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Behavior of Interior and Exterior Flat Plate Connections Subjected to Inelastic Load Reversals.
Zee, H. L.; Moehle, J. P.
National Science Foundation, Washington, DC., August 1984, 146 p.
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A typical interior and exterior plate column connection occurring in a prototype reinforced concrete flat plate structure were modeled with three-tenths scale test specimens. The test specimens were subjected to both gravity loads and statically imposed lateral loads with reversals. Design was in accordance with gravity load requirements of the ACI Building Code (3) and the seismic lateral forces associated with Zone 2 of the 1982 Uniform Building Code (8). Reinforcement details satisfied the provisions of the 1983 ACI Code (ACI 318-83) (3) including special requirements for structures in regions of moderate seismic risk. Deflection and deformation responses of the test specimens to the gravity and lateral loadings were monitored and recorded throughout the experiments. Existing analytical models for strengths and lateral load stiffnesses of plate column connections were studied by comparing model results with observed behavior. Stiffness models included equivalent beam width and equivalent frame models. Plate column connection strengths were calculated by the procedure suggested in ACI 318-83 and by beam analogies. Conclusions are drawn in the last chapter regarding the deformation responses of the specimens and the effectiveness of the analytical models.
Flat plate models; Buildings; Elastic properties; Earthquake engineering; Reinforced concrete; Deflection; Columns (Supports); Deformation; Structural analysis