本文選題：有軌電車列車 + 嵌入式軌道�。� 參考：《西南交通大學》2014年博士論文

【摘要】：有軌電車經(jīng)歷了興起-衰落-復興的階段。由于有軌電車具有廣泛的適用性及建設靈活性,可以滿足不同城市、不同區(qū)域、不同運量對軌道交通的不同需求,我國目前有25個省(區(qū)、市)的72座城市提出了建設現(xiàn)代有軌電車線路的發(fā)展規(guī)劃,超過40座城市已經(jīng)開展了現(xiàn)代有軌電車的路網(wǎng)規(guī)劃工作,規(guī)劃線路達到50條以上,規(guī)劃里程高達1300多公里,總投資將超過3000億元。但是,現(xiàn)代有軌電車在我國剛剛興起,還缺乏相關(guān)的建設和運營標準及相關(guān)的理論研究成果支撐。為保證現(xiàn)代有軌電車在我國的健康快速發(fā)展,急需對現(xiàn)代有軌電車系統(tǒng)開展深入的理論和試驗研究。因此,對有軌電車列車-嵌入式軌道耦合動力學性能研究具有重要的理論意義和工程應用價值。本文主要開展了以下幾方面的研究工作：(1)論文首先簡要回顧了國內(nèi)外有軌電車的發(fā)展和有軌電車系統(tǒng)動力學研究的歷史與現(xiàn)狀,明確了有軌電車列車-嵌入式軌道耦合動力學研究的意義和研究方向。(2)基于車輛-軌道耦合系統(tǒng)動力學理論和有限元方法,建立了比較完善的有軌電車列車-嵌入式軌道耦合系統(tǒng)動力學模型。模型中,列車簡化為96自由度的多剛體動力系統(tǒng),車間鉸接機構(gòu)采用動力學約束建模,車間減振器采用空間非線性阻尼單元模擬；利用Timoshenko梁模擬連續(xù)彈性支承基礎(chǔ)上的槽型軌,采用三維實體有限元單元模擬軌道板,鋼軌填充材料用三維粘彈性彈簧-阻尼單元模擬,嵌入式道床板底部的自密實混凝土支撐簡化為等效的彈簧-阻尼單元,不考慮路基的影響；車輛與鋼軌間通過非線性的輪軌關(guān)系耦合,采用跡線法和最小距離法確定輪軌接觸幾何關(guān)系；采用Hertz非線性彈性接觸理論求解輪軌法向力,采用沈氏理論確定輪軌切向力。通過仿真計算結(jié)果與現(xiàn)場測試結(jié)果的對比分析,驗證了有軌電車列車-嵌入式軌道耦合系統(tǒng)動力學模型的準確性與可靠性。(3)歸納總結(jié)了國內(nèi)外適用于有軌電車列車-嵌入式軌道耦合系統(tǒng)動力性能評定的相關(guān)標準和指標；介紹了國內(nèi)嵌入式軌道綜合試驗段上有軌電車與新型嵌入式軌道結(jié)構(gòu)的動力學試驗情況,初步分析與評估了試驗車輛與軌道的動力學性能；基于有軌電車列車-嵌入式軌道耦合動力學仿真計算,對有軌電車列車-嵌入式軌道耦合振動的基本特性進行了計算分析。(4)應用有軌電車列車-嵌入式軌道耦合系統(tǒng)動力學分析模型,從軌道幾何不平順敏感波長及安全限值兩方面入手對嵌入式軌道結(jié)構(gòu)的不平順控制策略進行研究,系統(tǒng)調(diào)查軌道幾何不平順對有軌電車動力學性能的影響規(guī)律,提出了有軌電車運行安全性和運行平穩(wěn)性指標的軌道幾何不平順敏感波長分別為1-20 m和1-40 m,以及方向、軌距、高低、水平和扭曲5種軌道幾何不平順安全限值,為現(xiàn)代有軌電車線路的標準建設和養(yǎng)護維修提供較為系統(tǒng)的理論依據(jù)。(5)基于軌道交通的典型輪軌傷損現(xiàn)象,建立了車輪擦傷、鋼軌焊接不平順、鋼軌波磨3種典型的輪軌傷損分析模型,系統(tǒng)地調(diào)查了車輪擦傷、鋼軌焊接不平順及鋼軌波磨3種典型的輪軌異常磨損形式對有軌電車列車-嵌入式軌道系統(tǒng)耦合振動行為的影響規(guī)律,并提出這3種典型輪軌傷損的養(yǎng)護維修策略。(6)應用有軌電車列車-嵌入式軌道耦合系統(tǒng)動力學分析模型,系統(tǒng)研究了承軌槽填充材料的剛度和阻尼、軌道板幾何尺寸、軌道板下支承材料的剛度和阻尼等結(jié)構(gòu)參數(shù)對有軌電車列車-嵌入式軌道耦合動力學性能的影響規(guī)律,提出了基于有軌電車動力學性能和軌道減振性能的嵌入式軌道結(jié)構(gòu)和性能參數(shù)的優(yōu)選范圍,為有軌電車的工程建設提供理論指導與參考。
[Abstract]:The tram has gone through the stage of rise, decline and rejuvenation. Due to the wide applicability and flexibility of the tram, the tram can meet the different needs of different cities, different regions and different transport quantities to rail traffic. At present, 72 cities in 25 provinces (districts and cities) in China have proposed the development plan for the construction of modern tram lines. In 40 cities, the road network planning of modern tram has been carried out. The planning line has reached more than 50 lines, the planning mileage is up to more than 1300 kilometers and the total investment will exceed 300 billion yuan. However, the modern tram has just risen in China and lacks the related construction and operation standards and the related theoretical research results. With the rapid development of tram in China, it is urgent to carry out deep theoretical and Experimental Research on modern tram system. Therefore, it is of great theoretical significance and engineering application value to study the dynamic performance of tram train embedded track coupling. The main research work in this paper is as follows: (1) first paper The development of trams at home and abroad and the history and status of tram system dynamics research are briefly reviewed, and the significance and research direction of the study of tram train embedded orbit coupling dynamics are clarified. (2) based on the dynamic theory of vehicle track coupling system and the finite element method, a more perfect tram train is established. In the model of vehicle embedded orbit coupling system, the train is simplified as a multi rigid body dynamic system with 96 degrees of freedom. The articulated mechanism of the workshop is modeled by dynamic constraints. The workshop damper is simulated with a spatial nonlinear damping element, and the Timoshenko