1 / 24

WP 15 – Survey of Highway Structures

This survey aims to update the inventory and assessment of highway structures in selected countries, covering data collection, condition assessment, loading analysis, and structural safety. Tasks include comparing condition assessment methodologies, optimizing repair strategies, and developing dynamic load models. The seminar also discusses specific countries' experiences and guidelines, with a focus on safety assessment and efficiency improvement. Overall, the project's goal is to provide explicit guidance for enhancing existing highway structure assessments through modern techniques and realistic loading models.

havyn
Télécharger la présentation

WP 15 – Survey of Highway Structures

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WP 15 – Survey of Highway Structures Aleš ŽnidaričEugene O’Brien, Joan Casas, Alan O’Connor, Tomasz Wierzbicki SAMARIS seminar Brussels

  2. WP 15 – SurveyObjective To provide an updated inventory and assessment of highway structures in selected EEA and CE countries. SAMARIS seminar Brussels

  3. WP 15 – SurveyTasks 15.1 Data collection 15.2 Condition assessment 15.3 Loading 15.4 Structural safety 15.5 Survey SAMARIS seminar Brussels

  4. WT 15.1 – Data collection SAMARIS seminar Brussels

  5. WT 15.2 – Condition Assessment • focus on procedures used for assessment of structural condition • compare of different CA methodologies • overview of the highway structures condition in selected countries SAMARIS seminar Brussels

  6. WT 15.2 – Condition Assessment • experience from the following countries has been covered in the SAMARIS: Czech Republic Austria Hungary Denmark Norway France Poland Germany Slovenia United Kingdom United States • links to COST 345, PIARC C11 SAMARIS seminar Brussels

  7. WT 15.2 – Condition Assessment Straightforward instructions on how to: • detect possible deterioration processes • indicate condition of structures and their elements • assess condition of the whole structure population • rank structures for urgent repair and maintenance strategies • optimise allocation of budget SAMARIS seminar Brussels

  8. WT 15.2 – Condition AssessmentHandbook of damages • purpose: to facilitate and improve identification of damages on structures: • during the training for bridge inspectors • to clarify ambiguous cases • based on COST 345 application • Internet application: • inspect and add new information • searching tool SAMARIS seminar Brussels

  9. WT 15.2 – Condition Assessment SAMARIS seminar Brussels

  10. WT 15.3 Loading • subtask 15.3.1: Dead Loads • subtask 15.3.2: True traffic loading • subtask 15.3.3: Live load modelling • subtask 15.3.4: Dynamic loading • subtask 15.3.5: Experiments SAMARIS seminar Brussels

  11. WT 15.3 LoadingDead Loads • evaluation of existing procedures • assessment of data • demonstration of dead load evaluation SAMARIS seminar Brussels

  12. WT 15.3 LoadingTrue Traffic Loading 15.3.2 True Traffic Loading WIM Data collected from 20 sites in Slovenia & 6 sites in the Netherlands (thanks to DWW) • Data analysed at UCD to determine characteristics of weight distribution by season/road type (inter-urban, etc.) SAMARIS seminar Brussels

  13. WT 15.3 Loading Dynamic Loading • Simple dynamic models of bridge-truck integration to identify critical combinations of speed and spacing SAMARIS seminar Brussels

  14. WP 15.3 – LoadingDynamic Loading • Full dynamic models of bridge-truck interaction for multiple trucks have also been developed • In process of being calibrated with experimentally recorded WIM data • Currently looking at influence of pavement roughness SAMARIS seminar Brussels

  15. WP 15.3 – LoadingExperimental Programme 2 experiments planned: • different structural forms and levels of deterioration, road profile and therefore dynamic characteristics • different geographic location and traffic characteristics • different durations of recording proposed • different loading scenarios govern extreme SAMARIS seminar Brussels

  16. WP 15 – LoadingExperiment 1 in Poland SAMARIS seminar Brussels

  17. WP 15 – LoadingExperiment 1 in Poland SAMARIS seminar Brussels

  18. WP 15 – LoadingExperiment 2 in Slovenia • to assess influence of pavement unevenness on bridge dynamics • to get statistically evaluated impact factors for 2-week population of vehiclesbeforeand afterrehabilitation • bridge WIM electronics upgraded for dynamicmeasurements SAMARIS seminar Brussels

  19. WP 15 – SurveyExperiments SAMARIS seminar Brussels

  20. WP 15 – LoadingExperiment 2 in Slovenia SAMARIS seminar Brussels

  21. WP 15 – Safety • surveyed work of BRIME (European Research Project), COST345, ISO, JCSS, PIARC (World Road Association) SAMARIS seminar Brussels

  22. WP 15 – Safety • countries having special guidelines for safety assessment of existing highway bridges, have been or will be analysed: • Canada • Czech Republic • Denmark • Norway • Slovenia • Switzerland • United Kingdom • USA SAMARIS seminar Brussels

  23. WP 15 – SafetyProvisional conclusions • in many countries no safety codes exist, benefits in assessment where they do • safety assessment should be based on LSF • 5 levels of analysis form the most efficient assessment process • resistance formulas for undamaged elements can not be the same as for the deteriorated ones • no consensus on how to do loading tests • different target reliability levels for design and assessment may be considered SAMARIS seminar Brussels

  24. Conclusion • work in WP 15 is well under way • expected benefits: explicit guidelines and recommendations how to improve and optimise assessment of existing highway structures using: • more modern assessment techniques • better load modelling • realistic dynamic loading • safety assessment procedures SAMARIS seminar Brussels

More Related