• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Behaviour of circularized and FRP wrapped hollow concrete specimens under axial compressive load
【24h】

Behaviour of circularized and FRP wrapped hollow concrete specimens under axial compressive load

机译：圆形和FRP包裹的空心混凝土试件在轴向压缩载荷下的行为

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Circularizing a square column by bonding concrete segments onto the sides of the column and then wrapping with fibre reinforced polymer (FRP) is considered an effective technique in strengthening square solid columns. This paper investigates the suitability of the circularization technique for strengthening square hollow concrete specimens. Eight specimens in two groups (four solid specimens and four hollow specimens) were cast and tested under axial compression. The first specimen from each group was the reference specimen. The corners of the second specimen were rounded to 20 mm radius and wrapped with two layers of carbon fibre reinforced polymer (CFRP). The third specimen was circularized with full length concrete segments and wrapped with two layers of CFRP. The fourth specimen was circularized with concrete segments shorter than the length of the specimen and wrapped with two layers of CFRP. The test results demonstrate that circularization of hollow specimens similar to the circularization of solid specimens reduces the stress concentration at the corners and enhances the ultimate load carrying capacity and ductility. The circularization with short concrete segments is more effective for hollow specimens than the circularization with full length concrete segments when file ductility is of main concern. (C) 2017 Elsevier Ltd. All rights reserved.
机译：通过将混凝土段粘结到圆柱体的侧面上然后用纤维增强聚合物（FRP）包裹来对方形圆柱体进行圆化处理被认为是加固方形实心圆柱体的有效技术。本文研究了圆化技术对方形空心混凝土标本加固的适用性。铸造两组中的八个试样（四个固体试样和四个空心试样）并在轴向压缩下进行测试。每组的第一个样本是参考样本。将第二个样品的角修圆至20 mm半径，并用两层碳纤维增强聚合物（CFRP）包裹。第三个标本用全长混凝土段圆化，并用两层CFRP包裹。将第四个标本用比标本长度短的混凝土段弄圆，并用两层CFRP包裹。测试结果表明，空心样品的圆形化与固体样品的圆形化相似，可减少拐角处的应力集中，并提高极限承载力和延展性。在主要考虑文件延展性的情况下，使用短混凝土段进行圆化对于空心标本比使用全长混凝土段进行圆化更为有效。 （C）2017 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