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

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5. SEISMIC BEHAVIOUR OF RC COLUMNS EMBEDDING STEEL PROFILES Set of elements Global deformed configuration of the steel profile Table 5.16. Steel web panel mechanism –σ13 stresses Imposed top displacement: ey Imposed top displacement: 6ey Imposed top displacement: 10ey In fact, as depicted in Figure 5.42, by means of the elaboration of the values of the strain gauges positioned in the flange of the steel profile it is possible to evidence that the deformation in the zone of the stiffeners is greater than that along the flange. High plastic deformations, intended as local plastic hinges, are well localised in these points where part of the shear forces are transmitted. 40 38 36 34 32 30 28 26 24 22 20 18 77.5 77 76.5 76 75.5 75 74.5 74 73.5 73 72.5 72 71.5 71 70.5 70 69.5 69 68.5 90 88 86 84 82 80 78 76 74 72 70 233
5. SEISMIC BEHAVIOUR OF RC COLUMNS EMBEDDING STEEL PROFILES Nevertheless, it is of primary importance to point out that this behaviour was encountered also in the specimens without the horizontal steel plates. Therefore, the plastic hinges form at the four joint corners where the shear forces have to be transferred, regardless of the presence of the stiffeners. SG-1 234 SG-7 0.005 0.004 0.003 0.002 0.001 ey / 4 ey / 2 3/4 ey ey 2ey 4ey 6ey elastico SG-4 0.000 0 90 180 -0.001 SG-1 SG-7 SG-4 Figure 5.41. Evolution of the measured strain in the web panel of the steel profile SG-4 SG-5 SG-6 75 60 45 30 15 0 0 -15 -30 -45 -60 -75 -0.0002 -0.0004 -0.0006 -0.0008 -0.001 Figure 5.42. Evolution of the measured strain in the flange of the steel profile -0.0012 ey / 2 3/4 ey ey 2ey 4ey 6ey elastico -0.0014
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Dipartimento di Ingegneria Meccanic
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UNIVERSITÀ DEGLI STUDI DI TRENTO D
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Ai miei genitori
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INDEX 1 INTRODUCTION...............
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INDEX iii 4.10.3 Results of the PsD
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1.1 Introduction 1 1 INTRODUCTION I
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1. INTRODUCTION imposes precise con
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1. INTRODUCTION joints whilst 2D mo
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7 2 DUCTILITY AND SEISMIC RESPONSE
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2. DUCTILITY AND SEISMIC RESPONSE O
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3. SEISMIC BEHAVIOUR OF BOLTED END
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4. SEISMIC RESPONSE OF PARTIAL-STRE
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5. SEISMIC BEHAVIOUR OF RC COLUMNS
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Analysis and modelling of the seismic behaviour of high ... - Ingegneria

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