摘要
为研究层间结合状态对复合混凝土路面层底温度应力的影响,基于有限元软件构建了复合混凝土路面的温度模型,通过改变路面结构组合形式、层间摩擦系数、面层厚度等,分析了复合混凝土路面不同方向层底温度应力和耦合应力的变化情况。研究结果表明:层底温度应力受下面层强度和厚度的影响较大,下面层强度由C30增加到C40,行车方向和垂直于行车方向的层底温度应力分别增加了4.27%和4.73%;当层间摩擦系数从0增加到20时,行车方向和垂直于行车方向的层底温度应力分别减小了8.1%和6.0%;层底耦合应力随着层间摩擦系数和面层厚度的增加而减小,减小幅度与面层厚度成反比。
To study the influence of interlayer bonding conditions on bottom temperature stress of composite concrete pavement layers,a temperature model of composite concrete pavement was constructed based on finite element software.By changing pavement structural combination forms,interlayer friction coefficients,surface layer thicknesses,etc.,variations in bottom temperature stress and coupled stress in different directions of composite concrete pavement were analyzed.Research results indicate:bottom temperature stress is significantly influenced by the strength and thickness of the lower layer;when the lower layer strength increases from C30 to C40,bottom temperature stress in the driving direction and perpendicular to the driving direction increases by 4.27%and 4.73%,respectively;when the interlayer friction coefficient increases from 0 to 20,bottom temperature stress in the driving direction and perpendicular to the driving direction decreases by 8.1%and 6.0%,respectively;bottom coupled stress decreases with increasing interlayer friction coefficient and surface layer thickness,with the reduction magnitude inversely proportional to surface layer thickness.
作者
季宏宇
胡朋
赵兴奎
刘柏成
孙丰哲
马云龙
JI Hong-yu;HU Peng;ZHAO Xing-kui;LIU Bai-cheng;SUN Feng-zhe;MA Yun-long(School of Traffic&Civil Engineering,Shandong Jiaotong University,Jinan 250357,China;Shandong Dongtai Engineering Consulting Co.,Ltd.,Zibo 256410,China)
出处
《中国市政工程》
2026年第1期102-106,111,140,共7页
China Municipal Engineering
基金
山东省交通运输厅科技计划项目(2022B17)
山东省自然科学基金联合项目(ZR2017LEE026)。
关键词
有限元
复合混凝土路面
层底温度应力
面层厚度
层间摩擦系数
finite element
composite concrete pavement
bottom temperature stress
surface layer thickness
interlayer friction coefficient
