Elastic-plastic behavior and design method of beams attached to the joint panel that the plastic deformation occurs under biaxial loadings

2015 Fiscal Year Final Research Report

• Project/Area Number: 25709047
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Building structures/Materials
• Research Institution: Utsunomiya University
• Principal Investigator: NAKANO TATSUYA 宇都宮大学, 工学(系)研究科(研究院), 准教授 (00361361)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 鋼構造 / 柱梁接合部 / 塑性変形能力 / ２方向載荷実験 / 有限要素解析 / 梁端接合部 / 接合部パネル

Outline of Final Research Achievements

In this study, the elasto-plastic behavior of the WF beam-to-RHS column connection under the biaxial loadings was investigated by biaxial loading tests and finite element method analysis. As a result, the bending strength of beam was reduced by the plastic deformation of joint panel, the factor of decrease became clear. The declining trend could be evaluated by the panel over design factor. In addition, the early fracture of beam-end connection did not occur. And within the range of practical member combination, the whole of partial frame showed the plastic deformation capacity over the required performance by the abundant absorbed energy of the joint panel, despite that the bending strength of beam decreases.

Free Research Field

建築構造，鋼構造，接合部，耐震工学