Dynamic Assessment of Curved Cable-Stayed Bridge by Model Updating
Publication: Journal of Structural Engineering
Volume 126, Issue 2
Abstract
Bridges are indispensable components of the infrastructure of modern society, and their assessment via techniques of structural dynamics is assuming greater importance. This assessment concerns performance of the as-built structure compared to the design and can also extend to the assessment of structural deterioration or damage. Simple validation of numerical results by dynamic testing has met some success; however, feedback from testing into analysis is usually crude, and only recently have systematic techniques been developed that can be supplied to such structures. This paper investigates the application of sensitivity-based model updating technology to the dynamic assessment of the Safti Link Bridge, a curved cable-stayed bridge in Singapore. Based on the measured modal data from prototype testing, the simulated dynamic properties obtained via finite-element analysis have been significantly improved by modification of uncertain structural parameters such as Young's modulus of concrete and structural geometry.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 126 • Issue 2 • February 2000
Pages: 252 - 260
History
Received: Apr 5, 1999
Published online: Feb 1, 2000
Published in print: Feb 2000
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