地震後の機能維持を目的として屋根支承部に免制振部材を適用した鉄骨gM根体育館の動的特个生 その1 造の力学特性および免震部材を適用した建物の時刻歴応答解析

摘要

Part1Basically Mechanical Property of the Gymnasia and Vibration Response Analysis of the Building with Base Isolation System Alarge number of steel roof bearings in RC gymnasia were damaged by The 2011 off the Pacific coast of Tohoku Earthquake and The 2016 Kumamoto Earthquake. An investigation of the gymnasia after the earthquakes showed that typical types of damage included:due to amplified horizontal and vertical seismic response of the roof. In order to keep the function of the gymnasia as shelters after earthquakes, it is necessary to prevent damage not only structural members, but non-structural elements such as ceiling board, lighting equipment which were mounted to steel roof truss. In the present paper, the basic characteristics of vibration response of the gymnasia equipped with base isolation system to roof bearings is discussed based on numerical simulation. Also, effect of seismic response reduction of the steel roof is investigated bases on the obtained analysis results.%本報では、鉄骨置屋根体育館を模擬した立体フレームモデルによる解析を行って得られた結果に基づき、本構造の基本的な力学特性と、支承部に免震部材を適用した場合の振動応答特性について検証した。その結果、以下に示すような知見を得た。