利用CIB相关性和简单建模分析WTC火灾

IF 1.9 4区工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY

Journal of Fire Sciences Pub Date : 2021-02-20 DOI:10.1177/0734904121989670

J. Quintiere

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引用次数: 0

摘要

对隔间燃烧速率和平均气体温度的CIB相关性进行了准确性、实用性和通用性检验。将计算结果应用于WTC1的9/11火灾模型。具体信息来自NIST调查。研究表明，简单的传热模型可以预测NIST进行的WTC E119试验的特拉斯钢杆温度。CIB温度相关性和特拉斯钢模型用于预测WTC 1 96层火灾的燃烧条件，并与NIST的结果进行了比较。此处考虑20至40的燃料负荷 kg/m2，而NIST仅使用20。结果表明，完全绝缘的特拉斯杆的温度在较高的燃料负荷下会达到更高的值。临界温度为650°C的特拉斯钢可以支持桁架的破坏，作为塔架倒塌的理论。

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An analysis of the WTC fires using CIB correlations and simple modeling

CIB correlations for compartment burning rates and average gas temperatures are examined for accuracy, utility, and generality. The results are applied to modeling the fire on 9/11 in WTC 1. Specific information is used from the NIST investigation. It is demonstrated that simple heat transfer modeling can predict the truss steel rod temperatures for the E119 tests of WTC done by NIST. The CIB temperature correlation and steel truss modeling are used to predict burning conditions for the WTC 1 96th floor fire and compared to the NIST results. Here a consideration of fuel loads from 20 to 40 kg/m2 was considered compared to just 20 used by NIST. The results suggest that the fully insulated truss bar temperatures would achieve higher values for higher fuel loads. A critical steel truss temperature of 650°C could support failure of the trusses as a theory for the collapse of the towers.

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来源期刊

Journal of Fire Sciences 工程技术-材料科学：综合

CiteScore

4.00

自引率

0.00%

发文量

审稿时长

2.5 months

期刊介绍： The Journal of Fire Sciences is a leading journal for the reporting of significant fundamental and applied research that brings understanding of fire chemistry and fire physics to fire safety. Its content is aimed toward the prevention and mitigation of the adverse effects of fires involving combustible materials, as well as development of new tools to better address fire safety needs. The Journal of Fire Sciences covers experimental or theoretical studies of fire initiation and growth, flame retardant chemistry, fire physics relative to material behavior, fire containment, fire threat to people and the environment and fire safety engineering. This journal is a member of the Committee on Publication Ethics (COPE).