Abstract: Prefabricated concrete systems provide complicated structural elements which support speedy construction of engineering facilities, but with difficulties in designing their beam-to-column connections as well as proper account of the semi-rigid stability analysis of structural frames where such connections exist. In this study, a simple beam-to-column U-bar connection is proposed and analyzed along with standard patent joints commonly used for precast framed buildings. A relationship between the joint moment capacity and rotation was developed, on the basis of which the lateral stability analysis of a high-rise prefabricated concrete building frame containing the proposed joint was performed. The model was analytically derived from stress-strain theory and elastic linear analysis. The developed model when incorporated into frame analysis accounts for both non-linear semi-rigid behavior in connections and P-Δ effects of connecting beam and column members. It gives choice to the designer, to change member cross sections and connection parameters interactively with ease, and yields favorable results when compared with other models. Result of lateral stability analysis of the model frame was verified with proven computer software program. Designers therefore have a new form of connector for use in construction of precast concrete buildings.
Title: Investigation of Stability of Sway Precast RC Frames with Semi-Rigid Beam to Column Connections
Author: M.E. Ephraim, T.C. Nwofor
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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