Publication detail

Post-tensioned composite bridge: reliability-based optimization of selected design parameters

SLOWIK, O. LEHKÝ, D. ŠOMODÍKOVÁ, M.

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 analysed 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.

Released

28. 1. 2016

Publisher

Vysoké Učení Technické v Brně

Location

Brno

ISBN

978-80-214-5311-1

Book

Junoirstav 2016

Pages from

1

Pages to

7

Pages count

7

BibTex

@inproceedings{BUT124245,
  author="Ondřej {Slowik} and David {Lehký} and Martina {Sadílková Šomodíková}",
  title="Post-tensioned composite bridge: reliability-based optimization of selected design parameters",
  booktitle="Junoirstav 2016",
  year="2016",
  pages="1--7",
  publisher="Vysoké Učení Technické v Brně",
  address="Brno",
  isbn="978-80-214-5311-1"
}