Effective Seismic Design of Reinforced Concrete Buildings with Different Ductility Levels

剪力墙和联肢墙是常用的抗震体系(SFR)，用于加固 混凝土(RC)建筑物。根据加拿大国家建筑规范(NBCC 2010)， 钢筋混凝土建筑根据其延性程度分为延性、中等延性和 传统的建筑系统。设计者对SFRS延性水平的选择主要受 受建筑位置、建筑特点和高度规范的限制。 拟议研究项目的目标是评估选定的SFRS延性水平对 钢筋混凝土剪力墙建筑的预计造价和抗震性能。研究项目 将包括两个阶段；第一阶段将研究延性水平对钢筋混凝土剪力墙建筑的影响， 而第二阶段的重点将是双面墙的钢筋混凝土建筑。每一阶段，四栋多层 位于三个不同城市的不同高度(代表低、中、高)的建筑物 加拿大将被选中。对于每个建筑物的高度和位置，SFR将根据 使用动态分析的最新NBCC 2015和加拿大标准协会CSA A23.3-14 程序为延性、中等延展性或按常规构造的系统。抗震性能和 成本估算将针对特定SFRS的每个延展性水平进行评估。拟议的研究将有助于 设计者用于最适当地选择满足规范要求的SFRS的延性水平， 同时提供最经济的选择。 这项工程的成果可为建造业带来直接的环境/经济效益。 加拿大。除了与有效设计抗震系统相关的节省外， 这项研究的成果通过减少混凝土和钢筋的使用对环境产生了积极的影响 减少使用的数量，从而减少与混凝土生产过程相关的排放。

Shear walls and coupled walls are common seismic force resisting systems (SFRS) that are used for reinforced concrete (RC) buildings. According to the National Building Code of Canada (NBCC 2010), the SFRS of reinforced concrete buildings are classified based on their ductility level as ductile, moderately ductile and conventional construction systems. The designer's selection of the SFRS level of ductility is primarily governed by the building location, building characteristics, and the height limitations of the code. The objective of the proposed research project is to evaluate the effect of selected SFRS level of ductility on the estimated construction cost and the seismic performance of RC shear wall buildings. The research project will include two phases; the first phase will investigate the effect of ductility level on RC shear wall buildings, whereas the second phase will focus on RC buildings with coupled walls. For each phase, four multi-storey buildings with different heights (representing low, medium and high rise) located in three different cities in Canada will be selected. For each building height and location, the SFRS will be designed according to the most recent NBCC 2015 and Canadian Standard Association CSA A23.3-14 using the Dynamic Analysis Procedure as ductile, moderately ductile, or conventionally constructed system. The seismic performance and cost estimates will be evaluated for each ductility level of a specific SFRS. The proposed research will help the designers for most suitable selection of the ductility level of a SFRS that satisfies the code requirements, meanwhile provide the most economic choice. The outcome of this project has a direct environmental/economic benefit to the construction industry in Canada. In addition to the savings associated with effective design of seismic force resisting systems, the outcome of this research has a positive environmental impact through the reduction of concrete and steel quantities used, hence reducing emissions associated with concrete production processes.