Performance and Retrofit of Reinforced Concrete Shear Walls With Openings

开孔钢筋混凝土剪力墙的性能及改造

• 批准号: 9416393
• 负责人: Loring Wyllie
• 金额: $ 1.19万
• 依托单位: Degenkolb Engineers
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-15 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416393&HistoricalAwards=false
• 关键词: Performance; Retrofit; Reinforced; Concrete; Shear

9416393 Wyllie Current code provisions for structural walls with openings result in substantial reinforcing requirements for both new construction and the retrofit of existing construction. In the case of retrofit, the upgrade cost is typically close to or exceeds the building replacement cost. Existing buildings are commonly demolished and replaced with a building incorporating a potentially less reliable lateral forced resisting system. The objective of this project is to develop performance- based retrofit guidelines. A focused research project is conducted to identify appropriate analysis and design methodologies for both new and existing construction. The Northridge Earthquake provides an excellent opportunity to study the performance of "older" reinforced concrete buildings constructed with perforated shear walls. The primary effort of the research will be to compare expected versus observed building performance and to assess current retrofit strategies of buildings utilizing perforated reinforced concrete (RC) shear walls for lateral load resistance. The results of the research have the potential to significantly impact the development of design guidelines for RC perforated shear walls. The project team for this research project combines the talents of "research" and "practicing" engineers. This collaborative effort will enable the project to encompass the broad spectrum of design and retrofit issues associated with perforated shear walls necessary to assess the current state-of-the-practice as well as future research needs. This is a Northridge Earthquake project. ***

9416393 Wyllie当前规范中关于带开口的结构墙的规定导致了新建筑和现有建筑改造的大量加固要求。 在改造的情况下，升级费用通常接近或超过建筑物重置费用。 现有的建筑物通常被拆除，取而代之的是一个潜在的不太可靠的横向受力抵抗系统的建筑物。 该项目的目标是制定基于性能的改造指南。 一个重点研究项目进行，以确定适当的分析和设计方法，为新的和现有的建设。 北岭地震提供了一个很好的机会，研究性能的“老”钢筋混凝土建筑物与穿孔剪力墙。 研究的主要工作将是比较预期与观察到的建筑性能，并评估目前的改造策略的建筑物利用穿孔钢筋混凝土（RC）剪力墙的横向荷载阻力。 研究结果有可能显着影响RC开孔剪力墙的设计准则的发展。 该研究项目的项目团队结合了“研究”和“实践”工程师的才能。 这种合作努力将使该项目能够涵盖与穿孔剪力墙相关的广泛的设计和改造问题，以评估当前的实践状况以及未来的研究需求。 这是一个北岭地震项目。 ***