Publication detail

Timber beams with external strengthening based on CFRP and GFRP composites

KARMAZÍNOVÁ, M.

Original Title

Timber beams with external strengthening based on CFRP and GFRP composites

English Title

Timber beams with external strengthening based on CFRP and GFRP composites

Type

conference paper

Language

en

Original Abstract

The paper is focused on the possibilities of the usage of fibre-reinforced polymers or polymer composites respectively, to strength timber structural members of load-bearing civil engineering structures, in the case of reconstructions, for example. Strengthening timber beams using external reinforcement based on carbon-fibre-reinforced or glass-fibre-reinforced polymer (CFRP or GFRP) composites appears the advanced way. The paper deals with the problems of the application of externally bonded lamellas based on CFRP and GFRP composites for strengthening timber beams to increase their load-carrying capacity and stiffness, in the case of reconstructions of existing building constructions (e.g. historical buildings), for example. During the process of the beam resistance investigation the attention is mainly paid to increasing load-bearing capacity in connection with increasing stiffness of the beams strengthened by lamellas mentioned. In the paper, mainly the information obtained from the experimental research is presented, that means especially outcomes of the experimental verification of the actual behaviour, failure mechanism and load-bearing capacity of the beams strengthened. For this reason, loading tests of two sets of timber beams strengthened by CFRP lamellas have been performed and subsequently test results have been elaborated and statistically evaluated. For the solution of this problem the theoretical analyses using analytical and numerical tools and experimental verification using loading and material tests including advanced methods of the test results evaluation are used. The research has been oriented to several particular problems and in connection with this, to the following arising results: (i) results of the parametric and comparative studies to choose the available beam cross-sections for experimental investigations, (ii) results of the loading and material tests to obtain actual objective resistances and material properties for subsequent numerical analysis, (iii) the efficiency of the application of CFRP and GFRP for strengthening timber beams including their comparison.

English abstract

The paper is focused on the possibilities of the usage of fibre-reinforced polymers or polymer composites respectively, to strength timber structural members of load-bearing civil engineering structures, in the case of reconstructions, for example. Strengthening timber beams using external reinforcement based on carbon-fibre-reinforced or glass-fibre-reinforced polymer (CFRP or GFRP) composites appears the advanced way. The paper deals with the problems of the application of externally bonded lamellas based on CFRP and GFRP composites for strengthening timber beams to increase their load-carrying capacity and stiffness, in the case of reconstructions of existing building constructions (e.g. historical buildings), for example. During the process of the beam resistance investigation the attention is mainly paid to increasing load-bearing capacity in connection with increasing stiffness of the beams strengthened by lamellas mentioned. In the paper, mainly the information obtained from the experimental research is presented, that means especially outcomes of the experimental verification of the actual behaviour, failure mechanism and load-bearing capacity of the beams strengthened. For this reason, loading tests of two sets of timber beams strengthened by CFRP lamellas have been performed and subsequently test results have been elaborated and statistically evaluated. For the solution of this problem the theoretical analyses using analytical and numerical tools and experimental verification using loading and material tests including advanced methods of the test results evaluation are used. The research has been oriented to several particular problems and in connection with this, to the following arising results: (i) results of the parametric and comparative studies to choose the available beam cross-sections for experimental investigations, (ii) results of the loading and material tests to obtain actual objective resistances and material properties for subsequent numerical analysis, (iii) the efficiency of the application of CFRP and GFRP for strengthening timber beams including their comparison.

Keywords

Timber, beam, strengthening, CFRP, GFRP, composite

RIV year

2013

Released

02.09.2013

Publisher

Taylor & Francis Group, London

Location

London

ISBN

978-1-138-00061-2

Book

Research and Applications in Structural Engineering, Mechanics and Computation

Edition

I

Edition number

1

Pages from

2427

Pages to

2432

Pages count

6

Documents

BibTex


@inproceedings{BUT105221,
  author="Marcela {Karmazínová}",
  title="Timber beams with external strengthening based on CFRP and GFRP composites",
  annote="The paper is focused on the possibilities of the usage of fibre-reinforced polymers or polymer composites respectively, to strength timber structural members of load-bearing civil engineering structures, in the case of reconstructions, for example. Strengthening timber beams using external reinforcement based on carbon-fibre-reinforced or glass-fibre-reinforced polymer (CFRP or GFRP) composites appears the advanced way. The paper deals with the problems of the application of externally bonded lamellas based on CFRP and GFRP composites for strengthening timber beams to increase their load-carrying capacity and stiffness, in the case of reconstructions of existing building constructions (e.g. historical buildings), for example. During the process of the beam resistance investigation the attention is mainly paid to increasing load-bearing capacity in connection with increasing stiffness of the beams strengthened by lamellas mentioned. In the paper, mainly the information obtained from the experimental research is presented, that means especially outcomes of the experimental verification of the actual behaviour, failure mechanism and load-bearing capacity of the beams strengthened. For this reason, loading tests of two sets of timber beams strengthened by CFRP lamellas have been performed and subsequently test results have been elaborated and statistically evaluated. For the solution of this problem the theoretical analyses using analytical and numerical tools and experimental verification using loading and material tests including advanced methods of the test results evaluation are used. The research has been oriented to several particular problems and in connection with this, to the following arising results: (i) results of the parametric and comparative studies to choose the available beam cross-sections for experimental investigations, (ii) results of the loading and material tests to obtain actual objective resistances and material properties for subsequent numerical analysis, (iii) the efficiency of the application of CFRP and GFRP for strengthening timber beams including their comparison.",
  address="Taylor & Francis Group, London",
  booktitle="Research and Applications in Structural Engineering, Mechanics and Computation",
  chapter="105221",
  edition="I",
  howpublished="print",
  institution="Taylor & Francis Group, London",
  year="2013",
  month="september",
  pages="2427--2432",
  publisher="Taylor & Francis Group, London",
  type="conference paper"
}