中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2019, Vol. 38 ›› Issue (11): 34-40.DOI: 10.3969/j.issn.1674-0696.2019.11.06

• 桥梁与隧道工程 • 上一篇    下一篇

新型小箱梁铰缝损伤前后荷载横向分布规律研究

周建庭,张华彬,陈磊,张媛媛   

  1. (重庆交通大学 土木工程学院,重庆,400074)
  • 收稿日期:2019-05-17 修回日期:2019-09-17 出版日期:2019-11-21 发布日期:2019-11-21
  • 作者简介:周建庭(1972—),男,浙江金华人,教授,主要从事桥梁检测加固、结构损伤与健康监测方面的研究。 E-mail: jtzhou@cqjtu.edu.cn。
  • 基金资助:
    国家重点研发计划项目(2017YFC0806007);国家杰出青年科学基金计划项目(51425801);重庆市技术创新与应用示范项目(社会民生类重点研发)(cstc2018jscx-mszdX0084)

Study on Load Transverse Distribution Rule of New Small Box Girder before and after Hinge Joint Damage

ZHOU Jianting, ZHANG Huabin, CHEN Lei, ZHANG Yuanyuan   

  1. (School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R. China)
  • Received:2019-05-17 Revised:2019-09-17 Online:2019-11-21 Published:2019-11-21

摘要: 对现有预制装配式小箱梁桥横向整体受力问题,提出了一种新型的横隔板构造形式,采用大比例模型试验的方法对比研究了新型横隔板构造和传统横隔板构造对小箱梁桥传力和荷载分配方式的影响,然后采用三维实体有限元数值仿真技术全面探讨了小箱梁的受力性能与传力方式,并与试验结果进行了比对验证。结果表明:铰缝损伤对小箱梁桥的荷载横向分布有较大的影响;新型横隔板构造在3条铰缝均出现损伤后,仍然保持着和传统横隔板构造比较接近的应力分布;新型横隔板构造不仅可以提供更高的横向刚度,而且比传统横隔板构造对铰缝病害后果具有更强的抵抗性。

关键词: 桥梁工程, 小箱梁, 横向分布, 结构损伤

Abstract: A new type of transverse diaphragm structure was proposed for the existing prefabricated small box girder bridge. The influence of the new diaphragm structure and the traditional diaphragm structure on the force transmission and load distribution of the small box girder bridge was studied by large-scale model test. And then the mechanical performance and force transmission mode of the small box girder were comprehensively discussed by using the three-dimensional solid finite element numerical simulation technology, and the results were compared with the test results. The results show that the hinge joint damage has a great influence on the lateral distribution of the load of the small box girder bridge. The stress distribution of the new diaphragm structure is still close to that of the traditional diaphragm structure after all three hinge joints are damaged. The new diaphragm construction can not only provide higher lateral stiffness, but also has stronger resistance to the consequence of hinge joint disease than the traditional diaphragm structure.

Key words: bridge engineering, small box girder, transverse distribution, structure damages

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