Natural Hazards Engineering Research Infrastructure: Experimental Facility with Large-Scale, Multi-directional, Hybrid Simulation Testing Capabilities

自然灾害工程研究基础设施：具有大规模、多方位、混合模拟测试能力的实验设施

• 批准号: 1520765
• 负责人: James Ricles
• 金额: $ 488.7万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1520765&HistoricalAwards=false
• 关键词: Natural; Hazards; Engineering; Research; Infrastructure; Natural; Hazards; Engineering; Research; Infrastructure

The Natural Hazards Engineering Research Infrastructure (NHERI) will be supported by the National Science Foundation (NSF) as a distributed, multi-user national facility that will provide the natural hazards research community with access to research infrastructure that will include earthquake and wind engineering experimental facilities, cyberinfrastructure, computational modeling and simulation tools, and research data, as well as education and community outreach activities. NHERI will be comprised of separate awards for a Network Coordination Office, Cyberinfrastructure, Computational Modeling and Simulation Center, and Experimental Facilities, including a post-disaster, rapid response research facility. Awards made for NHERI will contribute to NSF's role in the National Earthquake Hazards Reduction Program (NEHRP) and the National Windstorm Impact Reduction Program. NHERI continues NSF's emphasis on earthquake engineering research infrastructure previously supported under the George E. Brown, Jr. Network for Earthquake Engineering Simulation as part of NEHRP, but now broadens that support to include wind engineering research infrastructure. NHERI has the broad goal of supporting research that will improve the resilience and sustainability of civil infrastructure, such as buildings and other structures, underground structures, levees, and critical lifelines, against the natural hazards of earthquakes and windstorms, in order to reduce loss of life, damage, and economic loss. Information about NHERI resources will be available on the DesignSafe-ci.org web portal.NHERI Experimental Facilities will provide access to their experimental resources, user services, and data management infrastructure for NSF-supported research and education awards. This award will provide a NHERI Experimental Facility at Lehigh University to support research to mitigate the impact of natural hazards, including earthquakes, on structures. This facility will provide experimental resources for accurate, large-scale, multi-directional simulations to investigate the effects of natural hazard events on civil infrastructure systems, with potential soil-foundation effects. The new discoveries and knowledge from these simulations will enable researchers to develop and validate new hazard mitigation solutions and innovative hazard-resistant structural concepts. The research conducted by facility users will contribute to the development of the next generation workforce for natural hazards engineering research, educational activities, and professional practice. The education and community outreach programs, along with the strategic education partnerships of the facility, will target a diverse audience and attract young individuals into science, technology, and engineering, while also reaching out to educate and inform a broader community. This facility will conduct annual workshops for prospective users and will host Research Experiences for Undergraduate students.The facility's experimental resources, which include a strong floor, multi-directional reaction wall, static and dynamic actuators, and testing algorithms, will support large-scale, multi-direction, real-time hybrid simulations that combine physical experiments with computer-based simulations for evaluating performance of large-scale components and systems. The types of laboratory simulations and tests enabled by the facility include: (1) hybrid simulation (HS), which combines large-scale physical models with computer-based numerical simulation models; (2) geographically distributed hybrid simulation (DHS), which is a HS with physical models and/or numerical simulation models located at different sites; (3) real-time hybrid earthquake simulation (RTHS), which is a HS conducted at the actual time scale of the physical models; (4) geographically distributed, real-time hybrid earthquake simulation, which combines DHS and RTHS; (5) dynamic testing, which loads large-scale physical models at real-time scales through predefined load histories; and (6) quasi-static testing, which loads large-scale physical models at slow rates through predefined load histories. The facility resources will enable multiple, large-scale simulations and tests to be conducted simultaneously, allowing numerous users to work concurrently without significant interruption. The large-scale hybrid simulations are a unique resource for system-level response data, since they enable the definition of the "system" to be expanded well beyond the size of typical laboratory physical models. At the same time, due to its large size, the facility can accommodate large-scale physical models, which reduces scaling effects associated with typical, small physical models. A broad array of instrumentation, large-scale data acquisition systems, and advanced sensors will provide the system-level data needed for advancing computational modeling and simulation. The facility will utilize the HS capabilities for earthquake engineering to develop hybrid wind engineering simulation capabilities within the facility. The HS being advanced at the facility has the potential for broader impacts in other fields of science and engineering, where combining physical models and numerical simulation models will enable more holistic definitions of "the system" in experimental research.

