CEILING STRUCTURE

PROBLEM TO BE SOLVED: To provide a ceiling structure having further excellent earthquake resistance.SOLUTION: A ceiling structure comprises a ceiling material suspended from a structural skeleton, a mass body suspended from the structural skeleton and an earthquake isolation device interposed between the ceiling material and the mass body and restraining vibration in response to rotary operation caused by the inputted vibration, and the earthquake isolation device comprises a first member, a second member relatively displacing with the first member by the vibration and a damping material provided between the first member and the second member, and the first member can adjust an interval between a ceiling material connection part connected to the ceiling material and the rotational center of the rotary operation or the second member can adjust an interval between a mass body connection part connected to the mass body and the rotational center.SELECTED DRAWING: Figure 3 【課題】より優れた耐震性を備える天井構造を提供する。【解決手段】構造躯体から吊り下げられた天井材と、前記構造躯体から吊り下げられた質量体と、前記天井材と前記質量体との間に介在され、入力された振動により生じる回転動作に伴って前記振動を抑制する制震装置と、を有し、前記制震装置は、第１部材、前記振動により前記第１部材と相対変位する第２部材、及び、前記第１部材と前記第２部材との間に設けられた減衰材、を有し、前記第１部材が前記天井材と連結される天井材連結部と前記回転動作の回転中心との間隔、または、前記第２部材が前記質量体と連結される質量体連結部と前記回転中心との間隔を調節可能である。【選択図】図３