...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Construction and Building Materials >Cyclic and monotonic behavior of FRP confined concrete rectangular prisms with different aspect ratios
【24h】

Cyclic and monotonic behavior of FRP confined concrete rectangular prisms with different aspect ratios

机译：不同长宽比的FRP约束混凝土矩形棱柱的循环和单调行为

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

FRP confinement of concrete columns is one of the most common methods for enhancing both the strength and ductility. The optimal design of the FRP confined concrete rectangular columns requires a good comprehension of their cyclic and monotonic stress-strain behavior. In this study the results of the tests on 18 rectangular prisms with different aspect ratios are presented and the effects of this parameter on cyclic and monotonic behavior of prisms are investigated. Test results indicate that for prisms with different aspect ratios, the monotonic stress-strain curve is approximately tangent to the upper boundary of the cyclic stress-strain curve. Other important results of this study are linearity of relationship between the plastic strain and the envelope unloading strain, the independence of the plastic strain and stress deterioration ratio from the aspect ratio, increase of the axial strain in the early stage of unloading paths, fixation of the plastic strain after repetition of 8 cycles and expansion of the failure area as a result of a decrease in aspect ratio. Examination of the ultimate condition of rectangular prisms (specimen's failure) shows that the FRP hoop rupture strains of the prisms are smaller than the one obtained from tensile coupon test and also when a prism is under monotonic loading, the ultimate axial strain and confined concrete strength are smaller than when it is under cyclic loading.
机译：FRP限制混凝土柱是增强强度和延性的最常用方法之一。 FRP约束混凝土矩形柱的最佳设计需要对它们的循环和单调应力应变行为有一个很好的理解。在这项研究中，给出了对具有不同纵横比的18个矩形棱镜的测试结果，并研究了该参数对棱镜的循环和单调行为的影响。测试结果表明，对于具有不同长宽比的棱镜，单调应力-应变曲线与循环应力-应变曲线的上边界近似相切。该研究的其他重要结果是塑性应变与包络线卸载应变之间的线性关系，塑性应变和应力劣化比与长宽比的独立性，卸载路径早期的轴向应变增加，重复8个循环后的塑性应变，以及由于长宽比降低而导致的破坏区域扩大。检验矩形棱柱的极限状态（试件破坏）表明，棱柱的FRP环向断裂应变小于拉伸样板试验获得的值，并且当棱镜在单调载荷下时，其极限轴向应变和受限的混凝土强度比在周期性负载下小。

著录项

  • 来源
    《Construction and Building Materials》 |2013年第3期|118-125|共8页
  • 作者

    R. Abbasnia; F. Hosseinpour; M. Rostamian; H. Ziaadiny;

  • 作者单位

    Department of Civil Engineering, Iran University of Science and Technology, Tehran 16844, Iran;

    Department of Civil Engineering, Iran University of Science and Technology, Tehran 16844, Iran;

    Department of Civil Engineering, Iran University of Science and Technology, Tehran 16844, Iran;

    Department of Civil Engineering, Iran University of Science and Technology, Tehran 16844, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    confined concrete prisms; FRP; cyclic loading; stress-strain behavior; aspect ratio;

    机译：承压混凝土棱柱;玻璃钢;循环加载应力应变行为;长宽比;

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