本文關鍵詞： 交通工程 山區(qū)高速公路 橋隧密集路段 交通流特性 速度 車頭時距　出處：《鐵道科學與工程學報》2017年04期 　論文類型：期刊論文

【摘要】：為了研究山區(qū)高速公路橋隧密集路段的交通流特性,從隧道明暗適應、環(huán)境照度、環(huán)境噪聲、空氣質量及車輛行駛特性5個方面分析橋隧密集路段的交通環(huán)境特點,制定雷達定位測速實驗方案,結合橋隧密集路段的交通監(jiān)控視頻資料,從速度和車頭時距2個方面分別進行研究。采用圖表分析法和綜合對比分析方法,得到山區(qū)高速公路橋隧密集路段的速度和車頭時距分布特征。研究結果表明:橋隧密集路段的85%位車速均在90~98 km/h之間,15%位車速均在45~67 km/h之間;橋梁與橋梁連接處的85%位車速最高,長隧道入口處的85%位車速最低;50%以上車頭時距在0~10 s以內,85%的車頭時距大約在25 s以下;長隧道入口處的車頭時距均值最小,長隧道中間位置處的車頭時距均值最大。
[Abstract]:In order to study the traffic flow characteristics of dense sections of highway in mountainous area, the traffic environmental characteristics of dense sections of bridges and tunnels are analyzed from five aspects: tunnel adaptation, environmental illumination, environmental noise, air quality and vehicle driving characteristics. In this paper, the experimental scheme of radar positioning and velocity measurement is worked out. Combined with the traffic surveillance video data of dense sections of bridge and tunnel, two aspects of speed and head-length are studied separately, and the methods of chart analysis and comprehensive contrast analysis are used. The characteristics of speed and headway time distribution of dense section of highway in mountainous area are obtained. The results show that the speed of 85% position in the dense section of bridge and tunnel is between 90 ~ 98 km/h and 15% of the vehicle speed is in the range of 4567 km/h; At the junction of the bridge and the bridge, the speed of 85% is the highest, and at the entrance of the long tunnel, the lowest speed is more than 50% or more than 50% of the headway, and the headway of the long tunnel entrance is the smallest, with the headway distance of 85% or less within 10 seconds, and the average length of the front distance at the entrance of the long tunnel is the smallest. In the middle of the long tunnel, the average time distance of the vehicle front is the largest.
【作者單位】： 長安大學公路學院;特殊地區(qū)公路工程教育部重點實驗室;林同h旯使こ套裳，

本文編號：1531429