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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 30
DEVELOPMENTS IN COMPUTER AIDED DESIGN AND MODELLING FOR CIVIL ENGINEERING
Edited by: B.H.V. Topping
Paper VIII.4

Stress Reduction in Laterally Loaded Precast Concrete Pavements by Means of Steel Edge Surrounds: Numerical Analysis

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

*Department of Civil Engineering, #Computing Services
University of Newcastle upon Tyne, UK

Full Bibliographic Reference for this paper
J.W. Bull, C.H. Woodford, "Stress Reduction in Laterally Loaded Precast Concrete Pavements by Means of Steel Edge Surrounds: Numerical Analysis", in B.H.V. Topping, (Editor), "Developments in Computer Aided Design and Modelling for Civil Engineering", Civil-Comp Press, Edinburgh, UK, pp 203-210, 1995. doi:10.4203/ccp.30.8.4
Abstract
The numerical analysis of two precast concrete raft units, used as a pavement surface, is described. The raft units were fully supported by bedding sand, subbase and subgrade pavement layers. One raft unit had a 140mm deep and l0mm thick steel collar rigidly attached to its four vertical sides. The other raft unit had no steel collar. The raft units were subjected to a series of single and twin, aircraft type wheel loadings. The major effect of adding a steel collar was to reduce the concrete tensile stress. The stress reduction gave an average increase in raft unit loading repetitions to failure of 48 percent for the single wheel load and 106 percent for the twin wheel load.

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