不同设计方法下沥青路面疲劳寿命对比  

Comparisons on the Fatigue Life of Asphalt Pavement under Different Design Method

作　　者：黄育华 黄克旺 李浩 HUANG Yu-hua;HUANG Ke-wang;LI Hao(Research and Development Center on Road Transport Safety and Emergency Support Technology ＆ Equipment,Ministry of Transport,Ouangzhou 510420,China;Guangdong Hualu Communications Technology Co.Ltd,Guangzhou 510420)

机构地区：[1]公路交通安全与应急保障技术及装备交通运输行业研发中心,广州市510420 [2]广东华路交通科技有限公司,广州市510420

出　　处：《公路》2018年第9期32-36,共5页Highway

基　　金：广东省交通运输厅科技项目,科技-2012-02-011

摘　　要：以广东省云罗高速公路长寿命无机结合料稳定类基层沥青路面试验路结构型式为基础,对比分析了我国2006版、2017版《公路沥青路面设计规范》和壳牌（SHELL）设计法中的7个设计指标在无机结合料稳定类基层沥青路面上基层模量变化时的力学响应结果,并根据不同规范疲劳寿命的计算方法分别对其进行了计算和分析。结果表明：对于文中选定结构型式疲劳寿命的计算,我国2006版设计规范起控制作用的主要是基层底纵向拉应力,在此基础上,2017版设计规范增加了沥青层永久变形量这一双重控制指标,因而较2006版设计规范更为安全;壳牌设计法不适用于我国无机结合料稳定类基层沥青路面疲劳寿命的计算。Based on the structure of the asphalt pavement test road of the long-life inorganic binder for the Yunfu-Luoding Expressway in Guangdong Province,comparisons and analysis are made to the mechanical response results when the modulus changing at the base course of stable inorganic binder type asphalt based on the 2006 edition and 2017 edition of the Specifications for Design of Highway Asphalt Pavement and SHELL design method of the seven indicators,and calculation and analysis are conducted respectively according to the different specification the calculation method of fatigue life.Results show that the selected structure fatigue life calculation for the purpose of this research,the 2006 edition of the design specification mainly control bottom longitudinal tensile stress at the base course,on this conclusion,the 2017 edition of the design specification has increased the permanent deformation of asphalt layer double control index,thus the 2006 edition of the design specification is more safe;SHELL design method is not suitable for the calculation of fatigue life of the base asphalt pavement of Chinas inorganic binder.

关 键 词：道路工程 沥青路面 疲劳寿命 基层模量 力学响应 

分 类 号：U416.217[交通运输工程—道路与铁道工程]