凫洲大桥移动模架造桥机的设计与施工技术研究

发布时间：2018-03-06 00:16

本文选题：移动模架造桥机　切入点：设计制造　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：目前,桥梁上部结构施工的主要方法有支架现浇法、预制安装法和移动模架逐孔施工法。移动模架法施工属于较新颖的施工工艺,与其它施工方法相互比较,具有占地面积小、无需基础处理和对桥下净空要求低等优点,该施工法属于支架法施工的一种。该方法所采用的设备称为移动模架造桥机,它是一种自带模板,利用承台或墩柱作为支承,对桥梁进行现场浇筑的施工机械,已广泛地被采用在公路桥、铁路桥的连续梁施工中,是较为先进的施工方法。移动模架造桥机目前来看是一种较为先进的造桥施工设备,它对建造混凝土箱梁有许多优点,如机械化程度高、施工速度快、适用范围广、施工质量高等,在国内外已被广泛使用,而国内造桥机的研究相对来说比较晚一些。本文结合作者参与的广东凫洲大桥工程为背景,针对施工中用到的上行式移动模架造桥机进行结构设计和施工工艺研究。文中首先介绍了移动模架造桥机的主要类型,对各自进行了比较,结合施工实际情况要求和相关参数,进行了整体方案设计;其次阐述了该造桥机的结构组成、工作原理,对其工况和荷载进行了分析;根据移动模架造桥机的结构和施工原理,利用有限元计算软件ANSYS进行了分析计算,重点对主要构件建立了三维有限元模型,分析了该造桥机的主要结构件在不同工况下的应力变形,为造桥机的整体设计和制造提供了相关依据;最后介绍了移动模架造桥机的施工技术及施工线性控制技术的运用。论文重点讲述造桥机的整体设计和制造安装,并队整机施工前进行了静载试验验,验证了造桥机的刚度和强度指标,特别是对施工工艺和各种工况进行了分析,所设计的移动模架造桥机己投入实际施工,并且在施工中运用良好。论文的研究对同类型造桥机设计制造具有一定的指导意义,也对该类型的桥梁施工工艺有一定的借鉴意义。
[Abstract]:At present, the main methods of bridge superstructure construction are support cast-in-place method, precast installation method and moving mould frame construction method. The moving mould frame construction is a relatively new construction technology, and compared with other construction methods, it has a small area. The construction method is a kind of support construction method. The equipment used in this method is called mobile mould frame bridge-making machine. It is a kind of own formwork, which uses the cap or pier column as the support. The construction machinery for in-situ pouring of bridges has been widely used in the continuous beam construction of highway bridges and railway bridges, which is a more advanced construction method. It has many advantages on the construction of concrete box girder, such as high degree of mechanization, high speed of construction, wide range of application, high quality of construction, etc., and has been widely used at home and abroad. However, the study of bridge builders in China is relatively late. In this paper, the author participated in the project of Guangdong Fuzhou Bridge as the background. This paper studies the structure design and construction technology of the uplink moving mould frame bridge machine used in construction. First of all, this paper introduces the main types of the mobile mould frame bridge construction machine, compares them with each other, and combines with the actual construction requirements and relevant parameters. The whole scheme is designed. Secondly, the structure, working principle, working condition and load of the bridge construction machine are expounded. According to the structure and construction principle of the mobile mould frame bridge maker, the structure and construction principle of the bridge construction machine are discussed. The finite element calculation software ANSYS is used to analyze and calculate, the 3D finite element model of the main components is established, and the stress and deformation of the main structural parts of the bridge construction machine under different working conditions are analyzed. This paper provides the relevant basis for the overall design and manufacture of the bridge building machine, and finally introduces the construction technology and the application of the construction linear control technology of the mobile mould frame bridge-making machine. The paper focuses on the overall design and manufacturing installation of the bridge building machine. The static load test was carried out before the construction of the whole machine, and the stiffness and strength indexes of the bridge builder were verified. In particular, the construction technology and various working conditions were analyzed, and the designed mobile mould frame bridge-making machine was put into actual construction. The research of this paper has certain guiding significance to the design and manufacture of the same type bridge construction machine, and also has certain reference significance to the bridge construction technology of the same type.
【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

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