EARTHQUAKE RESPONSE ANALYTICAL METHOD FOR BASE ISOLATION BUILDING AND EARTHQUAKE-PROOF SAFETY EVALUATION METHOD OF BASE ISOLATION DEVICE USING THE SAME

PROBLEM TO BE SOLVED: To provide an earthquake response analytical method for a base isolation building in which the behavior of a base isolation device provided in the base isolation building is grasped in an earthquake with high accuracy and the safety can be evaluated reliably, and to provide an earthquake-proof safety evaluation method of the base isolation device using the earthquake response analytical method for the base isolation building.SOLUTION: An earthquake response analytical method for a base isolation building is configured by: integrating each member element of an upper structure 2 of the building, a base isolation layer 4 comprising a base isolation device, a joining slab 6 for connecting pile heads 10 of multiple foundation piles 8 with each other, and a lower structure 3 comprising a foundation pile 8 and a pile cap 7 with a seismic isolator installed therein and joining the pile head 10 with the joining slab 6 by including a model of the ground; constituting an earthquake response analysis model 1 for the base isolation building collecting the foundation pile 8 with high accuracy; triggering design ground motion to each part 11, 13 of the foundation pile 8 at the same time; and calculating a time history response result of each section of an integrated structural model from the upper structure 2 to the foundation pile 8 at the same time. 【課題】地震時において免震建物に設けられた免震装置の挙動を高い精度で把握し、その安全性を確実に評価可能な免震建物用地震応答解析手法、及び免震建物用地震応答解析手法を用いた免震装置の耐震安全性評価手法を提供する。【解決手段】免震建物用地震応答解析手法は、建物の上部構造２と、免震装置を含む免震層４と、複数の基礎杭８の杭頭部１０同士を連結するつなぎスラブ６と、基礎杭８、及び免震装置が設置されてつなぎスラブ６と杭頭部１０とを接合するパイルキャップ７からなる下部構造３との各部材要素を、地盤のモデルを含めて一体化し、基礎杭８を精度よく集約した免震建物用地震応答解析モデル１を構成し、設計用地震動を基礎杭８の各部１１，１３に同時刻に作用させ、上部構造２から基礎杭８に至る一体化された構造モデルの各部の時刻歴応答結果を同時刻に算出する。【選択図】図５