沥青路面热风循环加热机理与加热机作业参数研究

发布时间：2018-01-07 17:10

本文关键词：沥青路面热风循环加热机理与加热机作业参数研究　出处：《科学技术与工程》2014年23期 　论文类型：期刊论文

【摘要】：路面加热机是整个就地热再生机组的基础,加热机加热路面后的效果对路面再生质量有直接的影响。以热风循环式加热机工作装置为研究对象,运用多圆形喷嘴射流冲击模型对其作业过程进行分析。通过相关理论计算得出了喷嘴的排列方式、喷嘴孔直径、加热板离地高度、射流速度、热风温度等参数与沥青路面表面换热系数的关系。计算表明:三角形交错排列和矩形排列对路面换热系数的数值影响基本一致;再生作业中,当热风的冲击速度较大时,随着加热板离地高度的增加表面换热系数降低;当热风的冲击速度较小时,加热板离地高度对表面换热系数影响较小。
[Abstract]:The pavement heating machine is the foundation of the whole geothermal regeneration unit. The effect of the heating machine after heating the road surface has a direct impact on the road surface regeneration quality. The operation process of multi-circular nozzle jet impingement model is analyzed, and the arrangement of nozzle, the diameter of nozzle hole, the height of heating plate from the ground and the velocity of jet are calculated by relevant theory. The relationship between the heat transfer coefficient of asphalt pavement surface and the parameters of hot air temperature etc. The calculation shows that the numerical effect of triangle cross arrangement and rectangular arrangement on the surface heat transfer coefficient of asphalt pavement is basically the same; When the impact velocity of hot air is large, the heat transfer coefficient decreases with the increase of the height of the heating plate from the ground. When the impact velocity of hot air is small, the heat transfer coefficient of the heating plate is less affected by the height of the heating plate from the ground.
【作者单位】：重庆交通大学土木建筑学院;
【分类号】：U416.217;U415.528
【正文快照】： 近年来,随着我国公路建设的迅速发展,公路维修与改造任务也日益繁重。但在公路养护过程中仍存在资源消耗过多,环境污染较大等问题,其中废旧路面材料再利用问题尤为突出[1,2]。就地热再生由于其保护环境、干扰交通小等优点,在现有的养护体系中扮演越来越重要的角色。加热机是就

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