[1]闫卫红,孟枫林,董忠红..移动荷载下半刚性基层沥青路面剪应变研究[J].郑州大学学报(工学版),2010,31(02):51.
　YAN Weihong,MENG Fenglin,DONG Zhonghong.Study on the Shearing Strain of the Semi——Rigid Base Asphalt Pavement under Moving Load[J].Journal of Zhengzhou University (Engineering Science),2010,31(02):51.
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移动荷载下半刚性基层沥青路面剪应变研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
31卷
期数:
2010年02期
页码:
51
栏目:
出版日期:
2010-02-02

文章信息/Info

Title:
Study on the Shearing Strain of the Semi——Rigid Base Asphalt Pavement under Moving Load
作者:
闫卫红; 孟枫林; 董忠红.
河南省交通规划勘察设计院,河南,郑州,450052, 河南德郑高速公路有限公司,河南,开封,475200, 长安大学,道路施工与装备教育部重点试验室,陕西,西安,710064
Author(s):
YAN Weihong; MENG Fenglin; DONG Zhonghong
1．Henan Provincial Communications Planning Survey＆Design Institute，Zhengzhou 450052，China；2．Henan Provincial De—Zheng Expressway Co．Ltd．Kaifeng 475200，China；3．Key Laboratory for Highway Construction Technology and Equipment ofthe Ministry ofEducation，Chang’an University。Xi’an 710064，China
关键词:
道路工程;  剪应变;  动力响应;  轴重;  速度;  胎压
Keywords:
road engineering; shearing strain; dynamic response; axle load; speed; tire pressu
文献标志码:
A
摘要:
为了研究半刚性基层沥青路面早期破坏现象,采用移动荷载下黏弹性层状体系动力学模型,分析典型路面结构的动力响应,研究轴重、速度和胎压对面层底部剪应变和面层内部剪应变分布的影响.结果发现,随着轴重和胎压的增加,当速度减小时,面层内部剪应变和面层底部剪应变均增加;轴重较小时,车辆对路面产生的破坏主要发生在上中面层,而轴重较大时,产生的破坏主要发生在中下面层:胎压的变化对2-8 em深度范围内的剪应变影响严重,随着胎压的升高,出现最大剪应变的深度位置减小.
Abstract:
To study the premature disruption of the semi—rigid base asphalt pavement，a multi—layer viscoe·lastic dynamic model where the vehicle load is handled as moving load was used to analysis the dynamic re—sponse of the typical semi—rigid base asphalt pavement，and the influences of the axle load，the vehicle speedand the tire pressure on the shearing strain at the bottom of the AC layer and the shearing strain distribution inthe AC layer were studied．It showed that the shearing strains increase with the increase of the axle load andthe tire pressure，and increase with the decrease of the vehicle speed．Especially，when the axle load is rathersmall，the destory of the vehicle exerting on the pavement is mainly took place at the wearing surface layer andthe middle surface layer，while when the axle load is rather big，the destory is mainly set at the middle Surfacelayer and the low surface layer．The tire pressure has a notable influence on the shearing strain at the depthrange from 2cm to 8cm．With the increase of the tire pressure，the depth where the maximum shearing strainoccures becomes shallower．

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更新日期/Last Update: 1900-01-01