Advanced Simulation Platforms for Performance Based Engineering

用于基于性能的工程的高级仿真平台

• 批准号: RGPIN-2022-05127
• 负责人: Mercan, Oya
• 金额: $ 3.13万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748873
• 关键词: Advanced; Simulation; Platforms; Performance; Based

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.

基于性能的工程(PBE)是一种设计新建筑或评估现有结构的平衡方法，通常在建筑成本和最终性能之间实现最佳平衡。尽管PBE在地震工程实践(即基于性能的地震工程-PBEE)中取得了成功的进展，但将其应用于风能工程(即基于性能的风工程-PBWE)的研究还很有限。从结构设计的角度来看，PBWE的主要贡献在于通过允许材料的非弹性响应，找到了一种既符合实际又更经济的设计方案，满足了防倒塌级别的要求。虽然有大量的文献与结构在地震荷载作用下的非线性分析有关，但在风荷载作用下的非线性分析文献却并非如此。因此，这里提出了一个全面的研究计划来解决这些差距。该计划由四个相辅相成的项目组成，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，其中(I)不同保真度的计算流体力学(CDF)模拟将根据全面的风洞数据库进行验证，从而推动在结构工程应用中使用CFD工具的前景(项目1，PBWE)；(Ii)CFD模拟将与结构动力学模拟相结合，其中从CFD模拟获得的实际风荷载条件将用于分析结构在线性和非线性范围内的动态性能，从而解决对非线性结构在风荷载下行为缺乏了解的问题(项目2，PBWE)；(Iii)CFD模拟将与结构模拟相结合，同时考虑流体结构的相互作用，从而清楚地了解具有流致振动机制的非线性结构在风荷载下的响应(项目3，PBWE)；(Iv)实时硬件定制将使用不同的并行计算策略，为实时混合模拟(RTHS)实现更逼真的数值子结构模型，从而显著扩大RTHS作为一种先进测试方法在PBE(项目4，PBEE，PBWE)中的应用范围。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帮助设计和理解由于地震和风事件而导致的不同危险条件下的下一代结构。随着研究成果的传播，并通过将接受培训的高素质人员，这一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。