Study on deformation capacity improvement of shaped steel braces in steel frames

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560682
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Hiroshima University
• Principal Investigator: TAGAWA HIROSHI 広島大学, 工学(系)研究科(研究院), 教授 (70283629)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 山形鋼 / ブレース / 変形性能 / 接合部補強 / 圧縮補強 / 載荷実験 / ガセットプレート / 剛性評価

Outline of Final Research Achievements

For improvement of deformation capacity of angle-shaped steel braces and suppression of their deterioration behavior, a reinforcement method was investigated. In that method, the same steel angles as the brace member are welded at the brace-ends for both reinforcements of compression and connection behavior. Loading tests under compression, tension and repeated loads were conducted. The finite element analyses were also conducted. The test and analysis results revealed efficacy of the proposed reinforcement method. Furthermore, effects of the out-of-plane stiffness of gusset plates were examined. Stiffening methods of bolted connections with steel member assemblies were also examined for connecting the reinforcement members to the existing building frames.

Free Research Field

建築構造学