Advancing Innovative Structural Control Systems

2018年，自然灾害导致超过10，400人死亡，损失总额近1，600亿美元。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改善结构在风和地震作用下的性能。随着结构控制领域的不断发展，这些装置在结构中的实施变得越来越被接受。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，并且具有成本效益。拟议的研究重点是通过开发和评估结构控制装置来减少基础设施的脆弱性，这些装置将大大改善地震（地震隔离器）或风（动力吸振器）荷载下的结构性能。本研究计划的目标是：1）量化位于加拿大不同气候地区的配备FREI的桥梁的抗震性能; 2）表征具有独特形状的水箱几何形状的桥梁的行为;（3）发展一个先进的光滑粒子流体动力学（SPH）数值模型模拟风荷载作用下的非线性响应，评估设置风荷载的高层建筑在服务水平风荷载和极端荷载作用下的性能。拟议研究的结果将用于为当前和下一代工程师提供新型设备和先进的设计工具，包括建筑规范规定和指南，从而实现更高水平的建筑性能。作为加拿大1420亿加元建筑业的一个组成部分，我们的基础设施需要经济的基于性能的技术解决方案，包括具有成本效益的结构控制装置。通过推进用于地震和风力应用的结构控制装置，将实现利益相关者指定和建筑物使用者期望的更高水平的建筑性能。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.