Seismic Retrofit of RC Frame with Masonry Infill Walls
A study investigated the possible seismic retrofit options for use in the seismic upgrade of a reinforced concrete frame building with brick masonry infill walls. The buildings of a Mediterranean European country (eg, Greece, Italy, Portugal) and while designed according to the state-of-the-art over 40 years ago, it does not meet the present day seismic design requirements and contains a number of now “well-recognized” seismic design deficiencies and problems such as:
? inadequate beam-column joint details (discontinuous, inadequately anchored bottom beam steel and inadequate shear reinforcement); ? inadequate confinement of columns (stirrups with 90 ° bends and spacing of 12. 5 d b);
? inadequate column splice joint details;
? weak-column strong-beam frame collapse mechanism; and
? brick masonry infill wall interaction with frame response.Â
The overall aim of this project was to identify the optimal combination of retrofit options that would enable the building to meet the present-day “life-safety” performance criteria for buildings subject to a design magnitude earthquake.
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Source:
architectureadmirers
URL:
http://www.architectureadmirers.com/
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