基于计算机仿真模拟系统的奥运场馆火灾安全分析

Analysis on the Fire Safety of Gymnasiums for 2008 Olympic Games Based on the Computer Simulation Technology

本文以奥运场馆改造项目为背景,利用计算机技术,基于性能化防火分析的思想,采用自行开发的火灾安全模拟系统SFSAS,对体育场馆的火灾安全性能进行了综合分析。该系统采用数值模拟方法,将火灾场景模拟分析与结构分析综合为一体,模拟了北京奥运会将要使用的北航体育练习馆在设定火灾下的火灾场景和结构温度场的分布,分析了其屋面钢结构体系在火灾作用下的结构反应和力学性能。通过分析发现,在火灾影响下,原有结构体系的平衡被打破,火灾下的结构破坏表现为整体性的破坏,因而需要进行全面的整体分析,而不能仅仅考虑局部的影响。实例分析证明,本文介绍的火灾安全模拟系统功能强大,运行方便,充分体现了计算机仿真技术在建筑防火分析中的优越性。

According to the requirement of the fire safety analysis of gymnasiums for 2008 Beijing Olympic Games,the exited gymnasiums which were constructed in the past years should be evaluated for their safety.In this paper,a newly developed integrated system-SFSAS was introduced to analyze the overall fire safety behavior of gymnasiums under fire conditions.This system adopts numerical simulation technology to execute the performance-based fire analysis ideas,and is able to perform the integrative process of fire ...