Substructural Pseudo Dynamic Tests of a 2-story Buckling Restrained Braced Frame
Subjected to Bi-directional Earthquake Loads

Tests Schedule Photo Galllery Webcasts References PISA3D Home

The earthquake scenario for Phase I of a 2-story BRBF for
full-scale 3D sub-structural pseudo-dynamic testing

Date
(2005)		 Test No. Starting
Time		 Excitation Hazard Level
Longitudinal Transverse
2005-5-7 SPDT No.1 10:00am (Local)
2:00am (UTC)
 CHY024NS
PGA=0.10g		 CHY024EW
PGA=0.18g		 50% in 50 years
(50/50 event)
2005-5-9 SPDT No.2 10:30am (Local)
2:30am (UTC)		 TCU076EW
PGA=0.37g
 TCU076NS
PGA=0.46g
 10% in 50 years
(10/50 event)
2005-5-9 SPDT No.3 18:00am (Local)
10:00am (UTC)		 CHY024NS
PGA=0.39g
 CHY024EW
PGA=0.67g
 2% in 50 years
(2/50 event)

The earthquake scenario for Phase II of a
2-story BRBF for full-scale 3D sub-structural pseudo-dynamic testing

Date
(2005)		 Test No. Starting
Time		 Excitation Hazard Level
Transverse Direction only
2005-6-10 PDT ASY2
 9:30am (Local)
1:30am (UTC)
 LP89g04EW
PGA=0.87g
 2% in 50 years
(2/50 event)

P.S.:

  1. Before applying any pseudo-dynamic load, free vibration test of entire prototype frame will be conducted to evaluate the fundamental period and damping ratio
  2. Before conducting the pseudo-dynamic tests in Phase II, the story stiffness of BRBF will be checked and the residual displacements resulted from its previous tests will be removed as much as one can by pushing or pulling the BRBF specimen back to its original position.
  3. If the specimen sustain the pseudo dynamic load effects, cyclic uniformly increasing story drifts will be imposed simultaneously in both two directions.