摘要
将沥青面层抗反射裂缝疲劳寿命和水泥混凝土板弯拉疲劳强度作为复合式机场道面的设计依据,基于复合式机场道面荷载应力、温度应力及抗反射裂缝疲劳寿命的计算式,借鉴民用航空运输机场水泥混凝土道面结构设计方法和公路水泥混凝土路面结构设计方法,提出了以荷载与温度综合疲劳弯拉应力和沥青面层反射裂缝疲劳寿命为设计指标的复合式机场道面结构设计方法,以单层、双层、三层的面层结构组合方案进行对比设计。设计结果表明:面层采用双层的改性沥青混凝土方案时综合疲劳应力为4.84 MPa,抗反射裂缝疲劳寿命为699 362次,满足设计要求,是一种经济可靠的结构组合方案,因此,设计方法可行。
The anti-reflective cracking fatigue life of asphalt course and the fatigue strength of concrete slab were taken as design basis.The structure design methods of the specifications for the cement concrete pavements of civil transport airport and highway were analyzed.The calculated equations of load stress,temperature stress and anti-reflective cracking fatigue life were studied.A structure design method of composition airfield pavement was put forward.Its two design indexes were the synthetic fatigue stress under load and temperature for concrete slab and the fatigue life of anti-reflective cracking for asphalt surface course.During the analysis of design examples,the projects of single layer,double layers and three layers were contrasted.The result indicates that for double layers modified asphalt structure,the fatigue stress is 4.84 MPa,and the anti-reflective cracking fatigue life is 699 362 times,which meets the design requirement of the example,so the project is credible and the structure design method is reasonable.6 tabs,1 fig,10 refs.
出处
《交通运输工程学报》
EI
CSCD
北大核心
2010年第2期36-40,共5页
Journal of Traffic and Transportation Engineering
基金
国家自然科学基金项目(60472120)
关键词
复合式机场道面
结构设计
综合疲劳应力
疲劳寿命
composition airfield pavement
structure design
synthetic fatigue stress
fatigue life
