摘要
反射裂缝是半刚性基层沥青路面和刚性基层沥青路面的主要病害之一.针对这一问题,提出了采用开级配大粒径沥青碎石混合料（Open-graded Large Stone asphalt Mixes,简称OLSM）作为裂缝缓解层的方法,利用其大粒径矿料多、沥青含量少及空隙率大的结构特点消散及吸收裂缝处路面结构应力.介绍了开级配大粒径沥青碎石缓解层沥青路面车辆荷载应力的计算原理,以通用有限元软件ABAQUS为基础,采用三维有限元法,对开级配大粒径沥青碎石缓解层沥青路面的车辆荷载应力进行分析,探讨了开级配大粒径沥青碎石缓解层沥青路面结构层参数对其车辆荷载应力的影响规律,明确了开级配大粒径沥青碎石缓解层沥青路面车辆荷载应力的主要影响参数,为寻求开级配大粒径沥青碎石缓解层沥青路面的结构设计方法提供理论基础及依据.
The reflective cracking is one of the main damages of semi-rigid base asphalt pavement and rigid base asphalt pavement.Aiming at this problem,a method of using Open-graded Large Stone asphalt Mixes（OLSM） as the cracking alleviate layer is proposed,large mineral aggregate,low asphalt content and a great deal of voids in OLSM can dissipate or absorb stress and strain around the crack.The calculation principle of the vehicles load stress of lean concrete base asphalt pavement with OLSM has been introduced,on the basis of the software of finite element method（ABAQUS）,3-D Finite Element Method（FEM）is used to analyze the vehicles load stress for OLSM of asphalt pavement,the influence rule of design parameters of asphalt pavement with OLSM are discussed for its vehicles load stress,and the main influence parameters for the vehicles load stress of asphalt pavement with OLSM are clarified.Therefore,the theoretical basis will be offered for the structural design of asphalt pavement with OLSM.
出处
《河北工业大学学报》
CAS
北大核心
2010年第6期100-103,共4页
Journal of Hebei University of Technology
基金
国家西部交通建设科技项目（2006-318-000-05）
关键词
道路工程
OLSM
三维有限元
车辆荷载应力
空隙率
road engineering
open-graded large stone asphalt mixes
3-D finite element
vehicles load stress
percentage of voids
