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。为了研究当前设计指南建议的建筑物倒塌脆弱性，将拆除第一层的结构柱并监测建筑物的响应。这项研究将提供急需的全尺寸建筑实验数据，以验证文献中报告的计算研究结果并验证设计指南中规定的方法。该项目将通过解决以下问题来增进对渐进式倒塌过程的理解：1）柱子损失后建筑物内荷载的重新分配，2）板以及横向和纵向梁在桥接失效柱子上的贡献，以及3）决定的结构系统特征结构崩溃机制如何形成。实验数据将用于验证和完善先进的非线性分析工具，并开发可供实践工程师使用的简化模型和分析程序。这项研究的结果将能够更准确地评估建筑物倒塌的可能性，从而更有效地设计新建筑和改造现有建筑。模拟数据将用于评估线性静力分析设计指南推荐的放大系数。这项研究有望提供稀缺的、具有巨大价值的全尺寸实验数据，以增进工程对建筑物渐进倒塌的理解。该项目将涉及科技教育领域代表性不足群体的研究生和本科生。 将进行实践演示并在高中级别进行比赛。