Clarification of Fire Resistance Performance and Construction of Fire Resistance Design for Welded Connections of Steel Structures

2017 Fiscal Year Final Research Report

• Project/Area Number: 26709040
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Building structures/Materials
• Research Institution: Nagoya University
• Principal Investigator: Ozaki Fuminobu 名古屋大学, 環境学研究科, 准教授 (40434039)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 鋼構造 / 耐火 / 溶接接合部 / シャルピー衝撃値

Outline of Final Research Achievements

The main purpose of this research is to clarify fire resistance performance on welded connections of steel building structures. High temperature tensile experiments for steel plates with the welded connections, high temperature bending shear experiments for column to beam welded connections, high temperature Charpy impact tests for the welded connection were conducted, respectively. Furthermore, verification methods on the brittle fractures of the welded connection in the steel structure subjected to fire was proposed. From the experimental results, it was confirmed that the welded connection at the high temperature possesses the same or larger strength and deformation capacity than the base steel member. The verification method on a ductile crack in the welded connection, which can be used at the fire resistance design in practice, was constructed.

Free Research Field

建築構造耐火