复杂长大陡坡路段避险车道安全评价模型  

Safety Evaluation Model of Truck Escape Ramps in Complicated Long Steep Slope Section

作　　者：张驰[1] 张宏 闫晓敏[1] 张敏[2] ZHANG Chi;ZHANG Hong;YAN Xiao-min;ZHANG Min(Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang＇an University. Xi＇an 710064,Chian;Traffic Engineering Research Institute, School of Highway, Chang＇an University, Xi＇an 710064, China)

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,西安市710064 [2]长安大学公路学院交通工程研究所,西安市710064

出　　处：《公路》2018年第4期159-168,共10页Highway

基　　金：交通运输部应用基础研究项目,项目编号2014319812170;中国博士后科学基金,项目编号2016M590915;“十二五”国家科技支撑计划项目,项目编号2014BAG05B01;中央高校基本科研业务费专项资金项目,项目编号310821172201&310821172002;陕西省自然科学基础研究计划,项目编号S2017-ZRJJ-MS-0603

摘　　要：为评价避险车道的安全性,根据避险车道的设置参数,选取引道长度、流出角、视距条件、制动床长度、坡度、集料类型、集料深度等11个指标,基于集值统计法思想确定了各评价指标的标度分级与权重,提出了避险车道安全评价模型,并给出了避险车道整体安全性的5个等级与相应的安全控制措施。依托西南山区某高速公路的4个避险车道设计,对模型进行了应用说明,结果表明：4个避险车道的识别视距、引道长度差值、流出角三方面存在较大的安全隐患,整体安全值分别为1.415、1.722、0.607、1.231,安全等级均为Ⅳ级,轻度不安全。该模型与实际相符,模型评价全面详细,应用方便,科学合理。In order to evaluate the safety of the truck escape ramp, 11 indexes such as length, outflow angle, line-of-sight condition, brake bed length, slope, aggregate type and aggregate depth are selected according to the setting parameters of the truck escape ramp. Based on the idea of set -value statistics, the scale and weight of each evaluation index are determined, and the safety evaluation model of the truck escape ramp Is put mountainous area, forward. Based on the four truck escape ramp design of a highway in the southwest the five levels of the overall safety of the truck escape ramp and the corresponding safety control measures are given, and the model is applied. The results show that there are higher safety risks in the three aspects of the identification of the horizon, the difference in the length of the approach and the outflow angle of the four truck escape ramp. The overall safety values are respectively 1. 415, 1.722, 0.607, and 1.231, the safety level are Ⅳ , moderate level insecurity. The model is consistent with the actual situations, which is proved as comprehensive, detailed, convenient, scientific and reasonable.

关 键 词：道路工程 长大下坡 避险车道 安全评价 集值统计 

分 类 号：U491.223[交通运输工程—交通运输规划与管理] X913.4[交通运输工程—道路与铁道工程]