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

4. SEISMIC RESPONSE OF PARTIAL-STRENGTH COMPOSITE JOINTS
respectively. As shown in Figure 4.3, longitudinal (φ 12) and transversal (φ 8)
reinforcing steel was provided in the concrete portions of the columns and shear
studs are used to ensure composite action between the concrete and the steel
shapes. The spacing of the stirrups and shear studs varies along the column
height. At the base and near the beam-column joints, the stirrups are spaced at 50
mm for both column types. Elsewhere, the spacing is increased to 150 mm. No
concrete is used at both floor levels over the depth of the beams.
3500 3500
HEB 260 HEB 260
Main moment resisting frames
3.5 m 3.5 m
Secondary beams
Figure 4.1. Three-dimensional view of the prototype structure
+7.0
+3.5
IPE 300 IPE 300
IPE 300 IPE 300
Figure 4.2. Elevation of a typical 2D Moment Resisting Frame
HEB 280
HEB 280
Photos on Figure 4.4 and Figure 4.5 show details of the column bases. The base
plate is 40 mm thick and measures 400 mm x 600 mm. It is connected to the
HEB 260 HEB 260
7000
103