Deconstructable Systems for Sustainable Design of Steel and Composite Structures

用于钢结构和复合结构可持续设计的可解构系统

• 批准号: 1200820
• 负责人: Jerome Hajjar
• 金额: $ 25万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1200820&HistoricalAwards=false
• 关键词: Deconstructable; Systems; Sustainable; Design; Steel

This project explores a new design approach, Design for Deconstruction that has emerged to facilitate future reuse of materials. The objectives of the proposed research are to develop new structural system concepts and establish comprehensive life-cycle assessment for deconstructable steel and composite steel/concrete construction. Design for Deconstruction coupled with the use of recycled materials will facilitate sustainable construction. Composite steel/concrete floor systems, by far the most ubiquitous type of structural steel framing for commercial and institutional buildings, is a key focus of this work. These floor systems currently require monolithic construction to ensure adequate performance. While these floor system materials may be recycled, currently they cannot be refabricated and reused in buildings. The proposed system maintains the efficiency benefits offered by composite action of steel and concrete construction, including reduced steel beam sizes and flexible floor framing patterns, while directly addressing the need to reduce waste in the construction industry. The research includes quantification of deconstructable connection behavior through conducting full-scale component tests of clamping connections, and conducting full-scale tests and corroborating analyses of the proposed deconstructable composite floor system to validate the integrity of the system. The project includes advancement of the methodologies for conducting environmental life-cycle assessment of deconstructable systems, and developing design strategies for deconstructable steel framing systems. The proposed research is expected to establish fundamental strategies for predicting the behavior and design of sustainable steel structures through combining prefabrication strategies with Design for Deconstruction to achieve direct reusability of composite floor systems. Coupled with advancement in life-cycle assessment strategies for deconstructable steel framing systems, this research is expected to provide fundamental knowledge towards encouraging and codifying a reduction in material use and associated environmental impacts in the steel construction industry. Since building construction accounts for a significant portion of all environmental impacts associated with buildings, reusing composite floors will have significant environmental benefits.

该项目探讨了一种新的设计方法，即解构设计，以促进将来的材料再利用。拟议研究的目标是开发新的结构系统概念，并为可解构的钢和复合钢/混凝土结构建立全面的生命周期评估。解构的设计加上再生材料的使用将有助于可持续结构。 复合钢/混凝土地板系统是迄今为止用于商业和机构建筑的最普遍的结构钢框架类型，是这项工作的重点。这些地板系统目前需要整体构造以确保足够的性能。 尽管这些地板系统材料可能会被回收，但目前无法在建筑物中进行重新存放和重复使用。拟议的系统保持了钢和混凝土结构的复合作用所提供的效率好处，包括减少钢梁尺寸和柔性地板框架图案，同时直接解决了减少建筑行业中浪费的需求。 该研究包括通过进行夹紧连接的全尺度组件测试，进行全尺度测试的全尺度组件测试，进行全尺度测试以及确认所提出的可解构复合地板系统以验证系统完整性的分析。 该项目包括进步的方法，用于对可解构系统进行环境生命周期评估，并为可解构的钢框架系统制定设计策略。 预计拟议的研究将建立基本策略，以通过将预制策略与设计的设计结合到解构的设计，以实现复合地板系统的直接可重复使用性，以预测可持续钢结构的行为和设计。再加上可解构钢框架系统的生命周期评估策略的进步，这项研究有望提供基本知识，以鼓励和编纂钢铁建筑行业的材料使用和相关的环境影响。由于建筑构造占与建筑物相关的所有环境影响的很大一部分，因此复合地板将具有巨大的环境利益。