Strengthening of steel girder flanges with concrete-filled ribs

S. H. Kim, J. Shin, O. Han, K. Hwang, K. B. Rho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The flanges of steel girders in the compressive region are strengthened with the longitudinal steel stiffeners in general practices. The new details of concrete-filled longitudinal ribs have been proposed to strengthen the compressive flanges in steel girders in this study and its behaviors have been evaluated through both experimental and numerical studies. The concrete-filled longitudinal ribs may contain the special type perfobond rib shear connectors to increase the composite action between the steel flange and concrete part in the rib. The transverse rebars are installed through the U-type dowel spaces in the perfobond ribs to improve the composite action between the concrete part and longitudinal steel rib also. The both ends of transverse rebar are welded to the insides of steel rib. The transverse rebars are found to play important roles for the composite strengths of the proposed details in the section under the bending moment. When the longitudinal ribs are welded to the compressive steel flanges, the thermal-prestressed tensile stresses may be introduced to the flanges that will experience the compressive stress due to the service actions. The longitudinal ribs may be designed with high-strength steel than the flange steel, because the longitudinal ribs will be subjected to the thermal-prestressed compressive stresses.

Original languageEnglish
Title of host publicationMaintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018
EditorsNigel Powers, Dan M. Frangopol, Riadh Al-Mahaidi, Colin Caprani
PublisherCRC Press/Balkema
Pages390-392
Number of pages3
ISBN (Print)9781138730458
Publication statusPublished - 2018 Jan 1
Event9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018 - Melbourne, Australia
Duration: 2018 Jul 92018 Jul 13

Publication series

NameMaintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018

Conference

Conference9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018
CountryAustralia
CityMelbourne
Period18/7/918/7/13

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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  • Cite this

    Kim, S. H., Shin, J., Han, O., Hwang, K., & Rho, K. B. (2018). Strengthening of steel girder flanges with concrete-filled ribs. In N. Powers, D. M. Frangopol, R. Al-Mahaidi, & C. Caprani (Eds.), Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018 (pp. 390-392). (Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018). CRC Press/Balkema.