發(fā)布時間：2018-10-15 17:34

【摘要】：隨著我國高速鐵路建設(shè)的發(fā)展，我國高速鐵路已經(jīng)開始進(jìn)入山區(qū)時代，如大西南地區(qū)。在這些地區(qū)修建高速鐵路，是過了橋梁就是隧道，橋隧相連，堪稱世界一絕。早期的運(yùn)架分離式設(shè)備無法解決隧道進(jìn)出口零距離架梁問題，均需設(shè)置很多限制條件并需進(jìn)行較大拆解才能架設(shè)。而運(yùn)架一體機(jī)雖然可解決隧道進(jìn)出口架梁問題，，但其功效較運(yùn)架分離式設(shè)備低很多，且設(shè)備運(yùn)梁油耗大，架梁成本高。故急需開發(fā)一種既兼?zhèn)溥\(yùn)架分離式設(shè)備的功效高、運(yùn)梁油耗省的優(yōu)點(diǎn)，又可解決隧道進(jìn)出口零距離架設(shè)甚至隧道內(nèi)架梁的運(yùn)架分離式架梁施工裝備。 本文主要研究以下內(nèi)容： 分析了國內(nèi)外架橋機(jī)的概況、對現(xiàn)有高速鐵路架橋機(jī)主要機(jī)型及其特點(diǎn)進(jìn)行了介紹，通過分析，提出了一種運(yùn)架分離式過隧道架梁機(jī)型，并對該機(jī)型的技術(shù)特點(diǎn)進(jìn)行了介紹。 分析了隧內(nèi)外通用架橋機(jī)的基本結(jié)構(gòu)組成，詳細(xì)研究了的該機(jī)型在各種工況下的施工工法，通過施工方法的分析，表明該新機(jī)型滿足了隧道進(jìn)出口及隧道內(nèi)架梁的施工要求，同時實(shí)現(xiàn)了部分運(yùn)架分離，采用運(yùn)梁車運(yùn)梁繼承了運(yùn)架分離式架梁設(shè)備運(yùn)梁油耗省、運(yùn)梁速度快、適應(yīng)坡度大、通過曲線小等優(yōu)點(diǎn)，提高了運(yùn)架設(shè)備功效、降低了運(yùn)架梁成本。 對隧內(nèi)外通用架橋機(jī)各主要機(jī)構(gòu)部件進(jìn)行了設(shè)計(jì)計(jì)算。通過計(jì)算確定了各部件的選型型號及設(shè)備的各項(xiàng)運(yùn)行參數(shù)。為架橋機(jī)的良好運(yùn)行提供了設(shè)計(jì)保證。 對隧內(nèi)外通用架橋機(jī)的傾覆穩(wěn)定性、主梁剛度及強(qiáng)度進(jìn)行了理論計(jì)算，同時建立了架橋機(jī)主梁最不利工況的三維結(jié)構(gòu)的受力分析模型，利用ANSYS有限元分析軟件對新型運(yùn)架主梁結(jié)構(gòu)進(jìn)行三維有限元分析，通過仿真計(jì)算，與理論分析對比，給出理論分析的安全裕度，同時分析計(jì)算溫度變化對主梁的影響。最后對主梁進(jìn)行模態(tài)分析，給出有效規(guī)避引起主梁共振的載荷因素。通過對本機(jī)型上述關(guān)鍵技術(shù)的研究及計(jì)算，確保了架橋機(jī)安全穩(wěn)定的運(yùn)行。 對設(shè)備投入使用后，現(xiàn)場架橋機(jī)產(chǎn)生的一些主要問題給出了解決方案。通過這些方案的實(shí)際實(shí)施，提高了架橋機(jī)的運(yùn)行穩(wěn)定性，降低了架橋機(jī)的故障率。最后對本機(jī)型進(jìn)一步提高功效給出了設(shè)計(jì)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.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U445.36

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