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%
RUTHERFORD & CHEKENE 4/15/2017 Replace “Project Name” with your project’s name, which will appear on all slides. Leave text with colons after it (ie “Team: “) then insert your text where it says “fill in…” or “discuss…” RUTHERFORD & CHEKENE
HYBRID Beam-Column connection Mild Steel Fiber reinforced grout pad Unbonded post-tensioned tendons Courtesy of Ms. S. Nakaki
Hybrid System Mechanism qdes Tension force in mild steel Tension force in prestressing steel Compression force in concrete and mild steel Diagonal strut and bond stress transfer joint shear Courtesy of Ms. S. Nakaki
Weak pier story mechanism maffei seaonc seminar eq damage and retrofit concrete Weak pier story mechanism 4/15/2017 4/15/2017 9
Plastic analysis – SEAOC seismic design examples, Volume 3 maffei seaonc seminar eq damage and retrofit concrete Plastic analysis – SEAOC seismic design examples, Volume 3 4/15/2017 4/15/2017 10
Dual system Desired mechanism Undesirable mechanism RUTHERFORD & CHEKENE