公路飞机跑道柔性道面结构力学响应分析

摘要

利用有限元分析软件ANSYS,建立某加铺及新建高速公路飞机跑道柔性道面结构模型,模拟道面结构的实际受力状态,对公路飞机跑道道面结构力学响应进行三维数值模拟仿真分析,通过计算在不同机型飞机荷载作用下的底层拉应力和表面弯沉值,得出合理的公路飞机跑道道面承载力参数.结果表明,该加铺及新建高速公路飞机跑道道面底层弯拉应力和表面弯沉都不大,各层的底层弯拉应力均小于设计强度,道面承载能力能够满足建设要求,有效保证了工程的使用性与安全性.%The finite element software ANSYS was applied to set up the flexible pavement structure model of a overlay and newly-built highway airstrip,simulate actual load state of pavement structure,and analyze the mechanics response of highway airstrip pavement structure by three-dimensional numerical emulate. Logical bearing capacity parameters of highway airstrip pavement were educed by calculating the bottom tensile stress and exterior flexusl sedimentation under different airplane load. Hie results show that the bottom tensile stress and exterior flexual sedimentation of overlay and newly-built highway airstrip pavement are both small, bottom tensile stress of all layers are smaller than design strength, bearing capacity of pavement can meet building requirements, which can assure the usefullness and safety of the engineering.