Study of safety technology concerning collapse prediction of wooden structure by aftershock

2016 Fiscal Year Final Research Report

• Project/Area Number: 26350468
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: National Institute of Occupational Safety and Health,Japan
• Principal Investigator: Takanashi Seiji 独立行政法人労働者健康安全機構労働安全衛生総合研究所, 建設安全研究グループ, 部長代理 (60358421)
• Co-Investigator(Renkei-kenkyūsha): OHDO Katsutoshi (独)労働安全衛生総合研究所, 研究推進・国際センター, センター長 (50358420)
• Research Collaborator: MICHIBA Nobuyoshi ハウスプラス確認検査(株), 評定部, 主任研究員 ; SAKAMAKI Yoshio ハウスプラス住宅保証(株), 常務取締役 ; OHASHI Yoshimitsu 東京都市大学, 工学部建築学科, 教授
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 耐震 / 地震 / 自然災害 / シミュレーション工学

Outline of Final Research Achievements

If wooden buildings are damaged by the earthquake, repair work and demolition work will be necessary. Due to the aftershocks under construction, there is concern about the risk of secondary disasters due to the collapse of buildings. This was clarified by experimental tests and analysis. In addition, we sought a method to estimate the characteristics of buildings with high risk of collapse due to aftershocks based on the damaged state of the outer wall. Two types of outer walls, siding and mortar, were prepared. Regarding siding, it was shown that the degree of damage can be estimated by the crack width around the nail fixing the siding or the sliding amount of the siding. For mortar, it was shown that the degree of damage can be evaluated by the width of the crack around the opening. It is a simple and objective indicator that can be judged without having special knowledge.

Free Research Field

建築構造（耐震設計）