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Title: Use of pasternak foundation model in concrete pavement analysis
Authors: Fwa, T.F. 
Shi, X.P.
Tan, S.A. 
Issue Date: Jul-1996
Source: Fwa, T.F.,Shi, X.P.,Tan, S.A. (1996-07). Use of pasternak foundation model in concrete pavement analysis. Journal of Transportation Engineering 122 (4) : 323-328. ScholarBank@NUS Repository.
Abstract: This parer exarnines the use of Pasternak foundation model in the analysis of load-induced concrete pavement deflections and bending stresses, as well as thermal stresse caused by warping of slabs. Using theoretical solutions developed by the authors for strctural responses of slabs supported on Pasternak foundation, predicted slab deflections and bending stresses are computes and checked against actual field data. The field data, containing pavement responses under applied loads and thermal gradients respectively, are obtained from the results of full-size slab experiments reported in the literature. Satisfactory slab deflection and bending stress predictions by the Pasternak solutions can be obtained by calculating subgrade shear modulus as the product of modulus of subgrade reaction and a coefficien θ. With reference to actual field measurements, the analysis in this study indicates that using a constant θ value of 0.35 m2 in the proposed Pasternak foundation model would achieve 1% to 25% improvements in the accuracy of pavement responses predictions as compared with the corresponding solutions given by models with Winkler foundation.
Source Title: Journal of Transportation Engineering
ISSN: 0733947X
Appears in Collections:Staff Publications

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