重载作用下沥青路面结构验算方法  

Checking measures of asphalt pavement structure under overloading

作　　者：张碧琴[1] 马亚坤[1] 张强[1] 王莉[2] 王垒[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]中国市政工程华北设计研究总院,天津300074

出　　处：《长安大学学报（自然科学版）》2014年第1期1-6,共6页Journal of Chang’an University(Natural Science Edition)

基　　金：交通运输部西部交通建设科技项目(2006 318 000 77)

摘　　要：针对目前中国日趋严重的超载现象,为方便公路养护管理部门定期对路面结构状况进行调查评定,及时对相应路段公路进行维修养护,以现行沥青路面设计规范为基础,经过大量的数据分析对比,利用线性回归方法,获得了车辆重载运输轴载作用下的沥青路面标准轴载换算公式;同时根据沥青路面结构特点,对考虑重载作用的路面结构的验算内容和原则进行讨论和分析,最终确定以考虑超载作用的路面弯沉值、容许拉应力值、路面使用寿命及所需结构层厚度,作为沥青路面结构承载力验算的验算系统。研究结果表明:得出的沥青路面标准轴载换算公式以及沥青路面结构验算系统,对国道G108陕西渭南故市镇路段路面结构状况的调查评定是合理的,评定结果可为公路养护部门提供科学的决策依据。Aimed at more and more serious overloading transportation in China, to help the ad- ministration departments to evaluate asphalt pavement structure under overload, as while as to take measures for road maintenance timely, this paper obtained the axle load conversion formula under the overloading transportation, which was based on the current specification for design of highway asphalt pavement,as while as the analysis of a large amount of data with a linear regres- sion method. The content and principles of the pavement structure checking were discussed ac- cording to the structural characteristics of asphalt pavement under overloading transportation, and ultimately overloading pavement deflection value, allowable tensile stress value, pavement life and the necessary structural layer thickness of asphalt pavement structure were checked to e- valuate pavement structure conditions. The results show that it is reasonable to investigate and e- valuate the pavement condition at the section of Gushi town in Weinan city, Shaanxi province u- sing the standard axle load conversion formula of asphalt pavement and the asphalt pavement structure checking system concluded in this paper and the results will provide a scientific basis for road maintenance departments. 2 figs, 11 refs.

关 键 词：道路工程 沥青路面 重载 轴载换算 结构验算 

分 类 号：U416.217[交通运输工程—道路与铁道工程]