路面平整度PSD和IRI评价方法比较-交通运输工程学报-长安大学.pdf

第8 卷　第1期 交 通 运 输 工 程 学 报 Vol.8　No.1 2008 年2 月 Journal of T raffic and Transportation Engineering Feb.2008 :1671-1637(2008)01-0036-06 SD IRI 吴庆雄, 陈宝春, 奚灵智 ( , 　350002) 　:为了分析路面平整度 率谱法(SD)和国际平整度指数法(IRI)之间的关系, 采用 AR 模 型模拟满足路面平整度 率谱的路面不平整状态,采用Newmark β法计算国际平整度指数,采用 最小二乘法得到了 SD 法与IRI 法之间的关系方程式。研究结果表明:IRI 值与路面平度系数的 关系为幂函数式,为了与《公路工程质量检验评定标准》(JTG F80/1-2004)所规定的IRI 值相对应, 建议在《公路养护技术规范》(JT J 073-96)的路面平整度评定等级中增加“极优”项目。 :路面工程;路面平整度;时域分析; 率谱;国际平整度指数;关系方程式 :U416.0　　　:A Comparison of PSD method and IRI method for road roughness evaluation Wu Qing-xiong, Chen Bao-chun, Xi Ling-zhi (School of Civil Engineering, Fuzhou University, Fuzhou 350002, Fujian, China) Abstract:In order to analyze the relationship between power spectral density (SD)method and international roughness index (IRI)method in evaluating road roughness, AR model was adopted to simulate road roughness condition for satisfying SD, and Newmark βmethod was employed to calculate IRI values, the relationship formula between SD method and IRI method was determined by using least square method.A nalysis result show s that the relationship between IRI value and road roughness coefficient meets power function, and to correspond to IRI values in quality inspection and evaluation standards f or highway engineering (JTG F80/1-2004 ), a “very good ” item of road roughness evaluation should be complemented into technical specif ications of maintenancef or highway (JTJ 073-96).6 tabs, 10 figs, 20 refs. Key words:pavement engineering;road roughness;time domain analysis;power spectral density;international roughness index;relationship formula + Author resume:Wu Qing-xiong (1973-), male, hD, associate researcher, 86-59