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为揭示美国夏威夷州公路网的国际平整度指数(IRI)在空间和时间上的分布变化趋势,对该州公路网进行了全面的调查,并编程对实测数据进行了统计分析。分析结果显示:整个路网的平均IRI较高并随时间缓慢地增长;大多数公路的平整度沿路线分布不均匀,通常在道路起终点附近略差。研究工作推动了IRI这一指标在当地的应用。统计成果被用于区域路网状况评价及预测,养护计划的制订与评估以及车辆运营成本分析等方面。
In order to reveal the spatial and temporal distribution trend of the international roughness index (IRI) of the highway network in the United States Hawaii, a survey was conducted on the highway network of the state and a statistical analysis was made on the measured data. The results show that the average IRI of the entire road network is relatively high and increases slowly over time. Most of the roads are unevenly distributed along the route, usually slightly worse near the end of the road. Research has contributed to the local application of this indicator of IRI. The statistical results are used in the assessment and prediction of regional road network conditions, formulation and evaluation of maintenance plans and analysis of vehicle operation costs.