Optimising Surveys and Reliability Assessments of Historic Cast-Iron Columns

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F18%3A00326108" target="_blank" >RIV/68407700:21610/18:00326108 - isvavai.cz</a>

Result on the web

<a href="https://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/175/36908" target="_blank" >https://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/175/36908</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2495/HPSM180081" target="_blank" >10.2495/HPSM180081</a>

Result language

angličtina

Original language name

Optimising Surveys and Reliability Assessments of Historic Cast-Iron Columns

Original language description

ast iron structures mostly date back to the second half of the 19th century. Material properties vary due to different composition and production techniques that have been used in different regions over decades. This is why it is of crucial importance to obtain case-specific information on properties of historic structures. Many historic metal structures do not fulfil requirements of present standards. Decisions about adequate construction interventions should be based on complex assessment of structural reliability. In this contribution, the material properties of an iron column are investigated and the key considerations for reliability assessment are presented. Three fundamental issues are addressed to optimise surveys and reliability assessments of cast iron columns: 1) an optimum number of material tests; 2) the selection between a finite element (FE) and analytical model; and 3) the target reliability level for a historic structure. It is shown that uncertainties due to limited test data, variability of material and geometrical properties, and resistance model uncertainty can be treated by a semi-probabilistic verification method. As a first approximation, five tensile tests might be considered as an optimum survey strategy. The application of FE models is more demanding than that of simplified analytical formulas, but it can better reflect structure-specific conditions and may increase structural resistance by about 15%. Optimum target reliability level for existing structures with a cultural heritage value could be lower than that for structural design and the assessment value of resistance may increase by about 20% for a reduced target level.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/DG16P02M050" target="_blank" >DG16P02M050: Optimisation of observations and assessment of heritage structures</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Article name in the collection

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

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Number of pages

12

Pages from-to

71-82

Publisher name

WIT Press, Ashurst Lodge

Place of publication

Southampton

Event location

Ljubljana

Event date

Jul 11, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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