您的位置:首页  > 论文页面

水平荷载及超载作用对沥青路面力学响应的影响

发表时间:2012-06-30  浏览量:1351  下载量:680
全部作者: 刘圣洁,郑南翔
作者单位: 特殊地区公路工程教育部重点实验室,长安大学公路学院
摘 要: 为分析路面结构在不同行车荷载作用下的力学响应,基于我国常见的半刚性基层沥青路面,利用BISAR 3.0软件对其内部力学变化进行分析,同时考虑不同的水平荷载系数和超载情况,对沥青路面路表竖向变形、横向变形、路面内部压应力及剪应力在荷载作用下的力学响应进行计算。结果表明:对于半刚性基层沥青路面而言,水平荷载作用对路表竖向变形影响很小,但对路表横向变形影响很大;同时,在标准轴载作用下,沥青路面内部的最大压应力位置和最大剪应力位置均出现在路表以下5 cm左右,而当轴载超载率为100%时,沥青路面内部的最大压应力位置出现在路表以下1.5 cm左右,但其最大剪应力出现位置受水平荷载的影响比较大。
关 键 词: 道路工程;力学响应;沥青路面;水平荷载;超载
Title: Influence of horizontal load and overload on the mechanics response of asphalt pavement
Author: LIU Shengjie, ZHENG Nanxiang
Organization: Key Laboratory for Special Area Highway Engineering of Ministry of Education, Highway School, Chang’an University
Abstract: To analyze the response of pavement structure under different loading, based on the semi-rigid base asphalt pavement, and considering the different horizontal load coefficients and overloading rates, the deflection, lateral deformation on the surface, the compressive stress, shear stress of inner pavement structure was studied by the program of BISAR 3.0. The result shows that the horizontal load impacts little on the deflection of the surface, but impacts much on the lateral deformation, when the load is standard. The maximum compressive stress and the maximum shear stress appear at 5 cm below the surface, and when the overloading rate is 100%, the maximum compressive stress appears at 1.5 cm below the surface, the maximum shear stress changes following the horizontal load coefficients.
Key words: road engineering; mechanical response; asphalt pavement; horizontal load; overloading
发表期数: 2012年6月第12期
引用格式: 刘圣洁,郑南翔. 水平荷载及超载作用对沥青路面力学响应的影响[J]. 中国科技论文在线精品论文,2012,5(12):1138-1143.
 
0 评论数 0
暂无评论
友情链接