All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Model Uncertainties and Global Safety Formats for Reinforced Concrete Design by Numerical Simulation

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28399269%3A_____%2F19%3AN0000017" target="_blank" >RIV/28399269:_____/19:N0000017 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.researchgate.net/publication/334466417_Model_Uncertainties_and_Global_Safety_Formats_for_Reinforced_Concrete_Design_by_Numerical_Simulation" target="_blank" >https://www.researchgate.net/publication/334466417_Model_Uncertainties_and_Global_Safety_Formats_for_Reinforced_Concrete_Design_by_Numerical_Simulation</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Model Uncertainties and Global Safety Formats for Reinforced Concrete Design by Numerical Simulation

  • Original language description

    Authors are actively involved in the technical committees preparing the new Eurocodes for reinforced concrete design as well as the new fib model code 2020. The simulation by nonlinear analysis is being used by engineers for the design of reinforced concrete structures, but until recently no suitable safety formats were available. The first concise treatment of this problem has been developed in the international fib model 2010. An important aspect of the reinforced concrete design by simulation is a due estimation of model uncertainties, which are inherently strongly dependent on the software, the numerical approach and the user. A typical feature of the simulation-based design is the global safety format, which is different from a sectional local check in the standard design approach. The sources of uncertainty in the reliability analysis are of two kinds, an aleatory uncertainty of material properties, which can be described by probabilistic models and an epistemic uncertainty of models reflecting a lack of knowledge. The global design formats with different levels of probabilistic approximation are discussed and compared. A general method for the assessment of the model uncertainty is proposed and an example is presented for a particular resistance model. A set of 33 laboratory tests of reinforced concrete elements by other authors are used for the model validation and for the determination of the model uncertainty. It covers a wide range of failure modes of concrete structures, from brittle to ductile, and the member cross section sizes ranging from 0.1 to 4 m. This means that a size effect is well reflected as well. The numerical model used for the simulation is the fracture-plastic constitutive model for concrete developed by the authors and implemented in a nonlinear finite element analysis commercial software. The proposed method can be used as a general framework for the calibration of the model uncertainty factor to be used within the framework of the global safety formats for reinforced concrete design based on numerical simulation.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20102 - Construction engineering, Municipal and structural engineering

Result continuities

  • Project

    <a href="/en/project/7D17001" target="_blank" >7D17001: BIM - based Cyber-physical System for Bridge Assessment</a><br>

  • Continuities

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

Others

  • Publication year

    2019

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    NAFEMS World Congress 2019: Summary of Proceedings

  • ISBN

    978-1-910643-52-5

  • ISSN

  • e-ISSN

  • Number of pages

    20

  • Pages from-to

    nestrankovano

  • Publisher name

    NAFEMS Ltd

  • Place of publication

  • Event location

    Quebec

  • Event date

    Jun 17, 2019

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article