Layered Pavement Systems. Part I. Layered System Design. Part II. Fatigue of Plain Concrete.
Technical rept. Apr 70-Mar 71,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
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The report describes a recent Naval Civil Engineering Laboratory study of airfield pavement overlay design that indicates that elastic layered analysis may be a better design approach than any other currently available technique. A finite element theory of analysis has been developed that considers horizontal sliding between layers, and the superimposed load effects of multiple-wheel landing gear. This theory also provides for automatic finite element mesh generation, and automatic plotting of stress, strain, and displacement output data. The report also presents a review of the literature about fatigue of plain concrete. It reveals information about beam and cylinder testing but discloses no conclusive experimental work on the fatigue behavior of uniformly supported pavement slabs. Fatigue behavior estimates based upon beam and cylinder tests would necessarily have to be conservative and therefore self-defeating insofar as achieving economy of design by adoption of minimum feasible thickness of pavement slab overlays. Author
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