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首页> 外文期刊>Journal of structural fire engineering >A Component-Based Model for Fin-Plate Connections in Fire
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A Component-Based Model for Fin-Plate Connections in Fire

机译：火中鳍板连接的基于组件的模型

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摘要

A component-based model for fin-plate connections has been developed to study the robustness of simple beam-to-column connections at elevated temperatures. The key aspect of this component method is the characterisation of the force-displacement properties of each active component at any temperature, represented by a non-linear "spring". The prescribed temperature-dependent characteristics of any given bolt row are governed by the failure mechanism of the weakest component, based on experimental and analytical findings. A major additional complication involves force reversal in components, which may occur because of temperature change, without any physical reversal of displacement. The Masing Rule has been adapted to incorporate this effect for particular force directions. To account for the bolt slip phases, force transitions between tension and compression take place only when positive contact between a bolt and the edge of its bolt hole is re-established. The results of high-temperature tests on connections have been used to substantiate the developed component model. The component-based connection model has also been used to study joint behaviour in structural sub-frame analyses. This approach will enable more valid performance-based assessment of the overall responses of connections, including their robustness, in design fire scenarios.
机译：已开发出用于翅片板连接的基于组件的模型，以研究高温下简单梁到柱连接的鲁棒性。该构件方法的关键方面是在任何温度下每个主动构件的力-位移特性的表征，以非线性“弹簧”表示。根据实验和分析结果，任何给定螺栓行的规定温度相关特性均由最弱组件的失效机理决定。一个主要的附加并发症涉及部件的力反转，这可能是由于温度变化而发生的，而没有任何物理上的位移反转。 Masing规则已被修改为在特定的力方向上包含此效果。为了考虑螺栓的滑移阶段，仅当重新建立螺栓与其螺栓孔边缘之间的正接触时，才在拉伸和压缩之间进行力转换。连接的高温测试结果已用于证实开发的组件模型。基于组件的连接模型也已用于研究结构子框架分析中的关节行为。这种方法将使在设计火灾情况下对连接的整体响应（包括其坚固性）进行更有效的基于性能的评估。

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