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This paper proposes and verifies a strengthening method for seismically substandard beam-column joints where contains no transverse reinforcement. Three exterior beam-column joint specimens were tested: one un-strengthened control specimen, another strengthened by installing wing walls to both columns, and the other only to the lower-story column. Failure modes of the strengthened specimens were shifted from joint failure to beam yielding except for one condition where the wing wall was effective only to pull the beam. Design concept is presented to prevent joint failure by the proposed strengthening method.

EVALUATION METHOD OF SEISMIC RESPONSE BY USING MDOF MODEL AND CONTINUUM SHELL ANALOGY FOR SINGLE LAYER LATTICED CYLINDRICAL SHELL STRUCTURES