Ultimate Load Capacity of Multi-Story Steel Frame Structures with Geometrical Imperfections: A Comparative Study of Two Methods

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU150208" target="_blank" >RIV/00216305:26110/23:PU150208 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/chapter/10.1007/978-3-031-44603-0_15" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-031-44603-0_15</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-44603-0_15" target="_blank" >10.1007/978-3-031-44603-0_15</a>

Result language

angličtina

Original language name

Ultimate Load Capacity of Multi-Story Steel Frame Structures with Geometrical Imperfections: A Comparative Study of Two Methods

Original language description

This study presents two methods for analyzing the ultimate load capacity of a multi-story steel frame structure with geometric imperfections and material nonlinearities. The first method is in accordance with European standard (EC) for steel structures, based on which the initial geometrical imperfections (out-of-straightness and out-of-plumb) are determined. In the second method, the first order reliability method (FORM) is utilized in order to determine the ultimate design resistance. In this second approach, the initial geometrical imperfections are based on European standard for allowed manufacturer tolerances, and are considered as statistical parameters. Local bow-imperfection amplitudes of each column (in both directions), global sways of each floor (in two directions), as well as material elastic modulus and yield stress are considered as stochastic variables (together 80 random input parameters). Cumulative tolerances of each story position are monitored and random realizations which violate these tolerances are distinguished. The results of both methods are summarized and compared in the matter of the ultimate resistances: design value according to EC vs. 0.1% quantile of stochastic ultimate resistance out of the FORM method. Failure modes of the random realizations are discussed as well. Overall, both methods resulted in comparable values of the ultimate resistances, with the design value based on EC standard being slightly more conservative then the value based on the FORM method.

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/GA23-04712S" target="_blank" >GA23-04712S: Importance of Stochastic Interactions in Computational Models of Structural Mechanics</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Article name in the collection

Lecture Notes in Civil Engineering

ISBN

978-3-031-44603-0

ISSN

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e-ISSN

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Number of pages

10

Pages from-to

154-163

Publisher name

Springer Cham

Place of publication

neuveden

Event location

Vilnius

Event date

Oct 5, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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