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改扩建工程中央分隔带保通开口临时交通安全设施设置效果评估

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高速公路中央分隔带保通开口是改扩建工程交通安全事故高发区,针对该部位临时交通安全设施尚无统一设置标准、部分施工现场设置方式随意、组合设置效果不佳等问题,建立了中央分隔带保通开口临时交通安全设施设置效果评估模型.首先,选取路段饱和度、平均车速、车道占有率、路段行程延误和交通冲突数作为评估指标,构建了高速公路改扩建工程中央分隔带保通开口临时交通安全设施设置效果评估指标体系;其次,建立了基于改进多维有限区间云模型的中央分隔带保通开口临时交通安全设施设置效果评估模型;最后,依托安徽省宁芜高速公路改扩建项目展开工程应用,建立VISSIM交通仿真模型,获取不同临时交通安全设施设置方案下的通行安全及通行效率数据,代入评估模型进行计算并将评估结果与专家评判结果和其他三种评估方法进行比对.结果表明:该模型的评估结果与专家评判结果的一致性程度最高,应用于临时交通安全设施设置效果评估具有较强的适用性.改道标志的设置位置对中央分隔带开口处临时交通安全设施设置效果的影响最大.
Evaluation on the Setting Effect of Temporary Traffic Safety Facilities at the Median Openings in Reconstruction and Expansion Project
The median openings of expressway are high incidence area of traffic accidents in the reconstruction and expansion project.In view of the lack of unified setting standards for temporary traffic safety facilities,the random setting methods at some construction sites,and the poor combination setting effect,an evaluation model for the setting effect of temporary traffic safety facilities at the median openings is established.Firstly,road saturation,average speed,lane occupancy,travel delay and number of traffic conflicts are selected as evaluation indexes,the evaluation metric system for the setting effect of temporary traffic safety facilities are established.Secondly,an evaluation model for the setting effect of temporary traffic safety facilities at the median openings is established based on the improved multidimensional finite interval cloud model.Finally,relying on the practical application of the reconstruction and expansion project of Ning(Nanjing)-Wu(Wuhu)Expressway in Anhui Province,the VISSIM traffic simulation model is established to obtain the traffic safety and traffic efficiency metrics under different setting schemes.These data are bring into the model for calculation,and the results are compared with expert evaluation results and other three evaluation methods.The results show that the model has the highest degree of consistency with the results of expert judgement and is highly applicable to the evaluation of the effectiveness of the setting of temporary traffic safety facilities.The location of diversion signs has the greatest impact on the setting effect of temporary traffic safety facilities at the median openings.

traffic engineeringreconstruction and expansion projectmultidimensional finite interval cloud modelCRITIC methodmedian openingstemporary traffic safety facilities

潘硕、吴忠广、许杰、虞叶东、李占甫

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交通运输部科学研究院标准与计量研究中心 北京市 100029

安徽交通控股集团股份有限公司 合肥市 230093

安徽省交通规划设计研究总院股份有限公司 合肥市 230093

交通工程 改扩建工程 多维有限区间云模型 CRITIC法 中央分隔带保通开口 临时交通安全设施

安徽省交通控股集团科技项目

JKKJ-2019-02

2024

公路
中国交通建设集团有限公司

公路

CSTPCD北大核心
影响因子：0.54
ISSN：0451-0712
年,卷(期)：2024.69(4)
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