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首页> 外文期刊>Journal of structural fire engineering >Numerical modeling of structural frames with infills subjected to thermal exposure: State-of-the-art review
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Numerical modeling of structural frames with infills subjected to thermal exposure: State-of-the-art review

机译：带有受热暴露的填充物的结构框架的数值模拟：最新进展

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Purpose - Reinforced concrete structural frames with masonry infills (infill-frames) are commonly used for construction worldwide. While the behavior of such frames has been studied extensively in the context of earthquake loading, studies related to their fire performance are limited. Therefore, this study aims to characterize the behavior of infill-frames under fire exposure by presenting a state-of-the-art literature review of the same. Design/methodology/approach - Both experimental and computational studies have been included with a special emphasis on numerical modeling (simplified as well as advanced). The cold behavior of the infill-frame and its design requirements in case of fire exposure are first reviewed to set the context. Subsequently, the applicability of numerical modeling strategies developed for modeling cold infill-frames to simulate their behavior under fire is critically examined. Findings - The major hurdles in developing generic numerical models for analyzing thermo-mechanical behavior of infill-frames are identified as: Lack of temperature-dependent material properties, scarcity of experimental studies for validation and idealizations in coupling between thermal and structural analysis. Originality value - This study presents one of the most popular research problems connected with practical and reliable utilization of numerical models, as a good alternative to expensive traditional furnace testing, in assessing fire resistance of infill-frames. It highlights major challenges in thermo-mechanical modeling of infillframes and critically reviews the available approaches for modeling infill-frames subjected to fire.
机译：目的-带有砖石填充物的钢筋混凝土结构框架（填充框架）在世界范围内通常用于建筑。尽管已经在地震载荷的情况下对这种框架的性能进行了广泛的研究，但有关其耐火性能的研究却很有限。因此，本研究旨在通过介绍填充框架在火中的行为来表征其行为。设计/方法/方法-实验和计算研究均已包括在内，并特别着重于数值建模（简化和高级）。首先要检查填充框架的冷性能及其在火灾下的设计要求，以设置环境。随后，严格研究了用于模拟冷填充框架以模拟其在火中行为的数值建模策略的适用性。发现-开发用于分析填充框架热力学行为的通用数值模型的主要障碍被确定为：缺乏与温度有关的材料特性，缺乏用于验证的实验研究以及热与结构分析之间耦合的理想化。原创性价值-这项研究提出了与实用和可靠地使用数值模型有关的最受欢迎的研究问题之一，它是评估昂贵的传统炉膛测试填充框架耐火性的良好替代方案。它突出显示了填充框架的热机械建模中的主要挑战，并严格审查了遭受火灾的填充框架建模的可用方法。

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