玻璃钢/复合材料 ›› 2009, Vol. 209 ›› Issue (1): 68-72.

• 产品 工艺 • 上一篇    下一篇

FRP型材拼装箱梁的受力性能研究

  

  1. (同济大学建筑工程系,上海200092)
  • 出版日期:2009-01-28 发布日期:2009-01-25
  • 作者简介:葛畅(1983-),男,硕士。
  • 基金资助:

    交通部西部交通建设科技项目(200631882244)

FLEXURAL BEHAVIOR OF FRP PROFILE ASSEMBLED BOX BEAM

  • Online:2009-01-28 Published:2009-01-25

摘要:

FRP型材拼装箱梁是由FRP拉挤型材空心板通过三向连接件、骨状挂钩等销接构件拼装而成的箱梁,具有重量轻、耐腐蚀性能好、施工速度快等突出优点,适用于小跨径公路桥及人行桥。本文采用层合材料壳体单元建立了FRP型材拼装箱梁的有限元模型,对单调静力荷载下箱梁的变形和应力等受力性能进行了研究,并与试验结果进行了对比。在此基础上,开展了11片箱梁的有限元参数分析,重点考察了FRP纤维铺层、箱梁顶、底板宽度以及型材板高度等因素对箱梁跨中挠度和应力的影响。研究表明,FRP型材拼装箱的截面尺寸主要由刚度控制,箱梁具有较大的强度储备;箱梁的顶、底板宽度、型材板壁厚和纵隔板、壁板高度等因素对箱梁的刚度或应力的影响较大,而纤维铺层对箱梁结构刚度的影响较小。

关键词: FRP拉挤型材, 拼装箱梁, 有限元分析, 受力性能

Abstract:

The FRP profile assembled box beam is a box beam composed of pultruded cellular profiles that interlocking connected with other profiles through square tubes and togglebars. The FRP profile assembled box beam is a light, corrosionproof structural member and can be quickly fabricated and applied in short span highway bridges or pedestrian bridges. In this paper, a linear constitutive shell FE model was created and validated by existing laboratory testing to discuss the monotonic flexural behavior of the box beams. Moreover, parametric analysis was con

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