Journal of Highway and Transportation Research and Development最新文献_第9页

Deviation Detection and Comparison Analysis of the Joints of Cement Pavements 水泥路面接缝偏差检测及对比分析

Journal of Highway and Transportation Research and Development Pub Date : 2018-03-01 DOI: 10.1061/JHTRCQ.0000606

Jian Chen, Liang Xinkai, Peng Peng, D. Feng

引用次数: 0

Construction of Driving Conditions of Harbin Urban Passenger Cars 哈尔滨市城市客车行驶工况建设

Journal of Highway and Transportation Research and Development Pub Date : 2018-03-01 DOI: 10.1061/JHTRCQ.0000614

Dian-yu Zheng, Xiaogang Wu, Chen Han, Jiuyu Du

{"title":"Construction of Driving Conditions of Harbin Urban Passenger Cars","authors":"Dian-yu Zheng, Xiaogang Wu, Chen Han, Jiuyu Du","doi":"10.1061/JHTRCQ.0000614","DOIUrl":"https://doi.org/10.1061/JHTRCQ.0000614","url":null,"abstract":"This study mainly discusses the construction of the driving cycle within passenger cars in representative districts in Harbin, China. It conducts a comparative analysis of the New European Driving Cycle (NEDC) and Japan 10-15. This study selects passenger cars in Harbin as study objects and uses GPS to analyze the data of their driving cycle and divide the collected data curves into several short segments. Then, 11 of the most representative parameters are identified to reduce and classify data by conducting principal component analysis and cluster analysis. The relative coefficient is used to extract representative driving segments. The analysis shows that the average speed of passenger cars in Harbin is approximately 15 km/h, which is lower than the conditions set in NEDC and Japan 10-15, with acceleration and deceleration speed parameters at 33.57% and 29.70%, respectively, but higher than the relative parameters in NEDC and Japan 10-15. Comparative results of characteristic parameters show that existing road parameter conditions in Europe and Japan evidently differ from those in Harbin. Driving conditions based on running data can accurately reflect local operating characteristics. This study can serve as an important reference for the design optimization, matching calculation, and control strategy optimization of new energy automobile power systems.","PeriodicalId":288169,"journal":{"name":"Journal of Highway and Transportation Research and Development","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121727126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Numerical Simulation of Geogrid-Reinforced Flexible Support for Treating Expansive Soil Cut Slopes 土工格栅加筋柔性支护处理膨胀土路堑边坡的数值模拟

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-25 DOI: 10.1061/JHTRCQ.0000592

Jie Xiao, Hai-peng Liu, He-ping Yang

{"title":"Numerical Simulation of Geogrid-Reinforced Flexible Support for Treating Expansive Soil Cut Slopes","authors":"Jie Xiao, Hai-peng Liu, He-ping Yang","doi":"10.1061/JHTRCQ.0000592","DOIUrl":"https://doi.org/10.1061/JHTRCQ.0000592","url":null,"abstract":"The influence of various interface strength parameters, different reinforcement spacing, and type of slope (enveloped or not) with a geogrid on flexible-support-reinforced expansive soil cut slopes was investigated by numerical simulation. The simulation considered the attenuation of the shear strength of expansive soil due to rainfall, evaporation, and other long-term atmospheric weathering actions in combination with shear strength parameters determined by a laboratory-measured expansive soil nonlinear strength envelope. Results showed that the geogrid can effectively restrain horizontal slope displacement and decrease the soil expansion softening effect to a certain extent, such that the sliding surface of the slope became deep. The change in maximum axial force was small due to a change in interface strength parameters between the geogrid and soil, but the safety factor increased with the increase in maximum axial force. The changes in maximum axial force along the height for different geogrid reinforcement spacing values were basically similar; the values increased initially and then decreased. Small reinforcement spacing equated to a small maximum value. The stability of the expansive soil slope was significantly influenced by reinforcement spacing; small spacing meant good slope stability. The enveloped geogrid indirectly improved the safety, resistance to erosion, and integrity of the slope.","PeriodicalId":288169,"journal":{"name":"Journal of Highway and Transportation Research and Development","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127916193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Analysis of the Joint Sealing Materials for the Cement Concrete Pavements in Civil Airports 民用机场水泥混凝土路面接缝密封材料性能分析

