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Experimental study of FRP-strengthened RC bridge girders subjected to fatigue loading

机译:FRP加固RC桥梁疲劳荷载试验研究。

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摘要

The practical application of composite materials for retrofitting of reinforced concrete bridge T-sectional girders was investigated. Carbon and glass fibre-reinforced polymers (CFRP and GFRP) saturated in an epoxy resin matrix were used to enhance the service load-carrying capacity of the bridge. Three 5-m-long simply supported beams were tested under monotonic and cyclic loads for comparison to a beam subjected to more than 10~6 cycles in the service load range. The results show that an FRP-strengthened T-beam subjected to fatigue loading demonstrated excellent behaviour that can be expected from well-detailed retrofit schemes incorporating carbon and glass fibre laminates.
机译:研究了复合材料在钢筋混凝土桥梁T型截面梁改造中的实际应用。碳和玻璃纤维增​​强的聚合物(CFRP和GFRP)被浸入环氧树脂基体中,以增强桥梁的承载能力。在单调和循环载荷下测试了三个5 m长的简支梁,以与在使用载荷范围内经受10至6个以上循环的梁进行比较。结果表明,经受疲劳载荷的FRP加固T型梁表现出出色的性能,这可以从包含碳纤维和玻璃纤维层压板的详细改良方案中获得。

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