Deformation-controlling design of steel frames under strong earthquakes

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560689
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Kumamoto University
• Principal Investigator: OGAWA Koji 熊本大学, 自然科学研究科, 教授 (80112390)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 鋼骨組 / 制震 / 制振 / 筋違 / 滑り支承 / 最大変形 / 残留変形

Outline of Final Research Achievements

A predicting method of the maximum and the residual inter-story drift angles in the structural steel frames under strong earthquakes was developed in this research. The frames are multi-storied steel buildings with steel braces that are conventional type braces with deterioration after buckling or with sliding frictional dampers settled at the bottoms of some columns in the first story. Taking the backtracking along the analytical path with the method, it was clarified that the deformation-controlling design that specifies the limitation of the both of the maximum physical values is feasible. The results of a series of numerical computation assert that both structural systems are suitable as the vibration control system in the sense of the economy and the efficiency.

Free Research Field

工学