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-01 DOI: 10.1061/JHTRCQ.0000589

Xianya Wang, Wei Li, J. Yuan

{"title":"Performance Analysis of the Joint Sealing Materials for the Cement Concrete Pavements in Civil Airports","authors":"Xianya Wang, Wei Li, J. Yuan","doi":"10.1061/JHTRCQ.0000589","DOIUrl":"https://doi.org/10.1061/JHTRCQ.0000589","url":null,"abstract":"Cement concrete pavements in airfields need to be sealed with all kinds of sealants to prevent the ingress of water or incompressible materials into their joints. Airfield cement concrete pavements have unique in-service conditions, and the sealants in these environments are not only exposed to climatic effects and heavy traffic loads but also to jet fuel and fluids. By analyzing the causes of damage and selecting four types of typical joint sealing materials for cement concrete pavements in civil airports (e.g., silicone, polyurethane, polysulfide, and polythiourethane), the basic physical properties, adhesion, and resistance of these materials are tested. By combining the experimental results with the relevant technical specifications and standards at home and abroad, these materials are divided into high elastic modulus and low elastic modulus based on 23℃ tensile modulus. The surface drying time, cone penetration, elastic recovery rate, tensile modulus, low temperature tensile elongation, tensile bond, fuel immersion characteristics, resistance to heat ageing, and flame resistant properties of these materials are used as performance indices and provide a technical reference for the construction of airport cement concrete pavements.","PeriodicalId":288169,"journal":{"name":"Journal of Highway and Transportation Research and Development","volume":"262 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121701199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Dynamic Stability Control Criterion for an Asphalt Surface Course under Different Traffic Volumes 不同车流量下沥青路面动态稳定性控制准则

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-01 DOI: 10.1061/JHTRCQ.0000590

Yu Gao, Zhi-huai Li, H. Guan

{"title":"Dynamic Stability Control Criterion for an Asphalt Surface Course under Different Traffic Volumes","authors":"Yu Gao, Zhi-huai Li, H. Guan","doi":"10.1061/JHTRCQ.0000590","DOIUrl":"https://doi.org/10.1061/JHTRCQ.0000590","url":null,"abstract":"To control the rutting resistance of a semi-rigid-base asphalt pavement under different traffic volumes, a rutting test is conducted to simulate the actual pavement internal temperature field on full-depth asphalt surface course samples excavated from different sections (different corresponding traffic volumes) and rutting depths in an expressway reconstruction and extension project. The relationship between dynamic stability and rutting depth on the main lane is analyzed. The dynamic stability control criteria, which are dynamic stabilities corresponding to 15 mm rut depth, to fit the traffic volumes of different sections are determined. The accumulative equivalent axles of different sections are collected and calculated. The relationship between the dynamic stability control criterion of each section and its accumulative equivalent axle is analyzed to obtain a fitting equation. A dynamic stability control criterion for the asphalt pavement structure at heavy traffic level is suggested based on this fitting equation. Afterward, a method of determining the dynamic stability control criterion for the entire asphalt surface course under different traffic volumes is recommended.","PeriodicalId":288169,"journal":{"name":"Journal of Highway and Transportation Research and Development","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124593299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on a Calculation Method for Free Cable Alignment in Self-Anchored Suspension Bridges 自锚式悬索桥自由索对中计算方法研究

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-01 DOI: 10.1061/jhtrcq.0000596

Jia Wei

引用次数: 0

Study on a Parameter Determination and Calculation Method for the Stress Loss of Prestressed CFRP Plates in Bridge Reinforcemen 桥梁加固中预应力CFRP板应力损失参数确定及计算方法研究

