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

Journal of Chongqing Jiaotong University(Natural Science) ›› 2018, Vol. 37 ›› Issue (07): 9-13.DOI: 10.3969/j.issn.1674-0696.2018.07.02

• Bridge & Tunnel Engineering • Previous Articles     Next Articles

Study on Construction Mechanical Properties of Cantilever-Pouring Concrete Arch Bridge

ZHOU Qian1,2,ZHOU Shuixing1,LI Xiaoqing1,FENG Yushi2   

  1. (1. School of Civil Engineering & Construction, Chongqing Jiaotong University, Chongqing 400074, P. R. China; 2. Department of Civil Engineering, Chongqing Nengyuan University, Chongqing 402260, P. R. China)
  • Received:2017-08-20 Revised:2017-11-05 Online:2018-07-09 Published:2018-07-09

混凝土拱桥悬臂浇筑施工力学性能研究

周倩1,2,周水兴1,李晓庆1,冯雨实2   

  1. (1. 重庆交通大学 土木工程学院,重庆400074; 2. 重庆能源职业学院 土木工程系,重庆 402260)
  • 作者简介:周倩(1987—),女,重庆长寿人,博士生,主要从事大跨径桥梁方面的研究。E-mail:673413658@qq.com。
  • 基金资助:
    国家重点研发计划(2017YFC0806007);贵州省交通运输厅科技项目(2015-122-052;2014-121-033);国家杰出青年科学基金项目 (51425801);云南省科技计划项目(2017IB025);重庆市基础科学与前沿技术研究专项项目(cstc2017jcyjAX0463)

Abstract: In order to control construction stress and deformation of Cantilever-Pouring Concrete Arch Bridge, the finite element program ANSYS was used to research construction mechanical properties of Cantilever-Pouring Concrete Arch Bridge, mainly analyzing the effect segment length, form of hanging blue structure, and pre-stress and cable anchor position. the results show: segment length and cable anchor position control tensile stress setting pre-stress can effectively reduce stress, but the influence on deformation is not obvious; hanging blue form structure can both control stress and deformation to improve construction stress and deformation, it better to choose front pivot hanging basket construct.

Key words: bridge engineering, concrete arch bridge, cantilever-pouring segment length, structure of hanging basket, pre-stress

摘要: 为控制悬臂浇筑混凝土拱桥施工内力及变形,运用大型有限元分析软件ANSYS自带的零阶优化法,基于扣索一次张拉法开展混凝土拱桥悬浇 施工力学性能研究,主要分析了悬浇长度、挂蓝构造形式、预应力、扣索锚固位置对拱圈施工内力及变形影响。结果表明:改变节段长度和扣索 锚固位置对拱圈施工内力影响不大,在拱圈顶板设置预应力能有效减小施工内力,但对施工变形影响不大,挂篮构造形式对主拱圈施工内力及变 形影响均较大,悬臂浇筑钢筋混凝土拱桥建议采用前支点挂篮施工。

关键词: 桥梁工程, 混凝土拱桥, 悬臂浇筑, 分段长度, 挂篮构造, 预应力

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