Durability Evaluation of Pultruded GFRP Bay Window Structures
Durability Evaluation of Pultruded GFRP Bay Window Structures
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DOI：
10.1016/j.compstruct.2021.114612
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发表时间：
2021-08
影响因子：
6.3
通讯作者：
Yuwei Wu;P. Feng;Yi Ding;Tianqiao Liu;Xiao Zhang
中科院分区：
文献类型：
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作者：
Yuwei Wu;P. Feng;Yi Ding;Tianqiao Liu;Xiao Zhang
为实现节能、低碳、舒适生活，开发了一种全玻璃钢住宅飘窗。对玻璃钢飘窗在室外环境中的耐久性性能和设计进行了试验研究。首先审查了相关研究，发现报告的结果差异很大，不能直接采用。为了研究室外环境中使用的GFRP材料的耐久性，进行了四个老化试验，即浸水、干湿循环、冻融循环和紫外线辐射试验。使用目视检查和扫描电子显微镜来评价老化对材料的影响。此外，老化后的玻璃钢材料的重量，巴氏硬度，和拉伸和弯曲性能进行了测量。浸水对GFRP材料力学性能的影响最大，而冻融循环的影响可以忽略不计。此外，为了帮助设计的全玻璃钢飘窗的使用寿命为50年，设计方法提出了在这项工作中获得的实验结果的基础上。该方法在国内首次直接支持了GFRP结构长期性能的实际设计，具有很大的推广应用潜力。
An all-GFRP bay window for residential buildings is developed for energy conservation, low carbon, and comfortable life. The durability performance and design of GFRP bay window in an outdoor environment are investigated experimentally. Relevant studies were first reviewed, and the reported findings were found to significantly vary and could not be directly adopted. To investigate the durability of a GFRP material used in an outdoor environment, four aging tests were conducted, namely, water immersion, wet-dry cycle, freeze-thaw cycle and ultraviolet radiation tests. Visual inspection and scanning electron microscopy were used to evaluate the aging effects on the material. In addition, the weight, Barcol hardness, and tensile and flexural properties of the aged GFRP material were measured after the aging tests. Water immersion had the greatest effect on the mechanical properties of the GFRP material, while the freeze–thaw cycle had a negligible influence. Furthermore, to assist in the design of an all-GFRP bay window with a service life of 50 years, a design method was proposed based on the experimental results obtained in this work. This method is the first to directly support the practical design of the long-term behavior of GFRP structures in China and has great potential to be widely adopted in the future.