车辆轴数和轮组对半刚性沥青路面极限轴载的影响

发布时间：2018-01-14 20:16

本文关键词：车辆轴数和轮组对半刚性沥青路面极限轴载的影响　出处：《武汉理工大学学报》2014年12期 　论文类型：期刊论文

【摘要】：通过对半刚性沥青路面典型结构进行有限元计算,探讨车辆轴数和轮组对路面极限轴载的影响。分析结果显示:轴数和轮组是影响半刚性沥青路面结构极限轴载的重要因素,路面的极限轴载随着车辆轴数或者轮组的增加而增大,增加轴数或者轮组可以提高半刚性沥青路面的极限轴载,保证路面的承载能力;极限轴载与轴型系数呈正比关系,轴型系数反映了轴数与轮组对极限轴载的综合影响;轮组相同时,随着轴数从单轴增加到双轴、三轴、四轴,轴型系数的增长率随轴数的增加而降低,为50%~27%~18%;轴数相同时,随着轮组从单轮组增加到双轮组、四轮组,轴型系数的增长率随轮组的增加而增加,为7.3%~13.5%。
[Abstract]:By the finite element calculation of semi-rigid asphalt pavement, to investigate the effect of axle and wheel group on the surface of axle load limits. Analysis results show that the number of axles and wheels is an important factor affecting the limit of semi rigid asphalt pavement structure of axle load, increases with the number of axles or wheel load limit shaft the road, increasing the number of axles or ultimate axle wheel can improve the semi-rigid asphalt pavement, ensure the pavement bearing capacity; ultimate axle load and axle type coefficient is proportional to the axial coefficient reflects the combined effects of the number of axis and wheel group on ultimate axle load; wheel group, with the increase in the number of axis from uniaxial to biaxial, three axis, four axis, axis type coefficient increase the growth rate of the number decreased along with the axis, 50%~27%~18% axis; the same number, with the wheel group increased from single to double wheel group, four wheel, shaft type coefficient increase with the growth rate of the wheel set Increase, for 7.3%~13.5%.

【作者单位】：湖南大学土木工程学院;
【基金】：湖南省交通运输厅科技进步与创新计划项目(201110)
【分类号】：U416.217
【正文快照】： 目前,公路交通运输超载日益严重,沥青路面早期破坏现象越来越普遍,半刚性沥青路面在某个极限的轴载作用下一次就可以达到破坏,蜕变为近似的柔性路面,丧失设计要求的前提[1]。车辆荷载是影响路面使用寿命的关键因素之一,一般以车辆(单车或组合车)总重和各轴型的轴重、各轮组的

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