中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2018, Vol. 37 ›› Issue (05): 34-40.DOI: 10.3969/j.issn.1674-0696.2018.05.07

• 道路与铁道工程 • 上一篇    下一篇

分层梯度模量微沥青级配碎石对倒装式路面结构的影响

戴文亭,王宇放,王振,王琦   

  1. (吉林大学 交通学院,吉林 长春 130022)
  • 收稿日期:2017-03-13 修回日期:2017-09-23 出版日期:2018-05-15 发布日期:2018-05-15
  • 作者简介:戴文亭(1964—),男,江苏徐州人,教授,博士,主要从事公路工程方面的研究。E-mail:daiwt@jlu.edu.cn。
  • 基金资助:
    国家自然科学基金项目(51178204)

Effect of MicroAsphalt Macadam of Graded Gradient Modulus on the Inverted Pavement Structure

DAI Wenting, WANG Yufang, WANG Zhen, WANG Qi   

  1. (School of Transportation, Jilin University, Changchun 130022, Jilin, P. R. China)
  • Received:2017-03-13 Revised:2017-09-23 Online:2018-05-15 Published:2018-05-15

摘要: 利用ABAQUS有限元软件,建立倒装式沥青路面结构模型,研究了多轴载情况下级配碎石横观各向同性特征对路面结构的影响,并通过设置分层梯度模量的微沥青级配碎石对倒装式路面 结构进行结构优化。研究表明:级配碎石横观各向同性特征明显影响着倒装式路面结构的内部应力与应变,影响到路面的使用寿命,在实际工程中不可以忽略;设置分层梯度模量的微沥青级 配碎石层可减少层间的模量比、形成缓冲区,以缓解级配碎石横观各向同性特征所带来的影响,尤其在重载交通条件下,设置逆向梯度模量的微沥青级配碎石后,其路用关键性指标可减小20 %以上。

关键词: 道路工程, 横观各向同性, 微沥青级配碎石, 分层梯度模量, 优化设计

Abstract: The model of the inverted asphalt pavement structure was established by finite element software ABAQUS. The influence of transversely anisotropy of graded aggregate on the pavement structure under multi-axle load was studied. And the inverted pavement structure was optimized by setting the hierarchical gradient modulus of micro-asphalt graded gravel. The results show that: the transversely anisotropy of micro-asphalt graded gravel has an obvious effect on the internal stress and strain of the inverted asphalt pavement structure as well as the service life of the pavement, which cant be ignored in the actual project; the modulus ratio among layers can be reduced by setting the hierarchical gradient modulus of micro-asphalt graded gravel to form a buffer, in order to alleviate the influence of the transversely anisotropy of micro-asphalt graded gravel; especially in the heavy traffic conditions, the key indicators of road performance can be reduced by more than 20% by setting the transversely anisotropy of micro-asphalt graded gravel.

Key words: highway engineering, anisotropy, micro-asphalt graded gravel, stratified gradient modulus, optimization design

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