考虑养生期水化热影响的高海拔地区水泥稳定碎石层温度分布研究  

Study on Temperature Distribution of Cement Stabilized Macadam Condidering Curing Time in High Altitude Area

作　　者：王争军[1] 胡军伟[1] 柯文豪[1] 雷宇[1] WANG Zhengjun;HU Junwei;KE Wenhao;LEI Yu(CCCC First Highway Consultants Co.,Ltd.,Xi an,Shaanxi 710075,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710065

出　　处：《公路工程》2024年第1期144-150,183,共8页Highway Engineering

基　　金：国家重点研发计划资助项目(2021YFB2601200);西藏自治区重点公路建设项目管理中心科技项目(XZJTKJ〔2020〕03)。

摘　　要：为了揭示高海拔地区水泥稳定碎石层养生期温度分布规律,采用有限元软件ABAQUS建立了基于水化热的水泥稳定碎石层养生期三维非稳态计算模型,分析了日最低气温、日温差、太阳辐射总量、风速、水泥稳定碎石厚度及水泥剂量等因素对水泥稳定碎石层养生期温度场分布的影响及其敏感性。分析表明:随着日最低气温、日温差、日太阳辐射总量及水泥剂量的增大,水泥稳定碎石层表面及层中温度逐渐提高;随着风速的增大,水泥稳定碎石层表面及层中温度逐渐降低;水泥稳定碎石层表面最低温度的关键影响因素为风速,层中最低温度的关键影响因素为水泥稳定碎石厚度。In order to reveal the temperature distribution rule of cement stabilized macadam layer in high altitude area during curing period,three-dimensional unsteady-state calculation model of cement stabilized macadam during curing period was established by using ABAQUS.The influence and sensitivity of daily minimum air temperature,diurnal temperature range,global solar irradiation,wind speed,cement stabilized macadam thickness and cement dosage on the temperature field of cement stabilized macadam during curing period were analyzed.Results show that with the increase of daily minimum temperature,diurnal temperature range,global solar irradiation and cement dosage,the temperature of cement stabilized macadam surface and layer increased gradually.With the increase of wind speed,the temperature of cement stabilized gravel surface and layer decreased gradually.The key influential factor of the minimum temperature on the surface of cement stabilized macadam base is wind speed,and the key influential factor of the minimum temperature in the layer is the thickness of cement stabilized macadam.

关 键 词：ABAQUS 温度场 水化热 灰色关联度 水泥稳定碎石 

分 类 号：U416.214[交通运输工程—道路与铁道工程]