本文選題：有軌電車 + 嵌入式軌道　； 參考：《西南交通大學(xué)》2015年碩士論文

【摘要】：現(xiàn)代有軌電車嵌入式軌道結(jié)構(gòu)橋上鋪設(shè)無縫線提高了線路運(yùn)營的平順性,能夠減小有軌電車的動力作用和軌道維修工作量,延長軌道結(jié)構(gòu)和橋梁的使用壽命。但是由于存在梁軌相互作用使得鋼軌、支座和墩頂產(chǎn)生附加縱向力,對橋上無縫線路鋼軌強(qiáng)度、穩(wěn)定性產(chǎn)生影響等帶來問題,從而影響橋上無縫線路的鋪設(shè)。本文在國內(nèi)外已有的研究基礎(chǔ)上,主要對嵌入式軌道結(jié)構(gòu)橋上無縫線路梁軌相互作用以及設(shè)計鎖定軌溫的方法進(jìn)行研究。首先,研究嵌入式軌道結(jié)構(gòu)橋上無縫線路梁軌相互作用的機(jī)理,分析橋上無縫線路伸縮力、撓曲力和制動力等產(chǎn)生的原因和過程,并對影響橋上梁軌相互作用的因素進(jìn)行討論。其次,分析研究橋上嵌入式軌道結(jié)構(gòu)各部件的功用和性能,在參考研究成果的基礎(chǔ)上,建立了橋上嵌入式軌道結(jié)構(gòu)的梁軌相互作用計算模型,并闡述計算過程中的思路和方法。然后,根據(jù)成都市金鳳凰大道實(shí)際工程,選取含連續(xù)梁和簡支梁的特殊結(jié)構(gòu)的線路,通過建立的梁軌相互作用計算模型,分析研究由線路縱向阻力、支座剪切剛度、墩頂縱向剛度、制動率等因素對橋上無縫線路附加縱向力、梁軌相對位移以及支座和墩頂?shù)目v向力產(chǎn)生的影響。最后,通過分析嵌入式軌道結(jié)構(gòu)橋上無縫線路穩(wěn)定性概念、失穩(wěn)過程及其影響因素,建立穩(wěn)定性模型,計算橋上無縫線路穩(wěn)定允許溫升；利用準(zhǔn)靜態(tài)法對鋼軌中產(chǎn)生的動彎應(yīng)力進(jìn)行分析研究；通過強(qiáng)度條件分別計算鋼軌允許溫升和溫降,并對橋上無縫線路鎖定軌溫進(jìn)行計算和探討。
[Abstract]:The laying of seamless lines on the embedded track structure bridge of modern tram improves the smoothness of line operation, reduces the power function and track maintenance workload of tram, and prolongs the service life of track structure and bridge. However, due to the existence of beam-rail interaction, additional longitudinal forces are produced on the rail, supports and piers, which affect the strength and stability of the jointless rail on the bridge, thus affecting the laying of the jointless track on the bridge. Based on the existing research at home and abroad, this paper mainly studies the interaction of rail beam and rail on embedded track structure bridge and the method of designing locked rail temperature. Firstly, the mechanism of the interaction between the beam and rail of the jointless track on the embedded track structure bridge is studied, the causes and processes of the stretching force, the flexural force and the braking force of the jointless track on the bridge are analyzed, and the factors influencing the interaction between the beam and the rail on the bridge are discussed. Secondly, the function and performance of the components of embedded track structure on the bridge are analyzed. Based on the research results, the calculation model of the beam-rail interaction of the embedded track structure on the bridge is established, and the ideas and methods in the calculation process are expounded. Then, according to the actual project of Jinghuang Avenue in Chengdu, the line with special structure including continuous beam and simply supported beam is selected, and the longitudinal resistance and shear stiffness of support are analyzed through the established calculation model of beam-rail interaction. The effects of the longitudinal stiffness and braking ratio of the pier top on the additional longitudinal force of the jointless track on the bridge the relative displacement of the beam and rail and the longitudinal force of the support and the top of the pier. Finally, by analyzing the concept of the stability of the seamless track on the embedded track structure bridge, the instability process and its influencing factors, the stability model is established, and the allowable temperature rise of the jointless track on the bridge is calculated. The dynamic bending stress in rail is analyzed by quasi-static method, and the allowable temperature rise and temperature drop of rail are calculated by strength condition, and the temperature of jointless track locking on bridge is calculated and discussed.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U441.7

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本文編號：1817087