Analysis and modelling of the seismic behaviour of high ... - Ingegneria

3. SEISMIC BEHAVIOUR OF BOLTED END PLATE BEAM-TO-COLUMN STEEL JOINTS
activated in the end plate, the column flange and the column web panel in shear.
With regard to the cyclic response, one can observe that total rotations of CJ reach
values higher than 45 mrad, implying a suitable ductile behaviour for high ductile
(class H) structures in seismic applications (Astaneh-Asl, 1995; Eurocode 8, 2002).
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REACTION MOMENT (kNm)
200
150
100
50
0
-50
-100
-150
-200
JB1-3A
JB1-3M
-75 -50 -25 0 25 50 75 100 125
ROTATION (mrad)
Figure 3.16. Experimental response of JB1-3M and
JB1-3A Complete Joints
Figure 3.17. Fracture of an end plate in a Complete Joint
The percentage of the energy dissipated by the different component of the joint is
reported in Figure 3.18. The most ductile components are:
• the column web panel in shear (component 1 of Figure 3.2;
• the column flange in bending (component 6);