CFRP-PCPs复合筋混凝土柱偏压柱受力性能的试验研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (3): 36-43.

CFRP-PCPs复合筋混凝土柱偏压柱受力性能的试验研究

钟卿瑜, 张鹏, 陈华, 康侃

广西科技大学土木建筑工程学院,柳州545006

收稿日期:2016-11-02 出版日期:2017-03-25 发布日期:2017-03-28
作者简介:钟卿瑜(1989-),女,硕士实验师,二级结构工程师,主要从事复合材料在结构中的应用方面的研究。
基金资助:
国家自然科学基金项目(51168006);广西自然科学基金项目(2015GXNSFAA139263);广西高校科学技术研究项目(KY2015LX175) ;广西自然科学基金青年基金项目(2013GXNSFBA019261);广西科技大学科学基金项目(校科自20161322);2016年国家级大学生创新创业训练计划(201610594046)

EXPERIMENTAL STUDY OF CFRP-PCPs COMPOSITE REINFORCED CONCRETE ECCENTRIC COMPRESSION COLUMNS

ZHONG Qing-yu, ZHANG Peng, CHEN Hua, KANG Kan

School of Civil Engineering and Architecture, Guangxi University of Science and Technology, Liuzhou 545006, China

Received:2016-11-02 Online:2017-03-25 Published:2017-03-28

摘要/Abstract

摘要： 通过15根碳纤维预应力棱柱体复合筋(Carbon Fiber Reinforced Plastics Prestressed Concrete Prisms,简称“CFRP-PCPs复合筋”)混凝土柱进行偏心受压试验,考虑相对偏心距、复合筋配筋率、CFRP筋张拉控制应力和普通钢筋配筋率4个变化参数对复合筋混凝土柱受力性能的影响。观察了试件的受力过程及破坏形态,获取了试件开裂荷载、极限承载力、荷载-侧向变形曲线等重要数据,分析了4个变化参数对CFRP-PCPs复合筋混凝土柱偏心受压作用下的开裂荷载和极限承载力的影响规律。研究结果表明:CFRP-PCPs复合筋混凝土偏压柱与普通钢筋混凝土偏压柱的受力过程及破坏形态相似,试件的开裂荷载和极限承载力均随相对偏心距的增大而降低;提高CFRP筋张拉控制应力、增大复合筋配筋率和普通钢筋配筋率均能有效提高CFRP-PCPs复合筋混凝土柱的开裂荷载和极限承载力。

关键词: CFRP-PCPs复合筋, 偏心受压柱, 偏心距, 承载力, 试验研究

Abstract: In order to study the mechanical performance of CFRP-PCPs composite reinforced concrete eccentric compression columns, fifteen specimens are designed for eccentric loading tests. Four variable factors such as eccentricity, ratio of composite reinforcement, tension control stress of CFRP bars and general reinforcement ratio are taken into consideration. According to the test, the stress distribution, cracking load, ultimate bearing capacity, load-strain curve and other important data are obtained, and the influence of four variable factors on cracking load and the ultimate capacity of CFRP-PCPs composite reinforced concrete eccentric compression columns is analyzed. The results show that the damage process and failure mode of a CFRP-PCPs composite reinforced concrete eccentric compression column are similar to those occurred in an ordinary reinforced concrete eccentric compression column, where the cracking load and the limited supporting capacity decreased gradually with the increase of eccentricity. The cracking load and the limited supporting capacity of CFRP-PCPs composite reinforced concrete columns can be improved effectively by increasing the stress of tension control, increasing the ratio of CFRP-PCPs composite reinforcement and ordinary steel bars.

Key words: CFRP-PCPs composite reinforcement, eccentric compression column, eccentricity, bearing capacity, experimental study

中图分类号:

TB332

钟卿瑜, 张鹏, 陈华, 康侃. CFRP-PCPs复合筋混凝土柱偏压柱受力性能的试验研究[J]. 玻璃钢/复合材料, 2017, 0(3): 36-43.

ZHONG Qing-yu, ZHANG Peng, CHEN Hua, KANG Kan. EXPERIMENTAL STUDY OF CFRP-PCPs COMPOSITE REINFORCED CONCRETE ECCENTRIC COMPRESSION COLUMNS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(3): 36-43.

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