倒装结构沥青路面结构内部温度变化分析  

Analysis of Temperature Variations within Inverted Structure Asphalt Pavement

作　　者：贾林坤 冯立群 杨向军 凌远 柳燕燕 JIA Linkun;FENG Liqun;YANG Xiangjun;LING Yuan;LIU Yanyan(Xinjiang Academy of Transportation Science Co.,Ltd.,Urumqi,Xinji ang 830000,China)

机构地区：[1]新疆交通科学研究院有限责任公司,新疆乌鲁木齐830000

出　　处：《黑龙江交通科技》2025年第4期1-5,10,共6页Communications Science and Technology Heilongjiang

基　　金：新疆维吾尔自治区自然科学基金(2022D01A55);新疆维吾尔自治区交通运输厅科技项目(2019-ZD1-013)。

摘　　要：我国新疆因为处于亚欧大陆中央,远离海洋,形成了夏季酷热、冬季寒冷,年、日温度差异巨大的气候,路面反射裂缝病害严重。而倒装结构沥青路面较常规结构沥青路面在改善路面结构层温度与吸收降低水泥稳定砂砾层应力两方面可以有效减少反射裂缝的产生及发展。为了揭示倒装结构沥青路面和常规结构沥青路面温度分布的差异,应用有限元软件,模拟倒装结构沥青路面和常规结构沥青路面温度变化的全过程,并通过倒装结构沥青路面试验路的监测数据,验证有限元模拟的准确性。分析结果表明,倒装结构沥青路面可以有效地改善半刚性基层所处环境的温度,可降低半刚性基层峰值温度8.9℃,从而减缓温缩裂缝的产生。Xinjiang,located at the heart of the Eurasian continent and far from the ocean,experiences an extreme climate characterized by intense summer heat,severe winter cold,and significant annual and daily temperature fluctuations,leading to serious pavement reflective cracking.Inverted structure asphalt pavements,compared to conventional structure asphalt pavements,can effectively reduce the occurrence and development of reflective cracks by improving the temperature distribution within the pavement structure and absorbing stress in the cement-stabilized gravel layer.To uncover the differences in temperature distribution between inverted structure asphalt pavements and conventional structure asphalt pavements,the finite element software was employed to simulate the entire process of temperature changes in both types of pavements.Additionally,monitoring data from an experimental inverted structure asphalt pavement was used to validate the accuracy of the finite element simulations.The analysis results indicate that the inverted structure asphalt pavement can effectively improve the temperature environment of semi-rigid bases,reducing the peak temperature of the semi-rigid base by 8.9℃,thereby slowing down the occurrence of temperature shrinkage cracks.

关 键 词：道路工程 大温差环境 倒装结构 有限元分析 实时监测 

分 类 号：U416.1[交通运输工程—道路与铁道工程]