Advanced sensing, control, and high-temperature heating system for testing of structural members under extreme loads

先进的传感、控制和高温加热系统，用于在极端载荷下测试结构构件

• 批准号: RTI-2021-00215
• 负责人: Kwon, OhSung
• 金额: $ 10.87万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718818
• 关键词: Advanced; sensing; control; temperature; heating

Structures in civil infrastructure are designed to resist extreme loads such as earthquakes, fires, or winds. When new structural elements or structural materials are developed, it is necessary to understand how the structural elements perform during the extreme loads. For performance evaluation of the structural elements during a fire event, for example, it is essential to apply temperature to the structural elements and investigate how long the elements can sustain the temperature. If a structural system's fire performance needs to be evaluated, a hybrid (experimental-numerical) simulation method can be adopted. For performance evaluation of a structural system during a wind event, it is necessary to put a structural system in a wind tunnel and evaluate how the system responds to the wind load. The equipment requested in this proposal is to support the five research programs. The main items of equipment are heating panels and a temperature controller that can increase the temperature of a structural element up to 1,000C. The heating panels can be reconfigured to test specimens with various configurations. To measure the temperature distributions of a specimen during fire tests, thermal image cameras and thermocouples are requested. To transfer load from a hydraulic actuator to a specimen with thermal isolation, a load transfer element with a water-cooling unit is requested. To improve the simulation method for a structure subjected to wind load, a real-time controller and amplifier for sensor signals are requested. The requested items will be integrated with the research group's existing hybrid simulation equipment with which a section model of a bridge deck can be simulated in a wind tunnel testing facility. The requested equipment will provide unique hands-on testing opportunities for the co-PIs and HQPs. Various research projects in five research programs will be supported with the equipment. The research projects that will be enabled through the requested equipment are unique. Other institutions in Canada do not have similar research infrastructure. Thus, it would be difficult for such research to be carried out elsewhere in Canada. The research team benefits from its diversity as the the team members come from diverse cultural backgrounds and have a multidisciplinary approach to problem solving. In addition, several HQPs will contribute to the development of hybrid simulation methods for which the PI's institution has global recognition. The HQPs trained through the research projects will have competitive and marketable skills in the field of structural engineering that will be sought after both in Canada and internationally. The research projects enabled through the proposed equipment will improve our understanding of the behaviour of structural elements and systems subjected to extreme loads. This will ensure, ultimately, the safety of civil infrastructure in Canada.

民用基础设施中的结构旨在抵抗地震，大火或风等极端负荷。当开发新的结构元素或结构材料时，有必要了解结构元素在极端载荷过程中的性能。例如，为了对火灾事件的结构元素进行性能评估，必须将温度施加到结构元素并研究元素可以维持温度的时间多长时间。如果需要评估结构系统的火力性能，则可以采用混合（实验数）模拟方法。为了在风事件期间对结构系统进行性能评估，有必要将结构系统放入风洞中，并评估系统对风负荷的响应。 本提案中要求的设备是支持五个研究计划。设备的主要项目是加热面板和温度控制器，可以将结构元件的温度提高到1,000c。可以将加热面板重新配置以使用各种配置测试样品。为了在火灾测试期间测量样品的温度分布，请求热图像摄像机和热电偶。要将载荷从液压执行器转移到具有热隔离的样品，请要求使用带水单元的负载转移元件。 为了改善受风负载的结构的仿真方法，请求实时控制器和传感器信号的放大器。所请求的项目将与研究小组的现有混合模拟设备集成，可以在风洞测试设施中模拟桥甲板的部分模型。 请求的设备将为Co-Pis和HQP提供独特的动手测试机会。设备将支持五个研究计划中的各种研究项目。通过请求的设备将启用的研究项目是独一无二的。加拿大的其他机构没有类似的研究基础设施。因此，此类研究很难在加拿大其他地方进行。随着团队成员来自不同的文化背景，研究团队受益于其多样性，并采用多学科解决问题的方法。此外，几个HQP将有助于开发混合模拟方法，PI机构对此具有全球认可。经过研究项目培训的HQP将在结构工程领域具有竞争性和可销售的技能，这将在加拿大和国际上都受到人们的追捧。 通过拟议的设备启用的研究项目将提高我们对受到极端负载的结构元素和系统行为的理解。这将确保加拿大民用基础设施的安全。