Approximate Maximum Deformation Evaluation of Base-Isolated Buildings Considering Collision against Retaining Wall Based on Experimental Study

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630234
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Building structures/Materials
• Research Institution: Kyoto University
• Principal Investigator: HAYASHI YASUHIRO 京都大学, 工学(系)研究科(研究院), 教授 (70324704)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 免震建物 / パルス性地震動 / 擁壁衝突 / 建物内伝播 / 振動台実験 / 最大応答変形 / 最大応答加速度 / 簡易評価

Outline of Final Research Achievements

The objective of our study is to develop a rational seismic design method of base-isolated buildings considering the collision against retaining walls during unexpected large inland shallow earthquakes. First, we grasp the dynamic response behavior of base-isolated buildings after the collision based on shaking table tests. Next, it is demonstrated that the maximum deformation of the isolator is efficiently estimated from a theoretical solution of a nonlinear single-degree-of-freedom system subjected to sinusoidal pulse. Finally, an approximate method to estimate the maximum deformation of a building modeled by the multi-degree-of-freedom system considering the effect of the collision against retaining walls and induced higher mode response of the superstructure.

Free Research Field

建築耐震構造