beam is used to simulate the groove rail on the basis of continuous elastic support, and the three-dimensional entity is used. The rail filling material is simulated and the rail filling material is simulated by a three-dimensional viscoelastic spring damping element. The self compacting concrete support at the bottom of the embedded bed plate is simplified to the equivalent spring damping element, without considering the influence of the subgrade. The vehicle and the rail are coupled by the nonlinear wheel rail relationship, and the method of trace and minimum distance is used to determine. The geometric relationship between wheel and rail contact is fixed, and the Hertz nonlinear elastic contact theory is used to solve the wheel rail normal force, and the tangential force of the wheel rail is determined by the Shen's theory. The accuracy and reliability of the dynamic model of the tram train - embedded track coupling system are verified by comparison and analysis of the simulation results and the field test results. (3) sum up the general The relevant standards and indexes for evaluating the dynamic performance of the tram train - embedded track coupling system both at home and abroad are put forward, and the dynamic test of the tram and the new embedded track structure on the integrated test section of the domestic embedded track is introduced, and the dynamic performance of the test vehicle and track is preliminarily analyzed and evaluated. The basic characteristics of the tram train embedded track coupling vibration are calculated and analyzed in the tram train - embedded track coupling dynamics simulation. (4) the dynamic analysis model of the tram train - embedded track coupling system is used to start from the two aspects of the track geometric irregularity sensitive wavelength and the safety limit. The irregularity control strategy of the embedded track structure is studied. The influence law of track geometric irregularity on the dynamic performance of tram is systematically investigated. The track geometric irregularity wavelengths are 1-20 m and 1-40 m respectively, and the direction, gauge, height, level and twist of the rail vehicle running safety and running stability are proposed. The safety limit of 5 kinds of track geometric irregularities provides a more systematic theoretical basis for the standard construction and maintenance of modern tram lines. (5) based on the typical rail traffic damage phenomenon, 3 typical wheel rail damage analysis models are established, including wheel scraping, rail welding irregularity and rail corrugation, and the wheel rail damage analysis model is systematically investigated. The effect of 3 typical irregular wheel rail wear forms on the coupling vibration behavior of the tram train embedded track system, and the maintenance strategies for the 3 typical wheel rail damage damage are put forward. (6) the dynamic analysis model of the tram train embedded track coupling system is applied to the system research. The influence of the stiffness and damping of the rail trench filling material, the geometric size of the rail plate, the stiffness and damping of the supporting material under the track plate on the dynamic performance of the train embedded track in the tram train are studied. The embedded track structure and the performance parameter based on the dynamic performance of the tram and the vibration damping of the rail are also proposed. The optimum range of number provides theoretical guidance and reference for the construction of trams.
【學位授予單位】：西南交通大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：U492.433
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本文編號：2067077