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    Non-Invasive retrofit of existing RC frames designed for gravity loads only

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    Author
    Pampanin, S.
    Christopoulos, C.
    Date
    2003
    Permanent Link
    http://hdl.handle.net/10092/218

    Recent experimental and analytical investigations on the seismic performance of existing reinforced concrete frame buildings, designed for gravity loads only, as typically found in Italy before the introduction of seismic-oriented design codes in the 1970s, confirmed the expected inherent weaknesses of these systems [1,2]. Because of the poor detailing of reinforcement, the absence of capacity design philosophy and the use of plain round reinforcing bars, peculiar brittle failure mechanisms were observed. At the local level, most of the damage occurred in the beam-column joint panel zones, through particularly brittle failure mechanisms. At the global level, the formation of undesirable soft-stories, resulting from a combination of column hinging and exterior joint damage, greatly impaired the overall structural performance of these RC frames.

    Subjects
    Existing reinforced concrete structures
     
    Non-seismically designed
     
    Shear hinging
     
    Beam-column joints
     
    Non-invasive
     
    Seismic upgrade
     
    Fields of Research::290000 Engineering and Technology::290800 Civil Engineering::290801 Structural engineering
    Collections
    • Engineering: Conference Contributions [2012]
    Rights
    https://hdl.handle.net/10092/17651

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