- 摘 要
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謝 濤 陳肇元
（清華大學(xué) 北京 100084）[提要] 通過在周期反復(fù)荷載作用下高強混凝土柱的受力性能試驗，考察了軸壓比、混凝土保護層厚度等因素對柱延性等性能的影響。結(jié)果表明：柱的延性隨軸壓比或混凝土保護層厚度的增加而減小。綜合本次試驗和以往對高強混凝土柱的試驗結(jié)果，提出了在不同設(shè)計軸壓比下的抗震最小配箍特征值。
[關(guān)鍵詞] 高強混凝土 柱 延性 地震性能 試驗研究The influence of the concrete cover depth and the axial force ratio on the ductile behavior of HSC columns is examined in this experimental investigation. It has been revealed that the ductility of the columns is reduced with the increasing of the axial force ratio and the concrete cover to reinforcement. By combining the test results of this research and previous results obtained in Tsinghua University, an empirical formula of ultimate drift ratio is proposed and the mimmum steel indices of the hoops in terms of different design axial force ratios and earthquake resistant grades are recommended.
Keywords: high strength concrete; ductility; column; seismic behavior; experimental research
