Technical Papers
Jan 16, 2014

Integrative Sensitivity Analysis Applied to Semi-Integral Concrete Bridges

Publication: Journal of Bridge Engineering
Volume 19, Issue 6

Abstract

In numerical simulations of engineering structures, several physical phenomena are represented by partial models, and the selection of the important partial models is usually based on engineering judgment. The quantitative assessment of how these partial models influence various response quantities is possible using variance-based sensitivity analysis. However, this provides information only on local positions in the structure. The present paper extends the sensitivity analysis at local positions to the integrative sensitivity analysis of the entire structural load-bearing behavior. In addition to the assessment of the partial model’s sensitivity, the method includes the local response significance factor, which relates the sensitivity to the response significance at each position in the structure. The integrative sensitivity analysis is applied to the numerical simulation of semi-integral concrete bridges to evaluate the partial model’s influence with respect to the entire integral structure. The quantitative assessment of the integrative sensitivity for varying pier heights and different loading conditions in the serviceability limit state and the ultimate limit state allows conclusions with practical engineering relevance.

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Acknowledgments

This research is supported by the German Research Foundation (DFG) via research training group “Assessment of Coupled Experimental and Numerical Partial Models in Structural Engineering (GRK 1462),” which is gratefully acknowledged by B. Jung and G. Morgenthal. The close collaboration between Bauhaus-Universität Weimar and Tongji University is also acknowledged. In addition, B. Jung thanks Mr. H. Stutz for the contribution in the pile foundation models.

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Information

Published In

Go to Journal of Bridge Engineering
Journal of Bridge Engineering
Volume 19Issue 6June 2014

History

Received: Jul 17, 2013
Accepted: Nov 25, 2013
Published online: Jan 16, 2014
Published in print: Jun 1, 2014
Discussion open until: Jun 16, 2014

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Authors

Affiliations

Bastian Jung [email protected]
Ph.D. Student, Research Training Group 1462 “Model Quality,” Bauhaus-Universität Weimar, 99423 Weimar, Germany (corresponding author). E-mail: [email protected]
Guido Morgenthal [email protected]
Professor, Dept. of Modelling and Simulation of Structures, Bauhaus-Universität Weimar, 99421 Weimar, Germany. E-mail: [email protected]
Professor, Dept. of Bridge Engineering, Tongji Univ., Shanghai 200092, China. E-mail: [email protected]

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