基于实测的高速公路重载交通轴载分析  

Analysis Based on Measured Traffic Load of Heavy-loaded Traffic Highway

作　　者：吴正光[1] 王超[1] 沈燕[1] 伏伟俐 

机构地区：[1]扬州大学建筑科学与工程学院,扬州225127

出　　处：《科学技术与工程》2017年第27期303-308,共6页Science Technology and Engineering

基　　金：国家自然科学基金(51108402);江苏交通控股有限公司科技项目;江苏省研究生培养创新工程项目(KYLX16_1392)资助

摘　　要：通过调查京沪高速公路沂淮江段动态称重系统的交通轴载数据,研究了该路段交通荷载参数、货车的超载情况以及交通轴载谱。根据分析结果提出了以单轴双轮120 k N作为高速公路重载交通沥青路面的设计轴载、轮胎接地压强0.85 MPa为设计荷载;发现用正态分布模型表征该路段单轴双轮轴载谱(R^2=0.95),能够比较真实地反映该路段的荷载特性,提出以该模型作为随机荷载的加载方案;并使用简化的荷载分布作为室内试验进行变幅荷载的加载方案。Abstract： Through collecting the traffic load data of the weigh-in-motion system from Xinyi to Jiangdu on the Beijing-Shanghai highway. After study and analysis the traffic load parameters,overload condition of truck,and the traffic axle load spectrum of the road section. The results show that use of 120 k N and 0. 85 MPa as design of axial load and design load for asphalt roadbed of highway under heavy-duty traffic. Then a normal distribution model could truly reflect the traffic load which characteristics correlation coefficient is 0. 95 was proposed to be the stochastic assignment model and characterize axle load spectrum of uniaxial two-wheel. Finally,a load distribution was compiled to be the varying amplitude loading scheme for laboratory experiment.

关 键 词：动态称重系统 交通荷载参数 设计荷载 荷载分布 

分 类 号：U491.11[交通运输工程—交通运输规划与管理]