摘要
为了提高路面实际使用寿命,分析了长寿命路面定义与设计要求,提出了以PCC(水泥混凝土路面)+AC(沥青混凝土路面)路面为主体的长寿命路面结构,运用有限元分析软件及路面弹性层状体系理论,分析了PCC板块3.0 m×4.0 m划分方式的优越性,计算了长寿命路面结构的荷载应力和温度应力。计算结果表明:采用3.0 m×4.0 m的板块划分方式,混凝土板底温度翘曲应力减少20%左右,综合应力降低10%左右;提出的路面结构的理论寿命达到了46 a,符合长寿命路面的结构设计要求。
In order to increase the actual service life of pavement, the definition and design requirement of long-life pavement were studied, a long-life pavement structure based on PCC （cement concrete pavement）＋AC（asphalt concrete pavement） pavement was suggested. With finite element analysis software and elastic layer system theory of pavement, the superiority of 3. 0 m×4.0 m slab division for PCC was analyzed, and the load stress and temperature stress of long-life pavement structure were calculated. Analysis result shows that the temperature curling stress and comprehensive stress at concrete slab bottom are reduced by about 20% and 10% respectively, the theoretical life of suggested pavement structure reaches 46 a, and it satisfies design requirement. 5 tabs, 5 figs, 10 refs.
出处
《交通运输工程学报》
EI
CSCD
北大核心
2007年第6期46-49,共4页
Journal of Traffic and Transportation Engineering
基金
国家西部交通建设科技项目(200531881213)
河南省交通科技项目(2004P213)
关键词
路面工程
长寿命路面
有限元
板块划分
应力
pavement engineering
long-life pavement
finite element
slab division
stress
