【作者】 王丽君；

【导师】 张锋；

【作者基本信息】 哈尔滨工业大学 ， 交通运输工程（专业学位）， 2018， 硕士

【摘要】 随着我国经济快速发展,机动车越来越多,许多道路已经早早超过了当初设计的交通流量及荷载,再加地下综合管廊施工,有些沥青路面结构在设计年限内就发生了早期疲劳破坏。如何防止沥青路面过早出现疲劳破坏、提高沥青路面的可靠性已成为城市道路和许多高等级公路中亟待解决的问题。本文主要以济南市旅游路工程项目为研究对象,采用ABAQUS有限元软件,分析了正常荷载作用、超载作用、正常荷载与地下综合管廊耦合作用和超载与地下综合管廊耦合作用四种工况分别作用下的沥青路面的力学响应特性;并结合计算结果,用以指导该路段路基路面的设计与施工。主要研究内容包括:建立了正常荷载作用、超载作用、正常荷载与地下综合管廊耦合作用和超载与地下综合管廊耦合作用下四种工况的沥青路面结构力学响应分析模型,通过计算分析了沥青混凝土层、水泥稳定碎石层、石灰稳定碎石层和路基层在上述四种工况下的应力和应变变化规律,以及各结构层受四种工况作用的影响程度。基于超载与地下综合管廊耦合作用下道路的有限元结构模型,通过各结构层的弹性模量和泊松比,分析了不同参数的材料对道路结构层变形的影响。以济南市旅游路工程为案例,分析了地下综合管廊路段道路设计、施工、质量保状况。更多还原

【Abstract】 With the rapid economic development of our country,more and more automobiles existing,many roads have already been damaged because of excessive traffic flow,overload and construction of utility tunnel,some asphalt pavement structures have been subjected to fatigue damage early in the design period.How to prevent fatigue damage early and improve the durability of asphalt pavement has become an urgent problem in urban roads and many high-grade highways.The west section of Tourist Road in Ji’nan is taked as the research object in this paper,and is analyzed the mechanical characteristics of the asphalt pavement under standard automobile load,overload,the coupling of standard automobile load and utility tunnel,the coupling of overload and utility tunnel,respectively.The main contents of the research are as follows:1)Based on ABAQUS finite element method,four asphalt pavement models of standard automobile load,overload,the coupling of standard automobile load and utility tunnel,the coupling of overload and utility tunnel are established,and the stress-strain characteristic in pavement is analyzed.2)The stress-strain characteristic in four pavement layers of asphalt concrete mixture,cement stabilized macadam,limestone stabilized macadam and subgrade soil based on above four FEM models is discussed,the influence of four working conditions on four pavement layers is analyzed.3)Based on finite element model of the asphalt pavement under the coupling of overload and utility tunnel,different values of Young’s modulus and poisson ratio in four pavement layers are adopted,the strain influence in asphalt pavement layers with different material parameters is analyzed which is compared with each other4)Based on the case of tourist road in Jinan,design,construction and quality assurance of road with utility tunnel are analysed.更多还原