基于随机摄动理论的沥青路面结构可靠度分析  

RELIABILITY ANALYSIS OF ASPHALT PAVEMENT STRUCTURE BASED ON STOCHASTIC PERTURBATION THEORY

作　　者：宋云连[1] 林敏[1] 李翀鹏[1] 

机构地区：[1]内蒙古工业大学建工学院,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2008年第3期219-224,共6页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：留学回国人员科研启动基金(教外司留[2006]331);内蒙古自治区高等学校科学研究项目(NJZY08060)

摘　　要：考虑沥青路面结构设计参数的随机变异性,运用随机摄动理论和结构可靠度方法,研究以弯沉为控制指标的沥青路面结构可靠度.当把设计参数看作随机变量,并取不同随机波动值时,可得出路面结构可靠指标β对其的敏感程度,从而确定这些随机变量对路面结构的重要程度.计算结果表明,被换算车型的轴载P和中层厚度H2随机变量对β的影响最大,影响次之的有面层厚度H1、土基模量E0、荷载作用次数n、车道分布系数η、基层模量E2、面层模量E1等随机变量.The asphalt pavement structural reliability is analyzed by use of stochastic perturbation theory and structural reliability method. For calculating the asphalt pavement structural reliability index β,deflection is taken as the control index,and asphalt pavement structural design parameters are taken as random variables. The sensitivity of β to these random variables can be calculated. The importance of each random variable to β can also be defined. Calculated results show that the random variables of axis vehicle load P and thickness H2 of road base have the greatest effect on β. Next to them are thickness H1 of surface,soil elastic module E0, number of load action times n, roadway landscape orientation coefficient η,elastic module E2of road base, and elastic module E1of surface, and so on.

关 键 词：沥青路面 结构可靠度 随机摄动理论 敏感性 

分 类 号：U416.217[交通运输工程—道路与铁道工程]