Shear-critical reinforced concrete columns under various loading rates

This paper presents an experimental study of shear-governed reinforced concrete columns subjected to different loading rates. Four typical short columns were tested cyclically with loading rate of 0.05, 1, 3, and 5 Hz, simulating seismic load. Test result indicated that the loading rate does not aff...

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Bibliographic Details
Published in:Frontiers of Structural and Civil Engineering 2014-12, Vol.8 (4), p.362-372
Main Authors: WITARTO, Witarto, LU, Liang, ROBERTS, Rachel Howser, MO, Y. L., LU, Xilin
Format: Article
Language:English
Subjects:
Carbon Nano-Fiber Aggregates (CNFAs)
Cities
Civil Engineering
Countries
Engineering
finite element analysis
loading rate
OpenSees
Regions
reinforced concrete columns
Research Article
shear failure
加载测试
加载速率
地震荷载
有限元分析模型
混凝土柱
纤维集合体
负荷率
钢筋
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Summary:This paper presents an experimental study of shear-governed reinforced concrete columns subjected to different loading rates. Four typical short columns were tested cyclically with loading rate of 0.05, 1, 3, and 5 Hz, simulating seismic load. Test result indicated that the loading rate does not affect the column behavior when the rate is up to 5 Hz. Furthermore, Carbon Nano-Fiber Aggregates (CNFAs) were utilized as internal sensors to detect the damage in the column. The test result shows that the CNFAs work well sensing the structural behavior. The CNFA output was further quantitatively correlated to the structural damage level. Finally, a finite element analytical model was constructed to describe the behavior of short columns with shear failure. The analytical model successfully modeled the cyclic loading test results.
ISSN:2095-2430
2095-2449
DOI:10.1007/s11709-014-0083-y