劲柔索张拉穹顶抗火反应非线性有限元分析

Nonlinear Finite Element Analysis of Tension-compression Cable Dome Against Fire

劲柔索张拉穹顶结构抗火工程是以结构具有一定的抗火时间为标准 ,通过模拟预测实际火灾特性 ,采用有限元双重非线性方法进行结构的整体和局部抗火反应静力分析 ,求得直到倒塌时的结构抗火全过程响应 ,并确定结构的临界温度状态和整体结构的抗火时间极限 ,从而对其实际抗火能力有一个理性的了解和认识 ,为经济、科学的结构综合防火设计提供理论依据。

In the standard of definite fire-resisting time, fire-resisting engineering of tension-compression cable dome is to obtain the whole-process response of structures under fire conditions until they collapse by overall and local fire-resisting analysis with dual nonlinear finite element method, and to quantify the critical temperature and fire-resisting time limit of the whole structures. In this way, the rational understanding of their practical fire-resisting ability could be obtained which provides a theoretical reference to an economical and scientific comprehensive fireproof design of the tension-compression cable dome.