玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (1): 5-11.

• 基础研究 •    下一篇

CFRP布约束H型钢部分外包混凝土柱的试验与设计方法研究

邓宇, 甘德丽*, 张鹏, 杨希涛   

  1. 广西科技大学土木建筑工程学院,柳州545006
  • 收稿日期:2017-08-07 出版日期:2018-01-20 发布日期:2018-01-20
  • 通讯作者: 甘德丽(1992-),女,主要从事结构工程等方面的研究,2417478536@qq.com。
  • 作者简介:邓宇(1978-),男,博士,副教授,主要从事结构工程等方面的研究。
  • 基金资助:
    国家自然科学基金资助项目(51568008);中国博士后科学基金项目(2017M613273XB);广西自然科学基金项目
    (2015GXNSFAA139263)

EXPERIMENTAL STUDY AND DESIGN METHOD OF CARBON FIBER CLOTH CONFINED PEC COLUMN

DENG Yu, GAN De-li*, ZHANG Peng, YANG Xi-tao   

  1. Department of Civil Engineering and Architecture, Guangxi University of Science and Technology, Liuzhou 545006, China
  • Received:2017-08-07 Online:2018-01-20 Published:2018-01-20

摘要: 提出H型钢部分外包混凝土柱(PEC柱)结构,通过对18根PEC柱试件的轴心和偏心受压试验,研究了不同的碳纤维布粘贴层数、不同的碳纤维布粘贴间距、不同的偏心距分别对PEC柱的承载能力和破坏模式的影响。研究发现:粘贴碳纤维布的PEC柱承载力大于不粘贴碳纤维布的PEC柱;相同碳纤维布粘贴间距时,粘贴两层布比单层布的PEC柱承载力有所提高;碳纤维布粘贴间距越小,PEC柱的极限承载力越大;所有试件柱的极限承载力随偏心距的增大而降低。基于试验数据,提出承载力计算公式。

关键词: CFRP, H型钢部分外包混凝土柱, 受压试验, 承载能力, 破坏模式

Abstract: This paper presents the structure of H-beam partially packed concrete column (PEC column). Based on the axial and eccentric compression tests of 18 PEC column specimens, the effects of different carbon fiber sheet adhesive layers, different carbon fiber cloth paste spacing and different eccentricity on PEC column bearing capacity and failure mode were studied. It was found that the PEC column with carbon fiber cloth was larger than the PEC column with no carbon fiber cloth. Under the same carbon fiber cloth paste spacing, the bearing capacity of the two layers of cloth was larger than that of the single layer of PEC column. The smaller the bonding distance of the carbon fiber cloth, the greater the ultimate bearing capacity of the PEC column. The ultimate bearing capacity of all the test pieces decreases with the increase of eccentricity.Based on the test data, the calculation formula of bearing capacity is put forward.

Key words: CFRP, H steel, partially encased concrete column, compression test, bearing capacity, failure mode

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