弹性地基上复合路面的受力分析  

Mechanic analysis of composite pavement on elastic foundation

作　　者：祝海燕[1] 王选仓[1] 曹宝贵[2] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]吉林大学交通学院,吉林长春130025

出　　处：《长安大学学报（自然科学版）》2008年第3期25-29,共5页Journal of Chang’an University(Natural Science Edition)

基　　金：国家西部交通建设科技项目(200531881213)

摘　　要：为探讨水泥混凝土路面上覆沥青层复合结构(PCC-AC)的设计计算方法,通过建立层状弹性地基上多层复合路面的统一计算模型,采用弹性地基上的多层薄板理论,得出了分离式路面和结合式路面的求解方法。并应用该方法对圆形均布荷载作用下双层地基上的沥青-混凝土复合路面进行了分析,其混凝土板底弯沉值及应力值与ANSYS有限元分析结果及规范方法吻合较好,表明用该方法计算PCC-AC结构水泥混凝土板荷载应力具有足够精度。In order to study the design and calculation method of PCC-AC composite pavement, a uniform analysis model of multi-layer composite pavement on double composite foundation is established. The theory of multi-layer thin-walled plates on elastic foundation is adopted to solve the bonded and unbonded composite pavements. As an example, the asphalt and concrete twolayer composite pavement on a double composite foundation under uniform circular load is analyzed by this method. The calculated deflection and stress beneath of concrete slab have a good agreement with the ones of the ANSYS finite element analysis and the Specification of Cement Concrete Pavement Design for Highway. This result indicates that the stress of cement concrete plate of PCC-AC pavement can be calculated by this method with high accurate. 4 tabs, 3 figs, 8 refs.

关 键 词：道路工程 多层薄板理论 复合路面 层状弹性地基 

分 类 号：U416.216[交通运输工程—道路与铁道工程]