Detail publikačního výsledku

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

SLOWIK, O.; LEHKÝ, D.; ŠOMODÍKOVÁ, M.

Originální název

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

Anglický název

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

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Reliability based optimization; double-loop method; small-sample simulation; failure probability; reliability index; load-bearing capacity

Klíčová slova v angličtině

Reliability based optimization; double-loop method; small-sample simulation; failure probability; reliability index; load-bearing capacity

Autoři

SLOWIK, O.; LEHKÝ, D.; ŠOMODÍKOVÁ, M.

Rok RIV

2017

Vydáno

28.01.2016

Nakladatel

Vysoké Učení Technické v Brně

Místo

Brno

ISBN

978-80-214-5311-1

Kniha

Junoirstav 2016

Strany od

1

Strany do

7

Strany počet

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"
}