摘要
对冷弯薄壁型钢轴压构件整体稳定承载力的统计特征进行了量化描述,选择屈服强度和偏心距为基本随机变量,确定其数字特征和概率分布;基于Perry公式研究了随机性的传递过程,给出了稳定承载力的数字特征与概率分布规律。理论分析结果与试验结果进行对比,结果表明采用随机性的传播方法可以预测整体稳定承载力的统计特征。
In this paper,the statistical characteristics of the global stability bearing capacity of cold-formed thin-wall steel members under axial compression are described quantitatively.Firstly,the yield strength and eccentricity are selected as basic random variables.Then their numerical characteristics and probability distributions are determined.Based on Perry formula,the transfer process of randomness is studied.Afterward,the numerical characteristics and probability distribution law of stability bearing capacity are given.The comparison between the analytical results with test results indicates that the statistical characteristics of the global stability bearing capacity can be predicted through the randomness propagation method.
作者
徐迟
李杰
XU Chi;LI Jie(Department of Building Engineering,Tongji University,Shanghai 200092,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)
出处
《结构工程师》
2023年第1期15-19,共5页
Structural Engineers
关键词
冷弯薄壁型钢
稳定承载力
随机性
均值
标准差
概率密度函数
cold-formed thin-wall steel
stability bearing capacity
randomness
mean
standard deviation
probability density function
