Defining loading criteria for proof loading of existing reinforced concrete bridges

Rutger Koekkoek, Eva Lantsoght, Yuguang Yang, A. de Boer, Dick Hordijk

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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As the bridge stock in The Netherlands and Europe is ageing, various methods to analyse existing bridges are bemg studied. Proof loading of bridges is an option to study the capacity when crucial information about the structure is lacking. This information could be related to the material (for example, the effect of alkali-silica reaction on the structural capacity) as well as to the structiu-al system (for example, the effect of restraints at the supports or transverse redistribution capacity). When it is decided to proof load a bridge, the question arises which maximum load should be attained diuing the experiment to approve the capacity of tiie bridge, and which criteria, based on the measiurements during the test, would indicate that the proof loading needs to be aborted before reaching the maximum desired load (the so-called stop criteria). To defme the requked loading criteria, a review of the literature has been made, finite element models of existing viaducts have been made, and on tiiese viaducts, proof loading tests have been carried out. These bridges were heavily instrumented, with a goal of leaming as much as possible about the structural behaviour during proof loading. As a result of the analysis and experiments, recommendations are given for proof loading of bridges with respect to the required maximum load and the stop criteria. These recommendations are important, since they form the basis of a guideline for proof loading of existing concrete bridges that is under development in The Netherlands.
Original languageEnglish
Title of host publicationfib symposium 2016, performance-based approaches for concrete structures
Subtitle of host publicationCape Town, South Africa
EditorsH. Beushausen
Number of pages10
Publication statusPublished - 2016
Eventfib Symposium 2016: Performance-based approaches for concrete structures: Materials technology, structural design, analytical modelling, conformity assesment and testing - UCT Graduate School of Business, Cape Town, South Africa
Duration: 21 Nov 201623 Nov 2016


Conferencefib Symposium 2016
Country/TerritorySouth Africa
CityCape Town
Internet address


  • assessment
  • concrete
  • proof loadmg
  • viaduct


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