本文關(guān)鍵詞： 山區(qū)四級公路 連續(xù)彎道 行駛軌跡 相關(guān)性分析　出處：《福建農(nóng)林大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來,隨著經(jīng)濟的快速增長和人民生活水平的不斷提高,汽車已經(jīng)進入尋常百姓的日常生活中,帶給人們方便的同時也帶來了交通事故數(shù)的迅速增長。相關(guān)研究表明,彎道路段尤其是連續(xù)彎道的事故數(shù)明顯比平直路段的要大,并且惡性事故的嚴重程度也更加明顯。連續(xù)彎道又是山區(qū)低等級公路中的常見線形,不同類型車輛駛過連續(xù)彎道的車輛行駛軌跡會存在較大差異。然而,目前我國對低等級公路連續(xù)彎道行駛軌跡的研究較少,因此本文對車輛行駛軌跡的變化規(guī)律進行研究。首先,應(yīng)用實地調(diào)查法,分析在研究連續(xù)彎道的過程中如何采集所需的車輛行駛軌跡以及交通參數(shù),可以有效避免因人為干擾因素影響車輛的行駛軌跡。其次,確定研究因素和設(shè)計實驗方案。對山區(qū)四級公路不同同向連續(xù)彎道路段下的車輛運行速度、車型、行駛方向和車輛行駛軌跡點的分布情況等數(shù)據(jù)進行采集與分析。同時對車型、行駛方向和連續(xù)彎道的分段進行分類與標(biāo)定。再次,采用直觀分析方法,研究不同影響因素下小型車、中型車和大型車的行駛軌跡的變化規(guī)律以及越過道路中線的比例;采用相關(guān)性分析方法,研究不同影響因素下各類型車輛行駛軌跡點與道路中線之間的相關(guān)程度。研究結(jié)果表明:(1)不同類型車輛在上下行運行方向下的車輛行駛軌跡越過道路中線行駛的比例有所差異,各車型在上行方向上的越線比例明顯大于下行方向;(2)不同類型車輛行駛軌跡與連續(xù)彎道道路中線之間的相關(guān)性程度較大,各車型在下行方向的行駛軌跡線與道路中線的相關(guān)性程度均大于上行方向;(3)各類型車輛在上下行運行方向上所形成的沖突區(qū)域大小不同,在上行方向為中型車時,下行方向為小型車所形成的沖突區(qū)域最大;在上行方向為小型車時,下行方向為小型車所形成的沖突區(qū)域最大;在上行方向為大型車時,下行方向為小型車所形成的沖突區(qū)域最大。最后,基于試驗數(shù)據(jù)的分析和車輛通過彎道時的行駛軌跡特性,建立了車輛行駛軌跡點的擬合關(guān)系模型與連續(xù)彎道道路中線的擬合關(guān)系模型。
[Abstract]:In recent years, with the rapid growth of the economy and the continuous improvement of people's living standards, cars have entered the daily life of ordinary people. At the same time, it brings the rapid growth of traffic accidents. Related studies show that the number of accidents in curved sections, especially in continuous bends, is obviously larger than that in straight sections. And the serious degree of the malignant accident is more obvious. Continuous curve is also the common alignment in the low grade highway in the mountain area. The different types of vehicles driving through the continuous curve will have great differences. However. At present, there is little research on the continuous curve track of low grade highway in our country, so this paper studies the changing law of the vehicle track. Firstly, the field investigation method is applied. Analysis of how to collect the required vehicle trajectory and traffic parameters during the study of continuous curve can effectively avoid the impact of human interference factors on the vehicle trajectory. Secondly. To determine the research factors and design experimental scheme. For the four grade mountain highway under the different converse continuous bend section of the vehicle running speed, vehicle model. At the same time, the classification and calibration of vehicle model, driving direction and continuous curve are carried out. Thirdly, the intuitive analysis method is used. The change rule of the track of small car, medium car and large vehicle and the proportion of crossing the middle line of the road are studied under different influence factors. Correlation analysis was used. The correlation between different types of vehicle track points and the middle line of the road was studied under different influence factors. Different types of vehicles in the upward and downward direction of the movement of vehicles across the middle of the road track of the proportion of different. The ratio of the overstepping line in the uplink direction of each vehicle model is obviously larger than that in the downlink direction; (2) the degree of correlation between different types of vehicles and the center line of continuous curve road is greater, and the correlation degree between the track line of each type of vehicle in the downlink direction and the middle line of the road is higher than that of the upward direction; (3) the size of conflict area of each type of vehicle is different in the up-down direction. When the uplink direction is medium, the downlink direction is the biggest conflict area formed by small vehicle. When the uplink direction is a small car, the downward direction is the biggest conflict area formed by the small car; When the uplink direction is a large vehicle, the downward direction is the largest conflict area formed by a small car. Finally, based on the analysis of the test data and the characteristics of the vehicle running through the bend. The fitting relation model of vehicle track point and the middle line of continuous bend road is established.
【學(xué)位授予單位】：福建農(nóng)林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U491

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