摘要
FWD能较好地模拟动荷载的作用,在对FWD动态弯沉盆的特性分析的基础上,以ANSYS有限元计算软件为工具,对FWD荷载作用于纵缝板边缘中部、板角、板中位置时的动力特性进行了模拟,得到了不同结构层厚度和材料强度的水泥混凝土路面结构在标准动荷载作用下的层间应力以及路表弯沉的变化规律,研究成果为水泥混凝土路面结构设计、了解路面结构在动载作用下的力学响应提供了理论依据和参考。
FWD can simulate dynamic vehicles load with excellent correlation.Based on the characteristic analyze of FWD dynamic deflection basin,the FWD load was simulated with finite element software ANSYS to analyse concrete pavement dynamic response when the load was distributed to longitudinal joint middle margin,slab corner and slab center respectively.The calculation results show the changing rule of dynamic deflection and stress under different structure layer thicknesses and materials strengths.The research result can provide concrete pavement structure design with theory basis and reference,besides it can be used to help understand mechanic responses under dynamic vehicles load.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2007年第6期35-39,共5页
Journal of Railway Science and Engineering
基金
湖南省自然科学基金资助项目(06jj4072)
关键词
落锤式弯沉仪
有限元
结构参数
力学性能
FWD
finite element
structure parameters
mechanics properties
