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

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5. SEISMIC BEHAVIOUR OF RC COLUMNS EMBEDDING STEEL PROFILES 5.5.3 Global test instrumentation Different types of instruments were used to determine the behaviour of the specimens during the test, among them strain gauges, load cells, displacement transducers, inclinometers, etc. Preliminary analyses of the specimen and loading apparatus, by means of FE method, were conducted to estimate the displacement/strain/force ranges to be used in selecting and calibrating instruments. Hereafter the instrumentation that has been used in monitoring the specimens is presented, according to the test set-up illustrated in Figure 5.21. Load cells • Interior load cell located in the vertical actuator (Maximum capacity: 1000 kN in compression, 650 kN in tension); • Interior load cell located in the horizontal actuator (Maximum capacity: 1000KN in compression, 1000 KN in tension); • LC-1: exterior load cell located as hinge (Maximum capacity: 1000 kN); • LC-2: exterior load cell located as hinge (Maximum capacity: 1000 kN). Displacement transducers • Interior LVDT located in the vertical actuator (Maximum capacity: 500 mm); • Interior LVDT located in the horizontal actuator (Maximum capacity: 500 mm); • DT500-Column: exterior digital transducer Heidenhein-USL500 (Maximum capacity: 500 mm), located at the top of the column; • DT500-Beam: exterior digital transducer Heidenhein-USL500 (Maximum capacity: 500 mm), located at the mid-height of the beam. Digital Transducer 2 Load Cell n° 1 Digital Transducer 1 Figure 5.22. Exterior digital transducer and exterior load cells in the specimen Load Cell n° 2 213
5. SEISMIC BEHAVIOUR OF RC COLUMNS EMBEDDING STEEL PROFILES Additional instrumentation Moreover, exterior instrumentation was used to obtain adequate information on the rotation of the column web panel and on the beam portion in the closeness of the joint. In details the instruments are listed below (see Figure 5.23): Figure 5.23. Exterior instrumentation in the joint 214 INCL3 TR-500-40 TR-500-5D (D) (E) TR-500-3D (C) INCL4 TR-500-2D TR-500-1D (B) (A) INCL2 INCL1 INCL5 Ω TG-S-UP TR-500-60 (F) TG-S-DOWN • Exterior LVDTs (Maximum capacity: 100 mm) located in the portion of the joint as seen in the pictures; • Exterior inclinometers (INCL1-2-3-4 with maximum capacity of ±14 degrees) located in the portion of the joint. One more inclinometer (INCL5) located on the force distributing steel beam at the top of the specimen to record the slope variation during the test; by means of this measurement it is possible to obtain the axial and shear load components (which vary during the test) originated by the actuators and acting on the specimen; • Exterior omega (Ω) displacement transducer (TG-S-UP and TG-S-DOWN) located on the top-bottom face of the concrete beam in proximity to the connections; by means of this measurement it is possible to obtain information about the deformation of the beam section during the test, and then, to reproduce the bending moment acting at the joint. 5.5.4 Local test instrumentation The local instrumentation (see the next Figure 5.24-Figure 5.26) was only applied to the specimens COT6-7 of the Phase 1 and COT9-10 of the Phase 2. It consisted of:
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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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Analysis and modelling of the seismic behaviour of high ... - Ingegneria

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