机场刚性道面地基的工作区深度研究  

Study on service depth of airport rigid pavement subgrade

作　　者：程国勇[1] 杨召焕[1] 

机构地区：[1]中国民航大学机场学院,天津300300

出　　处：《中国民航大学学报》2013年第2期51-56,共6页Journal of Civil Aviation University of China

基　　金：中央高校基本科研业务费专项(ZXH2009A002);中国民航大学重点科研项目(CAUC2009ZD0203);中国民航大学研究生科技创新基金项目(YJSCX12-27)

摘　　要：以附加应力等于地基自重应力的10%为标准,应用有限元软件分析了飞机荷载类型、道面板厚度、道面混凝土材料以及道面土基回弹模量对于道面地基的工作区深度的影响。结果表明:飞机荷载类型对工作区深度的影响较为显著,轻型飞机工作区深度在1.5 m左右,而重型飞机工作区深度可达6.0 m。道面板厚度在0.2～0.5 m范围内变化时,对于重型飞机,其影响深度在4.4～6.0 m范围内变化,变化幅度达36.4%;面层材料弯拉模量对影响深度影响很小。对于重型飞机作用下,土基回弹模量在18～80 MPa内变动时,路基工作区深度由4.4 m增为5.4 m,增幅为18.5%。上述结论对于场道地基处理及分析计算具有参考价值。In this article finite element software is applied in analysis of the influence of aircraft load, surface layer thickness, flexural modulus of concrete and the rebound modulus of subgrade parameters on subgrade service depth with the additional stress is equal to the gravity stress of 10% as a standard. The results show that： the influence of aircraft load type on the service depth is relatively distinct, service depth in subgrade of light aircraft is about 1.5 m, and service depth of heavy aircraft reaches 6.0 m. The service depth in subgrade with the heavy aircraft ranged from 4.4-6.0 m under the condition of slab thickness in 0.2-0.5 m range, which extended by 36.4% of the lower value; the surface layer material flexural modulus to influence depth is very small. The service depth in subgrade with the heavy aircraft ranged from 4.4 m to 5.4m under the condition of the subgrade resilient modulus in 18-80 MPa range, extended by 36.4%. The conclusion above is more referenced by sofl foundation treatment and analysis.

关 键 词：刚性道面 工作区深度 有限元分析 附加应力 

分 类 号：U416[交通运输工程—道路与铁道工程]