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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 71
COMPUTATIONAL CIVIL AND STRUCTURAL ENGINEERING
Edited by: G. De Roeck and B.H.V. Topping
Paper XII.1

The Effect of the Tensile Stress in the Subgrades on the Fatigue Life of an Airfield Runway

J.W. Bull+ and C.H. Woodford#

+Engineering Design Centre and the Department of Civil Engineering
#Computing Service, The University, Newcastle upon Tyne, United Kingdom

Full Bibliographic Reference for this paper
J.W. Bull, C.H. Woodford, "The Effect of the Tensile Stress in the Subgrades on the Fatigue Life of an Airfield Runway", in G. De Roeck, B.H.V. Topping, (Editors), "Computational Civil and Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 265-274, 2000. doi:10.4203/ccp.71.12.1
Abstract
The effect of tension and progressive reduction in the strength of the subgrade on the fatigue life of a cement concrete runway is examined. There may be almost no indication on the runway surface that any change has taken place to the runway's load deflection parameters, but significant reductions will have taken place in the fatigue strength of both the subgrade and the runway. The difference in deflections for the filled and the unfilled camouflet differed by no more than 0.5%. Progressive collapse of the camouflet will take place over a period of time. The effect of the camouflet is not restricted to the subgrade zones directly effected by the explosion. Filling the camouflet had little effect on increasing the fatigue Me of the runway.

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