本文選題：多車道高速公路 + 分流區(qū)��； 參考：《東南大學》2015年碩士論文

【摘要】：對貨車的影響效應研究,可以在現(xiàn)有的道路條件下,最大程度上的保障高速公路運輸系統(tǒng)的運營效率。同時,深入揭示多車道高速公路分流區(qū)瓶頸的形成機理,能夠?qū)霸珙A報交通堵塞的形成,預防重大交通事故的發(fā)生起到積極的作用。論文對比國內(nèi)外工程規(guī)范標準并借鑒國內(nèi)外相關(guān)文獻的研究成果,對車種車型進行劃分,總結(jié)分流區(qū)的類型與幾何特征,明確研究對象的空間范圍。利用實地調(diào)查數(shù)據(jù)研究分流區(qū)的交通組成、交通量時變特性、車道分布、速度特性、車頭時距等,為后續(xù)的分析及計算奠定基礎。從分流區(qū)車輛運行的一般規(guī)律入手,根據(jù)車輛在不同路段的行駛特征對分流區(qū)進行分段分析,在此基礎上研究貨車對于交通流的影響。由于不同的交通密度以及貨車比例下,貨車的影響規(guī)律并不相同,因此針對貨車作為移動瓶頸獨立與不獨立的情況進行理論分析,從“移動瓶頸”形成的內(nèi)因、外因角度出發(fā),研究分流區(qū)車輛超車、變換車道等行為,對移動瓶頸的形成機理、擁堵演化機制和主要影響因素進行分析,得到分流區(qū)貨車的影響機理。受實地調(diào)查的限制,需要利用仿真手段研究不同交通條件下的影響規(guī)律。對仿真軟件跟馳與變車道模型進行分析,并通過實地調(diào)查得到的數(shù)據(jù),采用正交實驗法,對模型參數(shù)進行校正,為仿真分析奠定基礎。從效率與安全兩個方面,對分流區(qū)貨車影響進行評價。傳統(tǒng)的安全指標并不能很好的反應分流區(qū)的安全性,以傳統(tǒng)速度差指標為基礎,選取改進的速度一致性指標,并通過建立其與交通沖突率之間的關(guān)系,驗證新指標的合理性。在不同交通量水平下,研究不同分流比例、貨車比例對分流區(qū)效率與安全的影響,并根據(jù)該一般規(guī)律,提出分流區(qū)安全改善措施。
[Abstract]:The research on the effect of freight cars can ensure the operation efficiency of expressway transportation system to the maximum extent under the existing road conditions. At the same time, revealing the forming mechanism of the bottleneck in the diverging area of multi-lane expressway can play a positive role in early forecasting the formation of traffic jam and preventing the occurrence of major traffic accident. This paper contrasts the domestic and foreign engineering code standards and draws lessons from the research results of relevant literature at home and abroad, classifies the vehicle types, summarizes the types and geometric characteristics of the distributary zone, and clarifies the spatial range of the research objects. The traffic composition, the time-varying traffic volume, the lane distribution, the velocity characteristics and the headway time interval of the traffic diversion area are studied by using the field survey data, which lays a foundation for the subsequent analysis and calculation. Starting with the general rules of vehicle running in the distributary area, this paper analyzes the segmental analysis of the distributary zone according to the driving characteristics of different sections of the vehicle, and then studies the influence of freight cars on the traffic flow. Because of the different traffic density and freight car ratio, the influence law of freight car is not the same, so the paper makes a theoretical analysis on the situation that the truck is independent or not independent as the moving bottleneck, starting from the angle of internal cause and external cause of the formation of "moving bottleneck". The behavior of vehicle overtaking and lane changing in shunt area is studied. The forming mechanism of moving bottleneck, the mechanism of congestion evolution and the main influencing factors are analyzed, and the influence mechanism of freight car in shunt area is obtained. Due to the limitation of field investigation, it is necessary to study the influence law under different traffic conditions by means of simulation. The simulation software car-following and variable lane model are analyzed, and the data obtained from the field investigation are used to correct the model parameters by orthogonal experiment, which lays a foundation for simulation analysis. From the efficiency and safety aspects, the impact of the distribution area truck was evaluated. The traditional safety index can not well reflect the safety of the diversion zone. Based on the traditional velocity difference index, the improved speed consistency index is selected, and the rationality of the new index is verified by establishing the relationship between the speed consistency index and the traffic conflict rate. Under different traffic flow levels, the effects of different diffluence ratio and freight car proportion on the efficiency and safety of the distributary zone are studied. According to the general law, the measures to improve the safety of the distributary zone are put forward.
【學位授予單位】：東南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U491

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本文編號：1978151