复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (4): 75-82.DOI: 10.19936/j.cnki.2096-8000.20210428.011

• 应用研究 • 上一篇    下一篇

基于CFRP的柔性装配式圬工拱桥结构承载及装配过程的有限元分析

温宇立1,2, 潘美萍2, 夏立鹏2, 郑愚2*   

  1. 1.广东海洋大学 机械与动力工程学院,湛江524088;
    2.东莞理工学院 生态环境与建筑工程学院,东莞523808
  • 收稿日期:2020-07-21 出版日期:2021-04-28 发布日期:2021-04-30
  • 通讯作者: 郑愚(1978-),男,博士,教授,主要从事新型材料结构方面的研究,zhengy@dgut.edu.cn。
  • 作者简介:温宇立(1992-),男,硕士,助教,主要从事有限元分析方面的研究。
  • 基金资助:
    国家自然科学基金面上项目(51678149);广东省普通高校基础研究与应用基础研究重点项目(2018KZDXM068)

THE NUMERICAL ANALYSIS OF LOADED AND CONSTRUCTION PROCESS OF A FLEXIBLE PREFABRICATED MASONRY ARCH BRIDGE BASED ON CFRP

WEN Yu-li1,2, PAN Mei-ping2, XIA Li-peng2, ZHENG Yu2*   

  1. 1. School of Mechanical and Power Engineering, Guangdong Ocean University, Zhanjiang 524088, China;
    2. School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
  • Received:2020-07-21 Online:2021-04-28 Published:2021-04-30

摘要: 基于FRP材料抗拉强度高、耐久性好的特点,本文对1种基于CFRP的新型柔性装配式圬工拱桥结构的力学性能进行分析,该结构体系在拥有传统圬工拱桥结构承载力高、耐久性好等特点的基础上,可解决施工难度高和危险性高的问题,具有广阔的应用前景。为研究装配式圬工拱桥结构的力学性能,基于ABAQUS有限元分析软件模拟装配式圬工拱桥的施工起吊过程及承载。通过对比装配式圬工拱桥承载时的试验结果,验证了此装配式圬工拱桥有限元模型的准确性,并根据结构各构件的受力情况分析了此柔性装配式圬工拱桥结构的破坏机理,数值模拟结果表明此装配式圬工拱桥结构具有较高的承载力且1/3跨是结构的最不利荷载作用点。此外,分析了不同起吊方案下装配式圬工拱桥的应力分布以及成拱后拱轴线的变化情况,结果表明CFRP材料作为结构连接件能够有效增强拱桥的整体稳定性,不同的起吊位置对于预制装配式圬工拱桥的应力分布以及变形有着较大的影响,施工方案7的整体应力应变分布满足结构安全要求、成拱后轴线流畅、拱圈稳定,对该类结构的设计以及施工控制提供了依据。

关键词: 圬工拱桥, 碳纤维增强复合材料, 预制拱块, 有限元分析, 装配式

Abstract: With the characteristics of fiber reinforced plastic (FRP) of high tensile strength and durability, a flexible prefabricated arch bridge system based on CFRP was developed, which is not only good at load and durability, but less construction difficulty and dangerous than traditional masonry arch bridge. For discussing the feasibility of prefabricated masonry arch bridge, the processes of loading and construction of the arch bridge were modelled via ABAQUS. The FEA model of arch bridge was verified and its failure mechanism was analyzed by comparing the result of numerical simulation and experiments. The results of FEA showed that flexible prefabricated arch bridge possessed great loading-carrying capacity and third span is the most unfavorable loading location. Furthermore, the numerical results of stress distribution of CFRP and axis deformation of flexible prefabricated arch system in different lifting programs showed that CFRP can reinforce the stability of arch bridge obviously and assembly performance is severely optimized by the No.7 lifting programs, providing a reference for the design and construction control of this kinds of flexible arch bridge.

Key words: masonry arch bridge, CFRP, prefabricated voussoirs, finite element analysis, prefabricated

中图分类号: