Advanced Simulation Platforms for Performance Based Engineering

基于性能的工程（PBE）是一种平衡的方法，用于设计新建筑或评估现有结构，通常可以在建筑成本和最终性能之间实现最佳平衡。虽然PBE在地震工程实践中取得了成功（即，基于性能的地震工程-PBEE），只有有限数量的研究用于PBE在风工程中的应用（即，基于性能的风力工程（PBWE）。从结构设计的角度来看，PBWE的主要贡献在于找到一个现实的，但更经济的设计解决方案，满足要求，在倒塌预防水平，允许材料的非弹性响应。虽然有大量的文献涉及地震荷载下的结构的非线性分析，同样不能说关于风荷载下的非线性分析的文献。因此，这里提出了一个全面的研究计划，以解决这些差距。 拟议方案由四个互补项目组成，旨在同时改进PBWE和PBEE的现有工具。为此，我们将利用高性能计算资源，（i）将根据综合风洞数据库验证不同级别的计算流体动力学（CDF）模拟，从而推进在结构工程应用中使用CFD工具的前景（项目1，PBWE）;（二）计算流体力学模拟将与结构动力学模拟相结合，其中将使用从计算流体力学模拟获得的真实风荷载条件分析结构在线性和非线性范围内的动力性能，从而解决对风荷载作用下非线性结构行为的理解不足（项目2，PBWE）;（iii）计算流体动力学模拟将与结构模拟相结合，同时考虑流体与结构的相互作用，从而提供了一个清晰的理解非线性结构响应下的风荷载与流致振动机制（项目3，PBWE）;（iv）不同的并行计算策略将被用于实时硬件定制，以实现更逼真的数值子结构模型的实时混合仿真（RTHS），从而显着扩大RTHS的应用范围作为一个国家的最先进的测试方法在PBE（项目4，PBEE，PBWE）。通过为结构工程师提供增强的数值和实验工具，拟议的研究计划将有效地促进下一代结构在不同的危险条件下，由于地震和风事件的设计和理解。随着研究成果的传播，并通过将接受培训的高素质人员，该研究计划将使加拿大在基于性能的工程，结构设计，模拟和测试领域处于领先地位。

Performance Based Engineering (PBE) is a balanced approach to the design of a new building or evaluation of an existing structure that often achieves the best possible balance between construction costs and ultimate performance. Although PBE has progressed successfully in earthquake engineering practice (i.e., Performance Based Earthquake Engineering-PBEE), there are only a limited number of studies for the application of PBE in wind engineering (i.e., Performance Based Wind Engineering-PBWE). From a structural design point of view, the main contribution of PBWE lies in finding a realistic yet more economical design solution that satisfies the requirements at the collapse prevention level by allowing inelastic response of materials. Although there is a large amount of literature related to nonlinear analysis of structures under seismic loading, the same cannot be said regarding the literature on nonlinear analysis under wind loads. As such, a comprehensive research program is proposed here to address these gaps. Composed of four complementary projects, the proposed program aims to improve the available tools for both PBWE and PBEE simultaneously. To do this, we will leverage high performance computational resources where (i) computational fluid dynamics (CDF) simulations with different levels of fidelities will be validated against a comprehensive wind tunnel database and thus advancing the prospects of using CFD tools in structural engineering applications (Project 1, PBWE); (ii) CFD simulations will be coupled with structural dynamics simulations where the realistic wind loading conditions obtained from CFD simulations will be used to analyze the dynamic performance of structures both in linear and nonlinear ranges, and thus addressing the lack of understanding of nonlinear structural behavior under wind loads (Project 2, PBWE); (iii) CFD simulations will be coupled with structural simulations by considering also the fluid structure interaction, and thus providing a clear understanding of the nonlinear structural response under wind loading with flow-induced vibration mechanisms (Project 3, PBWE); (iv) different parallel computing strategies will be used in real-time hardware customization to implement more realistic numerical substructure models for Real-time Hybrid Simulation (RTHS), and thus significantly expanding the application scope of RTHS as a state-of-the-art testing method in PBE (Project 4, PBEE, PBWE). By providing structural engineers with enhanced numerical and experimental tools the proposed research program will efficiently contribute to the design and understanding of next generation structures under different hazard conditions due to seismic and wind events. With the dissemination of the research findings, and through the highly qualified personnel that will be trained, this research program will place Canada in a leading position in the fields of performance-based engineering, structural design, simulation and testing.