[1]张 娟,朱文强,陈 君,等. 基于车速的公路连续长坡路段纵断面安全性研究[J].西安建筑科技大学学报(自然科学版),2016,48(04):529-534.[doi:10.15986/j.1006-7930.2016.04. 012]
　ZHANG Juan,ZHU Wenqiang,CHEN Jun,et al. Safety research of the longitudinal alignment of long and steep slope based on the velocity of vehicle [J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2016,48(04):529-534.[doi:10.15986/j.1006-7930.2016.04. 012]
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 基于车速的公路连续长坡路段纵断面安全性研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年04期
页码:
529-534
栏目:
出版日期:
2016-08-31

文章信息/Info

Title:
 Safety research of the longitudinal alignment of long and steep slope based on the velocity of vehicle
文章编号:
1006-7930(2016)04-0529-06
作者:
 张 娟; 朱文强;  陈 君;  马 兰
( 西安建筑科技大学土木工程学院，陕西 西安，710055)
Author(s):
 ZHANG Juan;  ZHU Wenqiang;  CHEN Jun ;  MA Lan
 (School of Civil Engineering , Xi′an University of Architecture and Technology , Xi′an 710055,China )
关键词:
 ; 公路连续长坡路段; 坡度; 坡长; 竖曲线半径; 速度增长率
Keywords:
 ; long and steep slope;  slope;  slope length;  longitudinal radius;  speed increase rate
分类号:
U491
DOI:
10.15986/j.1006-7930.2016.04. 012
文献标志码:
A
摘要:
 为研究公路连续长坡路段纵断面与运行车速之间的关系，选择9名驾驶人进行实际道路实车试验．用动态GPS采集试验车辆的实时车速数据，分别得到上、下坡方向的85%车速，速度的表征参数选用速度增长率（车速的均值相对于85%车速的增长率，用表示），依次研究公路连续长坡路段纵断面要素与速度增长率之间的关系．研究结果表明：驾驶人对下坡方向坡度的敏感性较弱，坡度对车速的影响较小；速度增长率和缓坡坡长存在三次函数关系，但上坡方向的速度增长率随缓坡坡长的增长而波动较大，下坡方向起伏相对平缓；速度增长率和陡坡坡长亦存在三次函数关系，上坡方向坡长在400 m附近时，对安全行车较有利；下坡方向坡长在550 m附近时，对安全行车较有利；较利于公路连续长坡路段安全行车的竖曲线半径取值范围为900~950 m．
Abstract:
 In order to research the relationship between longitudinal alignment with the operating velocity in accordance with uphill direction and downhill direction, nine drivers were selected randomly as pilots of the actual road experiment. GPS was used to collect the vehicle’s real time velocity. According to the cumulative frequency distribution curve of velocity, 85% velocity of uphill direction and downhill direction could be calculated. The growth rate of all drivers’ 85% operating velocity relative to the 85% velocity was selected as the velocity parameters. The research results are as follows: With the downhill direction, driver’s sensitivity to slope was weak, the slope has little influence on velocity. Velocity growth rate and the length of gentle slope has three curve relation, Velocity growth rate has a great fluctuation with the growth of slope length with the uphill direction, and with the downhill direction,it has gentle fluctuation. Velocity growth rate and the length of steep slope also has a three curve relation.While 400 meters length of slope is more favorable for driving safety with uphill direction, 550 meters length of slope is more conducive to driving safety with downhill direction.Vertical curve radius in 900-950 meters is more beneficial to driving safety.

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备注/Memo

备注/Memo:
收稿日期：2015-10-08 修改稿日期：2016-08-22
基金项目：国家自然科学基金青年科学基金（51308449）; 陕西省教育厅专项科研计划项目（2013JK0955）
作者简介：张娟（1978?），女，讲师，博士，主要研究方向：道路交通安全．Email：sayibing@126.com
更新日期/Last Update: 2016-10-30