摘要
针对沥青路面在使用过程中受到温度、载荷共同作用而导致损伤或破坏的问题,提出利用热敏调节日照辐射的解决方法。以上海和武汉地区为例,基于ABAQUS有限元软件,对典型路面结构在热敏作用下的全年特性和危害进行仿真。结果表明,采用热敏可显著改善沥青路面的温度场和应力场;武汉和上海道路最高温度降低18.6℃和33.4℃,应力最大值下降10.8%和76.3%,车辙变浅82.2%和94.9%。热敏作用的日照辐射吸收率调节范围宽度一定时,整体偏高的道路吸收率,如0.4-0.9,更有利于兼顾道路在冬季的防冻和夏季的低温。给定高吸收率α_(2)=0.9或低吸收率α_(1)=0.4时,调节宽度越大,如0.4-0.8与0.5-0.9,带来夏季低温的同时更有利于预防冬季病害。
Aiming at the problem that the asphalt pavement is damaged or destroyed by the combined action of temperature and load in the process of use,a solution is put forward to adjust the sunshine radiation by thermal sensitivity.Based on ABAQUS finite element software,the year-round characteristics and hazards of typical pavement structures under thermal sensitivity were simulated in Shanghai and Wuhan.The results show that the temperature field and stress field of asphalt pavement can be significantly improved by adopting thermal sensitivity.In Wuhan and Shanghai,the maximum road temperature decreased by 18.6℃ and 33.4℃,the maximum stress decreased by 10.8% and 76.3%,and the ruts became shallower by 82.2% and 94.9%.When adjustment range width of the solar radiation absorption rate of thermal sensitivity is certain,the overall high road absorption rate,such as 0.4-0.9,is more conducive to taking into account the anti-freezing of the road in winter and the low temperature in summer.When the high absorption rate α_(2)=0.9 or low absorption rate α_(1)=0.4 is given,the larger the adjustment width,such as 0.4-0.8 and 0.5-0.9,the lower temperature in summer is more conducive to preventing winter diseases.
作者
徐士轩
于越
汪城
朱晔
XU Shi-xuan;YU Yue;WANG Chen;ZHU Ye(School of Petroleum and Natural Gas Engineering,Changzhou University,Changzhou Jiangsu 213164,China;School of Petrochemical Engineering,Changzhou University,Changzhou Jiangsu 213164,China)
出处
《计算机仿真》
2025年第3期182-190,共9页
Computer Simulation
关键词
吸收率
热敏调节
温度场
应力场
沥青路面
Absorption rate
Thermochromic adjustment
Temperature field
Force field
Asphalt pavement
