玻璃纤维增强聚合物管约束高强混凝土柱轴压试验研究  

Experimental investigation on axial compression performance of high strength concrete column confined by glass fiber reinforced polymer

作　　者：惠存[1] 李中涛 李丹丹 张勇波 海然[1] HUI Cun;LI Zhongtao;LI Dandan;ZHANG Yongbo;HAI Ran(School of Architecture and Civil Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China;School of Civil Engineering and Architecture,Zhengzhou University of Economics and Business,Zhengzhou 450007,China;China Construction Industrial Engineering and Technology Research Institute Co.,Ltd.,Bejing 101300,China)

机构地区：[1]中原工学院建筑工程学院,河南郑州450007 [2]郑州经贸学院土木建筑学院,河南郑州450007 [3]中建工程产业技术研究院有限公司,北京101300

出　　处：《混凝土》2024年第6期71-75,共5页Concrete

基　　金：国家自然科学基金(52208226);河南省高等学校重点科研项目(20A560026);河南省高等学校青年骨干教师培养计划项目(2019GGJS147)。

摘　　要：为研究玻璃纤维增强聚合物管约束高强混凝土柱的轴压性能,设计了6个不同长细比的试件并对其进行了轴心受压试验,分析了其破坏过程及破坏形态、承载力、位移、荷载-位移曲线、骨架曲线、荷载-应变曲线。研究表明:玻璃纤维增强聚合物管约束混凝土柱轴压承载性能优异,随着长细比的减小,试件的轴压承载力提升显著;加载后期,该组合结构的破坏模式为玻璃纤维增强聚合物管发生环向破坏,内部混凝土被压溃;玻璃纤维增强聚合物空管轴压承载力相对较低,破坏时脆性特征明显;随着长细比的减小,玻璃纤维增强聚合物管约束高强混凝土柱的承载力和刚度逐步增加,长细比对结构的承载能力影响显著。研究结果对玻璃纤维增强聚合物管约束高强混凝土柱的理论研究和工程应用具有一定的指导意义。To study the axial compression performance of high strength concrete column confined by glass fiber reinforced polymer,six specimens with different length to slenderness ratios were designed and tested under axial compression,and the failure process and failure form,bearing capacity,displacement,load-displacement curve,skeleton curve and load-strain curve were analyzed.The results show that the axial compression load bearing performance of the high strength concrete column confined by glass fiber reinforced polymer is excellent,and the axial compression load capacity of the specimen increases significantly with the decrease of the length to slenderness ratio.The failure mode of the combined structure in the late stage of loading is the circumferential damage of the glass fiber reinforced polymer tube,and the internal concrete is crushed.The axial compression load capacity of the glass fiber reinforced polymer hollow tube is relatively low,and the brittle characteristic is obvious when the damage occurs.With the decrease of the length to slenderness ratio,the load bearing capacity and stiffness of the high strength concrete column confined by glass fiber reinforced polymer gradually increase,and the length to slenderness ratio has significant influence on the load bearing capacity of the structure.The results of the study have some significance for the theoretical research and engineering application of high strength concrete column confined by glass fiber reinforced polymer.

关 键 词：玻璃纤维管 高强混凝土 轴压性能 弹塑性变形能力 试验研究 

分 类 号：TU528.572[建筑科学—建筑技术科学]