メインロープの震害軽減のための建物・エレベーター達成系の基礎的研究

摘要

Due to past several earthquakes, damage of elevators, especially in rope, were reported. It is quite important to maintain the function of an elevator for rescue activity after a severe earthquake. This study clarifies the correlation between vibration of a main rope of an elevator and the characteristics of a building (stiffness and damping factor). Influence of the setting position of a driving machine is also investigated. A model of a thirty-story building with elevator system is analyzed on vibration modes and dynamics responses to several seismic ground motions. It is shown that two-elevator system, which sets a transfer floor in the middle height of a building, can reduce the response of a main rope, and that increased damping factor can also reduce the response.%本研究では，30階建物を想定した建物・エレベーター連成系モデ ルを用い，固有値解析ならびに時刻歴応答解析により，建物の振動 特性とエレベーターのメインロープの地震応答の関係を分析した． 建物の振動特性（剛性，減衰）と巻上機の設置場所が異なるときの， 刺激関数における建物の質点位置とロープの質点位置の差βΔuと， 建物とロープ間の相対変位に着目して比較検討を行い，以下の知見 を得た．