Cyclic earthquake-type performance of one-bay single-story reinforced concrete (R/C) frames retrofitted with an encased R/C panel

G. C. Manos, V. Soulis, K. Katakalos, G. Koidis, M. Theofanous

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

Abstract

The in-plane behaviour of one-bay single-story reinforced concrete (R/C) frames, retrofitted by jacketing of their columns together with a cast-in-place encased R/C panel, was studied numerically when subjected to cyclic seismic-type horizontal loading. The influence of such an encased R/C panel is examined, when it is connected with the surrounding frame with or without steel ties. From preliminary numerical results is concluded that an encased panel results in a considerable increase of the stiffness and the bearing capacity of such a system, especially when steel ties are present at the interface. The presence of steel ties moderates the amplitude of the forces transferred at the narrow column-to-beam joint regions in a direction normal to the interface through the contact/gap mechanism; thus it, mitigates the possibility of crushing the encased panel and/or parts of the columns or beams at these regions. Thus, an encased R/C panel connected by the appropriate steel ties with the surrounding R/C frame, has a beneficial effect on the seismic behaviour of this type of structural system. Experiments were performed in order to quantify the behaviour of such steel tie connections at the interface under a stress field similar to the one that develops at this part of the encasement during seismic type loading. Such measured behaviour is in agreement with the assumptions made concerning the behavioural characteristics of these steel ties in the preliminary numerical analysis. Next, simple and advanced numerical simulations of the tested connection detail are also examined in an effort to validate numerical tools that can serve the purpose to quantify such a transfer of forces for connection details that can be used in design. It was concluded that the described advanced numerical simulation is a quite valid numerical approach.

Original languageEnglish
Title of host publicationCOMPDYN 2017 - Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
PublisherNational Technical University of Athens
Pages101-119
Number of pages19
Volume1
ISBN (Electronic)9786188284418
Publication statusPublished - 1 Jul 2017
Event6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2017 - Rhodes Island, Greece
Duration: 15 Jun 201717 Jun 2017

Conference

Conference6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2017
Country/TerritoryGreece
CityRhodes Island
Period15/06/1717/06/17

Keywords

  • Encasement R/C Panels
  • Jacketing
  • Reinforced Concrete Frames
  • Retrofitting
  • Soft Ground Floor

ASJC Scopus subject areas

  • Computational Mathematics
  • Computers in Earth Sciences
  • Geotechnical Engineering and Engineering Geology

Fingerprint

Dive into the research topics of 'Cyclic earthquake-type performance of one-bay single-story reinforced concrete (R/C) frames retrofitted with an encased R/C panel'. Together they form a unique fingerprint.

Cite this