EFFECTS OF ULTRA HIGH STRENGTH REINFORCEMENT ON SEISMIC BEHAVIORS OF HIGH STRENGTH CONCRETE COLUMNS
Application of high strength concrete in high-rise structure has being a tendency at the present. In order to improve the ductility of high strength concrete, many studies are conducted all over the world. In this paper, effect of ultra-high-strength reinforcement on seismic behaviors of high strength concrete columns is investigated through numerical analysis and experiments. The results of the numerical analysis are compared with the experimental results. The comparison shows the numerical analysis results agree very well with the experiments. The results also shows the flexural behaviors of the columns can be effectively improved by use of mixed ultra high strength steel bars with yield strength above 1000MPa and normal strength steel bars for the longitudinal reinforcement. Moreover, the test also shows that the ductility of HSC columns, which are reinforced by ultra strength stirrup rebar, is better than the one by the normal reinforcement, especially in the case of high strength concrete columns with compression strength above C60. Finally, an experiential formula for the ductility, which is related to the yield strength of ultra high strength steel bars, was derived on the basic of test data and numerical analysis results.
High strength concrete ultra high strength steel bars columns seismic behaviors experimental studies ductility
X. Xiao F. L. Guan S. Yan
Department of Civil Engineering, Zhejiang University, Hangzhou, China School of Urban Construction, Department of Civil Engineering, Zhejiang University, Hangzhou, China School of Civil Engineering, Shenyang Architecture University, Shenyang, China
国际会议
上海
英文
534-542
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）