高强混凝土柱延性的试验研究

Study on Ductility of Reinforced High Strength Concrete Columns

本文通过４８根高强混凝土柱和普通混凝土柱（用于对比）在单调荷载和周期反复荷载作用下受力性能的试验研究，分析了混凝土强度、轴压比、配箍率等因素对构件延性的影响。指出影响柱延性诸因素中最主要的因素是轴压比。并提出了在满足构件有限延性的基础上（μ△≥３）轴压比的限值及相应的配箍率。

Based on the experimental research of 48 reinforced high strength concrete columns and ordinary strength concrete columns under monotonic and cyclic loading, the factors which affect the ductility such as the concrete strength, the axial compression ratio, the volumetric percentage of stirrups, etc. have been analyzed. It is found that the'axial compression ratio is the most important factor that affects ductility. Besides, the limited values of axial compression ratio for different kinds of buildings and their relative volumetric percentage of stirrups are also proposed under the condition of limited ductility (μ△=3) in this paper.