FRP钢管混凝土构件抗冲击性能仿真分析

陈忱 赵颖华

振动与冲击 ›› 2013, Vol. 32 ›› Issue (19) : 197-201.

PDF(1272 KB)
PDF(1272 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (19) : 197-201.
论文

FRP钢管混凝土构件抗冲击性能仿真分析

  • 陈忱 赵颖华
作者信息 +

Numerical Study on The Impact Performance of Concrete Filled FRP-Steel Tubes

  • CHEN Chen ZHAO Yinghua
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文章历史 +

摘要

FRP-钢管混凝土结构是一种新型复合结构形式,该结构由在外壁为FRP(CFRP/GFRP,碳/玻璃纤维增强树脂)材料、内壁为钢材的复合圆管内浇筑混凝土而形成。本文应用有限元方法分析FRP钢管混凝土构件的抗冲击性能,通过变化FRP种类、包裹层数、包裹形式以及钢管的厚度考查不同冲击力下的结构响应,得出冲击力和变形的时程曲线。研究发现利用FRP加固的方法有效地提高了钢管混凝土构件的抗冲击刚度,其增强效果与FRP种类以及FRP的包裹方式和厚度相关,其中以纵向包裹CFRP的试件挠度为最小。为验证数值模拟方法和策略的正确性,对已有钢管混凝土的冲击实验案例进行仿真模拟,模拟结果与实验结果对比良好。

Abstract

The concrete filled FRP-steel tube is a composite structure made by filling concrete into steel tube and wrapping outside with fiber reinforced polymer (FRP) sheet. Finite element method has been conducted to study the dynamic responses of concrete filled FRP-steel tubes under varied impact-loading styles, considering the influences of kinds of FRP, the orientation of FRP sheets and the thickness of both FRP and steel tubes. The force and displacement histories have been recorded and analysed. The numerical results show that the application of FRP remarkably improved the anti-impact property of the structures especially for longitudinal oriented CFRP. The simulation strategy is proved by comparing numerical data with experimental results of concrete filled steel structures.


关键词

冲击力 / FRP / 数值模拟 / 复合结构

Key words

Impact force / FRP / Numerical simulation / Composite structure

引用本文

导出引用
陈忱 赵颖华. FRP钢管混凝土构件抗冲击性能仿真分析[J]. 振动与冲击, 2013, 32(19): 197-201
CHEN Chen ZHAO Yinghua. Numerical Study on The Impact Performance of Concrete Filled FRP-Steel Tubes[J]. Journal of Vibration and Shock, 2013, 32(19): 197-201

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