基于CFAST平台的钢筋混凝土构件火灾损伤评估研究

Research on Fire Damage Assessment of Reinforced Concrete Members Based on CFAST Platform

为快速评估火灾后钢筋混凝土构件的损伤程度,利用CFAST平台快速建模和火灾模拟的优势,开发了用于快速评估钢筋混凝土构件火灾损伤的评估系统。评估系统主要由构件的数据库模块、计算模块和损伤评估模块3个部分组成。评估内容包括火灾后混凝土剩余强度、高温下钢筋屈服强度及弹性模量、楼板损伤深度等重要指标。此外,利用该系统快速评估了火灾后洗衣房楼板损伤程度,结果显示该系统具有建模简单、操作便捷,损伤评估快速等优点,可为火灾后钢筋混凝土构件的损伤评估提供参考。

To rapidly assess the fire damage of reinforced concrete members,this paper uses the advantages of rapid modeling and fire simulation of the CFAST platform to develop an assessment system for rapid assessment of fire damage of reinforced concrete members.The assessment system is mainly composed of three parts:database module,calculation module and damage assessment module.The assessment content includes important indicators such as the residual strength of the concrete after the fire,the yield strength and elastic modulus of the steel under high temperature,and the damage depth of the floor.In addition,the system is used to quickly assess the damage degree of the laundry room floor after the fire.The results show that the system has the advantages of simple modeling,convenient operation,and fast damage assessment,which can provide a reference for the fire damage assessment of reinforced concrete members.