高速铁路CRTSⅡ型板式无砟轨道桥梁基础沉降顶升修复试验研究
发布时间：2019-03-07 19:44
【摘要】：安全是铁路永恒不变的主题,特别是高速铁路,由于运行速度快等特点,对线路条件要求极高。但当今铁路桥梁桥墩差异沉降的问题严重地影响了高速铁路的行车安全,是亟需解决的重要技术问题之一。本论文依托京津城际CRTSⅡ型无砟轨道铁路桥梁沉降修复工程,通过对桥梁及桥上无砟轨道结构进行理论、实践相结合的研究分析,验证了铁路桥梁沉降后顶升修复的可行性和必要性,为以后沉降桥梁顶升修复工作奠定了一定的基础。所做的主要工作如下:(1)在查阅大量国内外文献资料的基础上,总结了国内外铁路桥梁、无砟轨道结构以及桥梁沉降方面的基本概况,介绍了桥梁顶升研究现状。(2)运用有限元软件ANSYS进行了桥梁及无砟轨道结构的模拟计算分析,得出在不同梁型及不同顶升工况的前提下,铁路桥梁无砟轨道系统顶升施工时的应力分布情况和最不利施工位置。(3)在桥梁沉降修复施工过程中进行实时监测,并在施工结束后对监测数据进行整理、分析和总结,得出桥梁在实际顶升修复过程中结构的受力变化情况,与数值模拟分析结果做对比分析。(4)对铁路桥梁沉降进行长期监测,通过数据分析得出桥梁的沉降情况,整理归纳出沉降现状,为之后顶升施工提供参考和依据。
[Abstract]:Safety is the constant theme of railway, especially the high-speed railway, because of its fast running speed and so on, it requires extremely high line conditions. However, the problem of differential settlement of railway bridge piers seriously affects the running safety of high-speed railway, and it is one of the important technical problems urgently to be solved. This paper relies on the Beijing-Tianjin intercity CRTSII ballastless track bridge settlement repair project, through the bridge and the ballastless track structure on the bridge theory, the practice of the combination of research and analysis, The feasibility and necessity of lifting repair of railway bridge after settlement has been verified, which has laid a certain foundation for the future work of lifting repair of railway bridge. The main work done is as follows: (1) on the basis of consulting a large number of domestic and foreign literature, the basic situation of domestic and foreign railway bridges, ballastless track structures and bridge settlement is summarized. The research status of bridge jacking is introduced. (2) the simulation calculation and analysis of bridge and ballastless track structure are carried out by using finite element software ANSYS, and it is concluded that under the premise of different beam types and different lifting conditions, the structure of bridge and ballastless track is simulated and analyzed. The stress distribution and the most unfavorable construction position of the ballastless track system of railway bridge during the lifting construction. (3) Real-time monitoring in the process of bridge settlement repair construction, and the arrangement, analysis and summary of the monitoring data after the completion of the construction. The stress variation of the bridge in the process of actual lifting repair is obtained and compared with the results of numerical simulation analysis. (4) the long-term monitoring of railway bridge settlement is carried out, and the settlement of the bridge is obtained through data analysis. In order to provide reference and basis for subsequent lifting construction, the settlement situation is summarized.
【学位授予单位】：中国铁道科学研究院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U443.1;U213.244
本文编号：2436402
[Abstract]:Safety is the constant theme of railway, especially the high-speed railway, because of its fast running speed and so on, it requires extremely high line conditions. However, the problem of differential settlement of railway bridge piers seriously affects the running safety of high-speed railway, and it is one of the important technical problems urgently to be solved. This paper relies on the Beijing-Tianjin intercity CRTSII ballastless track bridge settlement repair project, through the bridge and the ballastless track structure on the bridge theory, the practice of the combination of research and analysis, The feasibility and necessity of lifting repair of railway bridge after settlement has been verified, which has laid a certain foundation for the future work of lifting repair of railway bridge. The main work done is as follows: (1) on the basis of consulting a large number of domestic and foreign literature, the basic situation of domestic and foreign railway bridges, ballastless track structures and bridge settlement is summarized. The research status of bridge jacking is introduced. (2) the simulation calculation and analysis of bridge and ballastless track structure are carried out by using finite element software ANSYS, and it is concluded that under the premise of different beam types and different lifting conditions, the structure of bridge and ballastless track is simulated and analyzed. The stress distribution and the most unfavorable construction position of the ballastless track system of railway bridge during the lifting construction. (3) Real-time monitoring in the process of bridge settlement repair construction, and the arrangement, analysis and summary of the monitoring data after the completion of the construction. The stress variation of the bridge in the process of actual lifting repair is obtained and compared with the results of numerical simulation analysis. (4) the long-term monitoring of railway bridge settlement is carried out, and the settlement of the bridge is obtained through data analysis. In order to provide reference and basis for subsequent lifting construction, the settlement situation is summarized.
【学位授予单位】：中国铁道科学研究院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U443.1;U213.244
【参考文献】
相关硕士学位论文 前1条
1 安彦坤;桥梁沉降对岔区无砟轨道结构力学特性的影响研究[D];北京交通大学;2012年
，本文编号：2436402
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