ESTIMATION OF SEISCMIC STRENGTH OF MULTI-STORY STEEL MOMENT RESISTING FRAMES WITH DAMPERS AND NEW COLUMN SUPPORT SYSTEM

2015 Fiscal Year Final Research Report

• Project/Area Number: 24360222
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Tohoku University
• Principal Investigator: Yoshihiro Kimura 東北大学, 未来科学技術共同研究センター, 教授 (60280997)
• Co-Investigator(Kenkyū-buntansha): Wada Akira 東京工業大学, 応用セラミックス研究所, 名誉教授 (90158684) ; Kaneda katsunori 日本大学, 理工学部, 特任教授 (60439289) ; Furukawa Sachi 東北大学, 工学研究科, 助教 (30636428)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 層中間型柱脚 / 全層梁降伏 / 損傷制御 / 塑性変形倍率

Outline of Final Research Achievements

In the steel frames, the column base is allowed to yield after beam yielding subjected to large earthquake in Japanese design codes such as “The Building Standard Low of Japan” by Building Center of Japan. If the frames have unexpected seismic horizontal force, the soft story mechanism may occur. To prevent the plastic collapse of the column on 1st story, our previous paper suggested the new column support system on 1st story, which consist of the reinforced concrete downside column and the steel topside column. In this paper, the virtual work method is applied to estimate the damage distribution and the collapse deformation capacity of the steel moment resisting frames with dampers and these support systems, and the shear and axial demands the column joints on 1st story are clarified.

Free Research Field

耐震構造