荒漠地区耐久性沥青路面结构设计指标与路面结构力学分析

doi:10.3969/j.issn.1000-1565.2016.06.003

河北大学学报(自然科学版) ›› 2016, Vol. 36 ›› Issue (6): 574-582.DOI: 10.3969/j.issn.1000-1565.2016.06.003

荒漠地区耐久性沥青路面结构设计指标与路面结构力学分析

杨三强¹,刘娜²,张帅¹,杜二霞¹

收稿日期:2016-04-07 出版日期:2016-11-25 发布日期:2016-11-25
作者简介:杨三强(1980—),男,四川绵阳人,河北大学教授,博士,主要从事路基、路面结构与材料方向研究. E-mail:ysq0999@163.com
基金资助:
河北省教育厅自然科学基金重点项目(ZD2016073)

Analysis of design index and structural mechanics of durabble asphalt pavement in desert areas

YANG Sanqiang¹,LIU Na²,ZHANG Shuai¹,DU Erxia¹

1.College of Civil and Architectural Engineering, Hebei University, Baoding 071002, China; 2.Department of Personnel, Hebei University, Baoding 071002, China

Received:2016-04-07 Online:2016-11-25 Published:2016-11-25

摘要/Abstract

摘要： 通过分析荒漠地区恶劣自然环境下的重荷载交通沥青路面使用状况,采用有限元分析,提出了采用路面性能指数PCI、路表面弯沉与路面车辙作为路面结构的设计指标;得出了荒漠地区耐久性沥青路面结构受力分布.结果表明:不同轴载作用下路表最大竖向变形与轴载近似成线性关系,随着轴载的增大,最大竖向变形逐渐增大;路表最大拉应力以轮轴线呈现对称分布;路面结构层内的剪应力随着深度增加而增大,在距路表5 cm处剪应力达到峰值.研究成果可为荒漠地区耐久性沥青路面选材与结构设计提供科学的理论支撑与技术指导.

关键词: 耐久性, 沥青路面, 结构设计, 力学分析

Abstract: In this paper,pavement performance index PCI,road surface deflection and pavement rutting are proposed as the design indexes of pavement structure by analyzing the desert region harsh natural environment under heavy load traffic asphalt pavement condition and using finite element analysis.We obtained the durability of the desert region asphalt pavement structure stress distribution.The results showed that different wheel load on road surface and the maximum vertical deformation has an approximate linear relationship.Along with increase of the axial load,the maximum vertical deformation gradually increases.The maximum tensile stress of the road surface is symmetrical distributed with the wheel axis.The shear stress in the pavement structure increases with the increase of depth,and the shear stress recches peak value at 5 cm away from road sorface.The research results can provide theoretical support and technical guidance for the selection and structural design of the asphalt pavement in the desert region.

Key words: durability, asphalt pavement, structure design, mechanics analysis

中图分类号:

U419.91

杨三强,刘娜,张帅,杜二霞. 荒漠地区耐久性沥青路面结构设计指标与路面结构力学分析[J]. 河北大学学报(自然科学版), 2016, 36(6): 574-582.

YANG Sanqiang,LIU Na,ZHANG Shuai,DU Erxia. Analysis of design index and structural mechanics of durabble asphalt pavement in desert areas[J]. Journal of Hebei University (Natural Science Edition), 2016, 36(6): 574-582.

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荒漠地区耐久性沥青路面结构设计指标与路面结构力学分析

Analysis of design index and structural mechanics of durabble asphalt pavement in desert areas

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