Publication detail

Mechanical parameters for numerical modeling of concrete at high temperatures

MATESOVÁ, D. VOŘECHOVSKÝ, M.

Original Title

Mechanical parameters for numerical modeling of concrete at high temperatures

Type

conference paper

Language

English

Original Abstract

Based on the compiled data this paper presents new temperature-dependent relation-ships/functions for concrete strength (compressive and tensile), modulus of elasticity, fracture energy, bulk density and Poisson ratio. The curves are designed on the basis of literature survey published in [1]. Comparison of the designed functions with their counterparts found in existing codes, authoritative design guides and literature is presented. Surprisingly enough, functions for selected parameters (namely fracture energy, Poisson ratio and bulk density) were not found in any code although they are necessary for realistic numerical simulations of structural response. For the practical reasons, relationships proposed in this work are designed as continuous functions whilst data found in codes are presented as discrete points in tables. We believe that an analytical formulation is more friendly for implementation into computational models, e.g. for transient coupled thermal and structural analysis and others. The temperature dependence of parameters is an important ingredient of the safe design and assessment of structures undergoing high tempera-ture loading (fire, etc.).

Keywords

Mechanical parameters, numerical modeling, high temperatures

Authors

MATESOVÁ, D.; VOŘECHOVSKÝ, M.

RIV year

2006

Released

28. 4. 2006

Location

Weimar, Germany

Pages from

17

Pages to

18

Pages count

2

BibTex

@inproceedings{BUT24188,
  author="Dita {Vořechovská} and Miroslav {Vořechovský}",
  title="Mechanical parameters for numerical modeling of concrete at high temperatures",
  booktitle="PhD Workshop Brno, Prague, Weimar",
  year="2006",
  pages="17--18",
  address="Weimar, Germany"
}