Probablisitic performance assessment for ultimate limit state of reinforced concrete buildings

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420601
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Nagoya University (2014-2015); National Research Institute for Earth Science and Disaster Prevention (2013)
• Principal Investigator: Nagae Takuya 名古屋大学, 減災連携研究センター, 准教授 (90402932)
• Co-Investigator(Kenkyū-buntansha): MATSUMORI Taizo 国立研究開発法人防災科学技術研究所, 減災実験研究領域兵庫耐震工学研究センター, 主任研究員 (10272361) ; TOSAUCHI Yusuke 国立研究開発法人防災科学技術研究所, 減災実験研究領域兵庫耐震工学研究センター, 研究員 (10737597) ; MORIKAWA Nobuyuki 国立研究開発法人防災科学技術研究所, 社会防災システム研究領域災害リスク研究ユニット, 主任研究員 (60414413) ; TAKAHASHI Noriyuki 国立大学法人東北大学, 工学(系)研究科(研究院), 准教授 (60401270)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 大変形 / 繰り返し加振 / 強度劣化 / 基礎 / すべり / 性能設計 / 確率

Outline of Final Research Achievements

A probabilistic approach to assess seismic performance of reinforced concrete buildings was focused on. Owners and residents of buildings can decide the designs of their own buildings after understanding the key assessments such as continuous usability, reparability as well as prevention of collapse. Ground motions, whose intensity levels significantly exceed the adopted in design, have been recorded in recent earthquakes. Building foundations are required to be fixed in the current design code. An unfixed foundation system is proposed in this study. Cast iron bearings placed in a reinforced concrete foundation provide a stable frictional resistant force (friction coefficient of 0.2). Buildings adopting such foundation system are expected to exhibit sliding at foundation before having large inelastic deformations in upper frames. To apply the probabilistic approach promoted the development of proposed structural system.

Free Research Field

建築構造