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纤维复材(FRP)板在桥梁结构和水工结构领域有着极大的发展潜力,研究其动力性能十分有必要。通过对两边简支FRP空心板进行的一系列集中荷载冲击试验,来验证FRP板的抗冲击性能并分析其动力响应。分析了相同质量落锤在不同冲击势能冲击下,FRP板各点的位移、应变以及加速度的响应模式,包括时程分析以及最大值分析,得到了加速度在试验板内的峰值分布规律及最大挠度和最大应变随冲击势能的变化趋势。结果表明:FRP空心板具有良好的抗冲击性能及消能性能。试验还设置了三组对照组,对比了不同质量落锤、相同初始势能的荷载工况下FRP板的最大挠度及最大应变。
Fiber composite materials (FRP) have great potential in the field of bridge structures and hydraulic structures. It is necessary to study their dynamic performance. Through a series of concentrated load impact tests on simply supported FRP hollow slabs on both sides, the impact resistance and the dynamic response of FRP slabs are verified. The response modes of displacement, strain and acceleration at different points of FRP plate under the impact of different impact potentials were analyzed, including the time-history analysis and the maximum analysis. The peak distribution of acceleration in the test plate and the maximum deflection And the maximum strain with the impact potential energy trends. The results show that: FRP hollow slab has good impact resistance and energy dissipation. Three groups of control groups were also set up to compare the maximum deflection and maximum strain of FRP plates with different mass drops and loads with the same initial potential.