摘要
为了研究碳纤维增强聚合物(CFRP)部分包裹的圆钢管混凝土短柱轴压性能和破坏机理,本文进行了8根组合短柱的轴压试验,探讨了钢管强度、CFRP布包裹层数、CFRP布包裹间距等参数对试件轴压性能的影响。通过对破坏模式、轴压荷载(N)-轴向变形(δ)曲线、钢管和CFRP应变响应等试验结果的分析,揭示了CFRP部分包裹圆钢管混凝土轴压短柱的受力机理,提出了组合短柱的轴压承载力计算公式,研究结果将为CFRP在实际工程中的应用提供科学依据。
To explore axial compressive and failure mechanism of concrete-filled circular steel tube stub columns partially-wrapped by carbon fiber reinforced polymer(CFRP),this paper carried out axial compression tests on 8 combined stub columns,and discussed the influence of steel strength,number of CFRP layer and spacing of CFRP strip on the axial compression performance of the specimens.Through the analysis of the failure mode,axial load(N)-axial deformation(δ)curve,steel tube and CFRP strain response,SEI,DI and other test results,the force mechanism of the CFRP partially-wrapped concrete-filled circular steel tube stub column under axial compression is revealed,the calculation formula of the axial compression bearing capacity of the combined stub column is proposed.The research results will provide a scientific basis for the application of CFRP in actual engineering.
作者
黄春晓
王伟
王颖
潘福婷
HUANG Chunxiao;WANG Wei;WANG Ying;PAN Futing(Key Laboratory of Building Structure of Anhui Higher Education Institutes, Anhui Xinhua University, Hefei, Anhui 230088, China;School of Civil and Environmental Engineering, Anhui Xinhua University, Hefei, Anhui 230088, China;Anhui Water Supply and Drainage Design and Research Institute Co., Ltd, Hefei, Anhui 230011, China)
出处
《中州大学学报》
2020年第4期115-119,共5页
Journal of Zhongzhou University
基金
安徽新华学院校级重点科研项目(2018zr002)
安徽省教育厅科研重点项目(KJ2019A0885)
国家级大学生创新创业训练计划(201812216041)。
关键词
碳纤维增强聚合物(CFRP)
部分包裹
圆钢管混凝土短柱
轴压试验
承载力
carbon fiber reinforced polymer(CFRP)
partially-wrap
concrete-filled circular steel tube stub column
axial compression test
bearing capacity
