大风大温差环境下沥青路面施工保温措施研究  

Study on Thermal Insulation Measures for Asphalt Pavement Construction under Environment Exposed to High Wind and Large Temperature Difference

作　　者：左强 后乐田 蔡乾东 马靖龙 ZUO Qiang;HOU Letian;CAI Qiandong;MA Jinglong(Gansu Road and Bridge Third Highway Engineering Co.,Ltd.,Lanzhou Gansu 730050,China;Shaanxi Dongdao Special Pavement Technology Co.,Ltd.,Xi′an Shaanxi 712000,China;Gansu Gerui Engineering Testing Co.,Ltd.,Lanzhou Gansu 730050,China)

机构地区：[1]甘肃路桥第三公路工程有限责任公司,甘肃兰州730050 [2]陕西东道特种路面科技有限公司,陕西西安712000 [3]甘肃格瑞工程检测有限公司,甘肃兰州730050

出　　处：《交通节能与环保》2023年第5期151-156,共6页Transport Energy Conservation & Environmental Protection

摘　　要：本文通过对河西走廊西端大风大温差环境特征的调查分析,基于“风速”与“温差”两个要素,提出了沥青路面大风大温差环境区划指标,以及大风大温差环境下热拌沥青混合料运料车、胶轮压路机及摊铺机布料器、受料斗保温措施;实践表明利用全幅摊铺、初压及复压施工区两侧设置的一种柔性挡风保温屏障,可有效减少作业区域因风带走的温度损失,降低了摊铺层表面与表内温差,提高内部温度5℃以上。Following an investigation and analysis of the environmental conditions characterized by high wind and large temperature difference in the western region of Hexi Corridor,and based on the two factors of"wind speed"and"temperature difference",the zoning indicators of asphalt pavement under environment exposed to high wind and large temperature difference were put forward.Beyond that,the thermal insulation measures for hot-mix asphalt-aggregate material transfer vehicle,rubber-tyred roller,paver distributor and receiving hopper were proposed.As to a flexible wind insulation barrier arranged on both sides of the construction section by the use of full paving,initial pressing and re-pressing,the practice shows that it can effectively reduce the temperature loss due to wind in the working area,reduce the temperature difference between the surface and the interior of the paving layer,and increase the internal temperature by more than 5℃.

关 键 词：沥青路面 大风大温差 覆盖保温 挡风保温 施工控制 

分 类 号：U416.217[交通运输工程—道路与铁道工程]