摘要
现有的设计规范对钢筋混凝土轴压柱的设计只给出了承载力计算公式,而没有考虑混凝土的徐变使柱子产生的塑性变形。对超静定结构这种塑性变形将引发整个结构内力的重新分布,从而使相关的承重梁出现严重的超载现象。本文从理论上探讨了混凝土的徐变对钢筋混凝土柱变形的影响,导出了柱极限变形的计算公式,并且为了控制柱的塑性变形,对现有的柱承载力设计公式提出了修正建议,供结构设计人员参考。
In this paper, the influence of wriggling of concrete on the strain of reinforced concrete column has been explored, the calculating formula of limit strain of the column has been derived, and the suggestion of modification on the present design formula of column has been made for controlling the plastic strain of the column, which affords reference to structure engineers.
出处
《南阳理工学院学报》
2009年第1期44-47,共4页
Journal of Nanyang Institute of Technology
关键词
混凝土
徐变
钢筋混凝土柱
变形分析
Concrete
Wriggling
Reinforced concrete column
Strain analysis
