Elevated Temperature Performance of Beam End Framing Connections

梁端框架连接的高温性能

• 批准号: 0700682
• 负责人: Michael Engelhardt
• 金额: $ 30.98万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-15 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0700682&HistoricalAwards=false
• 关键词: Elevated; Temperature; Performance; Beam; End

The research will develop experimental data, analytical models, and design models for the performance of beam end framing connections at elevated temperature. The work will include thermal-structural analysis of steel building frames to characterize the force and deformation demands at beam end connections, extensive high temperature experiments on connection subassemblies, and detailed finite element analysis of connections. This research will be coordinated with a parallel effort underway at National Cheng Kung University in Taiwan, where tests will be conducted on complete full-scale beams with end connections and the development of catenary forces, in a large-scale structural-fire test furnace. No such structural-fire test facility exists in the US. The coordination of these two test programs will provide benchmark quality data on the high temperature performance of beam framing connections at multiple scales, and will lead to significantly enhanced understanding of beam connection behavior under fire conditions.This research will fill an important gap in the current knowledge base on the performance of structural building components exposed to fire and will contribute towards enabling performance-based engineered fire protection of building structures in the US, with an ultimate goal of providing safer and more cost-effective buildings. This research project will also produce a PhD in the structural-fire engineering field, helping to meet an acute US need for young scholars in this field. To move the US towards performance-based structural fire safety will also require improved education of structural engineers in this field. To address this need, the PI developed and offered a graduate level course in Structural-Fire Engineering at the University of Texas at Austin for the first time in 2006. As part of this research project, the PI will develop further course materials on structural-fire engineering that can be incorporated at the undergraduate level, as a module in an undergraduate steel design course.

该研究将开发实验数据，分析模型和设计模型，用于在升高温度下束端框架连接的性能。这项工作将包括对钢结构框架的热结构分析，以表征梁端连接处的力和变形需求，连接子组件的广泛高温实验以及连接的详细有限元分析。这项研究将在台湾国家郑项大学进行的平行努力进行协调，在该大学将在完整的全尺度梁上进行结构连接和链型力的发展，并在大规模结构性射击测试炉中进行测试。在美国，没有这种结构性火灾测试设施。这两个测试计划的协调将提供基准的质量数据，以了解多个尺度上的横梁框架连接的高温性能，并将导致对梁连接行为在火灾状态下对梁连接行为的了解大大增强。这项研究将填补当前知识的重要空白，这些知识基础是对结构性建筑物的性能的性能，并有助于基于绩效的启示，并有助于基于绩效的启示，并为建筑构建结构提供了最终的构建，并在建筑物的构建结构中，并在建筑物的构建中，并为您提供了构建的构建，从而实现了构建构建的范围，从而使您能够实现建筑物的范围，从而实现了建筑物的构建，从而使您的建筑物构成构建的范围，从而成为构建的范围，从而成为构建型号的范围。建筑物。 该研究项目还将在结构性火灾工程领域获得博士学位，从而有助于满足美国对该领域年轻学者的急需。要将美国朝基于绩效的结构消防安全，还需要改善该领域的结构工程师的教育。为了满足这一需求，PI在2006年首次在德克萨斯大学奥斯汀分校开发并提供了一门研究生级课程。作为该研究项目的一部分，PI将开发有关本科生级别的结构性火灾工程课程的进一步课程材料，该课程可以在本科生级别纳入本科生。