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

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

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3. SEISMIC BEHAVIOUR OF BOLTED END PLATE BEAM-TO-COLUMN STEEL JOINTS<br />

based on elemental components as defined in <strong>the</strong> Eurocodes. An alternative within<br />

<strong>the</strong> same philosophy was <strong>the</strong>n explored employing macro-components, as <strong>the</strong><br />

coupled Tee stubs, which take into account <strong>the</strong> influence <strong>of</strong> <strong>the</strong> key components in<br />

<strong>the</strong> compression <strong>and</strong> tension zone <strong>of</strong> <strong>the</strong> joint as well as <strong>of</strong> <strong>the</strong>ir interactions. The<br />

schematic model <strong>of</strong> <strong>the</strong> joint is represented in Figure 3.25.<br />

The responses <strong>of</strong> joints JA1-2A <strong>and</strong> JB1-3A were simulated by means <strong>of</strong> this<br />

model <strong>and</strong> compared with <strong>the</strong> connection experimental responses, modified to<br />

achieve consistency. Figure 3.26 shows such a comparison for <strong>the</strong> joint JA1-2A.<br />

The overall agreement all over <strong>the</strong> response is quite good, <strong>and</strong> is confirmed by <strong>the</strong><br />

curves <strong>of</strong> <strong>the</strong> cumulated energy illustrated in Figure 3.27. According to <strong>the</strong>se first<br />

results, <strong>the</strong> macro-component model appears a viable tool for approximating <strong>the</strong><br />

cyclic response <strong>of</strong> end plate joints.<br />

Figure 3.25. Macro-component method<br />

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