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

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (6) : 246-251.

论文

邹淼1 王蕊2

作者信息 +

Theoretical model for the anti collision performance analysis of FRP tube concrete composite beams under lateral impact load

ZOU Miao,WANG Rui

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文章历史 +

摘要

本文基于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

A finite element model for analysing the impact resistance performance of FRP tube-concrete-steel composite structures under low velocity lateral impact load was established by using the ABAQUS finite element software.The results are in good agreement with the existing experimental results,which indicates the model is approprite.Using the model,a finite element parametric analysis was carried out by changing the impact energy and the hollow ratio respectively.It is concluded that the impact energy has significant effect on the ultimate deflection of composite structures,while the platform value of impact force maintains almost unchanged.The hollow ratio has great influence on the impact resistance of structures as well,especially when the hollow ratio is within the range of 0.6 to 0.8 ,the structure exhibits good impact resistance,and when the hollow ratio χ =0.7,FRP tube-concrete-steel composite structures appear the best mechanical property of impact resistance.The results provide a reference to the further development of the anti impact performance of FRP tube-concrete-steel composite structures.

导出引用

邹淼1 王蕊2 . 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[J]. 振动与冲击, 2017, 36(6): 246-251

ZOU Miao,WANG Rui. Theoretical model for the anti collision performance analysis of FRP tube concrete composite beams under lateral impact load[J]. Journal of Vibration and Shock, 2017, 36(6): 246-251

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