Model uncertainty in discrete and smeared crack prediction in RC beams under flexural loads

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28399269%3A_____%2F18%3AN0000014" target="_blank" >RIV/28399269:_____/18:N0000014 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0013794418302431#" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013794418302431#</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfracmech.2018.06.006" target="_blank" >10.1016/j.engfracmech.2018.06.006</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Model uncertainty in discrete and smeared crack prediction in RC beams under flexural loads

Popis výsledku v původním jazyce

Advanced non-linear finite element models are currently available to perform the design of concrete structures. The development and calibration of the safety factors for the next generation of design guidelines will require a deep understanding of the uncertainty associated with such models. This paper presents a first study focusing on the assessment of the uncertainty of discrete and smeared crack models applied to the simulation of the behaviour of RC beams under flexural loads. The discrete strong discontinuity approach (DSDA) and the smeared crack model available in ATENA were chosen for this purpose. Experimental data for mean and maximum crack widths, and average crack spacing for four beams were used as reference. The mesh size dependency and its relation with the uncertainty in the prediction of deflections, crack openings and spacing was investigated. The model uncertainty of mean and maximum crack widths was evaluated for progressive load stages of serviceability conditions for the two crack models considering subsets of data based on the reinforcement ratios and concrete cover.

Název v anglickém jazyce

Model uncertainty in discrete and smeared crack prediction in RC beams under flexural loads

Popis výsledku anglicky

Advanced non-linear finite element models are currently available to perform the design of concrete structures. The development and calibration of the safety factors for the next generation of design guidelines will require a deep understanding of the uncertainty associated with such models. This paper presents a first study focusing on the assessment of the uncertainty of discrete and smeared crack models applied to the simulation of the behaviour of RC beams under flexural loads. The discrete strong discontinuity approach (DSDA) and the smeared crack model available in ATENA were chosen for this purpose. Experimental data for mean and maximum crack widths, and average crack spacing for four beams were used as reference. The mesh size dependency and its relation with the uncertainty in the prediction of deflections, crack openings and spacing was investigated. The model uncertainty of mean and maximum crack widths was evaluated for progressive load stages of serviceability conditions for the two crack models considering subsets of data based on the reinforcement ratios and concrete cover.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA16-04132S" target="_blank" >GA16-04132S: Epistemické nejistoty modelů trhlin v železobetonových konstrukcích</a><br>

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 periodika

Engineering Fracture Mechanics

ISSN

00137944

e-ISSN

—

Svazek periodika

199

Číslo periodika v rámci svazku

08/2018

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

532-543

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85048801050