湖沿特大桥单T构转体施工监控技术研究

发布时间：2018-03-23 22:07

本文选题：单T构　切入点：水平转体　出处：《石家庄铁道大学》2014年硕士论文

【摘要】：桥梁转体施工是指将桥梁结构在非设计轴线位置制作(浇注或拼接)成形后，通过转体就位的一种施工方法。单T构桥采用转体施工，可以加快施工速度，节约成本，提高了安全性，减少了对既有线路运营的影响，近年来备受人们青睐。本论文以杭州至长沙(沪昆)铁路客运专线——江西省上饶市玉山县湖沿特大桥(64+64) m单T构水平转体施工监控项目为背景，简单介绍了桥梁转体施工技术的发展、研究现状和桥梁转体施工控制的目的和意义。主要对无合龙段的单T构桥的转体施工技术将进行研究，包括转动体系中的上转盘、支撑腿、球铰、环形滑道和牵引体系参数的计算，同时对转体施工过程中的平衡称重试验将进行研究和监控。采用大型通用软件Midas/Civil对简化后的满堂支架模型简单的受力和变形进行了分析及验算，通过Midas/Civil对主梁在满堂支架施工过程中各施工阶段的变形和应力进行了分析，并将其分析的最终铺装后的结果和桥梁博士3.0分析的结果进行了对比。最后，现场对梁体在落架及水平转体过程中的内力及变形进行监控，主要包括实施方法以及变形和应力监控结果的对比分析等内容，从而为本桥的初转和正式转体的顺利提供可靠的保证。本论文对单T构桥梁水平转体施工技术进行了详细的计算和研究分析，对以后研究同类型的桥梁提供了一套完整的施工监测和控制方法。最终华丽的转“身”，表明了本监控的准确性，，本桥达到了满足受力要求、线形平整的预期目的。
[Abstract]:The construction of bridge rotation is a construction method in which the bridge structure is made (pouring or splicing) in the non-design axis position, and then the bridge is rotated in place. The single T structure bridge can speed up the construction speed and save the cost by adopting the rotary construction. It improves the security and reduces the influence on the operation of the existing lines, and it is favored by people in recent years. In this paper, based on the construction monitoring project of Hangzhou to Changsha (Hu-Kun) railway passenger dedicated line-Lake side of Yushan County, Shangrao City, Jiangxi Province, the construction monitoring of horizontal transposition of single T structure is introduced, and the development of bridge transfer construction technology is briefly introduced. The present situation of the research and the purpose and significance of the construction control of the bridge rotation. This paper mainly studies the rotating construction technology of the single T structure bridge without closure, including the upper rotating disk, the supporting leg and the ball hinge in the rotating system. The calculation of the parameters of the annular chute and the traction system, and the study and monitoring of the balance weighing test during the construction of the rotary body will be carried out at the same time. The simple force and deformation of the simplified full support model are analyzed and checked by using the large and universal software Midas/Civil. The deformation and stress of the main beam during the construction stage of the full support are analyzed by Midas/Civil. The results of the final pavement analysis and that of Dr. Bridge 3.0 are compared. Finally, the internal force and deformation of the beam in the process of falling frame and horizontal rotation are monitored on the spot, including the implementation method and the comparative analysis of the monitoring results of deformation and stress, etc. Thus, it can provide reliable guarantee for the initial turn and official rotation of the bridge. This paper has carried on the detailed calculation and the research analysis to the single T-structure bridge horizontal rotation construction technology. This paper provides a complete set of construction monitoring and control methods for studying the same type of bridges in the future. Finally, it turns to "body", which indicates the accuracy of this monitoring, and the bridge achieves the expected purpose of satisfying the stress requirement and leveling the line shape.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.46

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