混合配筋混凝土柱最小配筋率研究

【作者】 屈文俊； 屈俊楠； 朱鹏； 庞蕾；

【机构】 同济大学建筑工程系； 长安大学建筑工程学院；

【摘要】 进行了2根混合配筋混凝土柱的轴心受压试验和10根混合配筋混凝土柱的偏心受压试验,验证了混合配筋混凝土柱的受压性能与传统钢筋混凝土柱相似。对比分析了各国规范对钢筋混凝土柱的最小配筋率取值原则与限值。依据混合配筋混凝土柱的破坏特征提出了按等效刚度计算等效配筋率的建议公式。参照钢筋混凝土柱最小配筋率的取值原则、取值方法、FRP延性差的特点,以各国规范的取值为样本,推荐了混合配筋混凝土柱最小配筋率的限值。更多还原

【Abstract】 The axial compression test of 2 mixed reinforced concrete columns and the eccentric compression test of 10 mixed reinforced concrete columns are carried out.It is proved that the compressive behavior of the mixed reinforced concrete column is similar to that of the traditional reinforced concrete column.The principles and limits of minimum reinforcement ratio for reinforced concrete columns are analyzed and compared.According to the failure characteristics of mixed reinforced concrete columns,a formula for calculating the equivalent reinforcement ratio according to the equivalent stiffness is put forward.Referring to the principle of choosing the minimum reinforcement ratio of reinforced concrete column,the method of choosing value and the difference of FRP ductility,the limit value of the minimum reinforcement ratio of the mixed reinforced concrete column is recommended according to the standard values of various countries.更多还原