SEISMIC RETROFITTING METHOD FOR STEEL STRUCTURES BY KNEE BRACES JOINTED BY HIGH HARDNESS VISES

IF 4.3 3区工程技术 Q1 ENGINEERING, CIVIL

Journal of Civil Engineering and Management Pub Date : 2022-11-30 DOI:10.3846/jcem.2022.17228

H. Nakahara, Ding Nan, Takato Shimomura

引用次数: 0

Abstract

The authors have developed a new method of seismic retrofit for steel structures by adding knee braces which is jointed to the existing structures by vises with screw bolts made of high hardness metal. The slipping strength of the connection had been studied through axial tensile test of steel coupons jointed by the vises. The features of the connection by the vise are easy setup and providing the strength as much as by the normal bolts joint. An experimental study had been conducted for the specimens of steel frames retrofitted by knee braces. The knee brace was jointed to the steel frames by the vises. Two types of failure modes were investigated. One was slipping behavior at the connection and the other was bucking behavior at the knee braces. The strengths of the specimens were estimated by the simple calculations for the two types of failure modes.

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钢结构高硬度维斯连接膝撑抗震加固方法

提出了一种钢结构抗震加固的新方法，即在原有结构上增加膝撑，并用高硬度金属螺纹螺栓将膝撑连接在原有结构上。通过对榫头连接的钢板进行轴向拉伸试验，研究了接头的滑动强度。用虎钳连接的特点是容易安装，并提供与普通螺栓连接一样多的强度。对经膝撑加固的钢架试件进行了试验研究。膝部支架用钳子连接到钢架上。研究了两种失效模式。一种是连接处的滑动行为，另一种是膝盖支撑处的屈曲行为。在两种破坏模式下，对试件的强度进行了简单的计算。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Civil Engineering and Management ENGINEERING, CIVIL-

CiteScore

6.70

自引率

4.70%

发文量

审稿时长

1.7 months

期刊介绍： The Journal of Civil Engineering and Management is a peer-reviewed journal that provides an international forum for the dissemination of the latest original research, achievements and developments. We publish for researchers, designers, users and manufacturers in the different fields of civil engineering and management. The journal publishes original articles that present new information and reviews. Our objective is to provide essential information and new ideas to help improve civil engineering competency, efficiency and productivity in world markets. The Journal of Civil Engineering and Management publishes articles in the following fields: building materials and structures, structural mechanics and physics, geotechnical engineering, road and bridge engineering, urban engineering and economy, constructions technology, economy and management, information technologies in construction, fire protection, thermoinsulation and renovation of buildings, labour safety in construction.