Strong-column/weak-beam

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Presentation transcript:

Strong-column/weak-beam

MOMENT FRAME BEHAVIOR SEAOC Blue Book 1999

STRONG-COLUMN, WEAK BEAM Blue Book Commentary C402.5

GLOBAL STRONG-COLUMN, WEAK-BEAM Formula is based on the sum of moment strengths for the columns and beams framing into a level. S Mn Columns below  S Mn Beam left and right MB MC

Takitori 100%

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HYBRID Beam-Column connection Mild Steel Fiber reinforced grout pad Unbonded post-tensioned tendons Courtesy of Ms. S. Nakaki

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Dual system Desired mechanism Undesirable mechanism RUTHERFORD & CHEKENE