Diagnostic Load Testing of Two-Way Posttensioned Concrete Slab
Publication: Practice Periodical on Structural Design and Construction
Volume 6, Issue 2
Abstract
Diagnostic load testing techniques have been used to verify in situ that existing structures have the required load-carrying capacity. This paper discusses the diagnostic load testing and finite-element modeling of a two-way posttensioned concrete slab with the purpose of illustrating the features of this full-scale testing method. The slab was modeled using a commercial finite-element package and the results were verified experimentally. The test loads were applied using hydraulic jacks. Negative internal bending moments were generated at critical locations equivalent to those produced by a 92 psf (4.40 kPa) superimposed uniformly distributed load. Positive internal bending moments were also produced equivalent to those resulting from a superimposed load of 159 psf (7.61 kPa). The full-scale diagnostic load testing proved to be a valuable tool for the assessment of the structure's capacity.
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References
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Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 6 • Issue 2 • May 2001
Pages: 73 - 82
History
Received: Jul 11, 2000
Published online: May 1, 2001
Published in print: May 2001
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