摘要
推导了沥青路面多层粘弹半空间轴对称问题的理论解,引入F.Durbin的方法实现Laplace逆变换,通过实例计算路表弯沉表明,初始时段所得结果与弹性解基本一致,随着时间的推移,多层粘弹体系表面弯沉增大,说明随时间的推移,材料的粘性起到更大的作用,反映了粘弹材料的蠕变变化规律,与实际情况相符。
By means of transfer matrix and integral transformation,the solution for solving axisymmetrical problems in asphalt pavement multilayered viscoelastic half space is derived,F.Durbin's numerical inversion transform of laplace is used.An example shows that deflection in the beginning times is in good agreement with that in elastic solution,with time passing,the surface deflection in multilayered viscoelastic body increases,which explains that the viscidity of material plays greater part.
出处
《四川建筑科学研究》
2004年第1期76-79,共4页
Sichuan Building Science
基金
国家自然科学基金资助项目(50008005)
关键词
沥青路面
粘弹性
积分变换
传递矩阵
蠕变
asphalt pavement multilayered viscoelastic body
integral transformation
transfer matrix
