预应力钢带加固混凝土圆柱轴压性能试验

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (7): 2200-2208.

预应力钢带加固混凝土圆柱轴压性能试验

张波^1,2, 杨勇², 夏泽宇^2,3

1.陕西理工大学土木工程与建筑学院,汉中 723001;
2.西安建筑科技大学土木工程学院,西安 710055;
3.周口市发展和改革委员会,周口 466000

收稿日期:2020-09-14 修回日期:2020-10-27 出版日期:2021-07-15 发布日期:2021-08-04
通讯作者: 杨勇,博士,教授。E-mail:yyhhp2004@163.com
作者简介:张波(1976—),男,博士,教授。主要从事工程结构抗震与加固研究。E-mail:zhangyc_2005@126.com
基金资助:
陕西省教育厅产业化项目(14JF014)

Axial Compressive Performance of Concrete Column Reinforced by Prestressed Steel Strips

ZHANG Bo^1,2, YANG Yong², XIA Zeyu^2,3

1. School of Civil Engineering & Architecture, Shaanxi University of Technology, Hanzhong 723001, China;
2. College of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China;
3. Zhoukou Municipal Development and Reform Commission, Zhoukou 466000, China

Received:2020-09-14 Revised:2020-10-27 Online:2021-07-15 Published:2021-08-04

摘要/Abstract

摘要： 通过32个加固柱及4个对比柱试件的轴压性能试验,研究了钢带间距、层数对承载力及变形能力的影响。试验结果表明,混凝土圆柱试件经预应力钢带加固后,不仅可以提高柱的轴压承载力,还能使加固柱具有良好的变形能力,可有效改善其轴压性能。在试验研究的基础上,分析了预应力钢带加固混凝土柱轴压受力机理,提出了预应力钢带加固混凝土圆柱极限强度模型,计算值与试验值吻合程度较好。

关键词: 预应力钢带, 混凝土圆形截面柱, 轴压性能, 加固技术

Abstract: Thirty-two reinforced columns and four unreinforced columns were tested under axial compression. The effects of the steel strip spacing and layer number on the bearing capacity and deformation capacity were investigated. Experimental results show that the cylindrical concrete column specimens with prestressed steel strips can effectively improve the axial compression performance. Not only the bearing capacity of columns under axial compression is improved, but also the deformation capacity is improved as well. Based on the experimental results, the mechanism of the concrete column with prestressed steel strip was discussed. The ultimate strength model of the cylinder concrete column with prestressed steel strips under axial compression was proposed, and the calculated value is in good agreement with the experimental value.

Key words: prestressed steel strip, cylindrical concrete column, axial compressive performance, reinforcement technique

中图分类号:

TU375.3

张波, 杨勇, 夏泽宇. 预应力钢带加固混凝土圆柱轴压性能试验[J]. 硅酸盐通报, 2021, 40(7): 2200-2208.

ZHANG Bo, YANG Yong, XIA Zeyu. Axial Compressive Performance of Concrete Column Reinforced by Prestressed Steel Strips[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2200-2208.

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