PC连续梁桥施工控制与检测技术

发布时间：2018-03-04 02:11

本文选题：施工控制　切入点：正装分析法　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国交通事业的不断发展,桥梁建设也取得了十分辉煌的成就。预应力混凝土由于其优良的经济效益以及成熟的设计施工工艺在近几年来也得到了迅猛的发展。本文以某PC连续梁桥为工程实例,分析研究了连续梁桥悬臂浇筑施工过程中施工控制以及成桥使用性能评估的问题。本文介绍了目前连续梁桥的基本概况、施工方式以及国内外施工控制的现状以及发展。详细介绍了桥梁施工监控中的监控方法,包括开环控制法、闭环控制法、自适应控制法,以及监控分析方法,包括正装分析法和倒装分析法。提出了在连续梁桥施工分析时正装分析法与倒装分析法相结合,在监控中采用自适应控制法。本文实例中运用MIDAS/Civil建立全桥控制模型,计算出连续梁在各施工阶段的位移内力结果,并将计算数据与实测数据做对比,根据监测的成果对误差进行分析,并对下一阶段的立模标高进行调整,直至全桥顺利合龙。本文详述了某PC连续梁桥施工技术、施工过程以及施工控制结果。通过有效的模型分析计算以及监控方法保证了某PC连续梁桥施工完成。某PC连续梁桥的施工控制方案切实可行,并取得了良好的效果。本文最后详述了某PC连续梁桥荷载试验的实施与结果分析。通过成桥线形测量以及动、静荷载试验,评定结果某PC连续梁桥成桥使用性能优良满足设计要求。从而论证了某PC连续梁桥设计施工合理,施工监控切实有效。
[Abstract]:With the continuous development of China's transportation industry, The prestressed concrete has been developed rapidly in recent years because of its excellent economic benefit and mature design and construction technology. In this paper, a PC continuous beam bridge is taken as an engineering example. In this paper, the problems of construction control and performance evaluation of continuous beam bridge during cantilever construction are analyzed and studied. The basic situation of continuous beam bridge is introduced in this paper. This paper introduces the monitoring methods of bridge construction monitoring, including open-loop control method, closed-loop control method, adaptive control method, and monitoring and analysis method. In this paper, the author puts forward the combination of the formal analysis method and the inverted analysis method in the construction analysis of continuous girder bridge, and adopts adaptive control method in the monitoring and control. In this paper, MIDAS/Civil is used to establish the full bridge control model. The results of displacement internal force of continuous beam in each stage of construction are calculated, and the calculated data are compared with the measured data, and the error is analyzed according to the monitoring results, and the elevation of the next stage of vertical formwork is adjusted. The construction technology of a PC continuous beam bridge is described in detail. Through effective model analysis, calculation and monitoring method, the construction of a PC continuous beam bridge is ensured. The construction control scheme of a PC continuous beam bridge is feasible. Finally, the implementation and analysis of the load test of a PC continuous beam bridge are described in detail. Through the bridge alignment measurement and the dynamic and static load tests, The evaluation results show that the performance of a PC continuous beam bridge is good enough to meet the design requirements, and it is proved that the design and construction of a PC continuous beam bridge are reasonable and the construction monitoring is effective.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4

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