本文選題：駝峰 + 溜放區(qū)��； 參考：《北京交通大學(xué)》2017年博士論文

【摘要】：現(xiàn)有駝峰設(shè)計(jì)規(guī)范及相關(guān)文獻(xiàn)在駝峰線路設(shè)計(jì)方面缺乏對(duì)車輛自身溜放安全性的考慮,研究駝峰線路設(shè)計(jì)參數(shù)與車輛行車性能之間的關(guān)系,有助于通過(guò)改善線路條件來(lái)提高車輛溜放安全性。本文在分析駝峰車輛溜放過(guò)程的基礎(chǔ)上,采用試驗(yàn)研究和理論研究相結(jié)合的方法,探明車輛溜放至駝峰不同區(qū)域的行車性能,并分別從線路設(shè)計(jì)及線路養(yǎng)護(hù)維修角度,研究駝峰線路設(shè)計(jì)參數(shù)與車輛行車性能之間的關(guān)系。主要研究工作如下:(1)建立駝峰溜放區(qū)線路條件與車輛溜放速度之間的關(guān)系。在總結(jié)駝峰溜放區(qū)線路設(shè)置方式的基礎(chǔ)上,分析溜放車輛運(yùn)行過(guò)程,建立了車輛溜放速度計(jì)算模型,并運(yùn)用該模型研究了加速坡坡長(zhǎng)與坡度匹配關(guān)系對(duì)車輛溜放速度的影響規(guī)律。(2)進(jìn)行駝峰溜放區(qū)行車性能試驗(yàn)研究。在介紹豐西編組站駝峰車輛行車性能試驗(yàn)的基礎(chǔ)上,歸納總結(jié)并分析比較了不同車型車輛在該駝峰溜放時(shí)的試驗(yàn)結(jié)果。通過(guò)分析研究現(xiàn)場(chǎng)試驗(yàn)所反映的駝峰溜放區(qū)車輛行車性能,提出駝峰溜放區(qū)道岔尖軌是影響車輛溜放安全的薄弱位置。(3)建立駝峰溜放區(qū)車輛行車性能計(jì)算模型。在綜合考慮駝峰溜放區(qū)復(fù)雜的平縱斷面線路條件、車輛及軌道參振特性及輪軌間動(dòng)態(tài)幾何接觸關(guān)系的基礎(chǔ)上,建立了駝峰溜放區(qū)行車性能計(jì)算分析模型,運(yùn)用所建模型分別計(jì)算研究了主型溜放車輛C70、GQ70、P70及X70在空載和滿載工況下溜放時(shí)的行車性能,并將計(jì)算結(jié)果與實(shí)車試驗(yàn)結(jié)果進(jìn)行對(duì)比分析,驗(yàn)證了所建車輛行車性能分析模型的合理性。(4)研究駝峰關(guān)鍵線路設(shè)計(jì)參數(shù)對(duì)車輛行車安全性的影響。根據(jù)駝峰溜放區(qū)車輛行車性能試驗(yàn)及理論研究中所提出的線路薄弱位置,有針對(duì)性的選擇平縱斷面線路參數(shù),運(yùn)用所建溜放車輛行車性能計(jì)算模型,研究了第一分路道岔與岔前曲線間夾直線、加速坡與中間坡變坡點(diǎn)位置、加速坡與中間坡坡度代數(shù)差、加速坡坡長(zhǎng)等線路參數(shù)對(duì)車輛行車安全性的影響,并運(yùn)用計(jì)算結(jié)果對(duì)既有駝峰設(shè)計(jì)規(guī)范中關(guān)于線路設(shè)計(jì)參數(shù)的規(guī)定進(jìn)行了檢驗(yàn)。(5)從提高車輛行車性能角度對(duì)駝峰線路設(shè)計(jì)參數(shù)進(jìn)行優(yōu)化研究。運(yùn)用所建溜放車輛行車性能計(jì)算模型,采用車輛行車平穩(wěn)性評(píng)價(jià)指標(biāo),從提高車輛行車性能角度,對(duì)駝峰溜放區(qū)平縱斷面設(shè)計(jì)參數(shù)進(jìn)行了優(yōu)化研究,并進(jìn)一步運(yùn)用遺傳算法與BP神經(jīng)網(wǎng)絡(luò)進(jìn)行溜放區(qū)平縱斷面線路參數(shù)匹配關(guān)系研究,得到了駝峰第一分路道岔與岔前曲線間夾直線長(zhǎng)度以及加速坡與中間坡間變坡點(diǎn)距尖軌距離二者間的最優(yōu)匹配關(guān)系。(6)研究線路條件變化對(duì)車輛行車性能的影響。以實(shí)例分析的方式,針對(duì)脫軌事故頻發(fā)的某駝峰溜放區(qū),運(yùn)用所建溜放車輛行車性能計(jì)算模型,研究了線路幾何形位變化與車輛溜放安全之間的關(guān)系,并針對(duì)計(jì)算實(shí)例中線路條件所發(fā)生的變化,分析研究了尖軌軌距變化、縱斷面沉降變形等線路條件變化對(duì)車輛行車性能的影響。
[Abstract]:The existing design specifications of hump design and related literature are lacking in the design of hump line. The study of the relationship between the design parameters of the hump line and the performance of the vehicle is helpful to improve the safety of the rolling stock by improving the line conditions. Using the method of combining the experimental research and the theoretical research, this paper explores the driving performance of the vehicle slipping to different hump regions, and studies the relationship between the design parameters of the hump line and the performance of the vehicle from the line design and the line maintenance and maintenance. The main research work is as follows: (1) establishing the line conditions and vehicle skating in the hump skating area The relationship between speed. On the basis of summarizing the line setting mode of the hump skating area, the running process of the skating vehicle is analyzed, and the calculation model of the speed of the rolling stock is established. And the model is used to study the influence law of the matching relationship between the length and the slope of the sloping slope on the speed of the rolling stock. (2) the test of the running performance of the hump skating area is carried out. On the basis of introducing the performance test of the hump vehicle