本文選題：線形設(shè)計一致性　切入點：運行速度　出處：《北京交通大學(xué)》2014年博士論文

【摘要】：公路交通事故與公路條件尤其是線形條件有著密切的聯(lián)系,科學(xué)順暢的線形、清晰醒目的行車指示、充分的視距保證和符合駕駛期望的路線是車輛行駛安全的基本保障。因此從道路線形設(shè)計一致性的方向?qū)钒踩赃M行研究,具有重要的理論和現(xiàn)實意義。 本文以大量的實地動態(tài)采集數(shù)據(jù)為基礎(chǔ),結(jié)合我國車輛的動力性能進行車型分類,對多車道公路和雙車道公路進行路段劃分,并得到各典型路段的V85的計算式和道路線形、運行速度以及交通安全三者之間的關(guān)系。 通過分析公路平、縱、橫線形指標對公路安全性的影響,提出公路線形空間描述綜合指標,采用系統(tǒng)建模方法,構(gòu)建反映公路線形空間幾何特性的函數(shù),在對各參數(shù)對線形綜合指標敏感性分析基礎(chǔ)上,建立公路線形綜合指標；根據(jù)道路線形三維空間特性,建立空間曲率指標；針對隧道進出口線形過渡特點,構(gòu)建隧道進出口線形過渡指標。 以運行速度特征為安全評價中介指標,通過分析事故率與速度特征的相關(guān)規(guī)律,提出大小型車速離散性指標、斷面車速變化指標以及綜合車速指標,采用非線性擬合方法,建立基于運行速度的大小型車速離散性指標一致性模型、斷面車速變化指標一致性模型以及綜合車速指標一致性模型。根據(jù)我國多車道公路的安全水平,提出各項指標相對應(yīng)的多車道公路線形一致性安全評價標準。 通過對雙車道公路的運行環(huán)境進行分析,對影響雙車道公路交通安全的線形、平均日交通量、路基寬度、路肩寬度、接入口密度、大型車比例和路側(cè)危險度等多因素分析,應(yīng)用統(tǒng)計學(xué)隨機模型理論,構(gòu)建雙車道公路事故預(yù)測模型,提出雙車道公路一致性標準。
[Abstract]:Road traffic accidents are closely related to highway conditions, especially the linear conditions. Scientific and smooth alignment, clear and eye-catching driving instructions, adequate visual distance guarantee and routes in line with driving expectations are the basic guarantees of vehicle driving safety.Therefore, it has important theoretical and practical significance to study highway safety from the direction of road alignment design consistency.Based on a large number of dynamic data collected in the field and combined with the dynamic performance of vehicles in China, this paper classifies the multi-lane highway and the two-lane highway, and obtains the calculation formula and road alignment of the V85 of each typical section.The relationship between running speed and traffic safety.By analyzing the influence of highway leveling, longitudinal and horizontal index on highway safety, a comprehensive index of highway alignment space description is put forward, and a function reflecting the geometric characteristics of highway alignment space is constructed by using the method of system modeling.Based on the analysis of the sensitivity of each parameter to the linear synthetic index, the synthetic index of highway alignment is established; according to the three-dimensional spatial characteristics of road alignment, the spatial curvature index is established; according to the transition characteristics of tunnel inlet and outlet alignment,The line transition index of tunnel inlet and outlet is constructed.Taking the running speed characteristic as the intermediate index of safety evaluation, by analyzing the correlation law between the accident rate and the speed characteristic, the paper puts forward the discrete index of large and small speed, the change index of cross-section speed and the comprehensive speed index, and adopts the nonlinear fitting method.The discrete index consistency model of large and small speed, the consistency model of cross-section speed change index and the integrated speed index consistency model are established based on running speed.According to the safety level of multi-lane highway in China, the evaluation criteria of alignment consistency of multi-lane highway are put forward.Through the analysis of the running environment of the two-lane highway, this paper analyzes the linear, average daily traffic volume, roadbed width, road shoulder width, entrance density, the proportion of large vehicles and the risk degree of the side of the two-lane highway, which affect the traffic safety of the two-lane highway, such as line shape, average daily traffic volume, roadbed width, road shoulder width, and so on.Based on the statistical stochastic model theory, a two-lane highway accident prediction model is constructed, and the consistency standard of two-lane highway is put forward.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：U412.3

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