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首页> 外文期刊>American Journal of Traffic and Transportation Engineering >Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods
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Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods

机译：使用RN29，LR1132和HD26 / 01方法进行路面结构设计交通评估

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摘要

Traffic surveys are means of obtaining information about the traffic characteristics of an area. The data collected is used for traffic assessment of the area for various Engineering purposes. This study was an attempt to conduct a traffic assessment for the purpose of pavement design. Three design methods: Road Note 29 (RN 29), Laboratory Report 1132 (LR 1132), and Design manual for Highways and Bridges (DMHB; HD 26/01), were adopted. Three locations along the Onitsha-Enugu expressway, a Nigerian interstate highway, were surveyed. The highest volume of commercial vehicles was observed at the Nkpor location with corresponding design traffics of 108msa, 304msa, and 92.92msa using RN 29, LR 1132, and HD 26/01 respectively. Computed design traffics for Nkpor, Awkuzu, and Kwata locations using LR 1132 were 304msa, 175msa, and 167msa respectively. These were found to be significantly higher than those computed using RN 29 and HD 26/01 due to the fact that a uniform damaging factor was computed for the entire traffic count without any form of categorization or weight impact discrimination. It was concluded that the traffic assessment method to be adopted for any pavement design purpose should be consistent with the design method to be used for the selection of pavement thicknesses.
机译：交通调查是获取有关区域交通特征信息的手段。收集到的数据用于该区域的流量评估，以用于各种工程目的。这项研究是为了进行路面设计而进行的交通评估的尝试。采用了三种设计方法：道路注释29（RN 29），实验室报告1132（LR 1132）和公路和桥梁设计手册（DMHB; HD 26/01）。沿尼日利亚州际公路Onitsha-Enugu高速公路沿线的三个位置进行了调查。使用RN 29，LR 1132和HD 26/01分别在Nkpor地点观察到了商用车的最高量，相应的设计流量为108msa，304msa和92.92msa。使用LR 1132计算的Nkpor，Awkuzu和Kwata位置的设计流量分别为304msa，175msa和167msa。这些事实被发现明显高于使用RN 29和HD 26/01计算的结果，这是因为事实是，对整个交通量计算出统一的破坏因子，而没有任何形式的分类或重量影响判别。结论是，用于任何路面设计目的的交通评估方法应与用于路面厚度选择的设计方法一致。

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