摘要
本文提出:(1)经不同高温(20～700℃)后的混凝土试件应力—成变可用一数学模型表示;(2)火灾后 RC 柱在轴压下的应力—应变关系可用复合料料并联模型来分析;文章给出了相应的计算式。实验证明,实测的应力—应变曲线与用本文提出的模型计算结果吻合良好。
This paper presents:(1)the stress-strain curves of concrete-
specimens after different high temperatures(20℃—700℃)and
their mathematical expressions;(2)a parallel model of com-
posite material used to analyse the stress-strain relationship of
reinforced concrete column under axial compressive load after
fire and the mathematical formula for such relationship.Tests
show that the curves of stress-strain of reinforced concete
column after different temperatures measured on all its sides
agree satisfactorily with those calculated by the formula.
出处
《西南交通大学学报》
EI
CSCD
北大核心
1992年第5期84-90,共7页
Journal of Southwest Jiaotong University
基金
国家自然科学基金
