PFI:AIR - TT: Innovative High-Performance Cold-Formed Steel Wall System for Light Framed Construction

PFI:AIR - TT：用于轻型框架结构的创新高性能冷弯型钢墙体系统

• 批准号: 1445065
• 负责人: Cheng Yu
• 金额: $ 19.97万
• 依托单位: University of North Texas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-15 至 2017-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1445065&HistoricalAwards=false
• 关键词: PFI; AIR; TT; Innovative; Performance

This PFI: Accelerating Innovation Research (AIR) Technology Translation (TT) project focuses on translating a research discovery on the use of perforated corrugated steel decks as sheathing to fill the need for non-combustible high-performance shear walls for mid-rise light-framed buildings. Mid- and low-rise buildings comprise the majority of buildings in the United States. The mid-rise multi-family homes (4-9 stories) are becoming the housing trend to meet the increasing demands of population growth and urbanization. The use of cold-formed steel (CFS) would be highly cost-effective for mid-rise light-framed buildings. However the existing shear wall technologies impede the use of CFS in mid-rises due to the requirements of non-combustibility and high structural performance (shear strength, stiffness, ductility). The project will result in a prototype of the proposed non-combustible high-performance steel shear wall technology. This new technology has the following unique features: a) it uses the perforation in the sheathing as energy dissipating fuses to achieve high ductility; b) it uses the corrugation in the sheathing to achieve high strength and stiffness; c) it uses only CFS members; d) the sheathing to framing connection method is optimized for high efficiency; e) it has the same thickness as the non-shear walls; and f) it enables the engineers to control the damage locations to be away from critical building components. These features provide the following advantages over the current state-of-the-art technologies: higher structural performance, lower overall cost, non-combustibility, and controllable failure mechanism when compared to the leading competing technologies, namely the wood based panel shear wall, the steel sheet shear wall, the steel-gypsum composite panel shear wall, and the diagonal steel strap bracing shear wall in the mid-rise construction market.This project addresses the following technology gaps as it translates from research discovery toward commercial application. It will investigate the feasibility of positioning the corrugated deck within the CFS frame in order to form standard wall thicknesses while maintaining high structural performances. A major research effort will be made to maximize the shear wall performance by developing optimal parameters in perforation, corrugation, and CFS framing details via numerical simulations and full-scale experiments. In addition, personnel involved in this project, undergraduate and graduate students, will receive innovation and technology translation experiences through modeling, building, and testing CFS shear walls. The potential economic impact is expected to be significant for the mid-rise construction industry, which will contribute to the U.S. competitiveness in building industries. The project involves research collaboration between the University of North Texas and two industrial partners, Verco Decking Inc. and Nucor Building Systems. The industrial partners will provide deck manufacturing capacities, assist in developing an efficient connection method, and guide commercialization aspects in this technology translation effort.

该PFI：加速创新研究（AIR）技术翻译（TT）项目的重点是翻译有关使用穿孔的瓦楞钢甲板的研究发现，作为护套，以填补对中期浅层固定建筑的不可燃烧的高性能剪力壁的需求。中层和低层建筑包括美国的大多数建筑物。中规模多户住宅（4-9个故事）正成为满足人口增长和城市化需求不断增长的住房趋势。使用冷形成钢（CFS）对于中层浅层建筑物的成本效益高。但是，由于非燃烧性和高结构性能（剪切强度，刚度，延展性）的要求，现有的剪切壁技术阻碍了CFS在中期中的使用。该项目将导致提议的非耐性高性能钢剪墙技术的原型。这项新技术具有以下独特的功能：a）它使用护套中的穿孔作为耗电熔断的熔断器来实现高延展性； b）它使用护套中的波纹来实现高强度和刚度； c）它仅使用CFS成员； d）优化了框架连接方法的护套，以高效； e）它具有与非剪切壁相同的厚度； f）使工程师能够控制损坏位置远离关键建筑组件。 These features provide the following advantages over the current state-of-the-art technologies: higher structural performance, lower overall cost, non-combustibility, and controllable failure mechanism when compared to the leading competing technologies, namely the wood based panel shear wall, the steel sheet shear wall, the steel-gypsum composite panel shear wall, and the diagonal steel strap bracing shear wall in the mid-rise construction market.This project addresses the following technology gaps从研究发现转化为商业应用。它将研究在CFS框架内定位波纹甲板的可行性，以形成标准的壁厚，同时保持高结构性能。通过开发穿孔，波纹和CFS框架框架细节的最佳参数，将通过数值模拟和全尺度实验来开发最佳的剪切壁性能。此外，参与该项目的人员，本科生和研究生，将通过建模，建筑和测试CFS剪力墙获得创新和技术翻译体验。预计潜在的经济影响对于中期建筑业将具有重要意义，这将有助于美国在建筑行业中的竞争力。 该项目涉及北德克萨斯大学与两个工业合作伙伴，Verco Decking Inc.和Nucor Building Systems之间的研究合作。工业合作伙伴将提供甲板制造能力，帮助开发有效的连接方法，并指导这种技术翻译工作中的商业化方面。