Evaluation study on remaining performance of structural steel after crack initiation

Research Project

Project/Area Number	23760518
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Building structures/materials
Research Institution	The University of Tokyo
Principal Investigator	IYAMA Jun 東京大学, 大学院・工学系研究科, 准教授 (30282495)
Project Period (FY)	2011 – 2012
Project Status	Completed (Fiscal Year 2012)
Budget Amount *help	¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000) Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000) Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords	鋼構造 / き裂進展 / 非破壊検査 / 残存性能 / 有限要素解析 / き裂 / ボイド / コンピュータ断層撮影(CT) / 塑性変形 / 破断
Research Abstract	The aim of this research is to establish a reasonable method to evaluate remaining performance of structural steel in steel buildings after yielding or crack initiation due to earthquakes. In this study, tensile load was applied to round steel bar specimens and then the specimens were investigated by X-ray CT to measure void volume or crack length inside the specimens. The observation results approximately agreed with the finite element analysis showing the possibility to evaluate remaining performance with these analysis and observation.

Report

(3 results)