Security of essential infrastructure: overhead transmission lines, telecommunication structures and post-critical buildings

拟议研究计划的主要目标是确保在发生灾难性气候或自然事件（如强风、严重冰暴和地震）时，基本基础设施的结构和功能安全得到保护。我们将结构安全性定义为结构系统承受极端载荷的能力，当结构发生故障时，其机制是可预测和控制的，以保护人类安全，最大限度地减少维修成本和故障/停机时间。对于相互依赖的系统和生命线，安全性进一步意味着故障或故障不会以多米诺骨牌（或级联）效应传播。在真正的性能化设计中，结构的安全性被明确规定为设计目标。

The main goal of the proposed research program is to ensure preservation of the structural and functional security of essential infrastructure in the event of catastrophic climatic or natural events such as high intensity winds, severe ice storms and earthquakes. We define structural security as the ability of a structural system to sustain extreme loading in such a way that if and when structural failure happens, its mechanisms are predictable and controlled to preserve human safety and minimize repair costs and malfunction/outage durations. For interdependent systems and lifelines, security further implies that a failure or malfunction will not propagate in a domino (or cascading) effect. In true performance-based design, structural security is clearly stipulated as a design objective.