Experimental and Computational Simulation of Progressive Collapse of Buildings

建筑物渐进倒塌的实验和计算模拟

• 批准号: 1130397
• 负责人: Halil Sezen
• 金额: $ 15万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1130397&HistoricalAwards=false
• 关键词: Experimental; Computational; Simulation; Progressive; Collapse

The project involves physical testing of three existing buildings that are scheduled for demolition on the campus of The Ohio State University in Columbus to study the progressive collapse characteristics of building structures. To study the building collapse vulnerabilities as recommended by the current design guidelines, the structural columns in the first stories will be removed and response of the buildings will be monitored. This study will provide much needed experimental data on full-scale buildings to validate the results of computational studies reported in the literature and to verify the methodologies prescribed in the design guidelines. The project will improve understanding of progressive collapse process by addressing: 1) redistribution of loads within the building following loss of columns, 2) contribution of slabs and transverse and longitudinal beams in bridging over the failed column, and 3) structural system characteristics that determine how a structural collapse mechanism forms. The experimental data will be used to validate and refine advanced nonlinear analysis tools and to develop simplified models and analysis procedures that can be used by practicing engineers. The results of this research will enable more accurate assessment of collapse potential of buildings and, as a result, will lead to more efficient design of new buildings and retrofit of existing buildings. Simulation data will be used to evaluate the amplification factors recommended by the design guidelines for linear static analysis.This research is expected to provide scarce full-scale experimental data of immense value to advance engineering understanding about progressive collapse of buildings. The project will involve graduate, undergraduate students from underrepresented groups in science and technology education. Hands-on demonstrations will be given and competitions will be conducted at high school level.

该项目涉及对哥伦布市俄亥俄州立大学校园内计划拆除的三座现有建筑进行物理测试，以研究建筑结构的渐进倒塌特征。为研究现行设计指引建议的建筑物倒塌易损性，将拆除第一层的结构柱，并监测建筑物的反应。这项研究将提供急需的全尺寸建筑物的实验数据，以验证文献中报告的计算研究的结果，并验证设计指南中规定的方法。该项目将通过以下方面提高对逐步倒塌过程的理解：1)柱丢失后建筑物内荷载的重新分配，2)板和横梁和纵梁在故障柱上的桥接作用，以及3)决定结构倒塌机制形成的结构体系特征。实验数据将用于验证和改进先进的非线性分析工具，并开发可供执业工程师使用的简化模型和分析程序。这项研究的结果将使建筑物的倒塌可能性得到更准确的评估，从而使新建筑物的设计和现有建筑物的翻新更有效率。模拟数据将被用来评估线性静力分析设计指南所建议的放大系数。这项研究有望提供稀缺的、具有巨大价值的足尺试验数据，以促进对建筑物连续倒塌的工程理解。该项目将涉及来自科技教育领域代表性不足群体的研究生和本科生。将进行动手演示，并在高中阶段进行比赛。