Vibration Behavior of Large Span Structures having Fiber Reinforced Polymer Shapes

具有纤维增强聚合物形状的大跨度结构的振动行为

• 批准号: 13650627
• 负责人: YAMADA Seishi
• 金额: $ 1.54万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650627/
• 关键词: Fiber reinforced polymer; Large span structure; Vibration behavior

The present study has the potential purpose of the application of pultruded fiber reinforced polymer (FRP) shapes to various kinds of large span roof structures, therefore, the rigid jointed single layer latticed cylindrical roof structures have been treated here. First of all, the experimental identification of the stiffness components of the FRP shapes and the linear stress analysis using finite beam elements have been carried out ; the displacement are shown not to increase in proportion to the material consistencies in respect to the steel structures. Second, the undamped free vibration analysis was performed, and it has been shown that the eigen frequencies and modes are varied not with the stiffness but the whole structural dimension. Third, the seismic response analysis was carried out, and it has been suggested that the stress level of longitudinal direction members is very low, however, the diagonal direction members suffer from the relatively large stress through dynamic earthquake response vibration. Finally, it would be shown that the vibration mode, stress distribution, moment resultants, dynamic stress behavior of the FRP large span structures are very similar to those which consist of steel members.

本研究具有将拉挤纤维增强聚合物（FRP）形状应用于各种大跨度屋面结构的潜在目的，因此，本文对刚性节理单层网格圆柱屋面结构进行了处理。首先，进行了FRP型钢刚度成分的试验识别和有限梁单元线性应力分析；对于钢结构而言，位移不随材料浓度的增加而增加。其次，进行了无阻尼自由振动分析，结果表明，本征频率和振型不随刚度而变化，而是随结构整体尺寸而变化。第三，进行了地震反应分析，认为纵向构件的应力水平很低，而对角线向构件通过动力地震反应振动承受较大的应力。结果表明，FRP大跨度结构的振动模态、应力分布、弯矩和动应力性能与钢构件结构非常相似。