TTSJ900隧内外通用架桥机的设计分析及研制

发布时间：2018-10-15 17:34

【摘要】：随着我国高速铁路建设的发展，我国高速铁路已经开始进入山区时代，如大西南地区。在这些地区修建高速铁路，是过了桥梁就是隧道，桥隧相连，堪称世界一绝。早期的运架分离式设备无法解决隧道进出口零距离架梁问题，均需设置很多限制条件并需进行较大拆解才能架设。而运架一体机虽然可解决隧道进出口架梁问题，，但其功效较运架分离式设备低很多，且设备运梁油耗大，架梁成本高。故急需开发一种既兼备运架分离式设备的功效高、运梁油耗省的优点，又可解决隧道进出口零距离架设甚至隧道内架梁的运架分离式架梁施工装备。本文主要研究以下内容：分析了国内外架桥机的概况、对现有高速铁路架桥机主要机型及其特点进行了介绍，通过分析，提出了一种运架分离式过隧道架梁机型，并对该机型的技术特点进行了介绍。分析了隧内外通用架桥机的基本结构组成，详细研究了的该机型在各种工况下的施工工法，通过施工方法的分析，表明该新机型满足了隧道进出口及隧道内架梁的施工要求，同时实现了部分运架分离，采用运梁车运梁继承了运架分离式架梁设备运梁油耗省、运梁速度快、适应坡度大、通过曲线小等优点，提高了运架设备功效、降低了运架梁成本。对隧内外通用架桥机各主要机构部件进行了设计计算。通过计算确定了各部件的选型型号及设备的各项运行参数。为架桥机的良好运行提供了设计保证。对隧内外通用架桥机的倾覆稳定性、主梁刚度及强度进行了理论计算，同时建立了架桥机主梁最不利工况的三维结构的受力分析模型，利用ANSYS有限元分析软件对新型运架主梁结构进行三维有限元分析，通过仿真计算，与理论分析对比，给出理论分析的安全裕度，同时分析计算温度变化对主梁的影响。最后对主梁进行模态分析，给出有效规避引起主梁共振的载荷因素。通过对本机型上述关键技术的研究及计算，确保了架桥机安全稳定的运行。对设备投入使用后，现场架桥机产生的一些主要问题给出了解决方案。通过这些方案的实际实施，提高了架桥机的运行稳定性，降低了架桥机的故障率。最后对本机型进一步提高功效给出了设计方案。
[Abstract]:With the development of high-speed railway construction in our country, high-speed railway in our country has begun to enter the mountainous area, such as southwest China. The construction of high-speed railways in these areas is a bridge is a tunnel, bridge and tunnel connected, can be called a world. The early separation equipment can not solve the problem of zero distance beam erection at the entrance and outlet of tunnel, so it is necessary to set up a lot of limiting conditions and to disassemble the beam before it can be erected. Although the integrated machine can solve the problem of beam erection at the entrance and outlet of the tunnel, its efficiency is much lower than that of the separated equipment, and the fuel consumption of the equipment is large, and the cost of beam erection is high. Therefore, it is urgent to develop a kind of construction equipment which not only has high efficiency and low fuel consumption, but also can solve the problem of erecting the tunnel entrance and exit at zero distance or even the construction equipment of the separated beam erection inside the tunnel. The main contents of this paper are as follows: the general situation of bridge erectors at home and abroad is analyzed, and the main models and characteristics of existing high-speed railway bridge erectors are introduced. The technical characteristics of the machine are also introduced. This paper analyzes the basic structure of the common bridge erecting machine inside and outside the tunnel, and studies in detail the construction method of this machine under various working conditions. Through the analysis of the construction method, it shows that the new model can meet the construction requirements of the tunnel entrance and exit and the beam erection inside the tunnel. At the same time, the separation of part of the transport frame is realized. The transportation beam inherits the saving of fuel consumption of the transport frame separation type beam erecting equipment, the speed of carrying beam is fast, the adaptive slope is large, and through the small curve and so on, the efficiency of the transportation equipment is improved, and the cost of the transportation and erection of beam is reduced. The design and calculation of the main components of the common bridge erecting machine inside and outside the tunnel are carried out. The model selection of each component and the operation parameters of the equipment are determined by calculation. It provides the design guarantee for the good operation of the bridge erecting machine. The overturning stability, stiffness and strength of the main beam are calculated theoretically, and the stress analysis model of the 3D structure under the most unfavorable working conditions of the main girder of the bridge erecting machine is established. The ANSYS finite element analysis software is used to analyze the three dimensional finite element analysis of the new type of main girder structure. The safety margin of the theoretical analysis and the influence of temperature change on the main beam are analyzed and compared with the theoretical analysis through the simulation calculation and the comparison between the simulation calculation and the theoretical analysis. Finally, the modal analysis of the main beam is carried out, and the load factors which can effectively avoid the resonance of the main beam are given. Through the research and calculation of the key technology mentioned above, the safe and stable operation of the bridge erector is ensured. After the equipment is put into use, some main problems arising from the field bridge erection machine are solved. Through the practical implementation of these schemes, the stability of the bridge erecting machine is improved and the failure rate of the bridge erecting machine is reduced. At last, the design scheme is given to further improve the efficiency of the machine.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.36

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