交叉路口沥青路面变形病害机理分析  

The Theoretical Analysis of Diseases of the Surface Deformation of Signal Crossing Road

作　　者：于玲[1] 钟右鹏[1] 包龙生[1] 王占飞[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2010年第4期709-715,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省教育厅科技攻关项目(2008586)

摘　　要：目的研究信号交叉路口路面产生的"波浪"和车辙等特殊破坏现象产生的原因.方法应用层状弹性体系理论分析信号交叉路口路面结构在水平荷载和竖向荷载作用下的力学特性.以营口市市区交叉路口典型路面结构为例,运用路面数值计算程序Bisar分析在车辆不同行驶状况和不同荷载状况下信号交叉路口路面结构的力学响应.结果通过分析不同结构层竖向压应力、竖向位移和剪应力分布情况,得到当超载100%时,紧急制动条件下,沥青路面上面层轮迹外缘的剪应力为正常行驶情况下的剪应力1.67倍.从理论上得出交叉路口路面结构在不同运行条件下的受力特点和与之相对应的破坏现象.结论根据交叉路口不同车流量种类来设计相应路面结构层材料参数以减少交叉路口路面受损.The research studies the reason that why the signal crossing road surface has the wave and wheel rut and why the special destruction phenomenon produces. This paper applies the layered elastic system to analyze the mechanics characteristic of signal crossing pavement structure in the horizontal load and under the vertical load function. In Yingkou city, a typical urban intersection pavement structures, for example, this paper uses surface numerical calculation program Bisar to analyze the mechanical response of the vehicle in different conditions and different load conditions in the signal crossing road structure. By analyzing the size and distribution of the layers structure of different vertical compressive stress, vertical displacement and shear stress,this paper obtains works as overload 100%, under emergency brake conditions; in bituminous pavement surface layer cart rut outflow boundary shearing stress for normal speed situation in sheafing stress 1.67 times. Therefore, the theoretical reason of stress characteristic has been obtained of the crossing pavementstructure which in light of this and the destruction phenomenon produced under the different movement condition. According to the intersection of different types of traffic, the designer can design the corresponding layer of pavement structure, material parameters in order to reduce damage on the road intersection.

关 键 词：层状弹性体系 车辙 超载 摩擦系数 剪应力 

分 类 号：U416.217[交通运输工程—道路与铁道工程]