首页> 外文期刊>Journal of Constructional Steel Research >Experimental investigation on octagonal concrete filled steel stub columns under uniaxial compression
【24h】

Experimental investigation on octagonal concrete filled steel stub columns under uniaxial compression

机译:八边形钢管混凝土单轴受压柱试验研究

获取原文
获取原文并翻译 | 示例
       

摘要

Concrete filled steel tubes (CFST) have been widely used in modern constructions. The cross-section shapes of circular and rectangular are mostly used. This paper presents an investigation on CFST with a new cross-section shape - octagonal shape which combines both advantages from circular and square cross-sections. In this study, 21 CFST stub columns were tested accompanying with 9 plain concrete columns under uniaxial compression. Three cross-section shapes, octagonal, circular and square sections were considered. In parallel, 10 associated CFST stub columns with octagonal cross-sections from literature were also complied. The measured steel yield strength was between 383 MPa to 485 MPa. Both normal and high strength concrete were used with measured cylinder compressive strengths ranging from 38 MPa to 112 MPa. The key investigation focuses on the relationship between the cross-section shapes and confinement effectiveness which can provide an understanding on the difference in load bearing capacity of CFST with those three section shapes. Design formulae for the cross-section capacity in the current code of practice were assessed by the experimental results and modification was proposed to the existing formula for circular cross-section which could be adopted for the CFST with octagonal cross-section. (C) 2018 Elsevier Ltd. All rights reserved.
机译:钢管混凝土(CFST)已广泛用于现代建筑中。通常使用圆形和矩形的横截面形状。本文以新的横截面形状-八边形对CFST进行了研究,该形状结合了圆形和正方形横截面的优点。在这项研究中,对21根CFST短柱和9根普通混凝土柱进行了单轴压缩试验。考虑了三种横截面形状:八边形,圆形和正方形。平行地,还汇编了文献中具有八边形横截面的10个相关CFST短柱。测得的钢屈服强度在383 MPa至485 MPa之间。普通混凝土和高强度混凝土均使用38 MPa至112 MPa的测得圆柱体抗压强度。重点研究的重点是截面形状与约束有效性之间的关系,可以了解CFST的承载力与这三种截面形状之间的差异。通过实验结果评估了现行操作规范中的横截面积设计公式,并对现有的圆形横截面公式进行了修改,该公式可用于具有八边形横截面的CFST。 (C)2018 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号