RC Bearing Walls Subjected to Elevated Temperatures

承受高温的 RC 承重墙

• 批准号: 0800356
• 负责人: Yahya Kurama
• 金额: $ 10万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0800356&HistoricalAwards=false
• 关键词: RC; Bearing; Walls; Subjected; Elevated

The primary research objective of this project is to investigate the behavior and design of reinforced concrete (RC) wall structures under elevated temperatures due to fire. To achieve this objective, the research will: (1) experimentally investigate the out-of-plane axial-load-moment-curvature-temperature behavior of RC wall cross sections under elevated temperatures; (2) evaluate the effects of geometric, material, reinforcement, and loading parameters on these structures; and (3) develop a rational, predictive fire-resistant structural design procedure based on the test results. The project will result in experimental evidence demonstrating the fire performance of RC walls and validated design models using the test data. In addition, the experiments will investigate the application of a cost-effective test method using ceramic fiber radiant heaters to subject the specimens to elevated temperatures. The ultimate project deliverables will be the ability to evaluate the structural performance of a RC wall under fire and the ability to design a wall that can withstand uncontrolled fires until burnout. The successful completion of the project tasks will provide important data for fire-resistant design of reinforced concrete walls commonly used in building structures, with ancillary contributions to fire engineering and materials engineering/science fields. Wall structures designed using this information will facilitate emergency response activities by protecting elevator cores and stairwells, and contribute towards the resistance of buildings to prevent catastrophic overall collapse. The project will train a graduate student in fire resistant design of structures and encourage undergraduate students to study structural fire engineering, strongly focusing on underrepresented groups. The researchers will utilize the project to educate future engineers through K12 activities as well. The research results will be disseminated widely for utilization by practicing engineers, other researchers, and other end users.

该项目的主要研究目的是研究在火灾引起的升高温度下的钢筋混凝土（RC）壁结构的行为和设计。为了实现这一目标，研究将：（1）在温度升高的温度下，实验研究RC壁横截面的平面外轴向弹性曲线温度的行为； （2）评估几何，材料，增强和加载参数对这些结构的影响； （3）基于测试结果制定了一种理性的，预测性的耐火结构设计程序。该项目将提供实验证据，证明使用测试数据的RC壁的火力性能和验证的设计模型。此外，实验将研究使用陶瓷纤维辐射加热器的具有成本效益的测试方法的应用，以使样品降低温度。最终的项目可交付成果将是能够评估RC墙壁下的结构性性能以及设计可以承受不受控制的火灾直至倦怠的墙壁的能力。项目任务的成功完成将为建筑结构中常用的钢筋混凝土墙的防火设计提供重要数据，并对消防工程和材料工程/科学领域有辅助贡献。使用此信息设计的墙壁结构将通过保护电梯核心和楼梯间来促进应急活动，并有助于建筑物的抵抗，以防止灾难性的总体崩溃。该项目将培训一名抗火灾设计的研究生，并鼓励本科生学习结构性消防工程，并强烈专注于代表性不足的群体。研究人员还将利用该项目通过K12活动来教育未来的工程师。研究结果将被实践工程师，其他研究人员和其他最终用户广泛传播以用于利用。