Study on Seismic Strengthening of Steel Structure Framework withRemovable Knee Brace Reinforcement

可拆卸护膝加固钢结构框架抗震加固研究

• 批准号: 22560575
• 负责人: EBATO Kazumasa
• 金额: $ 2.5万
• 依托单位: Kanto Gakuin University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560575/
• 关键词: 鋼構造; 柱・梁接合部; 半剛接合部; 方杖補強; 耐震設計; 半剛接合; 有限要素解析; 耐震補強

An experiment was performed on a subassemblage specimen of an interior column joint with knee brace reinforcement, and the experimental results verified the increase in strength and stiffness of the beam-to-column joint due to the knee brace reinforcement. While knee braces are effective for stiffening and strengthening the overall frameworks, the existing beams or columns are assumed to still plastify during strong earthquakes because of the high strength of the knee braces. A better retrofit is possible if the seismic performance could be upgraded without assuming the yielding of beams or columns. A new type of knee brace member with a built-in comb-shaped damper is proposed and discussed in this study.

通过对一个内柱节点的试件进行试验，验证了内柱节点的强度和刚度随内柱节点加强而提高的规律。虽然膝支撑对于加固和加强整体框架是有效的，但是由于膝支撑的高强度，假设现有的梁或柱在强烈地震期间仍然塑性化。如果在不假定梁或柱屈服的情况下可以提高抗震性能，则可以进行更好的改造。本研究提出一种新型的内建梳形阻尼器之膝支撑构件，并加以探讨。

项目成果

せん断入力型方杖補強部材の実験的研究

剪力输入型手杖加固件的试验研究

• 发表时间: 2012
• 作者: 寺井亮;神田順;山中英生他;本間小百合,江波戸和正,原田幸博
• 通讯作者: 本間小百合,江波戸和正,原田幸博

せん断入力型方杖補強部材の実験的研究 （繰返し載荷実験）

剪力输入型手杖加固构件试验研究（重复加载试验）

• 发表时间: 2013
• 作者: 本間小百合;原田幸博;上村隆介;江波戸和正;本間小百合
• 通讯作者: 本間小百合