Resilient Connections Between Hard Walls and Steel Frames in Metal Buildings

本项目将致力于研究在地震和风荷载作用下，通过能量吸收和坚固的连接来理解轻金属建筑框架和硬砌体墙之间的相互作用。将进行分析研究，以初步建立联系。将在实验室进行实验研究，以确定可行的连接方式，这些连接方式可以传递风荷载并吸收能量，从而提高抗震性能。我们的目标是开发连接在砌体墙，将工作与金属框架，以提高系统的抵抗多种危险。一个工业咨询小组将协助选择连接，以确保其在施工中的实用性。轻型金属结构建筑广泛应用于工业和商业建筑，提高这些建筑的弹性将减少灾害的经济损失。本研究将通过一系列的研究任务来完成，包括分析建模，实验测试，开发设计方法，并评估系统在多种灾害中的性能。第一项任务是通过分析建模确定地震和风事件下刚性和柔性元件之间的连接要求。第二项任务将量化必要的强度，能量耗散和连接变形的要求，以实现增强的性能。第三个任务是通过非线性有限元分析设计、分析和比较评估连接的能量耗散和鲁棒性。随后将对具有高性能潜力的连接进行实验测试，同时保持经济性和可施工性。最后一项任务是评估建筑系统在风和地震荷载下的能量吸收能力和鲁棒性。教育和推广部分包括参加工程日的高中生、指导高中生的大学生和有针对性的专业实践推广。

This project will pursue research in understanding interaction between light metal building frame and hard masonry wall through energy absorbing and robust connections under seismic and wind loading. Analytical research will be pursued for initial development of connections. Experimental research will be conducted in the laboratory for viable connections that are configured to transfer wind loads as well as absorb energy to enhance seismic performance. The goal is to develop connections in masonry walls that will work with the metal frame to enhance resistance of the system under multiple hazards. An industrial advisory group will assist in selecting connections for their practicality in construction. The light frame metal buildings are widely used for industrial and commercial buildings; improving resiliency of these buildings will reduce economic losses in hazards.The research will be accomplished through a series of research tasks that include analytical modeling, experimental testing, development of a design methodology, and evaluation of system performance in multiple hazards. The first task will be to determine connection demands between stiff and flexible elements for seismic and wind events through analytical modeling. The second task will quantify the requisite strength, energy dissipation and connection deformation demands required to achieve enhanced performance. The third task will be design, analysis and comparative evaluation of energy dissipation and robustness of connections through nonlinear finite element analysis. Experimental testing of connections with high performance potential while being economical and constructible will follow. The final task will be assessment of building system for energy absorption capacity and robustness under wind and seismic loading. The education and outreach components include high school students attending Engineering Day, college students mentoring high school students and targeted outreach to professional practice.