CAREER: Tools and Research to Advance the Use of Strut-and-Tie Models in Education and Design

职业：促进支柱拉杆模型在教育和设计中使用的工具和研究

• 批准号: 0092668
• 负责人: Daniel Kuchma
• 金额: $ 37.5万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-15 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0092668&HistoricalAwards=false
• 关键词: CAREER; Tools; Research; Advance; Use

The Strut-and-Tie Method (STM) is an emerging and rational design procedure that has the potential to revolutionize the way that engineers design D-(Discontinuity) Regions in structural concrete. D-Regions are those portions of a structure in which there is a complex variation in strain, such as in joints, corbels, and deep beams, as well as in regions near a concentrated force, opening or another discontinuity. This research project will consist of three activities that are focused on overcoming barriers that stand in the way of the STM's advance in the educational and practicing communities. (i) Much-needed experimental research will be conducted to help assess the dimensions, stiffness, and strength characteristics of struts, ties, and nodes. (ii) A computer-based design program will be developed that eliminates the cumbersome design tasks of making repetitive calculations of truss geometry, member dimensions, and stress values. (iii) Educational resources will be created to aid teachers, students, and practitioners in the understanding and use of this unfamiliar design methodology. The results of this research will be disseminated on a project web site www.ce.uiuc.edu/kuchma/strut&tiehttp://www.ce.uiuc.edu/kuchma/strut%26tie. Through the advance of the STM, students and engineers will be able to design all types of D-Regions by simply focusing on the flow of forces in a truss. This will result in the construction of more reliable and efficient D-Regions in our civil infrastructure.

拉压杆法（STM）是一种新兴的合理的设计方法，它有可能彻底改变工程师设计混凝土结构D（不连续）区域的方式。 D区域是结构中应变复杂变化的部分，例如接头、牛腿和深梁，以及集中力、开口或其他不连续性附近的区域。 该研究项目将包括三项活动，重点是克服阻碍STM在教育和实践社区发展的障碍。 (i)将进行急需的实验研究，以帮助评估支柱、拉杆和节点的尺寸、刚度和强度特性。 (ii)将开发一个基于计算机的设计程序，以消除重复计算桁架几何形状、构件尺寸和应力值的繁琐设计任务。 (iii)教育资源将被创建，以帮助教师，学生和从业人员在理解和使用这种不熟悉的设计方法。 这项研究的结果将在一个项目网站上传播：www.ce.uiuc.edu/kuchma/strut%26tie。 通过STM的进步，学生和工程师将能够通过简单地专注于桁架中的力的流动来设计所有类型的D区域。 这将导致在我们的民用基础设施中建设更可靠和更有效的D区。