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人民珠江 ›› 2021, Vol. 42 ›› Issue (12): 118-122,142.doi: 10.3969/j.issn.1001-9235.2021.12.016

• 工程技术 • 上一篇    下一篇

基于Ansys的碳纤维布加固框架梁的静动力特性分析

於文欢1, 糜凯华1, 赵萍2   

  1. 1.中水珠江规划勘测设计有限公司,广东 广州 510610;
    2.淮北师范大学,安徽 淮北 235000
  • 收稿日期:2021-05-21 出版日期:2021-12-25 发布日期:2021-12-28
  • 作者简介:於文欢,男,主要从事结构、岩土工程设计及有限元模拟等工作。E-mail:378028860@qq.com
  • 基金资助:
    国家自然科学基金(51169009)

Static and Dynamic Characteristics Analysis on Frame Beam Reinforced with Carbon Fiber Reinforced Plastic Based on ANSYS

YU Wenhuan1, MI Kaihua1, ZHAO Ping2   

  1. 1. China Water Resources Pearl River Planning,Surveying&Designing Co.,Ltd.,Guangzhou 510610,China;
    2. Huaibei Normal University,Huaibei 235000,China
  • Received:2021-05-21 Online:2021-12-25 Published:2021-12-28

摘要: 采用Ansys有限元计算软件,以某框架梁为例,建立其有限元的三维模型,分别对框架梁在未加固的裸梁、普通碳纤维加固以及预应力碳纤维加固情况下进行了静力分析、模态分析以及时程分析,从而研究了纤维布加固框架梁的动静力特性。研究表明:碳纤维加固可以大幅提高框架梁的极限承载力,但是会相应地降低框架梁的延性;预应力碳纤维加固对框架梁的自振频率影响较大,大幅提高了框架梁的刚度;普通碳纤维加固几乎不能提高框架梁的抗震性能,而预应力碳纤维加固则可以大幅提高框架梁的水平抗震性能,在设计时要遵循“强柱弱梁”的抗震准则。

关键词: Ansys, 碳纤维, 预应力, 框架梁, 动力响应, 有限元分析

Abstract: To study the static and dynamic characteristics on frame beam reinforced with carbon fiber reinforced plastic,a frame beam for example,the three-dimensional finite element model was established by the FEM soft-ware ANSYS,when the frame beam in unreinforced,ordinary carbon fiber reinforced and prestressed carbon fiber reinforced has respectively carried on the static analysis,modal analysis and time history analysis.Research showed that carbon fiber reinforced plastics could significantly improve the ultimate bearing capacity of the frame beam,but could be reduced to a corresponding the ductility of the frame beam;prestressed carbon fiber reinforced had great effects on the natural frequency of vibration of frame beam and greatly improved the rigidity of frame beam;ordinary carbon fiber reinforcement could hardly improve the seismic performance of frame beam,whereas the prestressed carbon fiber reinforced plastics could significantly improve the level of frame beam of horizontal seismic performance,the seismic design criterion of “strong column and weak beam” should be followed in design.

Key words: Ansys, carbon fiber, prestressed, frame beam, dynamic response, finite element analysis

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