BRIGE: Innovative Connection Design for Enhanced Seismic Performance of Low to Mid-Rise Steel Frames

BRIGE：创新连接设计，增强中低层钢框架的抗震性能

• 批准号: 0926858
• 负责人: Jason McCormick
• 金额: $ 17.5万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0926858&HistoricalAwards=false
• 关键词: BRIGE; Innovative; Connection; Design; Enhanced

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The research objective of this BRIGE award is to develop new connection details utilizing the superior compression, bending, and torsion properties of hollow structural section (HSS) beam and column members for low to mid-rise steel frames in areas of high seismicity. The behavior of HSS beam members under bending will be explored through full-scale experimental studies to determine limiting parameters for plastic hinge formation. The data from these tests will provide the basis for detailed models that can accurately capture global and local behavior under bending and provide a means to identify suitable connection configurations and design details. Further refinement of these models will be achieved through small-scale tests focused on local buckling and weld behavior. The seismic response of frame systems with the identified HSS connections will be compared to those with conventional connection detailing through numerical analyses. Additional numerical studies of the HSS moment connections will consider the use of innovative supplemental energy dissipation materials to further enhance their seismic performance.If successful, the results of this research will provide a knowledge base for the design of resilient and robust low to mid-rise moment frame structures utilizing HSS members. The increased understanding of the global bending, local, and weld behavior of HSS members will directly benefit the steel design community and help to enhance the welfare and safety of communities in areas of high seismicity. The interaction between materials, structures, and natural hazards provides a unique context in which to broaden participation of underrepresented students. K-12 outreach programs and involvement of underrepresented groups at the university level in everything from analytical modeling to large-scale structural testing will act as a catalyst to foster continued participation and interest of underrepresented groups in the math, science, and engineering fields.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该BRIGE奖项的研究目标是开发新的连接细节，利用中空结构截面（HSS）梁和柱构件的上级压缩、弯曲和扭转性能，用于高地震活动性地区的低至中高层钢框架。 将通过全尺寸试验研究探索HSS梁构件在弯曲条件下的行为，以确定塑性铰形成的极限参数。 这些测试的数据将为详细模型提供基础，这些模型可以准确捕获弯曲下的全局和局部行为，并提供识别合适连接配置和设计细节的方法。 这些模型的进一步完善将通过小规模的局部屈曲和焊接行为的重点测试。 通过数值分析，将具有已确定的HSS连接的框架系统的地震响应与具有常规连接详图的框架系统的地震响应进行比较。 HSS弯矩连接的附加数值研究将考虑使用创新的补充耗能材料，以进一步提高其抗震性能。如果成功，本研究的结果将为使用HSS构件的弹性和稳健的低至中高度弯矩框架结构的设计提供知识基础。 对HSS构件的整体弯曲、局部和焊接行为的进一步了解将直接使钢结构设计界受益，并有助于提高高地震活动地区社区的福利和安全。材料，结构和自然灾害之间的相互作用提供了一个独特的背景下，扩大代表性不足的学生的参与。 K-12外展计划和代表性不足的群体在大学一级参与从分析建模到大规模结构测试的一切活动，将成为促进代表性不足的群体在数学，科学和工程领域的持续参与和兴趣的催化剂。