Quick inspection method for steel structures based on the visible damage

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420569
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Tokyo Institute of Technology (2015-2016); Osaka Institute of Technology (2014)
• Principal Investigator: Kishiki Shoichi 東京工業大学, 科学技術創成研究院, 准教授 (00447525)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 被災度区分判定 / 損傷評価 / 鋼構造 / 鋼柱 / ブレース / 山形鋼 / 残留変形 / 繰り返し載荷実験

Outline of Final Research Achievements

Firstly, cyclic loading tests focusing on the residual out-of-plane deformation and the leg opening of single angle brace were conducted. The major findings obtained from the test are summarized as follows: (1) the maximum story drift angle and the maximum elongation of the brace can be estimated by using the residual out-of-plane deformation; (2) cumulative damage due to cyclic loading can be estimated by the length of the leg opening of its cross section.
And, cyclic loading tests focusing on the residual out-of-plane deformation in the local buckling region of steel column were conducted. The major findings obtained from the test are summarized as follows: (1) the out-of-plane deformation in local buckling region was strongly related with the residual strength deteriorated due to the local buckling; (2) the rotation angle of column after deterioration is able to be converted to the out-of-plane deformation by a 3-hinge deformation model of the local buckling.

Free Research Field

建築構造・材料