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，也是太平洋西北部第二大城市。随着不断增长的 在温哥华及其邻近城市的人口中，温哥华大都市区正在经历一场 高层建筑。由于这些建筑集中了大量的人口，因此这座建筑的故障或严重损坏 地震后的建筑物类型可能会造成毁灭性的经济、社会和生命损失。因为大多数人 这些高层建筑是住宅，失去功能和缺乏弹性将导致大规模的临时 住房需求和长期复苏。 典型的高层建筑采用带平板的钢筋混凝土剪力墙。这些 在地震期间，RCSW在抵抗横向荷载方面非常有效。然而，随着一座建筑成为 高度越高，相关的挠度和倾覆力矩就越大。这会导致更厚的 RCSW、更大的占地面积和建筑内的可销售空间减少。 拟议研究的主要目的是开发一种由深度和刚性组成的支腿系统 连接RCSW和周边柱的梁。这样的系统在顶部产生了一个相互抵消的时刻 RCSW可减少侧向荷载引起的挠度和倾覆力矩。此外，指定能源 消能装置将被纳入支腿系统中，因此整个结构将具有 不同地震危险级别的多个性能标准。这项研究的成功使一个支腿 改进了高层建筑，使其具有抗震能力和结构效率。 这项NSERC Engage Grant将在不列颠哥伦比亚大学之间建立强大的合作 (UBC)和Read Jones Christoffersen(RJC)工程咨询公司。该计划的实际成果是 本文的研究成果可为弹性支腿体系高层建筑的设计提供参考。本指导方针 将立即使设计界受益，并使创新的结构技术应用于 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.