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SLOWIK, O. LEHKÝ, D. ŠOMODÍKOVÁ, M. NOVÁK, D.
Original Title
Post-tensioned composite bridge: reliability-based optimization of selected design parameters
Type
conference paper
Language
English
Original Abstract
In the paper small-sample double-loop optimization method is employed to find selected design parameters of a single-span post-tensioned composite bridge to ensure its reliability and load-bearing capacity. The selected approach consists in nesting the computation of the failure probability with respect to the current design within the optimization loop. The analyzed bridge is made of precast post-tensioned concrete girders, each composed of six segments that are connected by the transverse joints. Bridge spatial deterioration brings uncertainty into actual values of concrete strength in transversal joints and of actual loss of pre-stressing. Due to their significant effect on the bridge load-bearing capacity, both were considered as uncertain design parameters with the aim to find their critical values corresponding to desired reliability level and load-bearing capacity.
Keywords
Reliability based optimization; double-loop method; small-sample simulation; failure probability; reliability index; load-bearing capacity.
Authors
SLOWIK, O.; LEHKÝ, D.; ŠOMODÍKOVÁ, M.; NOVÁK, D.
RIV year
2015
Released
15. 10. 2015
Publisher
Jendželovský, N. & Grmanová, A.
Location
Bratislava, Slovakia
ISBN
978-80-227-4463-8
Book
Proceedings of the 13th International Conference on New Trends in Statics and Dynamics of Buildings
Pages from
1
Pages to
6
Pages count
BibTex
@inproceedings{BUT117994, author="Ondřej {Slowik} and David {Lehký} and Martina {Sadílková Šomodíková} and Drahomír {Novák}", title="Post-tensioned composite bridge: reliability-based optimization of selected design parameters", booktitle="Proceedings of the 13th International Conference on New Trends in Statics and Dynamics of Buildings", year="2015", pages="1--6", publisher="Jendželovský, N. & Grmanová, A.", address="Bratislava, Slovakia", isbn="978-80-227-4463-8" }