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.

该项目涉及对计划在哥伦布俄亥俄州立大学校园拆除的三座现有建筑物的物理测试，以研究建筑结构的进行性崩溃特征。为了研究当前设计指南建议的建筑物崩溃漏洞，将删除第一层的结构柱，并将监视建筑物的响应。这项研究将提供有关全尺度建筑物的急需的实验数据，以验证文献中报道的计算研究结果，并验证设计指南中规定的方法。该项目将通过解决：1）损失列后建筑物内部负载的重新分布，2）在桥梁上桥梁上的贡献以及在失败的柱上桥梁的贡献，以及3）结构系统特征，这些决定结构崩溃机制是如何形成的。实验数据将用于验证和完善高级非线性分析工具，并开发实践工程师可以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崩溃潜力更准确地评估，从而使新建筑物和现有建筑物的改造更有效地设计。模拟数据将用于评估线性静态分析设计指南建议的放大因子。这项研究有望提供稀缺的全尺度实验数据，具有巨大的价值，以提高工程学的理解，了解建筑物的渐进性崩溃。该项目将涉及科学和技术教育中代表性不足小组的研究生，本科生。 将进行动手示威，比赛将在高中级进行。