|Table of Contents|

Pore water pressure characteristics of semi-rigid base for cement concrete pavement(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2012年01期
Page:
6-12
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Pore water pressure characteristics of semi-rigid base for cement concrete pavement
Author(s):
SHENG Yan-ping1; CHEN Shuan-fa1; WANG Dong2; WANG Lin-bing2
1.Engineering Research Center of Transportation Materials of Ministry of Education,Chang’an University, Xi’an 710061,Shaanxi,China;2.Department of Civil and Environmental Engineering,Virginia Polytechnic Institute and State University,Blacksburg 24061,Virginia,USA
Keywords:
pavement engineering;  cement concrete pavement;  semi-rigid base;  poroelasticity;  pore water pressure;  numerical simulation
PACS:
U416.216
DOI:
-
Abstract:
The pore water pressure of semi-rigid base for cement concrete pavement was simulated by using finite element analysis software ABAQUS based on poroelasticity,and the distribution laws of pore water pressure along the base depth were calculated under different external loading conditions and pavement structures.Analysis result shows that in water-saturated state,pore water pressure decreases with the increase of surface thickness,surface elastic modulus,base thickness and base permeability,but increases with the increase of base elastic modulus.The elastic moduli of surface and base have no obvious impacts on pore water pressure.Meanwhile,pore water pressure linearly increases with the increase of traffic load.With the same load,denser load distribution impacts pore water pressure distribution more significantly.Loading modes only influence the dissipation of pore water pressure.With the increase of vehicle speed,pore water pressure increases,and its dissipation becomes fast.

References:

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Last Update: 2012-02-28