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国际平整度指数的计算方法

         

摘要

从标准化1/4车模型的理论计算方法入手,采用理想实验平台和模拟试验数据进行不同计算方法试验,消除其他因素对计算结果判断的影响.初值为零的赋值方法计算结果受统计段长的影响最大,为了满足偏差控制要求,统计间隔应不少于100 m;初值采用11 m位预热初值的计算方法更接近实际情况,为了降低偏差控制风险,统计间隔也不宜小于100 m;初值连续的计算方法提出了断首的数据处理方法,有效控制了初值影响的深度,断首长度达到50 m以上时,后续段落的计算结果偏差与初值无关。%Academic calculation method of quarter car model is studied firstly.Ideal experiment platform and simulation data are used in calculation method experiment.This method can eliminate the influence of some factors which affect final result.Experiment is divided into three steps.Firstly,0 is given as start value and the result proves that this method can cause the most deviation.In order to lower the deviation,statistic interval must be no less than 100 meters.Secondly,11 meters warm up value is given as start value and the result proves that 100 meters may be the best choice as statistical interval.Lastly,continuous start value is used as the next interval start value.This method is proved as an effective way to control deviation.The suggestion of data head cutting interval is no less than 50 meters.

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