AMASS: Advanced Manufacturing for the Assembly of Structural Steel

这项研究活动是美国、爱尔兰和北爱尔兰（英国）三方合作的美国组成部分，旨在研究等离子体和激光切割的先进制造技术，以创造一种全新的互锁钢连接，这种连接既不依赖焊接也不依赖螺栓，这两种方法既耗时又昂贵。到目前为止，先进的制造设备仅用于加速切割金属板或其他传统制造活动的传统工艺。这些方法没有充分利用设备？这个项目将通过研究潜在的科学和工程规范，为钢结构建筑的改造奠定基础，通过精确的体积切割创造出连锁连接。这种连接系统可以从根本上改变结构钢的制造、组装、解构和再利用方式。这类互锁连接代表了半个多世纪以来第一个通用结构钢连接器系统的引入，它将更好地将先进制造业引入美国、爱尔兰和英国的建筑行业。此外，它为大量进口的材料的大量再利用提供了潜力。该活动提供了一个创新的外展计划，通过网络研讨会和研讨会进行广泛的技术传播，并通过国家级学生竞赛为K-12学生提供教育外展。钢结构装配先进制造（AMASS）系统通过建筑信息模型（BIM）平台，实现设计、制造、安装和维护之间的集成，实现先进连接。对开口钢段进行全自动、精确的体积切割，对联锁连接的载荷传递机制和失效模式提出了挑战。研究活动包括关闭有关力学，负载阻力和设计的知识差距与连锁连接的钢系统。此外，还将应用多尺度建模来研究联锁连接的力学，包括应力和应变集中、破裂潜力和破坏模式，并通过参数研究来优化连接的几何形状。物理数据将从具有联锁连接的梁、柱和梁-柱组合的全尺寸试验中收集，以确定弯曲、剪切和轴向载荷的标称能力以及适当组合的能力。

This research activity is the US component of a tri-partite collaboration between the US, Ireland, and Northern Ireland (UK) to investigate advanced manufacturing techniques in plasma and laser cutting for the creation of an entirely new class of interlocking steel connections that rely on neither welding nor bolting, both of which are time-consuming and expensive. To date, advanced manufacturing equipment has only been used to accelerate traditional processes for cutting sheet metal or other conventional fabrication activities. Such approaches have not capitalized on the equipment?s full potential, and this project will lay the groundwork to transform steel building construction by investigating the underlying science and engineering precepts to interlocking connections created from precise, volumetric cutting. Such connection system could radically transform how structural steel is fabricated, assembled, deconstructed, and reused. The class of interlocking connections represents the introduction of the first universal, structural steel connector system in more than one-half a century, and it will better engage advanced manufacturing into the US, Irish & UK construction industries. Moreover, it offers the potential for significant reuse of materials that are heavily imported. The activity offers an innovative outreach program with broad-based technical dissemination through webinars and workshops, and educational outreach for K-12 students by means of national-level, student competitions.The advanced manufacturing for the assembly of structure steel (AMASS) system enhances the integration between design, fabrication, installation and maintenance through building information modeling (BIM) platforms to implement advanced connections. Fully automated, precise, volumetric cutting of open steel sections introduces intellectual challenges regarding the load-transfer mechanisms and failure modes for interlocking connections. The research activity includes closing the knowledge gaps concerning the mechanics, load resistance, and design of steel systems with interlocking connections. Also multi-scale modeling will be applied to investigate the mechanics of interlocking connections including stress and strain concentrations, fracture potential and failure modes, and to optimize connection geometry through parameter studies. Physical data will be collected from full-scale tests of beams, columns and beam-column assemblages with interlocking connections to determine nominal capacities in flexure, shear and axial loading, as well as for appropriate combinations.