A suggested cause of the fire-induced collapse of the World Trade Towers

被引：30

作者：

Quintiere, JG ^{[1
]}

di Marzo, M

Becker, R

机构：

[1] Univ Maryland, Dept Fire Protect Engn, College Pk, MD 20742 USA

[2] Technion Israel Inst Technol, Fac Civil Engn, IL-32000 Haifa, Israel

来源：

FIRE SAFETY JOURNAL | 2002年 / 37卷 / 07期

关键词：

Structural failure;

D O I：

10.1016/S0379-7112(02)00034-6

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An analysis is presented that calculates the temperature of the steel truss rods in the World Trade Center towers subject to a fire based on the building ventilation factor. The CIB correlation is used for the fire. Conduction analyses are made taking into account variable properties for the steel and the insulation. A structural failure model is described based on compression buckling of the truss rods due to a reduction in the Young's modulus. The computed times for the estimated failure or incipient collapse of the floors in both towers has been computed as 105 +/- 20 min for WTC 1 (north) and 51 +/- 9 min for WTC 2 (south), compared to the collapse times from the aircraft impact of 104 and 56 min, respectively. The insulation thickness and the difference of 19.1 mm ((3)/(4)'') and 38.1 mm (1(1)/(2)'') between the two towers appear to have been the root cause of the collapses. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：707 / 716

页数：10