中文核心期刊
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中国科技核心期刊
RCCSE中国核心学术期刊
Journal of Chongqing Jiaotong University(Natural Science)

Journal of Chongqing Jiaotong University(Natural Science) ›› 2009, Vol. 28 ›› Issue (4): 664-667.DOI: 10.3969/j.issn.1674-0696.2009.04.06

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Reinforcement?Technology?of?Transforming?Rectangular?Rib?Arch?Bridge?into?Box?Rib?Arch?Bridge

SHi Fei1, ZHOU Jianting2, MO Xijing2, ZHU Xiaolong3, WU Diankun2   

  1. 1.?Chongqing?Communication?Construction?Group,?Chongqing?401147,?China?;?2.?Chongqing?Jiaotong?University,?Chongqing?400074,?China;?3.?Chongqing?Survey?Institute,?Chongqing?400020,?China
  • Received:2009-01-19 Revised:2009-03-12 Online:2009-08-15 Published:2015-04-15

肋拱桥关键截面箱型转换加固技术试验研究

石飞1,周建庭2,莫喜晶2,祝小龙3,武电坤2   

  1. 1.重庆交通建设集团有限责任公司,重庆401147;2.重庆交通大学,重庆400074;3.重庆市勘测院,重庆400020
  • 作者简介:石飞(1971—),男,安徽舒城人,高级工程师,硕士研究生,主要从事公路工程建设管理、施工管理、施工技术研究等。E-mail:shifei_cy@163.com。
  • 基金资助:
    重庆市杰出青年项目( CSTC, 2008BA6038) ; 交通部西部交通建设科技项目( 200631822349)

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Abstract: Taking?Chongqing?Fengdu?Miaobao?Bridge?as?the?antitype,?two?reinforced?concrete?rib?arch?models?are?established.?The?reinforcement?technology?of?transforming?rectangular?rib?arch?bridge?into?box?rib?arch?bridge?is?applied?to?reinforce?one?of?the?models,?and?then?destructive?tests?are?carried?out?on?the?pre-reinforced?model?and?post-reinforced?model.?Through?the?com-?parison?analysis?on?the?conditions?of?the?strain,?deflection,?lateral?load?distribution?ratio,?crack,?failure?mode?and?other?indicators?before?and?after?the?hreinforcement,?the?conclusion?is?drawn?that?the?new?reinforced?concrete?box?can?coordinate?with?the?deformation?with?the?original?rib?and?have?a?common?commitment?to?the?live?load.

Key words: strengthening , rib arch bridge , section changing , bearing capacity , testing ;

摘要： 以重庆丰都庙包大桥为原型,制作了2片钢筋混凝土肋拱模型,首先采用??肋拱桥关键截面箱型转换加固技 术对其中1片进行加固处治,然后对加固前、后肋拱模型实施全过程破坏试验。通过对比分析加固前、后肋拱模 型的应变、挠度、横向分布比率、裂缝及破坏模式等指标,得到以下结论:肋拱桥关键截面箱型转换加固后,新增设 的钢筋混凝土箱型封闭层能与原肋拱协调变形、共同承担活载。

关键词: 加固, 肋拱桥, 截面转换, 承载力, 试验

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