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-01 DOI: 10.1061/JHTRCQ.0000595

Qiao Huang, S. Wan, Yushi Shan, Xu Hou

引用次数: 0

Expressway Merge Assistance Method and Evaluation Based on Connected Vehicle Technology 基于车联网技术的高速公路合流辅助方法及评价

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-01 DOI: 10.1061/JHTRCQ.0000600

Dongzhu Wang, Yanyan Chen, Jianming Ma, C. Walton

{"title":"Expressway Merge Assistance Method and Evaluation Based on Connected Vehicle Technology","authors":"Dongzhu Wang, Yanyan Chen, Jianming Ma, C. Walton","doi":"10.1061/JHTRCQ.0000600","DOIUrl":"https://doi.org/10.1061/JHTRCQ.0000600","url":null,"abstract":"Merge points on expressways are areas where a high number of accidents occur, and the connected vehicle technology is an effective means to improve the safety of these areas. In this study, a novel vehicle coordinated control method is proposed to reduce the occurrence of security conflicts and congestion by providing early warning to the driver to adjust driving behavior. Vehicle conflicts are calculated and predicted based on the position and speed of vehicles that are located within the range of the communication by connected vehicle technology. First, the safety hazard of the merge area is analyzed. Second, the time range of the ramp truck to reach the merge area is calculated according to the characteristics of the truck. The speed range in which main road vehicles can reach the merge area is calculated using the same time range as that in the ramp vehicle. The optimal main road vehicle speed is recommended in the area to avoid possible conflicts in terms of safety and efficiency. Finally, the communication module of the system is developed using Vissim simulation software, and the effect of safety coordinated control is evaluated in terms of safety and traffic efficiency.","PeriodicalId":288169,"journal":{"name":"Journal of Highway and Transportation Research and Development","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134221256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the Vulnerability of a City Agglomeration Compound Traffic Network Based on Two Attack Strategies 基于两种攻击策略的城市群复合交通网络脆弱性研究

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-01 DOI: 10.1061/JHTRCQ.0000598

C. Li, Zhen-yu Liu, Xiao-yu Liu, Xiao-yan Yang, M. Jian

{"title":"Research on the Vulnerability of a City Agglomeration Compound Traffic Network Based on Two Attack Strategies","authors":"C. Li, Zhen-yu Liu, Xiao-yu Liu, Xiao-yan Yang, M. Jian","doi":"10.1061/JHTRCQ.0000598","DOIUrl":"https://doi.org/10.1061/JHTRCQ.0000598","url":null,"abstract":"To improve the ability of city agglomeration to resist emergency disruption, the model of a city agglomeration compound traffic network was constructed with a new perspective on investigating its vulnerability. First, on the basis of complex network theory, the city agglomeration compound traffic network structure was analyzed thoroughly and its model was established using the site mapping method. Then, facing the compound traffic network structure of urban agglomeration, both the different attack strategies and the measures of the vulnerability of a city agglomeration compound traffic network were proposed. Finally, taking Hohhot-Baotou-Erdos city agglomeration as an example of our empirical study, the city agglomeration road network and rail transit network were formed, and the topology characteristics and vulnerability of the compound traffic network were analyzed to identify critical sites and lines within the network. Results show that the construction of urban agglomeration compound traffic network can effectively reduce the vulnerability of a single-mode network. Moreover, strengthening the protection of the identified key sites and lines further increases the likelihood of reducing the vulnerability of urban complex transportation networks and the risks of traffic network paralysis caused by sudden disasters.","PeriodicalId":288169,"journal":{"name":"Journal of Highway and Transportation Research and Development","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128176772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improved GPSR-SD Routing Protocol for VANET 改进的GPSR-SD VANET路由协议

Journal of Highway and Transportation Research and Development Pub Date : 2017-12-01 DOI: 10.1061/JHTRCQ.0000601

Xiao-li Zhang, Qian Zhao, Tong Zhang

引用次数: 4