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) ›› 2008, Vol. 27 ›› Issue (6): 1031-1033.

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连续刚构桥跨中置换混凝土加固技术研究

秦绪勇1, 刘定波1, 熊茜2   

  1. 1. 成都方舟建设工程项目管理有限公司, 四川 成都 610031;
    2. 重庆机械工业第三设计研究院, 重庆 400039
  • 收稿日期:2008-04-21 修回日期:2008-06-23 出版日期:2008-12-20 发布日期:2016-11-07
  • 作者简介:秦绪勇(1981-),男,江苏连云港人,工程师,从事桥梁监控、设计、检测与加固工作。E-mail:qinxuyongxy@126.com;Tel:15928045767。

Research on the Strengthening Technology of Replacing Concrete in Mid-span of the Continuous Rigid Frame Bridge

QIN Xu-yong1, LIU Ding-bo1, XIONG Qian2   

  1. 1. Chengdu Fangzhou Construction Project Management Co. Ltd, Sichuan Chengdu 610031, China;
    2. Third Design & Research Institute of Chongqing Mechanic Industry, Chongqing 400039, China
  • Received:2008-04-21 Revised:2008-06-23 Online:2008-12-20 Published:2016-11-07

摘要: 针对连续刚构桥跨中合龙段混凝土出现分层起壳现象的罕见病害,通过对全桥结构分析计算和对中跨跨中的局部结构分析计算,提出了跨中置换混凝土并施加体外预应力的创造性加固方法;并介绍了适应该加固法的高压水射流凿除混凝土的施工工艺,通过对施工和荷载试验全程跟踪监控得出的数据,说明该加固法的良好加固效果和简易的可操作性。为出现类似病害的桥梁提供了一种具有普遍推广性的加固方法,为高压水射流先进施工工艺的推广提供了宝贵的经验。

关键词: 连续刚构桥, 置换混凝土加固法, 分层, 体外预应力, 高压水射流

Abstract: The closure section concrete has lamination phenomenon in mid-span of the continuous rigid frame bridge.Aiming at this rare disease,through the calculation and analysis of the entire bridge structure and the mid-span cross partial structure,the creative reinforcement method of replacing concrete with externally applied pretressing is proposed;the advanced construction technology of eliminating concrete by high-pressured water jet chisel is also introduced.Furthermore,through analyzing the data obtained by all-the-way tracking monitoring the construction and the load experiments,it is showed that the strengthening technology is effective and feasible in construction.This strengthening technology offers a universal method to the bridges which occur similar disease,and it also offers precious experience to the popularization of the advanced construction technology of high-pressured water jet chisel.

Key words: continuous rigid frame bridge, the strengthening technology of replacing concrete, the lamination phenomenon, externally applied pretressing, high-pressured water jet chisel

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