VIBRATION CONTROL STRUCTURE OF STAIRCASE

PROBLEM TO BE SOLVED: To provide a vibration control structure of a staircase that enables stable vibration suppression at low cost and has a superior degree of freedom of design.SOLUTION: The present invention relates to a vibration control structure of a staircase characterized in that: a lower end part 11α of a force beam 11 supporting step boards 12 of the staircase 10 is supported on a floor plate 3d supported by a floor beam; and bundles 50(a), 50(b), and 50(c) are arranged between the floor plate 3d where the lower end part of the force beam 11 is installed and a foundation slab B1, namely, between a floor binder 3a and the foundation slab B1, and between a support member 40 coupling the floor binders 3a, 3a to each other and the foundation slab B1.SELECTED DRAWING: Figure 3 【課題】安価に安定した振動抑制を可能とし、設計自由度に優れる階段の制振構造を提供すること。【解決手段】床梁に支持された床板３ｄに、階段１０の踏板１２を支持する力桁１１の下端部１１αが支持され、力桁１１の下端部が設置される床板３ｄと、基礎スラブＢ１との間であって、床小梁３ａと基礎スラブＢ１との間、および床小梁３ａ，３ａどうしを連結した支持部材４０と基礎スラブＢ１との間に、束５０（ａ），５０（ｂ），５０（ｃ）が配置されていることを特徴とする階段の制振構造とした。【選択図】図３