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

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INDEX
3.3 SEMI-RIGID PARTIAL-STRENGTH EXTENDED END PLATE CONNECTION ................. 44
3.4 THE EXPERIMENTAL PROGRAMME CARRIED OUT AT THE DIMS........................... 46
3.4.1 Material properties...................................................................................... 50
3.4.2 Fracture mechanics-based characterization ............................................... 51
3.4.3 Testing equipment and measuring apparatus.............................................. 53
3.4.4 Testing procedure........................................................................................ 56
3.5 MAIN RESULTS AND PRELIMINARY SEISMIC ASSESSMENT .................................... 58
3.5.1 Isolated Tee stubs ........................................................................................ 58
3.5.2 Coupled Tee Stubs....................................................................................... 61
3.5.3 Complete Joints ........................................................................................... 63
3.6 VALIDATION OF THE COMPONENT METHOD.......................................................... 69
3.7 NUMERICAL ANALYSIS......................................................................................... 75
3.7.1 FE Models of the ITS connections............................................................... 75
3.7.2 FE Models of the CJ specimens................................................................... 81
3.7.3 Parametric analyses .................................................................................... 85
3.8 CONCLUSIONS ...................................................................................................... 94
3.9 REFERENCES ........................................................................................................ 96
4 SEISMIC RESPONSE OF PARTIAL-STRENGTH COMPOSITE JOINTS ...............100
4.1 INTRODUCTION................................................................................................... 100
4.2 THE ECOLEADER-ECSC JOINT PROJECT............................................................. 101
4.3 DESCRIPTION OF THE PROTOTYPE STRUCTURE ................................................... 102
4.4 SEISMIC DESIGN OF THE PROTOTYPE STRUCTURE ............................................... 107
4.5 SEISMIC DESIGN OF THE COMPOSITE JOINT ......................................................... 110
4.5.1 Concrete slab resistance............................................................................ 111
4.5.2 Column web panel shear resistance .......................................................... 115
4.5.3 Joint rotational capacity evaluation.......................................................... 120
4.6 MECHANICAL PROPERTIES OF MATERIALS.......................................................... 122
4.7 SEISMIC PERFORMANCE EVALUATION FOR THE PROTOTYPE STRUCTURE............ 122
4.8 CYCLIC TESTS OF FULL-SCALE COMPOSITE JOINT SUBASSEMBLAGES ................. 127
4.8.1 Test set-up and procedure ......................................................................... 127
4.8.2 Specimen behaviour and test results ......................................................... 130
4.8.3 Validation of the analytical model............................................................. 136
4.8.4 3D finite element (FE) model .................................................................... 142
4.9 NUMERICAL ANALYSES OF THE PROTOTYPE STRUCTURE.................................... 150
4.9.1 Pushover vs. incremental dynamic analysis results................................... 151
4.10 PSEUDO-DYNAMIC TESTS ON THE PROTOTYPE STRUCTURE................................ 160
4.10.1 Testing apparatus and instrumentation..................................................... 161
4.10.2 Results of the PsD test n° 1........................................................................ 163