SGER: Gathering and Archiving Data on the Response of a Reinforced Concrete Building Subjected to Impact and Fire Loads

正在进行的工作包括对 2001 年 9 月 11 日五角大楼大楼的结构行为进行分析。关于观察到的建筑物行为，有两个尖锐的问题值得调查：1。受到波音 757 的撞击后，这座钢筋混凝土建筑的底层约 30 根柱子立即受损。该结构没有立即倒塌，而是保持站立状态，以便其居住者获救。防止渐进式倒塌的结构属性是什么？2．波音 757 以超过 750 英尺/秒的速度撞入大楼。它具有巨大的动能。碎片在 300 英尺处停止。结构的哪些特征是吸收能量的主要因素？所获得的见解可作为一组提供。最终报告将包括开发一个包含数据及其研究的网站。在专业协会会议上进行演讲。

The ongoing work involves the analysis of the structural behavior of the Pentagon building on 11 September 2001. There are two poignant questions about the observed behavior of the building that deserve investigation:1. Immediately upon impact of the Boeing 757, the reinforced concrete building lost approximately 30 columns in the ground story. Instead of an immediate collapse the structure remained standing to allow its occupants to be rescued. What were the structural attributes that prevented progressive collapse?2. The Boeing 757 crashed into the building at a speed exceeding 750 ft/sec. It had enormous kinetic energy. The debris was stopped in 300 ft. What characteristics of the structure were the main factors in absorbing the energy?The insights gained are made available a Group. The final report will include the development of a web site containing the data and their studies. Presentations are made at professional society meetings.