Fire Resistance Behaviour of FRP Reinforced Concrete Slabs

应用纤维增强聚合物(FRP)钢筋创造新的耐用混凝土结构正迅速成为北美基础设施的可行选择。虽然FRP加固主要应用于桥梁建设，但FRP加固在多层建筑、停车场和工业结构中具有巨大的潜力。然而，在将FRP用于建筑结构构件之前，必须确定FRP钢筋混凝土构件满足建筑规范中规定的耐火要求。拟议的研究将通过材料试验、全尺寸火灾试验和数值模拟相结合的方式来解决这一知识差距。因此，本研究的主要目的是表征FRP筋的高温材料性能，通过全尺寸火灾试验和数值模拟来评价FRP筋混凝土板的耐火性能，并为FRP筋混凝土板的耐火性能评估制定设计准则。材料试验将在高温下对FRP筋进行，而全尺寸火灾试验将在构件水平上评估FRP钢筋混凝土板的性能。FRP加固板的热性能和结构性能的数值模拟将纳入材料试验的结果，并将根据全尺寸火灾试验的结果对模型进行验证。全尺寸火灾试验的结果将与数值模拟相结合，以制定耐火设计建议。从研究中获得的知识将使行业合作伙伴(普尔图尔和BP自动化)更好地了解他们的玻璃钢产品在高温下的性能，并在必要时改进他们的产品。一名博士生和一名博士后研究员将接受培训。最后，该项目将通过产生有关FRP钢筋混凝土板在火灾中的性能的新知识，为工程研究界做出贡献，这些知识将被纳入新的FRP钢筋混凝土板设计建议，作为建筑FRP标准CSA S806的一部分。

Applications of fibre reinforced polymer (FRP) reinforcing bars for creating new, durable concrete structures are rapidly becoming a viable option in North American infrastructure. While FRP reinforcement has mainly been applied for the construction of bridges, there is enormous potential for FRP reinforcement in multi-storey buildings, parking garages, and industrial structures. However, before FRP can be used in structural members in buildings, the ability of FRP reinforced concrete members to meet fire resistance requirements, prescribed in building codes, must be established. The proposed research will address this knowledge gap through a combination of material testing, full-scale fire tests, and numerical modelling. Thus, the main objectives of this research are to characterize the high temperature material properties of FRP bars, to evaluate the performance in fire of FRP reinforced concrete slabs through full-scale fire testing and numerical modelling, and to develop design guidelines for estimating the fire resistance of FRP reinforced concrete slabs. Material tests will be conducted on FRP bars at high temperature while full-scale fire tests will evaluate the performance of FRP reinforced concrete slabs at the component level. Numerical modelling of the thermal and structural performance of FRP reinforced slabs will incorporate the results of the material tests, and the models will be validated against the results from the full-scale fire tests. The results of the full-scale fire tests will be combined with numerical modelling to develop design recommendations for fire resistance. The knowledge gained from the research will allow the industry partners (Pultrall and BP Automation) to better understand the performance of their FRP products at high temperature, and if necessary, to enhance their products. One PhD student and one postdoctoral fellow will be trained. Finally, the project will contribute to the engineering research community by generating new knowledge on the performance of FRP reinforced concrete slabs when exposed to fire that will be incorporated into new design recommendations for FRP reinforced concrete slabs as part of the Canadian Standard CSA S806 on FRP for buildings.