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

4. SEISMIC RESPONSE OF PARTIAL-STRENGTH COMPOSITE JOINTS
where:
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Ft,j,Rd is the effective design tension resistance of the row of reinforcing
zj
bars or bolts;
is the distance from the component j in tension to the center of the
compression.
The centre of the compression is assumed to be in line with the mid-thickness of
the compression flange of the connected beam (see Figure 4.31b).
(a) (b)
Figure 4.31. Moment resistance Mj,Rd calculation for: a) Sagging bending moment;
b) Hogging bending moment
Rotational Spring
(M, )
kConnL
Translational Spring
(F, )
kweb
Rotational Spring
(M, )
kConnR kConnL Translational Spring
(F, )
(a) (b)
kweb
Rotational Spring
(M, )
kkConnL ConnR
Figure 4.32. Joint configuration for: (a) Exterior joint with HEB 260 Column; (b) Interior
joint with HEB 280 Column
The effective design tension resistance of a bolt-row is taken as the smallest
values of the tension resistances of the basic components (bolts in tension, column
web in tension, column web in bending, end-plate in bending, beam web in