Lateral Load Response of Total Precast Building Systems

整个预制建筑系统的横向荷载响应

• 批准号: 520936-2017
• 负责人: Gauvreau, Paul
• 金额: $ 1.27万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=651636
• 关键词: Lateral; Load; Response; Total; Precast

The proposed research project has as its primary objective to characterize the load-deflection response of total precast shear-wall systems for buildings under lateral and vertical load. The target applications is the design of buildings of up to 35 storeys in areas of low to medium seismicity. This work will provide the knowledge required to support the development of new code provisions related to drift limits under lateral load that apply specifically to total precast buildings. Current drift limits in the code were developed for cast-in-place shear wall systems and give no consideration to the unique load-deflection characteristics of total precast systems that arise from the connection details used.**The work will include a significant experimental component, consisting of relatively simple tests of the load-deflection response of the two most common types of connector used in these systems, and of a scale model test of a simple three-dimensional shear-wall system. The results of this experimental work will be used in the development of numerical modeling strategies suitable for total precast shear wall systems.**The work has the potential to increase the market for total precast buildings in Canada. The work will support the development of code provisions pertaining specifically to the lateral load response of total precast buildings. In general, engineers are reluctant to design and owners are reluctant to build structural systems for which specific code provisions are not available. For both parties, specific code provisions provide a reliable basis for demonstrating that the structural system under consideration will be capable of performing its function as intended. The absence of code provisions that relate specifically to total precast buildings has thus been a significant barrier preventing the greater use of this type of structure. By enabling the drafting of code provisions that relate specifically to the performance of total precast buildings under lateral load, the proposed research will enable this significant barrier to be removed. In this way, the proposed research has the potential to increase the market for total precast buildings in Canada.

拟议的研究项目的主要目标是表征横向和垂直负载下建筑物的全部预制剪切壁系统的负载反射响应。目标应用是在低至中地震的地区设计多达35层的建筑物的设计。这项工作将提供支持开发与横向负载下与漂移限制相关的新代码规定所需的知识，这些规定专门适用于整个预制建筑物。代码中的当前漂移限制是针对现场剪切壁系统开发的，并且不考虑由所使用的连接细节引起的总预制系统的独特负载反射特性。这项实验工作的结果将用于制定适用于总预制剪切壁系统的数值建模策略。**这项工作有可能增加加拿大总预制建筑的市场。这项工作将支持与总​​预制建筑物的横向负载响应有关的代码规定的开发。通常，工程师不愿意设计，所有者不愿意建立没有特定代码规定的结构系统。对于双方，特定的代码规定为证明所考虑的结构系统能够按预期执行其功能提供了可靠的基础。因此，缺乏专门与总预制建筑物有关的代码规定，这是一个重大障碍，阻止了这种类型的结构的更大使用。通过启用与横向负载下完全预制建筑物的性能相关的代码规定的起草，拟议的研究将使这一重大障碍能够删除。通过这种方式，拟议的研究有可能增加加拿大预制建筑的市场。