[1]WANG Lei,YU Gongxin,WANG Chaohui,等.Determining thresholds of traffic volume and skid resistance to reduce pavement’s wet accident ratio[J].长安大学学报(自然科学版),2019,39(05):106-114.
　,,et al.面向降低路面湿滑事故率的交通量与抗滑阈值确定（英文）[J].Journal of Chang’an University (Natural Science Edition),2019,39(05):106-114.
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Determining thresholds of traffic volume and skid resistance to reduce pavement’s wet accident ratio()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第39卷
期数:
2019年05期
页码:
106-114
栏目:
交通工程
出版日期:
2019-09-15

文章信息/Info

Title:
面向降低路面湿滑事故率的交通量与抗滑阈值确定（英文）
作者:
WANG Lei;  YU Gongxin;  WANG Chaohui;  YANG Guolin;  YAN Zhaobai
(1. Magazines Office, Chang’an University, Xi’an 710064, Shaanxi, China; 2. School of Highway, Chang’an University, Xi’an 710064, Shaanxi, China; 3. China Merchants Expressway Network & Technology Holdings Co., Ltd., Beijing 100022, China; 4. Zhejiang Wenzhou Yongtaiwen Expressway Co., Ltd., Wenzhou 325000, Zhejiang, China）
Author(s):
王 磊; 余功新; 王朝辉; 杨国林; 闫兆柏
（1. 长安大学 杂志社，陕西 西安 710064； 2. 长安大学 公路学院，陕西 西安 710064； 3. 招商局公路网络科技控股股份有限公司，北京 100022； 4. 浙江温州甬台温高速公路有限公司，浙江 温州 325000）
关键词:
road engineering;  wet pavement accident ratio;  skid number;  sideway force coefficient;  annual average daily traffic;  thresholds values
Keywords:
道路工程; 路面湿滑事故率; 抗滑值; 横向力系数; 年均日交通量; 阈值
文献标志码:
A
摘要:
Amid at current research on wet pavement accidents primarily focused on the qualitative or simple quantitative effects of skid resistance and traffic volume, however, recommended values of skid resistance and traffic volume have not been explicitly proposed. As a result, the potential safety hazard of vehicles on wet and slippery roads was higher, and threat to traffic safety. To analyze the impact of these two main factors on wet pavement accidents and to reduce the frequency of accidents on rainy days, firstly, the wet accident ratio (WAR) was determined. Then, the influence of the pavement’s skid resistance under different traffic grades, using statistical principles and analysis methods, as well as the traffic volume under different skid resistance grades on the WAR, were analyzed by MATLAB. Three regression models for the annual average daily traffic (AADT), skid number (SN), and sideway force coefficient (SFC) on the WAR were established. The effects of the AADT, SN, and SFC on the WAR were analyzed quantitatively with those models. Finally, the coupling effect of skid resistance and traffic volume was considered, and the thresholds of the two factors were determined to ensure highway safety. The results show that the threshold of the AADT ranges from 6 500 to 15 000, and the ranges of the skid resistance number and wet accident ratio are 27 to 53 and 0.529 to 11.930, respectively. To achieve the zeroaccident goal, the maintenance value of the skid resistance should be improved to 52 when traffic is heavy, to ensure driving safety in rainy days. The recommended thresholds have an important role in defining the optimum time for the skid resistance maintenance of asphalt pavement, which can also lay a foundation for establishing a more effective preventive maintenance system for highways. 4 tabs, 8 figs, 18 refs.
Abstract:
针对目前关于路面抗滑性能与交通量和湿滑事故的相关性主要为定性或简单定量研究，未提出明确的抗滑值与交通量推荐值，导致雨天湿滑路面对道路行车安全造成较大隐患，严重威胁交通安全，为分析抗滑性与交通量2个主要影响因素对湿滑路面事故的影响，解决雨天湿滑导致事故频发这一问题，首先，定义路面湿滑事故率（WAR）；然后，运用统计学原理及分析方法，借助MATLAB分别分析不同交通量等级下路面抗滑性能或不同路面抗滑等级下交通量对路面湿滑事故率的影响，分别建立年均日交通量（AADT）、路面抗滑值（SN）、路面横向力系数（SFC）与路面湿滑事故率的3种回归模型，定量分析交通量、路面抗滑值、路面横向力系数对路面湿滑事故率的影响；最后综合分析了抗滑值和交通量的耦合效应，并基于道路行车安全，推荐了两者阈值。研究结果表明：年平均日交通量阈值为6 500~15 000，抗滑值、湿滑事故率范围分别为27~53、0.529~11.930；为实现零事故目标，在重交通路段应将抗滑值提高到52，以保证雨天行车安全。该推荐阈值为控制交通量或路面抗滑性能以减小路面湿滑事故率提供了参考，同时明确了沥青路面抗滑养护最佳时机，为建立更完善的公路预防性养护体系奠定了基础。
更新日期/Last Update: 2019-10-16