in Feng Xi marshalling station, the results of the test of different vehicles in this hump are summarized and compared. Through the analysis and study of the vehicle performance in the hump skating area, it is put forward that the turnout rail in the hump skating area is the weakness that affects the safety of the vehicle skating. (3) establish a calculation model for the performance of the vehicle in the hump skating area. On the basis of comprehensive consideration of the complex horizontal and longitudinal section line conditions, the vibration characteristics of the vehicle and track and the dynamic geometric contact between the wheel and rail, the calculation and analysis model of the traffic performance in the hump skating area is established, and the main model is calculated and studied by the built model. The performance of C70, GQ70, P70 and X70 for skating in empty and full load conditions, and comparing the calculation results with the actual test results to verify the rationality of the vehicle performance analysis model. (4) study the influence of the design parameters of the key line of the hump on the safety of the vehicle. In the performance test and theoretical study of the vehicle, the line parameters of the vertical section are selected, and the line between the first shunt and the front of the fork, the position of the acceleration slope and the middle slope, the algebraic difference between the accelerated slope and the middle slope, and the difference of the algebraic difference between the accelerated slope and the middle slope are studied. The influence of the line parameters on the safety of vehicle driving, and the calculation results are used to test the rules of the design parameters of the existing hump design. (5) the optimization of the design parameters of the hump line is studied from the angle of improving the vehicle performance. The evaluation index of vehicle driving stability is to optimize the design parameters of the flat longitudinal section of the hump skating area from the angle of improving the vehicle performance, and further use the genetic algorithm and BP neural network to study the line parameters matching relationship between the flat and longitudinal section of the skating area, and get the straight line between the first branch switch and the front curve of the fork. The optimum matching relation between the length and the distance between the acceleration slope and the distance of the point rail distance between the middle slope and the middle slope is two. (6) the influence of the line condition changes on the vehicle performance is studied. In the case of an example analysis, the geometric shape change of the line is studied by using the model of the performance calculation of a skating vehicle in a hump skating area with frequent derailment accidents. The relationship between the change of the vehicle skating and the safety of the vehicle and the change of the line conditions in the calculation example, the influence of the change of the rail gauge and the deformation of the longitudinal section on the vehicle performance is analyzed and studied.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2017
【分類號(hào)】：U291.43

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