侧向撞击荷载下FRP管-混凝土-钢管组合梁抗撞性能的理论分析模型
发布时间：2019-03-20 12:07
【摘要】：基于ABAQUS有限元软件为平台建立了FRP管-混凝土-钢管组合结构在低速侧向撞击荷载下的有限元计算模型,该模型计算结果与现有试验结果对比后吻合良好,能够较好地模拟FRP管-混凝土-钢管组合结构在侧向撞击作用下的性能。同时利用该模型进行了有限元参数分析,通过改变冲击能量和空心率来分析它们各自对该组合结构撞击性能的影响。得出的结论是冲击能量对该组合结构跨中极限挠度影响显著,但冲击力平台值却几乎不变;空心率对该组合结构抗撞击性能影响较大,尤其是当空心率在0.6~0.8范围内时组合结构展现出良好的抗撞击性能,且当空心率χ=0.7时,FRP管-混凝土-钢管组合结构表现出的抗冲击力学性能最好。这些研究对进一步开展FRP管-混凝土-钢管组合结构的抗撞击性能研究提供了一定的参考依据。
[Abstract]:Based on ABAQUS finite element software, the finite element calculation model of FRP pipe-concrete-steel pipe composite structure under low-speed lateral impact is established. The calculated results of the model are in good agreement with the existing experimental results. It can simulate the performance of FRP pipe-concrete-steel pipe composite structure under lateral impact. At the same time, the finite element parameter analysis is carried out by using the model. By changing the impact energy and the empty heart rate, the impact performance of the composite structure is analyzed by changing the impact energy and the empty heart rate. The conclusion is that the impact energy has a significant effect on the mid-span limit deflection of the composite structure, but the impact force platform value is almost unchanged. The space heart rate has a great effect on the impact resistance of the composite structure, especially when the air heart rate is in the range of 0.6 渭 0.8, the composite structure shows a good anti-impact performance, and when the air heart rate is 蠂 = 0.7, the impact resistance of the composite structure is better than that of the composite structure. FRP pipe-concrete-steel pipe composite structure shows the best impact mechanical properties. These studies provide some reference for further research on impact resistance of FRP pipe-concrete-steel pipe composite structure.
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本文编号：2444200
[Abstract]:Based on ABAQUS finite element software, the finite element calculation model of FRP pipe-concrete-steel pipe composite structure under low-speed lateral impact is established. The calculated results of the model are in good agreement with the existing experimental results. It can simulate the performance of FRP pipe-concrete-steel pipe composite structure under lateral impact. At the same time, the finite element parameter analysis is carried out by using the model. By changing the impact energy and the empty heart rate, the impact performance of the composite structure is analyzed by changing the impact energy and the empty heart rate. The conclusion is that the impact energy has a significant effect on the mid-span limit deflection of the composite structure, but the impact force platform value is almost unchanged. The space heart rate has a great effect on the impact resistance of the composite structure, especially when the air heart rate is in the range of 0.6 渭 0.8, the composite structure shows a good anti-impact performance, and when the air heart rate is 蠂 = 0.7, the impact resistance of the composite structure is better than that of the composite structure. FRP pipe-concrete-steel pipe composite structure shows the best impact mechanical properties. These studies provide some reference for further research on impact resistance of FRP pipe-concrete-steel pipe composite structure.
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本文编号：2444200
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