本文選題：高速公路 + 立交單車道出入口　； 參考：《長安大學(xué)》2017年碩士論文

【摘要】：近年來,隨著我國高速公路里程不斷增加,架設(shè)在高速公路上的互通立交數(shù)量驟增,與此同時高速公路互通立交處交通安全問題也日益嚴(yán)重,高速公路互通立交出入口在設(shè)計階段及運營期存有大量安全隱患。我國現(xiàn)有《公路項目安全性評價規(guī)范》中采用車輛運行速度進(jìn)行安全性評價取得了較好的效果,但該規(guī)范并未對高速公路互通立交出入口車輛運行速度進(jìn)行相關(guān)規(guī)定,對此開展高速公路互通立交出入口運行速度研究勢在必行。論文以四川某高速公路互通立交主線范圍內(nèi)交通事故進(jìn)行分析的基礎(chǔ)上,得出在高速公路互通立交出入口范圍內(nèi)交通事故數(shù)量明顯高于高速公路主線基本路段及立交出口事故數(shù)量高于立交入口的結(jié)論,通過對互通立交出入口交通事故類型進(jìn)行統(tǒng)計分析,追尾型事故占有率較大,并從安全角度出發(fā),確定本文研究區(qū)域為高速公路互通立交出入口,綜合考慮了主線及變速車道行駛特征,確定車輛運行速度的影響因素。論文主要是對高速公路互通立交單車道出入口小客車運行速度及加速度進(jìn)行分析研究。對高速公路互通立交出入口以漸變段起點及合流鼻開始,每隔10m提取一組速度數(shù)據(jù),最終對每個記錄點運行速度信息進(jìn)行SPSS統(tǒng)計分析、匯總,并運用行車動力學(xué)仿真軟件CARSIM進(jìn)行縱向加速度仿真分析,確定將高速公路互通立交出入口分為漸變段、減速段及三角區(qū)段、加速換道段。論文以自由流狀態(tài)下小客車為研究對象,利用鏈?zhǔn)嚼走_(dá)獲取12座高速公路互通立交出口及12座高速公路互通立交入口處小客車實時行駛數(shù)據(jù),分別經(jīng)過小客車行駛速度描述性統(tǒng)計、特征點運行速度計算、殘差獨立性檢驗、共線性診斷分析、回歸系數(shù)分析及自變量參數(shù)間關(guān)系檢驗,建立了高速公路立交單車道出入口小客車運行速度預(yù)測模型,通過對4座立交出口及4座立交入口進(jìn)行相對誤差平均值驗算,模型精度可滿足要求。本文對高速公路互通立交單車道出入口小客車運行速度預(yù)測模型的研究,有助于完善現(xiàn)有對立交出入口運行速度的規(guī)定,保障高速公路互通立交出入口的行車通暢及駕駛?cè)松敭a(chǎn)。
[Abstract]:In recent years, with the increasing mileage of freeway in our country, the number of interchanges installed on freeway has increased sharply, and at the same time, the traffic safety problem of expressway interchange is becoming more and more serious. There are a lot of hidden dangers in the design and operation period of expressway interchange entrance and exit. The safety evaluation of highway project in our country has achieved good results by using vehicle running speed, but this code has not made relevant regulations on the speed of vehicle running at the freeway interchange entrance and exit. Therefore, it is imperative to study the operating speed of expressway interchange entrance and exit. Based on the analysis of traffic accidents in the main line of a highway interchange in Sichuan, It is concluded that the number of traffic accidents in the expressway interchange entrance range is significantly higher than that in the main highway main line and the interchange exit accident number is higher than that at the interchange entrance. Through the statistical analysis of the traffic accident types at the interchanges and exits, the rear-end traffic accidents occupy a large share, and from the point of view of safety, the study area of this paper is determined as the freeway interchange entrance and exit. The driving characteristics of main line and variable speed lane are considered synthetically to determine the influencing factors of vehicle running speed. In this paper, the speed and acceleration of a single-lane bus at the freeway interchange are analyzed and studied. A group of velocity data is extracted every 10 m from the starting point of the gradual change section and the confluent nose at the entrance of the expressway interchange. Finally, the running speed information of each record point is statistically analyzed and summarized by SPSS. The longitudinal acceleration simulation analysis is carried out by using the simulation software of driving dynamics, CARSIM, and it is determined that the expressway interchange entrance and exit are divided into gradually changing section, decelerating section and trigonometric section, and accelerating the changing section. In this paper, taking the passenger cars in the free flow state as the research object, the real-time driving data of 12 freeway interchange exits and 12 freeway interchange entrances are obtained by using chain radar. After the descriptive statistics of the passenger car speed, the calculation of the running speed of the characteristic point, the independence test of the residual error, the analysis of the collinear diagnosis, the analysis of the regression coefficient and the test of the relationship between the parameters of the independent variables, A prediction model of the running speed of the passenger cars at the single lane entrance of the expressway interchange is established. By checking the relative error average value of the four interchanges and the four interchanges, the accuracy of the model can meet the requirements. In this paper, the research on the prediction model of the running speed of the single lane passenger car at the freeway interchange is helpful to improve the existing regulations on the running speed of the interchange entrance and exit. To ensure the smooth operation of the expressway interchange and the life and property of the driver.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U412.352.1;U491

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本文編號：1882020