Non-linear performance of tall buildings under wind actions

安大略和加拿大高层建筑的持续增长增加了对可持续城市栖息地的需求。目前，大多数高层建筑的设计都是采用“规范为基础”的设计方法，坚持建设规范和标准。虽然目前的“基于规范”的设计方法更容易应用，但一些研究已经强调了其现实世界的局限性。在过去的几十年里，基于性能的设计（PBD）方法已经成功地应用于抗震设计中，其中要求建筑物的结构系统提供预期的性能，而不是公开地规定如何建造它。然而，对于高层建筑必不可少的风设计，情况并非如此。与工业伙伴合作（即，直观），该研究项目研究了高层建筑在风作用下的非线性行为，这对于实现高层建筑基于性能的风设计至关重要。这将在以下三个里程碑中实现：（i）将对安大略的主要城市进行详细的气候分析，以解决高风速和持续时间的联合概率，这对确定潜在风暴的长度至关重要，（ii）将通过对典型高层建筑物形状的几个风洞压力测试来建立空气动力学数据库，及（iii）结构性非-将利用里程碑ii中的空气动力学数据库进行线性动力学分析，同时考虑里程碑i中获得的风暴持续时间，以研究高空作业平台的行为。风作用下的建筑物，这是必不可少的评估性能为基础的设计。

The continuing growth of tall building construction in Ontario and Canada has increased the need for sustainable urban habitats. Currently, most tall buildings are designed utilizing "specification-based" design method that adheres to construction norms and standards. Although the current "specification-based" design method is easier for application, several studies have highlighted its real-world limitations. Over the past few decades, the Performance-Based Design (PBD) approach has been successfully implemented in seismic design, where the structural system of a building is required to provide the intended performance instead of overtly prescribing how to construct it. However, this is not the case for wind design, which is essential for tall buildings. In collaboration with the industrial partner (i.e., Entuitive), this research project investigates the non-linear behavior of tall buildings under wind actions, which is essential to achieve the performance-based wind design of tall buildings.This will be achieved in 3 milestones as follows: (i) a detailed climate analysis will be conducted for major cities in Ontario, to address the joint probability of high wind speeds and durations, which is essential to identify the length of potential wind storms, (ii) an aerodynamic database will be developed through several wind tunnel pressure tests on typical high rise building shapes, and (iii) structural non-linear dynamic analysis will be conducted using the aerodynamic database in milestone ii considering the storm durations obtained from milestone i to investigate the behavior of tall buildings under wind actions, which is essential to assess the performance based design.