自然灾害工程研究基础设施（NHERI）将由国家科学基金会（NSF）作为分布式的多用户国家设施的支持，该设施将为自然危害研究社区提供获得研究基础设施的访问，其中将包括地震和风力工程实验设施，包括Cyber​​infratsirtions，Cyber​​infrasture，计算模型模型，计算模型和研究工具以及研究和研究和研究和研究和研究，以及社区，以及社区，以及研究和研究和研究和社区。 NHERI将由网络协调办公室，网络基础设施，计算建模和仿真中心以及实验设施（包括灾后，快速响应研究设施）的单独奖项组成。为NHERI颁发的奖项将有助于NSF在国家地震危害计划（NEHRP）和全国风暴影响减少计划中的作用。 NHERI继续NSF强调地震工程研究基础设施，以前在George E. Brown，Jr。Jr.地震工程模拟网络中作为NEHRP的一部分，但现在扩大了支持，以包括风力工程研究基础设施。 NHERI的广泛目标是支持研究，以改善民用基础设施的弹性和可持续性，例如建筑物和其他结构，地下结构，堤防和关键的寿命，以应对地震和风暴的自然危害，以减少生命，损失和经济损失。有关NHERI资源的信息将在designsafe-ci.org Web Portal.nheri实验设施上提供，将为NSF支持的研究和教育奖提供访问其实验资源，用户服务和数据管理基础架构。该奖项将为利哈伊大学提供NHERI实验设施，以支持研究，以减轻包括地震在内的自然危害对结构的影响。该设施将为准确，大规模的多向模拟提供实验资源，以研究自然危害事件对民用基础设施系统的影响，并具有潜在的土壤发现效果。这些模拟中的新发现和知识将使研究人员能够开发和验证新的危害解决方案和抗创新危险的结构概念。设施使用者进行的研究将有助于发展下一代自然危害工程研究，教育活动和专业实践的劳动力。教育和社区外展计划以及该设施的战略教育合作伙伴关系，将针对多样化的受众，并吸引年轻人进入科学，技术和工程，同时也可以教育和为更广泛的社区提供教育。该设施将为潜在的用户举办年度研讨会，并将为本科生举办研究经验。该设施的实验资源包括强大的地板，多方向反应墙，静态和动态的执行器以及测试算法，将支持大规模，多区域，实时混合模拟的大型物理模拟和计算机基于计算机的构图的大规模，多个方向，并对计算机进行计算机的构图。设施实现的实验室模拟和测试的类型包括：（1）混合模拟（HS），将大型物理模型与基于计算机的数值模拟模型相结合； （2）地理分布的混合模拟（DHS），它是一个HS，其物理模型和/或数值模拟模型位于不同位置； （3）实时混合地震模拟（RTHS），它是在物理模型的实际时间尺度上进行的HS； （4）结合DHS和RTHS的地理分布的实时杂交地震模拟； （5）动态测试，该测试通过预定义的负载历史在实时尺度上加载大规模的物理模型； （6）准静态测试，该测试通过预定义的负载历史以缓慢的速率加载大规模物理模型。该设施资源将使多个大规模的模拟和测试能够同时进行，从而使许多用户可以同时工作而不会大幅中断。大规模混合模拟是系统级响应数据的独特资源，因为它们使“系统”的定义能够远远超出典型实验室物理模型的规模。同时，由于其尺寸较大，该设施可以容纳大规模的物理模型，从而降低了与典型的小型物理模型相关的缩放效果。广泛的仪器，大规模的数据采集系统和高级传感器将提供用于推进计算建模和仿真所需的系统级数据。该设施将利用地震工程的HS功能来开发设施内的混合风工程模拟功能。在设施中提前的HS具有在其他科学和工程领域产生更广泛影响的潜力，在这些领域中，将物理模型和数值模拟模型相结合将在实验研究中对“系统”的更全面定义。