开裂钢筋混凝土梁结构响应的敏感度分析

Sensibility Analysis of Structure Response of Cracking Reinforced Concrete Beam

阐述了钢筋混凝土结构在混凝土受拉区开裂后,受拉区混凝土退出作用,起作用的是钢筋,受拉钢筋面积是影响结构承载能力的主要随机变量。概率将采用响应面法和蒙特卡罗法(MonteCarlo),并对钢筋混凝土梁在混凝土受拉区开裂前后的结构响应进行了敏感度分析,给出了影响开裂钢筋混凝土梁结构响应的主要随机变量。

When reinforced concrete structure cracked in the tensile area, the steel worked instead of concrete. The area of tensile steel is the main random variable influencing the structure bearing ability. 2 methods of response section and Monte Carlo are adopted, and the structure response of reinforced concrete beam is analyzed on its sensibility before and after the creaking of the tensile area. The main random variable influencing the structure response of creaked reinforced concrete beam is also put forward in this paper.