PEER 2007 Seismic Design Competition Rules.pdf

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ΔRoof - ΔFloor Roof Roof Acceleration Individual columns may not be base isolated. All columns must be bolted to a continuous floor plate. Base (Shake Table) Base Plate Base Acceleration Figure 3-2: Schematic of a structure with base isolation used for individual columns. Such configurations are not allowed. Technical specifications of the shaker table, data acquisition system and accelerometers can be found at http://peer.berkeley.edu/students/Seismic.html. 3.2 Data Processing Displacements will be computed from recorded each acceleration time series by performing the following steps: 1. Transfer the acceleration records into the frequency domain using a Fourier transform. 2. Digitally high-pass filter the acceleration recordings in the frequency domain using a 3 rd order Butterworth filter with a corner frequency of 0.8 Hz. 3. Double integrate the filtered acceleration records over time to obtain displacements. A portion of the low-frequency range of the raw acceleration signals must be removed using a digital filter prior to double integration because the low frequency content of the signals is small compared with the noise in the signals. Highly unrealistic displacements would be obtained if the raw data were integrated in time without first filtering off some of the low frequency content because of the low-frequency noise. An undesired but unavoidable consequence of the filtering is that the low-frequency portion of the acceleration signals, which contains permanent displacements, must be removed. As a result, the displacements computed by double-integrating the acceleration records are transient displacements; the low-frequency Undergraduate Seismic Design Competition 15
permanent component will not be reflected in the computed displacement time series. Undergraduate Seismic Design Competition 16
Page 1 and 2: 2007 Undergraduate Seismic Design C
Page 3 and 4: 1.0 Introduction This section descr
Page 5 and 6: Minimum individual floor plan area:
Page 7 and 8: Florida A&M University New Jersey I
Page 9 and 10: 2.9.h Floor level diaphragms need n
Page 11 and 12: typical weight attachment. Note tha
Page 13 and 14: 9.75 in o.c. 4.125 in o.c. .875 in
Page 15: 3.0 Instrumentation and Data Proces
Page 19 and 20: 457 mm (18 inch) 4.76 mm (3/16 inch
Page 21 and 22: (a.) Example of insufficient suppor
Page 23 and 24: 5.0 Performance-Based Scoring Metho
Page 25 and 26: Structure Repair Cost / Initial Str
Page 27 and 28: Annual Income Score Increase, Y 10
Page 29 and 30: 7.0 Example Problem It should be no
Page 31 and 32: Engineering Demand Parameter (EDP)
Page 33 and 34: Final Annual Seismic Cost, FASC: FA
Page 35 and 36: 9.0 Registration 9.1 Team Registrat
Page 37 and 38: 11.0 Maps Figure 11-1: Detail Map o
Page 39 and 40: Multi-Disciplinary Center for Earth
Page 41 and 42: Earthquake Engineering Research Ins
Page 43 and 44: NOTES: Undergraduate Seismic Design

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