ISO/TR 15656:2003 防火-结构火灾情况预见能力评定导则

标准编号：ISO/TR 15656:2003

中文名称：防火-结构火灾情况预见能力评定导则

英文名称：Fire resistance — Guidelines for evaluating the predictive capability of calculation models for structural fire behaviour

发布日期：2003-12

标准范围

ISO/TR 15656:2003为评估结构火灾行为计算模型的预测能力提供了指南。它专门用于预测结构构件或组件的耐火性或耐火极限的模型。此类模型包括模拟火灾暴露承重和/或分离结构和结构元件的热行为和机械行为的模型。在ISO/TR 15656:2003中，术语模型包括基于物理模型的所有计算程序。这些基于机械或物理模型包含所有物理、数学和数值假设和近似值，用于描述结构构件和组件在火灾中的行为。一般来说，这种物理模型是作为数字计算机上的计算机代码实现的。计算方法结果的应用和扩展通常限于标准试验产生的性能。ISO/TR 15656:2003的某些方面适用于非基于物理模型的计算程序。基于机械原理的模型通常可用于计算非标准火灾暴露下结构的行为。模型评估过程对于确定火灾模型的可接受用途和局限性至关重要。不可能对一个模型进行总体评估；相反，ISO/TR 15656:2003旨在提供评估特定用途预测能力的方法。对某些应用或场景的适用性进行记录并不意味着对其他场景进行验证。

ISO/TR 15656:2003 provides guidance for evaluating the predictive capability of calculation models for structural fire behaviour. It is specific to models that are intended to predict the fire resistance or fire endurance of structural members or assemblies. Such models include models simulating the thermal behaviour and mechanical behaviour of fire-exposed load-bearing and/or separating structures and structural elements.In ISO/TR 15656:2003, the term model includes all calculation procedures that are based on physical models. These mechanistic-based or physical models encompass all the physical, mathematical and numerical assumptions and approximations that are employed to describe the behaviour of structural members and assemblies when subjected to a fire. In general, such physical models are implemented as a computer code on a digital computer. The application and extension of results from calculation methods are generally limited to performance resulting from standard tests. Aspects of ISO/TR 15656:2003 are applicable to calculation procedures not based on physical models. Mechanistic-based models can often be used to calculate the behaviour of structures in non-standard fire exposures.The process of model evaluation is critical in establishing both the acceptable uses and limitations of fire models. It is not possible to evaluate a model in total; instead, ISO/TR 15656:2003 is intended to provide methodologies for evaluating the predictive capabilities for specific uses. Documentation of suitability for certain applications or scenarios does not imply validation for other scenarios.

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