Method of reinforcement for joints between steel roofs and RC columns in existing buildings
Method of reinforcement for joints between steel roofs and RC columns in existing buildings
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既有建筑钢屋面与钢筋混凝土柱接缝加固方法
DOI：
10.1016/j.engstruct.2020.110255
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发表时间：
2020
影响因子：
5.5
通讯作者：
Takeuchi Toru
中科院分区：
文献类型：
--
作者：
Shimada Yuko;Yamada Satoshi;Kishiki Shoichi;Hasegawa Takashi;Takeuchi Toru
本研究的目的是验证用于连接钢屋顶和钢筋混凝土（RC）框架在现有建筑中的节点的加固方法的基础上，一系列的循环荷载试验。研究中研究了三种加固方法：一种是使用钢套和高强度钢筋（1型），另一种是使用钢套和后安装粘结锚（2型），第三种是使用钢板和后安装粘结锚（3型）。结果表明，类型-1的方法是最有效的增加力，因为剪切力可以从钢筋混凝土框架转移到钢屋顶，因此，钢夹克可以支持整个顶部的钢筋混凝土柱和集成的屋顶节点到钢筋混凝土框架。而第二类和第三类方法由于剪力不能传递，混凝土容易破坏，对钢筋混凝土柱的加固效果不佳。
The aim of this study was to validate the reinforcement method used for joints connecting a steel roof and a reinforced concrete (RC) frame in existing buildings based on a series of cyclic loading tests. Three reinforcement methods were investigated in the study: one using a steel jacket and high-strength steel rods (Type-1), another using a steel jacket and post-installed adhesive anchors (Type-2), and a third using a steel plate and post-installed adhesive anchors (Type-3). The results obtained show that the Type-1 method is most effective in increasing force, because shear force can be transferred from the RC frame to the steel roof; thus, a steel jacket can support the entire top of the RC column and integrate the roof joints into the RC frame. The Type-2 and Type-3 methods, however, are not effective in the reinforcement of RC columns because shear force cannot be transferred, and concrete failure occurred easily.