2009 ODOT Geo/Hydro/HazMat Conference Selection and Scaling of Time Histories: Design Response Spectra from Ground Response Analysis Sites with multip
{"Image DocumentName": "Design Response Spectra from Ground Response Analysis", "Image ImageDescription": "Selection and Scaling of Time Histories: Sites with multiple primary sources. Difficult to match time histories from every source to the entire target spectrum (gives unrealistic results) Use a collection of time histories that include at least three (3) ground motion records representative each primary source (typically subduction zone events and shallow crustal earthquakes) Scale the records associated with each primary source so that the average of the records closely matches the target spectrum in the period range of significance. Develop the mean spectrum for each primary source. Design response spectrum is developed as an envelope with minor reductions in the spectral peaks (mean + one standard deviation).", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}