# [1]李志刚,邓小勇.动载作用下沥青路面内部孔隙水压力的轴对称弹性解[J].东南大学学报(自然科学版),2008,38(5):804-810.[doi:10.3969/j.issn.1001-0505.2008.05.013] 　Li Zhigang,Deng Xiaoyong.Axial symmetric elastic solution of pore water pressure in asphalt pavement under mobile load[J].Journal of Southeast University (Natural Science Edition),2008,38(5):804-810.[doi:10.3969/j.issn.1001-0505.2008.05.013] 点击复制 动载作用下沥青路面内部孔隙水压力的轴对称弹性解() 分享到： var jiathis_config = { data_track_clickback: true };

38

2008年第5期

804-810

2008-09-20

## 文章信息/Info

Title:
Axial symmetric elastic solution of pore water pressure in asphalt pavement under mobile load

Author(s):
Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China

Keywords:

U416.217
DOI:
10.3969/j.issn.1001-0505.2008.05.013

Abstract:
Regarding asphalt pavement as an axial symmetrical body of multilayered saturation elastic half space, the fundamental thermal Biot consolidation theory and seepage flow equations are introduced. By using mathematical method the mechanical model of water damage of the asphalt pavement is derived. And the following assumptions are made: except for penetrability, the asphalt concrete is a kind of ideal stretch material being homogeneous and entirely saturated; the distortion of asphalt concrete is tiny; the asphalt concrete and the pore water can not be compressed; the pore water seepage flow submits to the law of Daxi, and the penetrating quotiety is constant. The pore water pressure in asphalt pavement is calculated based on some mathematic methods such as Hankel and Laplace integral transformations. Calculation results indicate that the pore water pressure in the inner asphalt pavement has close relation to permeation coefficient of surface, thickness of surface, material parameter and wheel speed etc. Pore fluid stress at the interface between surface layer and base layer of the flexible pavement is maximum when the pore of pavement is full of water, under the action of load. Under the iterative action of load, the pavement fatigue cracking may occur, which accelerates the appearing of breakage of pavement.

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