【作者】 何艺斌；

【导师】 吉晓民； 曹惠民；

【作者基本信息】 西安理工大学 ， 机械工程， 2008， 硕士

【摘要】 在我国近远期交通规划中,客运专线的规模在逐年地增加。在客运专线的施工中,桥梁的建造是施工的重中之重。为了提高施工质量,加快施工进度,节约建设资金,设计和使用造桥机显得十分必要。移动模架造桥机是一种先进的造桥施工设备,它对建造PC混凝土箱梁有许多优点,如机械化程度高、施工速度快、施工质量高、适用范围广等等,所以在国外已被广泛使用,而国内造桥机的研究起步较晚。本文结合作者单位承担的上行式移动模架客运专线造桥机设计与制造任务,对其方案设计、结构体系及工况分析、静力强度和刚度进行了研究,并通过加载试验予以验证。文中首先介绍了移动模架造桥机的主要类型并对各自的特点做了概括,依据用户的技术要求,总结出了上行式移动模架造桥机的设计依据和技术规范,进行了方案设计；其次详细阐述了该造桥机的构成、工作原理和施工工艺,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,利用大型有限元计算软件ANSYS为分析计算工具,建立了造桥机三维有限元模型,分析了该造桥机的主要结构件在制梁和移位过程中多种工况的应力和变形等力学性能,为结构设计提供了依据；最后,介绍了移动模架造桥机的加载试验过程,并将实验结果与理论计算相比较,验证了设计的正确性。论文的整个工作理论结合实际,特别是对施工工艺和各种工况进行了深入分析,为采用有限元软件进行分析计算奠定了良好的基础。所设计的移动模架造桥机已投入实际施工,作者在施工现场参加了安装调试和加载试验,得到了宝贵的第一手资料。论文的研究成果对该型造桥机设计有重要的指导意义,对其它类型造桥机的设计也有一定的参考价值。更多还原

【Abstract】 Our country’s near and long-term traffic planning shows that the scale of the passenger-only lines is increasing year by year. In the construction of the passenger-only lines, the construction of bridges is the most important project. In order to enhance the quality of the construction, accelerate the speed of construction and save the investment, the necessity of the design and application of bridge erection machines is increasing greatly.Move Support System Bridge Erection Machine (MSS for short) is an advanced equipment for bridge construction. The machine has a lot of advantages to build PC box girders, such as high mechanization level, quick construction speed, good quantity and wide application scope, etc.. It has been widely used in overseas. Relatively, the research on bridge erection machine at domestic is later. Based on the design and manufacture of the upper-moving MSS for passenger-only lines construction carried out in author’s company, the research of this paper focus on scheme design, analysis of constitution and working conditions, static strength and rigidity of this type of machine and the validity of the results was proved by loading experiments.First, the main types of MSS and the characteristics of each system were described. According to the technical requirements from user, design specifications were summed up and scheme design was carried out for upper-movement MSS. Then, the constitution, operation principle and processes of this machine were described in detail, and the working conditions and loads of MSS were analyzed. Thirdly, based on the structure and construction principle, the 3D models of MSS were established in the famous FEM software ANSYS. The stresses and deformations of important elements in multiple conditions were calculated, which provided a guideline for structural design of MSS. Finally, the process of loading experiments was introduced and the results of experiments were compared with that of calculations. The validity of the results was proved. It showed the design of MSS was satisfactory.The paper combined the theory with practice. Specially, the operation processes and working conditions were analyzed in detail, which provided a good foundation for FEM analysis. The designed MSS Bridge Erection Machine has been put in use, and the author took part in the assembly and loading experiments in the field. The research results in this paper would provide guidelines for the design of this type of machine and would be helpful for the design of other type machines.更多还原