Development of seismic design guidelines for high-rise buildings with resilient outrigger systems

温哥华是加拿大第三大城市，太平洋西北部第二大城市。与不断增长的 随着温哥华及其邻近城市人口的增加，温哥华大都市区的人口正在激增， 高层建筑。由于大量人口集中在这些建筑物中， 地震后的建筑类型可能会导致毁灭性的经济，社会和生命损失。由于大部分 这些高层建筑是住宅，功能的丧失和弹性的缺乏将导致大规模的临时 住房需求和长期复苏。 典型的高层建筑使用带平板的钢筋混凝土剪力墙（RCSW）。这些 钢筋混凝土剪力墙在抵抗地震时的横向荷载方面非常有效。然而，当一座建筑成为 越高，相关的挠度和倾覆力矩就变得过大。这导致更厚的 垃圾焚烧发电厂，占地面积更大，建筑物内的可销售空间减少。 本研究的主要目的是开发一种由深层刚性结构组成的支腿系统， 梁耦合RCSW和周边列。这样的系统在顶部产生了一个抵消时刻 钢筋混凝土剪力墙，以减少挠度和倾覆力矩，由于横向负荷。此外，指定能源 将在支腿系统中加入耗散装置，使整个结构具有 在不同的地震危险等级下的多个性能标准。这项研究的成功使得支腿 改善高层建筑的抗震能力和结构效率。 这项NSERC参与补助金将在不列颠哥伦比亚省大学与 (UBC)Read Jones Christoffersen（RJC）工程咨询公司会议的实际成果 建议的研究是一个设计指南，高层建筑与弹性支腿系统。本指导原则 将立即使设计界受益，并允许创新的结构技术用于 高层建筑。

Vancouver is the third largest city in Canada and second largest in the Pacific Northwest. With the growing population in Vancouver and its neighbouring cities, the Vancouver metropolitan area is seeing an upsurge in high-rise construction. With a high population concentrated in these buildings, failure or severe damage of this type of buildings after an earthquake could result in devastating financial, social, and life losses. Since most of these high-rises are residential, loss of functionality and lack of resiliency will lead to massive temporary housing demands and prolonged recovery. The typical high-rise construction uses reinforced concrete shear walls (RCSWs) with flat plates. These RCSWs are very efficient in resisting the lateral loads during an earthquake. However, as a building becomes taller, the associated deflection and overturning moment become excessively large. This results in thicker RCSWs, larger footprint, and reduced saleable space within the building. The primary purpose of the proposed research is to develop an outrigger system consisted of deep and stiff beams to couple RCSWs and perimeter columns. Such a system creates a counteracting moment at the top of RCSWs to reduce deflection and overturning moment due to lateral loads. In addition, designated energy dissipation devices will be incorporated into the outrigger system so that the overall structure will have multiple performance criteria at different seismic hazard levels. The success of the research allows an outrigger improved high-rise to be earthquake resilient and structural efficient. This NSERC Engage Grant will create a strong collaboration between the University of British Columbia (UBC) and Read Jones Christoffersen (RJC) engineering consulting firm. The practical outcome of the proposed research is a design guideline for high-rise buildings with resilient outrigger systems. This guideline will immediately benefit the design community and allow innovative structural technologies to be used in high-rise construction.