Loading stress analysis of double-layered cement concrete pavement structure based on thin shell element

被引：0
|
作者：
Zhou Y. [1 ]
Tan Z. [1 ]
Tian B. [2 ]
机构：
[1] Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University
[2] Highway Research Institute of the Ministry
来源：
Tongji Daxue Xuebao/Journal of Tongji University | 2010年 / 38卷 / 05期
关键词：
Base extension; Cement concrete pavement; Maximum loading stress; Road engineering; Shell element; Solid element;
D O I：
10.3969/j.issn.0253-374x.2010.05.010
中图分类号：
学科分类号：
摘要：
The cement concrete pavement on rigid or semi-rigid base is hereof simplified as a model of double-layered structure with unequal planar dimensions resting on an elastic foundation under axle (tire) load by using thin shell element. The relationship between element meshing size and result accuracy is discussed. The locations and magnitudes of the maximum loading stresses in pavement structure under moving axle load along longitudinal edge are thoroughly studied. The effects of base extension on the maximum loading stresses in pavement and base are also analyzed. Results show that with the increase of the base extended amount, the maximum loading stress in pavement will drop 0~33%; whereas the maximum stress in base will increase remarkably. Furthermore, the difference of the maximum loading stresses in pavement and base by using shell element and solid element is compared, when the thicknesses of pavement exceeding a limited value, the maximum stress in pavement based upon shell element is larger by 0~20% than that of solid element; but in base is smaller by 2%~30%. Finally, the modified coefficient for the maximum stresses in pavement and base by using shell element is provided.
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页码：685 / 691
页数：6
相关论文
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