摘要
为研究玻璃纤维管钢筋混凝土空心柱的轴心受压性能,本研究编制了空心柱轴心受压非线性分析程序,系统地分析了空心率、玻璃纤维管管壁厚度、混凝土强度等级及配筋率等主要参数对其轴心受压性能的影响,通过试验对所编制的程序进行验证,最后建立了适用于玻璃纤维管钢筋混凝土空心柱的轴压承载力计算公式。研究结果表明:利用所编制的轴心受压非线性分析程序与所建立的轴压承载力公式对玻璃纤维管钢筋混凝土空心柱轴心受压性能分析的计算结果与试验结果均吻合较好,轴心受压承载力随空心率的减小、玻璃纤维管管壁厚度的增加、混凝土强度的增大及配筋率的提高而增加,空心率对轴心受压承载力影响最大,其次是玻璃纤维管管壁厚度和混凝土强度等级,配筋率对其影响相对较小,研究结论可为该结构在设计和施工中提供参考依据。
In order to study the axial compression performance of glass fiber reinforced polymer(GFRP)tube filled with reinforced hollow concrete columns,a nonlinear analysis program was developed in thiswork.The effects of main parameters such as hollow rate,GFRP tube wall thickness,strength grade of concrete and reinforcement ratio were analyzed systematically.And the program is verified by tests.Finally,the calculation formula of the bearing capacity of GFRP tube filled with feinforced hollow concrete columns was established.The results show that the calculation results are in good agreement with the test results by using the nonlinear analysis program and the established bearing capacity formula.The bearing capacity of axial compression increases with the decrease of the hollow rate,the increase of GFRP tube wall thickness,along with the increase of concrete strength grade and reinforcement ratio.The hollow rate has the greatest influence on the bearing capacity of axial compression,followed by the thickness of GFRP tube wall thickness and the concrete strength grade.The reinforcement ratio has relatively small influence on it.The research conclusion can provide reference for the design and construction of the structure.
作者
张霓
郑晨阳
羡丽娜
王连广
ZHANG Ni;ZHENG Chenyang;XIAN Lina;WANG Lianguang(School of Civil Engineering,Liaoning Technical University,Fuxin 123000,China;School of Resources&Civil Engineering,Northeastern University,Shenyang 110819,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2021年第6期968-974,共7页
Journal of Materials Science and Engineering
基金
辽宁省教育厅育苗资助项目(LJ2020QNL006)
辽宁省教育厅基础资助项目(LJ2019JL018)。
关键词
玻璃纤维管钢筋混凝土
空心柱
轴心受压
非线性分析程序
承载力公式
GFRP tube filled with reinforced concrete
Hollow column
Axial compression
Nonlinear analysis program
Bearing capacity formula
