基于随机有限元可靠度的RC结构抗火设计参数优化方法

本文较详细地分析了各设计参数对RC结构抗火能力的影响。在已知结构抗火功能函数的基础上利用随机有限元可靠度的计算方法分析各参数对结构抗火能力的敏感性，根据各参数敏感性的不同，在设计时有意识地对该参数作一些较小的变动，结构的可靠度会明显的增加从而提高了结构的抗火能力。为RC结构抗火设计提供了一种参数优化的方法。

Optimization of Fire Resistance Design Parameters of RC Structure Based on Stochastic FE Reliability

This paper analyzes the impact of design parameters on the fire resistance ability of RC structure in detail. The sensitiveness of the parameters to the fire resistance ability based on the fire resistance function is examined by the stochastic finite element reliability computing method. It is found that according to the difference of sensitiveness among the parameters, the reliability and ability of fire resistance can be obviously increased by little conscious variation of each parameter in design. A parameter optimization method is thus proposed.