Economically Optimum Structural Design: Methodology and Case Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F18%3A00326359" target="_blank" >RIV/68407700:21610/18:00326359 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/175/36915" target="_blank" >https://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/175/36915</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2495/HPSM180151" target="_blank" >10.2495/HPSM180151</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Economically Optimum Structural Design: Methodology and Case Study

Popis výsledku v původním jazyce

Codes of practice aim to assure structures have acceptable risks to the public and the minimum total costs over the working life of a design. However, current codified criteria for structural design correspond to a broad range of reliability levels, specified for dissimilar reference periods even though their recalculation for different periods is uncertain due to unknown dependence of failure events in time. In this contribution, target reliability levels are specified on the basis of probabilistic risk optimization considering the objective function as a sum of various costs including effects of time to failure and discounting. A case study presents probabilistic optimization of the roof of a stadium for 4,000 spectators and illustrates the effect of the considered input parameters. Failure consequences and relative cost of safety measure are shown to be major factors affecting the optimum reliability level. Less important factors are the discount rate and working life. Large uncertainty in failure cost estimates seems to have only a marginal effect on derived optimum reliability levels.

Název v anglickém jazyce

Economically Optimum Structural Design: Methodology and Case Study

Popis výsledku anglicky

Codes of practice aim to assure structures have acceptable risks to the public and the minimum total costs over the working life of a design. However, current codified criteria for structural design correspond to a broad range of reliability levels, specified for dissimilar reference periods even though their recalculation for different periods is uncertain due to unknown dependence of failure events in time. In this contribution, target reliability levels are specified on the basis of probabilistic risk optimization considering the objective function as a sum of various costs including effects of time to failure and discounting. A case study presents probabilistic optimization of the roof of a stadium for 4,000 spectators and illustrates the effect of the considered input parameters. Failure consequences and relative cost of safety measure are shown to be major factors affecting the optimum reliability level. Less important factors are the discount rate and working life. Large uncertainty in failure cost estimates seems to have only a marginal effect on derived optimum reliability levels.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of HPSM/OPTI 2018 - the 2018 International Conference on High Performance and Optimum Design of Structures and Materials

ISBN

978-1-78466-289-9

ISSN

1743-3509

e-ISSN

—

Počet stran výsledku

12

Strana od-do

143-154

Název nakladatele

WIT Press, Ashurst Lodge

Místo vydání

Southampton

Místo konání akce

Ljubljana

Datum konání akce

11. 7. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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