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) ›› 2017, Vol. 36 ›› Issue (1): 1-8.DOI: 10.3969/j.issn.1674-0696.2017.01.01

• 桥梁与隧道工程 •    下一篇

三塔斜拉-自锚式悬索协作体系模型桥温度效应分析

蔡军哲1,司龙2   

  1. (1.西安公路研究院,陕西西安710065;2.陕西省长安区农村公路管理站,陕西西安710100)
  • 收稿日期:2015-12-28 修回日期:2016-04-27 出版日期:2017-01-20 发布日期:2017-02-08
  • 作者简介:第一作者:蔡军哲(1982—),男,陕西宝鸡人,工程师,主要从事桥梁结构理论分析方面的研究。E-mail:153068642@qq.com。

Analysis of Temperature Effect on Cable-Stayed Self-Anchored Suspension Composed Model Bridge with Three Towers

CAI Junzhe1,SI Long2   

  1. (1. Xi'an Highway Research Institute, Xi'an 710065, Shaanxi, P.R.China;2.Chang'an Erea County Road Management Station, Xi'an 710100, Shaanxi, P.R.China)
  • Received:2015-12-28 Revised:2016-04-27 Online:2017-01-20 Published:2017-02-08

摘要: 为研究三塔斜拉-自锚式悬索协作体系桥温度效应下的受力机理和工作性能,以某在建桥梁为依托工程,制作了1∶20缩尺试验模型,研究了桥梁整体温差、索梁温差、桥塔日照和桥面日照等4种工况下桥梁结构的变形响应及索力变化规律。结果表明:在这4种工况下,相邻吊索索力变化呈现正负跳跃的特点,影响索力的均匀性;索梁温差对主梁位移影响最大,对短索索力影响也较大;分缆索力变化值均较小。

关键词: 桥梁工程, 斜拉-自锚式悬索协作体系桥, 模型试验, 温度效应

Abstract: In order to study the mechanical performance of the cable-stayed self-anchored suspension composed bridge with three towers under temperature effect, a model bridge with 1∶20 reduced scale was made, and it's deformation performances were studied under four conditions, which were uniform temperature change, temperature difference between cables and girder, sunshine temperature difference on tower and sunshine temperature difference on girder. The results show that there are the same change trends of adjacent hanger tension in suspension section, one hanger tension increase and another descend, which has greatly influenced the uniform distribution of hanger tension. Under the condition of temperature difference between stayed cables and girder, the degree of the girder deformation changes and of the tensions changes of short stayed cable are probably significant.

Key words: bridge engineering, cable-stayed self-anchored suspension composed bridge, model test, temperature effect

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