Ultimate drift capacity and damage evaluation of RC walls

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289180
• 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: Tokyo Institute of Technology
• Principal Investigator: Kono Susumu 東京工業大学, 応用セラミックス研究所, 教授 (30283493)
• Co-Investigator(Kenkyū-buntansha): SHINOHARA Yasuji 東京工業大学, 応用セラミックス研究所, 准教授 (50196408) ; WATANABE Hidekazu 東京工業大学, 応用セラミックス研究所, 助教 (20620636) ; MUKAI Tomohisa 建築研究所, 構造研究グループ, 主任研究員 (30318208) ; TANI Masanori 京都大学, 工学研究科, 准教授 (50533973) ; MARUTA Makoto 島根大学, 総合理工学研究科, 教授 (30416763) ; SAKASHITA Masanobu 建築研究所, 構造研究グループ, 研究員 (50456802)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: RC壁 / 終局時変形性能 / 靱性能 / 損傷評価

Outline of Final Research Achievements

In order to simulate compression controlled flexural failure, a fiber based model was constructed and calibrated using series of experimental studies conducted on reinforced concrete walls last several years in Japan. Then a parametric study was carried out with the fiber based model to simulate the hysteresis curves of walls to see effects of three variables on the load and drift level of characteristic points of a backbone curve. Three variables were concrete compressive strength (30MPa,45MPa, 60MPa), confining reinforcement ratio in boundary regions (1.1% - 3.2%) and axial load ratio (0% - 50%). The parametric study showed that three variables have different degree of influences on the features of backbone curves and the axial load ratio is the most influential factor on the ultimate drift capacity.

Free Research Field

建築構造・材料