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沥青路面超宽摊铺对路面平整度的影响分析 被引量:1

Analysis of the Influence of Ultra-wide Paving of Asphalt Pavement on Pavement Smoothness
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摘要 沥青路面超宽摊铺工艺简便、经济效益优,但超宽摊铺施工对路面平整度具有更高挑战性。普通摊铺常因摊铺工艺选择不当、施工前后距离难以控制等原因,热冷接缝较难处理。但采用超宽摊铺施工无法绝对防治熨平板两端震颤,而且容易引发螺旋输送器送料不均造成的边缘混合料离析和温度离析,易对路面平整度造成一定影响。因此,如何提高超宽路面摊铺对平整度是一个亟需解决的工程难题。文章通过分析超宽摊铺施工引起的混合料边缘离析等问题,选取国际平整度指数及路面行驶质量指数作为平整度评价指标,并根据测得数据对不同车道平整度分布进行分析。结果表明:超宽摊铺施工会造成路面摊铺过程中边缘混合料离析,道路两侧车道平整度相对道路中部车道平整度较差。 The ultra-wide paving process is simple and economical,but the ultra-wide paving construction generally affects the road surface smoothness to a certain extent.Ordinary paving is often difficult to deal with hot and cold joints due to improper selection of paving technology and difficulty in controlling the distance before and after construction.However,the use of ultra-wide paving construction cannot absolutely prevent the tremor at both ends of the screed,and it is easy to cause edge mixture segregation and temperature segregation caused by uneven feeding of the screw conveyor,which will easily affect the smoothness of the road surface.Therefore,how to improve the ultra-wide paving is an engineering problem that needs to be solved urgently for flatness.This paper analyzes the problems of the edge segregation of the mixture caused by the ultra-wide paving construction,selects the international flatness index and the road surface quality index as the flatness evaluation indicators,and analyzes the flatness distribution of different lanes based on the measured data.The results show that:The ultra-wide paving construction will cause the edge mixture to segregate during the paving process,and the flatness of the lanes on both sides of the road is poorer than the flatness of the lane in the middle of the road.
作者 郝林 HAO Lin
出处 《内蒙古公路与运输》 2020年第6期25-30,共6页 Highways & Transportation in Inner Mongolia
关键词 超宽摊铺 平整度 国际平整度指数 行驶质量指数 ultra-wide paving flatness international flatness index driving quality index
作者简介 郝林(1980-),男,鄂尔多斯人,正高级工程师,研究方向:路桥。
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