Advancing Innovative Structural Control Systems

2018年，自然灾害造成1.04万人死亡，经济损失近1600亿美元。地震和极端风相关事件占所有死亡人数的一半以上，损失超过1000亿美元。现代结构控制系统可以显著提高结构在风和地震事件下的性能。随着结构控制领域的不断发展，这些装置在结构中的应用越来越被人们所接受。为了进一步增加这些系统的使用，它们必须被很好地理解，设计简单，成本效益高。提出的研究重点是通过开发和评估结构控制装置来降低基础设施的脆弱性，这些装置将显著提高结构在地震（隔震）或风（动力减振器）荷载下的性能。本研究计划的目标是：1)量化位于加拿大不同气候区域的桥梁的抗震性能，并配备FREI；2)描述具有独特形状的坦克几何形状的TLD的行为；3)建立了基于光滑粒子流体力学（SPH）的高级数值模型，模拟了TLD的非线性响应，并评估了TLD在服务级风荷载和极端荷载事件下的高层建筑性能。拟议研究的结果将用于为当前和下一代工程师提供新颖的设备和先进的设计工具，包括建筑规范条款和指导方针，从而实现更高水平的建筑性能。作为加拿大价值1420亿加元、雇佣140万人的建筑行业的重要组成部分，我们的基础设施需要经济高效的技术解决方案，包括具有成本效益的结构控制设备。通过推进抗震和风力应用的结构控制设备，将实现利益相关者指定的更高水平的建筑性能和建筑居住者的期望。这将最终改善加拿大的基础设施，为加拿大社区提供经济、安全和有弹性的基础设施。

In 2018, natural catastrophes resulted in over 10,400 fatalities and in losses totaling nearly US$160 billion. Earthquake and extreme wind related events accounted for over half of all fatalities, and over US$100 billion in losses. Modern structural control systems can significantly improve the performance of structures subjected to wind and seismic events. As the field of structural control continues to develop, the implementation of these devices in structures is becoming more accepted. To further increase the use of these systems they must be well understood, straightforward to design, and cost-effective. The proposed research focuses on reducing infrastructure vulnerability through the development and evaluation of structural control devices that will significantly improve structural performance under seismic (seismic isolator) or wind (dynamic vibration absorber) loads. The goals of this research program are to: 1) quantify the seismic performance of bridges located in different climatic regions within Canada equipped with FREI; 2) characterize the behaviour of TLD having uniquely shaped tank geometries; and 3) develop an advanced numerical model using smoothed particle hydrodynamics (SPH) to simulate the nonlinear response of TLD and evaluate the performance of tall buildings equipped with TLD under both service level wind loads and extreme loading events. Findings from the proposed research will be used to equip current and next generation engineers with novel devices and advanced design tools, including building code provisions and guidelines, enabling higher levels of building performance to be achieved. As an integral component of Canada's C$142 billion construction industry that employs 1.4 million people, our infrastructure is in need of economical performance-based technical solutions, including cost-effective structural control devices. By advancing structural control devices for seismic and wind applications, higher levels of building performance, specified by stakeholders and expected by building occupants, will be achieved. This will ultimately improve Canada's infrastructure, providing Canadian communities with economical, safe and resilient infrastructure.