沪宁高速公路高温爆胎阈值和爆胎风险指数的研究

摘要

利用沪宁高速公路江苏段沿线建立的26套交通气象自动站2012-2013年7-8月份逐分钟气温和00cm路面温度数据资料,结合沪宁高速公路江苏段的汽车爆胎事故数据.研究表明:汽车爆胎事故具有明显的日变化特征,主要发生在08-17时;汽车爆胎与气温和00cm路面温度都具有非常密切的关系,当气温和路面温度均低于25℃时,高速公路上汽车高温爆胎的几率很小;当气温高于30℃,或路面温度高于35℃时,爆胎发生的频率明显增加;爆胎事故数量与最高气温和路面最高温度并不是呈简单的线性关系,但它们的变化趋势基本一致,爆胎频次随着气温和路面温度升高而增大,反之亦然;爆胎频次≥10次时的最高气温均在30℃以上,在35℃以上的占90.9％;路面最高温度均在45℃以上,在57℃以上的占92.5％;利用灾情统计方法,根据爆胎频次多少将最高气温和路面最高温度划分为4个等级,并建立了相应的爆胎风险指数.%By using the per-minute air temperature and 00cm surface temperature data gathered from 26 sets of the Huning AWM in July and August from 2012 to 2013,and combining with the accident information of tire burst on Huning Expressway.Research shows:tire burst has obvious diurnal variation characteristics,mainly occurred in 08 ～ 17;there is a very close relationship between the surface-air temperature and tire burst,when air temperature and 00cm surface temperature below 25℃,tire burst probability is small;when air temperature higher than 30℃ and 00cm surface temperature higher than 35℃,tire burst probability is great;The number of tire burst and the highest of surface temperature and air temperature is not a simple linear relationship,but the trend is basically the same.The frequency of tire burst increases with the increase the air temperature and 00cm surface temperature;When the surface temperature high than 30℃,the frequency of tire burst higher than 10 times,When the surface temperature high than 35℃ accounted for 90.9％.00cm surface temperature all above 45℃,above 57 ℃ accounted for 92.5 ％;By statistical method of disaster,according to the frequency of tire burst,the maximum temperature and the maximum temperature of road surface are divided into 4 grades,and the corresponding tire blowout risk index is established.