Performance and Retrofit of RC Shear Walls with Openings

9416487 Wallace现行的结构墙开口规范规定对新建筑和现有建筑的改造都有大量的加强要求。在改造的情况下，升级成本通常接近或超过建筑物的重置成本。现有的建筑物通常被拆除，取而代之的是一个可能不太可靠的侧向强制抗力系统的建筑物。这个项目的目标是开发基于性能的改造指导方针。进行了一个重点研究项目，以确定新建筑和现有建筑的适当分析和设计方法。北岭地震为研究带有穿孔剪力墙的“老式”钢筋混凝土建筑的性能提供了一个极好的机会。研究的主要工作将是比较预期和观察到的建筑性能，并评估目前使用穿孔钢筋混凝土（RC）剪力墙的建筑物的抗侧载改造策略。研究结果有可能对钢筋混凝土穿孔剪力墙设计指南的发展产生重大影响。本研究项目的项目组是“研究型”工程师和“实践型”工程师的结合。这种合作将使该项目能够涵盖与穿孔剪力墙相关的广泛设计和改造问题，以评估当前的实践状况以及未来的研究需求。这是北岭地震项目。＊＊＊

9416487 Wallace 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. ***