Deformation capacity evaluation of steel frame considering spatial behavior

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06294
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: KANAO Iori 京都工芸繊維大学, デザイン・建築学系, 教授 (80372564)
• Research Collaborator: YU Zheng 中冶京誠工程技術有限会社, 博士研究員 ; OGAWA Yuko 京都工芸繊維大学, 大学院, 大学院生 ; NAKAI Maho 京都工芸繊維大学, 大学院, 大学院生 ; HE Tianrui 京都工芸繊維大学, 大学院, 大学院生 ; ZHAO Xiaojie 京都工芸繊維大学, 大学院, 大学院生 ; OSHITA Makoto 京都工芸繊維大学, 大学院, 大学院生 ; KOBASHI Motoko 京都工芸繊維大学, 学部生
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 鋼構造 / 横座屈 / 横補剛 / 面外変形 / 立体骨組

Outline of Final Research Achievements

This research proposed the lateral bracing method restraining out-of-plane deformation. Moreover, the behavior of the beams connected by lateral bracings in a frame was clarified. The following information is obtained:
(1) In this proposed method, two lateral bracings are located at each beam-end and the remainder as equal distance of lb/iy≦140. This method ensures the plastic deformation capacity of the beam and restrains the out-of-plane deformation below 30mm. The required stiffness of lateral bracing for proposed method is equal to the current design code. (2) According to analysis and experiment, although the axial force of the lateral bracing arranged between two beams in a frame is small, bending moment of the lateral bracing is large. In order to restrain the lateral buckling of the beam in a frame, the possibility was shown that the flexural stiffness of lateral bracing is important.

Free Research Field

建築構造・鋼構造