多自由度实时混合火力测试

IF 3.4 3区 工程技术 Q2 ENGINEERING, CIVIL
Silvio Renard , Jean-Christophe Mindeguia , Fabienne Robert , Stéphane Morel , Jean-Marc Franssen
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引用次数: 0

摘要

要对民用建筑的耐火性能进行实验评估,对整体结构进行测试的成本非常高,但对单个结构元素进行的标准测试有时在边界条件方面过于简单。混合防火测试为解决这些限制提供了一个很有前景的方案,但进行此类测试在技术上具有挑战性,而且很少进行全尺寸测试。目前的方法依赖于高性能传感器和执行器系统,以及对被测构件刚度的假设。本文介绍了对混凝土梁进行 3 自由度全尺寸实时测试的详细方法和结果。尽管使用了精度相对较低的传感器、普通液压致动器,并且没有对测试元件的刚度进行假设,但使用自适应控制器仍能保持稳定并达到合理的精度。通过与使用标准耐火试验测试的相同构件进行比较,证明了该技术在更准确地反映受测构件在现实条件下的性能方面的有用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Full-scale hybrid fire test in real-time with multiple degree of freedom

To experimentally assess the fire resistance of civil structures, testing whole structures is very costly but the standard tests on individual structural elements can sometimes be too simplistic, regarding their boundary conditions. Hybrid fire testing offers a promising solution to these limitations, but performing such tests is technically challenging and few full-scale tests have been conducted. Current approaches rely on high-performance sensors and actuator systems, as well as assumptions about the stiffness of the tested element. This paper presents the detailed methodology and results of a full-scale, real-time test with 3 degrees of freedom on a concrete beam. The use of an adaptive controller allowed for maintaining stability and achieving reasonable precision despite the use of relatively low-precision sensors, regular hydraulic actuators, and no assumptions about the tested element’s stiffness. The comparison with the same element tested using a standard fire resistance test demonstrates the usefulness of this technique in achieving a more accurate representation of the performance of the tested element in realistic conditions.

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来源期刊
Fire Safety Journal
Fire Safety Journal 工程技术-材料科学:综合
CiteScore
5.70
自引率
9.70%
发文量
153
审稿时长
60 days
期刊介绍: Fire Safety Journal is the leading publication dealing with all aspects of fire safety engineering. Its scope is purposefully wide, as it is deemed important to encourage papers from all sources within this multidisciplinary subject, thus providing a forum for its further development as a distinct engineering discipline. This is an essential step towards gaining a status equal to that enjoyed by the other engineering disciplines.
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