移动荷载作用下Winkler地基的沥青路面动力响应  

Response of Moving Load on Asphalt Pavement Rested on Winkler Foundation

作　　者：刘干斌[1] 开前正[1] 周晔[1] 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2010年第2期99-103,共5页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：浙江省自然科学基金(Y107637);浙江省科技计划项目(2008C31030)

摘　　要：采用宽度为B的无限长正交各向异性薄板来模拟沥青路面结构,研究粘弹性Winkler地基上沥青路面的移动荷载响应,使得分析模型更接近于沥青路面实际情况.将轮胎与路面接触面积简化为矩形区域,运用三角级数和Fourier变换,在变换域中得到矩形运动荷载作用下路面的动力响应解答.并运用Fourier逆变换分析了荷载速度、地基阻尼路面竖向位移的影响,最后采用叠加原理分析了双荷载作用下路面的竖向位移响应.In this paper,the asphalt pavement rested on Winkler viscoelastic foundation is treated as orthotropic thin slab with a width of B and infinite value in length,and the interface area of tire and pavement is simplified as a rectangle region.The triangular series and Fourier transformation are adopted to analyze the response,and the solution of vertical displacement under a rectangle harmonic moving load is derived.Numerical results are obtained using the inverse Fourier transformation and are used to analyze the influence of load velocity,viscoelastic damping on the vertical displacement.Furthermore,the response of displacement induced by dual load is discussed.

关 键 词：移动荷载 WINKLER地基 沥青路面 

分 类 号：TU471.2[建筑科学—结构工程]