系杆拱桥施工过程分析与监控

发布时间：2018-01-29 20:15

本文关键词： 系杆拱桥施工监控有限元分析稳定性吊杆索力　出处：《合肥工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：环巢湖旅游大道派河大桥是一座三跨下承式钢箱系杆拱桥,钢结构施工采用少支架法,先主梁后拱肋吊装施工。论文对此拱桥上部结构施工全过程进行受力分析和监控。主要完成的工作如下：1.简要介绍了钢箱系杆拱桥的结构形式和施工方法,以及施工过程中的监控方法,阐述了桥梁施工监控发展与研究现状。2.利用有限元软件Midas /Civil建立了系杆拱桥的空间结构模型,根据实际施工过程对派河大桥进行施工阶段分析,计算分析得到该桥在主要施工阶段的受力及线形变化。并对派河大桥进行了施工过程中的稳定性分析,结果表明施工过程中结构具有较高的稳定系数。3.制定了派河大桥具体监控内容与方案,对系梁与拱肋的应力和变形进行监测,将监测值与理论值进行对比,实时调整施工过程中的标高等线形数据,确保桥梁施工过程中的安全,使得拱桥施工过程中的应力和线形得到较好的控制,并达到设计要求。4.分别讨论了影响矩阵法和基于径向基神经网络方法的系杆拱桥吊杆施工张拉力控制分析,并对施工过程索力进行实测,与理论值对比,为成桥吊杆索力达到设计要求提供了保证。
[Abstract]:The Pihe Bridge around Chaohu tourist Avenue is a three-span through steel box tie arch bridge. The construction of steel structure adopts the method of less support. The paper analyzes and monitors the whole process of the arch bridge superstructure construction. The main work is as follows: 1. The structure form and construction method of the steel box tied arch bridge are introduced briefly. The development and research status of bridge construction monitoring and control are described. 2. The spatial structure model of tied arch bridge is established by using the finite element software Midas / Civil. According to the actual construction process, the construction stage of the Paihe Bridge is analyzed, and the force and linear changes of the bridge in the main construction stage are obtained by calculation and analysis, and the stability of the Paihe Bridge during the construction process is analyzed. The results show that the structure has a high stability coefficient .3.The concrete monitoring content and scheme of Paihe Bridge are established, the stress and deformation of the girders and arch ribs are monitored, and the monitoring values are compared with the theoretical values. In order to ensure the safety of bridge construction, the stress and alignment of arch bridge can be controlled well by adjusting the elevation and other linear data in the process of construction in real time. And meet the design requirements .4.The influence matrix method and the radial basis function neural network method based on the tie arch bridge suspenders construction tension control analysis, and the construction process of the cable force measured, compared with the theoretical values. It provides a guarantee for the cable force of the suspension rod to meet the design requirements.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4;U448.225

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