SHEAR BEHAVIOR OF HSC BEAM REINFORCED WITH DIFFERENT SHEAR REINFORCEMENTS
If conventional reinforcements are used for high- strength concrete (HSC) structures, a large amount of the reinforcement must be required to compensate for the brittleness of HSC. This raises some structural problems such as steel congestion and an increase in self-weight. Therefore, alternative reinforcing materials and methods for HSC structures are needed. In this study, four full-scale beam specimens constructed with HSC (100MPa) were tested to investigate the effect of the different shear reinforcements on the shear behavior. These four specimens were reinforced for shear stirrups with normal and high strength steels, headed bars, and carbon fiber-reinforced polymer (CFRP) bars, respectively. In addition, steel fibers were added to the HSC in the two of the specimens to observe their beneficial effects. The use of high strength steels resulted in the improvement of the shear capacity since the shear resistance provided by the shear reinforcements and the bond strength were increased. The specimen reinforced with headed bars also showed a superior performance to the conventional steel rein-forced specimen due to the considerably high anchorage strength of headed bar. CFRP bars used in this research, however, seemed to be inadequate for shear reinforcement because of the inferior bond capacity.
Shear capacity high-strength concrete high-strength steel Headed bar CFRP bar steel fiber-reinforced concrete
J. M. Yang K. Y. Kwon H. S. Choi Y. S. Yoon
Department of Civil, Environmental and Architectural Engineering, Korea University, Seoul, Korea Department of Civil and Transportation Engineering, Chung Cheong University, Korea
国际会议
上海
英文
639-648
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）