INFLUENCE OF PLASTIC TENSION CHORD DEFORMATION ON THE SHEAR CAPACITY OF PRESTRESSED BEAM ELEMENTS

Sebastian Thoma, Oliver Fischer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The shear strength of prestressed beam elements is of great interest with regard to the evaluation of existing concrete bridges. Accompanying extensive experimental test series, the adaptation and modification of existing models for the evaluation of the load-bearing capacity also represents an important step. Against this background, considerations are made for the isolation of critical influencing factors on the effective concrete compressive strength and quantified on the basis of a numerical framework. Subsequently, a sensitivity analysis is performed on this basis to determine the influence of individual parameters and their interaction. Taking into account the non-linear relationships at the cross-section level and in the cracked compressive stress field in the web, the shear reinforcement ratio and the strain in the longitudinal reinforcement are of major importance.

Original languageEnglish
Title of host publicationInternational Probabilistic Workshop 2022, IPW 2022
EditorsMiroslav Sykora, Roman Lenner, Nico de Koker
PublisherCzech Technical University in Prague
Pages244-252
Number of pages9
ISBN (Electronic)9788001070352
DOIs
StatePublished - 18 Aug 2022
Event19th International Probabilistic Workshop, IPW 2022 - Stellenbosch, South Africa
Duration: 8 Sep 20229 Sep 2022

Publication series

NameActa Polytechnica CTU Proceedings
Volume36
ISSN (Electronic)2336-5382

Conference

Conference19th International Probabilistic Workshop, IPW 2022
Country/TerritorySouth Africa
CityStellenbosch
Period8/09/229/09/22

Keywords

  • Plastic tension chord
  • prestressed concrete
  • sensitivity analysis
  • shear strength
  • stress fields

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