Collaborative Research: Semi-Active Controlled Cladding Panels for Multi-Hazard Resilient Buildings

合作研究：用于多灾害防御建筑的半主动控制覆层板

• 批准号: 1463497
• 负责人: James Ricles
• 金额: $ 30万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-06-01 至 2021-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1463497&HistoricalAwards=false
• 关键词: Collaborative; Research; Semi; Active; Controlled

Building facades typically consist of cladding that is placed on the outside perimeter of the structure. Traditionally, cladding serves purposes of providing architectural envelope and protection to the occupants from the outside elements. The goal of this research project is to rethink cladding systems as multi-functional structural units. Not only would the cladding serve its traditional purposes, but it would also be engaged as an engineered system to protect the structure against multiple hazards, including seismic, wind, and blast loads. Cladding serves both as the point of application of externally applied lateral loads such as wind and blast as well as a contributor of added inertia to seismic or wind-induced vibrations. This project will explore the use of semi-active controlled connections between cladding and the structural framing of a building - these connections will be capable of providing variable damping to mitigate the effects of extreme loading. The results of the project will engage the cladding on a building to enhance a structure's resilience to multiple hazards. The professions of architecture and structural engineering will need to collaborate in design of cladding in the future.The focus of this project is to develop computational simulation of a prototype semi-active damping device, installed between the cladding and structural frame, to the varying loading frequencies and intensities from multiple hazards. The objective of the system is twofold: (1) to engage the cladding as a mass damper to mitigate inter-story drift due to lateral load vibrations; and (2) to utilize the device as an energy dissipator under lateral loads. An innovative semi-active device with decentralized control laws will be developed to satisfy the varying energy dissipation and control objectives associated with each hazard. The research team will perform advanced nonlinear numerical simulations of realistic buildings with semi-active damping devices to assess the various parameters that influence the control laws and performance of the devices. The simulations will be validated through large-scale experiments in the laboratory. The experiments will include real-time hybrid simulations for wind and seismic loading that account for the complete building system and its interactions with the semi-active damping devices and cladding. Air-blast shock tube tests will be conducted to simulate blast loading. Performance-based design procedures will be established to integrate the design of semi-active cladding within a holistic structural design approach.

建筑立面通常包括覆层放置在结构的外部。传统上，覆层的目的是从外部要素为乘员提供建筑信封和保护。该研究项目的目的是将覆层系统重新考虑为多功能结构单元。覆层不仅可以实现其传统目的，而且还可以作为一种工程系统，以保护结构免受多种危害，包括地震，风和爆炸负荷。覆层既是外侧施加的侧向载荷（例如风和爆炸）的应用，也是对地震或风能诱发的振动增加的惯性的贡献者。该项目将探索覆层和建筑物结构框架之间半活性控制连接的使用 - 这些连接将能够提供可变阻尼以减轻极端负载的影响。 该项目的结果将使建筑物上的覆层接合，以增强结构对多种危害的弹性。建筑和结构工程的职业将在未来的设计中进行合作。该项目的重点是开发针对覆层和结构框架之间的原型半活动阻尼设备的计算模拟，以与多种危害的载荷频率和强度不同。系统的目的是双重的：（1）将覆层作为质量阻尼器，以减轻由于横向载荷振动而导致的层间漂移； （2）将设备用作横向载荷下的能量耗散器。将开发具有分散控制定律的创新半活性装置，以满足与每个危害相关的各种能量耗散和控制目标。研究团队将使用半活性阻尼设备对现实建筑物进行高级非线性数值模拟，以评估影响设备控制法律和性能的各种参数。模拟将通过实验室的大规模实验进行验证。这些实验将包括用于风和地震载荷的实时混合模拟，该模拟构成了完整的建筑系统及其与半活动阻尼装置和覆层的相互作用。 将进行气动冲击管测试以模拟爆炸载荷。将建立基于绩效的设计程序，以将半活性覆层的设计集成到整体结构设计方法中。

项目成果

Numerical verification of variable friction cladding connection for multihazard mitigation

用于缓解多灾种的可变摩擦覆层连接的数值验证

• DOI: 10.1177/1077546320923933
• 发表时间: 2021
• 期刊: Journal of Vibration and Control
• 影响因子: 2.8
• 作者: Gong, Yongqiang;Cao, Liang;Laflamme, Simon;Ricles, James;Quiel, Spencer;Taylor, Douglas
• 通讯作者: Taylor, Douglas