摘要
采用层间接触模型进行了三维有限元分析,并根据弯沉结果提出了用弯沉盆形状系数表征的结合系数,比较了应力有限元解和等刚度法的差别。研究了层间剪应力的分布和摩阻系数对路面状态的影响,最后分析了板的翘曲变形和尺寸效应的影响。初步分析结果表明:混凝土面层与贫混凝土基层之间为半结合状态,并非理想的结合式或分离式,建议对贫混凝土基层的应力进行20%～40%的修正。
In this article, a contact model is used to simulate the interaction in threedimensional finite element analysis, a interaction factor is put forward based on the deflection result, and the difference of stress is compared between the finite element method and the method of transformed sections.In addition, the distribution of interfacial shear stress is investigated,together with the influence of coefficient of friction to pavement state. Finally, the influence of warping and size effect is discussed. Primary conclusion indicate that the condition between concrete pavement and lean concrete base is halfbonded state. Authors suggest to revise the stress of lean concrete base by 20%～40%.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2003年第4期9-15,共7页
China Journal of Highway and Transport
关键词
道路工程
混凝土路面
三维有限元
贫混凝土基层
层间作用
弯沉盆形状系数
摩阻系数
road engineering
portland concrete pavement
three-dimension finite element
lean concrete base
interfacial interaction
deflection basin shape factor
coefficient of friction
