The rational and performance-based fire safety design approach for concrete structures

为了设计能够承受非常事件(如火灾)的结构，必须采用工程方法来更准确地评估火灾对结构的影响。该项目为伙伴组织提供了一条途径，使其能够避免消防安全设计中的指令性方法，而采用更合理和更注重绩效的设计方法。规律性的消防安全设计很少或根本没有机会让设计师采取理性和创新的工程方法。在结构火灾安全中采用合理的、基于性能的方法，在安全、弹性和经济性方面为结构提供了好处。然而，它的问题是缺乏系统的设计指南来定义性能目标、设计火灾情景和分析方法。本研究成果将为进一步推动加拿大设计规范采用基于性能的设计方法提供一套新颖的基础性知识。在消防安全工程的背景下，将采用基于可靠性的方法，并将研究多个物理域之间的相互依赖关系。本项目将确定对结构响应影响最大的因素。对于不确定性对响应有较大影响的参数，定义了其概率特征。

To design structures that withstand extraordinary events (e.g., fire), engineering approaches are necessary to more accurately evaluate the effects of fires on structures. This project provides the partner organization with a pathway to steer away from prescriptive methods in fire safety design and adopt more rational and performance-based design approaches. The prescriptive fire safety design leaves little or no opportunity for designers to take a rational and innovative engineering approach. The adoption of rational and performance-based methods in structural fire safety offers benefits in terms of safety, resilience, and economy for structures. However, it suffers from the lack of systematic design guidelines for defining performance objectives, design fire scenarios, and methods of analysis. The outcome of this research will provide a set of novel and fundamental knowledge to further promote the adoption of the performance-based design method in Canadian design codes. In the context of fire safety engineering, a reliability-based methodology will be employed, and the interdependencies between multiple physical domains will be studied. This project will identify the factors which have the greatest impact on the response of structures. After that, probabilistic characteristics is defined for parameters whose uncertainty had a strong influence on the response.