Development of design method for bridges with seismic response modification devices on the basis of bi-directional seismic action

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289136
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Kyoto University
• Principal Investigator: Igarashi Akira 京都大学, 防災研究所, 教授 (80263101)
• Co-Investigator(Kenkyū-buntansha): FURUKAWA Aiko 京都大学, 地球環境学堂, 准教授 (00380585) ; DANG Ji 埼玉大学, 理工学研究科, 助教 (60623535)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 耐震設計 / 免震 / 制震 / ダンパー / ゴム支承 / 曲線橋

Outline of Final Research Achievements

The purpose of the present research is to establish effective design procedures for bridges with seismic response modification techniques, namely seismic isolation and energy dissipation device application. Firstly, the bi-directional character of input seismic ground motion acceleorograms is analyzed and efficient numerical procedures to generate spectrum-compatible bi-directional input accelerograms are developed. Secondly, methods for modeling of the bi-directional nonlinear restoring force characteristics and bi-directional dynamic response behavior are proposed. The combination of these two findings and methodologies are demonstrated to be applicable to seismic performance assessment and damage evaluation of structures with seismic protective measures.

Free Research Field

構造工学