大跨径连续刚构桥施工监测及反馈控制研究

发布时间：2018-03-13 11:23

本文选题：大跨径　切入点：刚构桥　出处：《重庆交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文针对某一在建特大桥上部施工的分析以及控制措施作为研究背景,采用正装分析法以及数值模拟等手段对其进行分析评价并采取有效的控制措施。本文的主要研究内容有:1.通过现场实际情况以及各种控制方案的对比,为该刚构桥施工的正确分析和采取措施的合理性提供了必要的阐述。2.通过midas civil软件对刚构桥上部结构建立数值计算模型,分析其变形情况以及受力的情况,为后续的施工提供理论指导。3.根据数值计算模型,同时结合现场实际施工中采集的数值,两者进行比较后,结合实际情况,调整计算模型,以达到修正偏差来实现监控和掌握桥梁结构线形的目的,同时根据设置的预拱度,合理地设定结构物的标高。4.根据现场情况进行了不同调整,最后根据上部结构成型的监测数据,满足最大悬臂时合拢段两端高差控制在±3.0cm以内的监控要求,各合龙段在允许偏差范围内顺利合龙,实际施工应力基本满足相关要求。
[Abstract]:In this paper, the research background is the analysis and control measures of the upper part of a large bridge under construction. The formal dress analysis method and numerical simulation are used to analyze and evaluate it and effective control measures are taken. The main research content of this paper is: 1.Through the actual situation on the spot and the comparison of various control schemes, the main contents of this paper are as follows: 1. This paper provides a necessary exposition for the correct analysis of the construction of the rigid frame bridge and the rationality of the measures taken. By using midas civil software, the numerical calculation model of the superstructure of the rigid frame bridge is established, and the deformation and the stress of the rigid frame bridge are analyzed. To provide theoretical guidance for subsequent construction .3.According to the numerical calculation model, combined with the data collected in the field construction, the two methods are compared and combined with the actual situation, the calculation model is adjusted. In order to realize the purpose of monitoring and mastering the alignment of the bridge structure, the elevation of the structure is set reasonably according to the pre-arched degree set, and the elevation of the structure is adjusted according to the situation of the field, so as to realize the purpose of monitoring and mastering the alignment of the bridge structure. Finally, according to the monitoring data of superstructure forming, it meets the monitoring requirement that the height difference between the two ends of the closing section is controlled within 卤3.0 cm when the maximum cantilever is closed, and each closure section closes smoothly within the allowable deviation, and the actual construction stress basically meets the relevant requirements.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4

【相似文献】