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The effect of large subgrade voids on the fatigue life of runways

Lookup NU author(s): Dr John Bull, Dr Chris Woodford


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This paper assumes that an explosion under a runway causes a large void, a camouflet, to be formed. It considers the effects of a single wheel load moving along the length of the runway and determines the vertical displacement of the runway both with the unfilled void and with the void filled with polystyrene. In particular it considers the effects of the resulting subgrade stresses on the runway's fatigue life. It was found that filling the void made little difference to the displacements or to the fatigue life of the runway or subgrade. Once a camouflet has been identified, the authors recommend that the camouflet should be dug out and refilled to improve the runway's fatigue life. (C) 2001 Civil-Comp Ltd. and Elsevier Science Ltd. All rights reserved.

Publication metadata

Author(s): Bull JW, Woodford CH

Publication type: Article

Publication status: Published

Journal: Computers & Structures

Year: 2001

Volume: 79

Issue: 26-28

Pages: 2431-2441

ISSN (print): 0045-7949

ISSN (electronic): 1879-2243

Publisher: Pergamon


DOI: 10.1016/S0045-7949(01)00063-3


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