摊铺施工熨平板竖向热变形分析与控制  

Analysis and Control of Vertical Thermal Deformation of Screed in Paving Construction

作　　者：吕思忠 郭昕 闫翔鹏 苏建明 张璐 LYU Si-zhong;GUO Xin;YAN Xiang-peng;SU Jian-ming;ZHANG Lu(Shandong Expressway Co.Ltd.,Jinan 250000,China;Key Laboratory of Road Construction Technology and Equipment,Ministry of Education,Chang'an University,Xi'an 710064,China;Shandong Academy of Transportation Sciences,Jinan 250031,China)

机构地区：[1]山东高速股份有限公司,济南市250000 [2]长安大学道路施工技术与装备教育部重点实验室,西安市710064 [3]山东省交通科学研究院,济南市250031

出　　处：《公路》2024年第11期24-29,共6页Highway

基　　金：国家重点研发计划项目,项目编号2018YFB1600100;山东省重点研发计划(公益类科技攻关)项目,项目编号2019GSF109020;山东省交通科技计划项目,项目编号2019B46。

摘　　要：针对宽幅摊铺机摊铺时因摊铺机熨平板宽度较大、混合料温度变化导致熨平板产生较大热应力变形的问题,采用有限元软件ANSYS分析热应力条件下,熨平板长度、熨平板底部温度与熨平板竖直方向变形之间的关系。结果表明:熨平板长度越大,其变形量受温度影响的程度就越高;熨平板长度一定时,熨平板变形量与温度成一次函数关系;可通过给熨平板加装桁架和控制熨平板底部混合料温度幅度等措施,保证熨平板竖直方向变形控制在要求的范围以内。In order to solve the problem of large thermal stress deformation of the screed caused by the large width of the screed and the temperature change of the mixture, the finite element software ANSYS is used to analyze the relationship between the length of the screed, the temperature at the bottom of the screed and the vertical deformation of the screed under the condition of thermal stress.The results show that: the larger the length of the screed, the higher the degree of its deformation affected by temperature;when the length of the screed is fixed, the deformation of the screed is a function of temperature;and the vertical deformation of the screed can be ensured within the required range by adding trusses to the screed and controlling the temperature range of the mixture at the bottom of the screed.

关 键 词：道路工程 宽幅摊铺 摊铺机 熨平板 熨平板变形 

分 类 号：U415.521[交通运输工程—道路与铁道工程]