The influence of the clearence of the buckling restrained brace on the required stiffeness of its cover

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420576
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: 独立行政法人高齢・障害・求職者雇用支援機構職業能力開発総合大学校(能力開発院、基盤整備センター)
• Principal Investigator: YOSHIDA Keito 独立行政法人高齢・障害・求職者雇用支援機構職業能力開発総合大学校(能力開発院、基, 能力開発院, 准教授 (70648914)
• Research Collaborator: KURIYAMA Yoshio
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 座屈拘束ブレース / 有限要素法 / 接触解析 / 摩擦 / 間隙

Outline of Final Research Achievements

Using finite element method, this study investigated Buckling Restrained Brace (BRB) behavior with large clearance to propose effective stiffness requirements that include consideration of the influences of friction and clearance of the BRB. The obtained results demonstrate that friction is negligible for calculating the deflection of the BRB cover at the center when subjected to axial force. In addition, the clearance influences both the deflection and the stiffness requirements of the BRB cover to sustain the complete performance of the BRB. Finally, the obtained results were compared with those of the AIJ codes. The results demonstrated that the AIJ codes estimate stiffness as less than FEM does for a large clearance in the case of a wide clearance.

Free Research Field

工学