| 连续刚构桥跨中置换混凝土加固技术研究 |
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| 引用本文： | 秦绪勇,刘定波,熊茜.连续刚构桥跨中置换混凝土加固技术研究[J].重庆交通大学学报(自然科学版),2008,27(6):1031-1033. |
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| 作者姓名： | 秦绪勇 刘定波 熊茜 |
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| 作者单位： | 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 |
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| 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。
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| 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 |
Research on the Strengthening Technology of Replacing Concrete in Mid-span of the Continuous Rigid Frame Bridge |
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| QIN Xu-yong,LIU Ding-bo,XIONG Qian.Research on the Strengthening Technology of Replacing Concrete in Mid-span of the Continuous Rigid Frame Bridge[J].Journal of Chongqing Jiaotong University,2008,27(6):1031-1033. |
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| Authors: | QIN Xu-yong LIU Ding-bo XIONG Qian |
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| Institution: | QIN Xu-yong1,LIU Ding-bo1,XIONG Qian2(1.Chengdu Fangzhou Construction Project Management Co.Ltd,Sichuan Chengdu 610031,China,2.Third Design & Research Institute of Chongqing Mechanic Industry,Chongqing 400039,China) |
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| 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 a... |
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| Keywords: | 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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