【摘要】 通过九根强度68.3～76.5MPa,采用箍筋约束的高强约束混凝土框架柱在低周反复作用下的试验研究,分析了影响高强混凝土框架柱延性的主要因素。着重提出了在满足构件有限延性基础上的,可用于工程设计的轴压比限值和配箍水平限值。在试验结果与按照文献[6]建议方法的计算对比基础上,提出了高强约束混凝土压弯构件正截面强度计算方法的建议。更多还原

【Abstract】 On the basis of experimental results on nine hoop reinforced high strength concrete frame columns with compressive strength of 68.3-76.5 MPa and vertically loaded by low period repeated load, the key factors mostly affecting the ductility of the column are analyzed in this paper. The authors give emphasis on presenting the limit of axial compression ratio and hoop reinforcement quantity. Based on comparison of the experimental results with the calculation ones by the method according to literature, some suggestions are given to calculate the strength of lateral section of restricted high strength concrete compressive-bending elements.更多还原