Development of Canadian seismic design procedures for precast shear wall buildings

预制混凝土剪力墙显示出解决加拿大一些紧急住房和商业建筑需求的潜力，具有高质量和高耐用的施工方法，可以快速在现场组装。然而，在加拿大，人们对这些系统的抗震设计缺乏了解，并且在加拿大建筑规范中没有明确的预制混凝土建筑抗震设计规定。在这个联盟加速项目中，UBC研究人员与加拿大预制/预应力混凝土研究所（CPCI）合作解决这一迫切需求。CPCI是一家非营利组织，被广泛认为是加拿大预制混凝土设计的权威机构。在接下来的四年里，四名研究生将接受预制混凝土剪力墙建筑抗震设计、评估和开发方面的培训。这个联盟-加速项目的总体目标是为加拿大预制混凝土剪力墙建筑制定有科学依据的抗震设计指南。为了实现这一目标，将开发综合数值模型来研究一系列预制混凝土剪力墙建筑的动力响应。通过这项全面的数值研究，将实现以下目标：1)评估当前的实践状态并建议设计限制，2)用新的推荐设计条款改善当前的实践状态，以及3)提出（即制定设计要求）一种新的高震区预制混凝土剪力墙系统。研究结果将是详细的设计指南，可用于提出对建筑规范的修改，包括预制特定设计指南，从而产生直接，重大和广泛的影响。CPCI将有助于确保该项目的研究成果具有足够的实用性，以满足加拿大工业的需求。随着对高性能系统的需求和可承受的建筑成本，这项研究也为预制混凝土剪力墙提供了一个机会，使其成为抗震系统的选择，从而在加拿大建造更高性能的建筑。

Precast concrete shear walls show potential for addressing some of Canada's urgent housing and commercial building demands with high quality and highly durable construction methods that are quick to assemble on site. However, there is a lack of knowledge about the seismic design of these systems in Canada, and there are no explicit seismic design provisions for precast concrete buildings in Canadian building codes. In this Alliance-Accelerate project, UBC researchers partner with the Canadian Precast/Prestressed Concrete Institute (CPCI) to address this urgent need. CPCI is a not-for-profit that is widely considered the leading authority in Canada for precast concrete design. Over the next four years, four graduate students will be trained in the seismic design, assessment, and development of precast concrete shear wall buildings. The overarching goal of this Alliance-Accelerate project is to develop scientifically-backed seismic design guidelines for Canadian precast concrete shear wall buildings. To achieve this goal, comprehensive numerical models will be developed to study the dynamic response of a range of precast concrete shear wall buildings. Using this comprehensive numerical study, the following objectives will be accomplished: 1) assess current state of practice and recommend restrictions in design, 2) improve current state of practice with new recommended design provisions, and 3) propose (i.e., develop design requirements for) a new precast concrete shear wall system for high-seismic regions. The research outcomes will be detailed design guidelines that can be used to propose changes to the building code, including precast-specific design guidelines, resulting in immediate, significant, and widespread impact. CPCI will be instrumental in ensuring the research outcomes of this project are sufficiently practical to meet the needs of the Canadian industry. With the need for high-performance systems with affordable construction costs, this research also provides an opportunity for precast concrete shear walls to be a seismic force-resisting system of choice and result in higher performance buildings constructed in Canada.