Evaluation of combination rules for peak response calculation in three‐component seismic analysis
作者： Julio J. Hernández , Oscar A. López
DOI: 10.1002/EQE.290
关键词: Principal component analysis 、 Mathematics 、 Geometry 、 Upper and lower bounds 、 Function (mathematics) 、 Radiant intensity 、 Vertical direction 、 Structural engineering 、 Earthquake engineering 、 Seismic analysis 、 Component (thermodynamics)
摘要: The responses, re, given by several multicomponent combination rules used in seismic codes for determining peak responses to three ground motion components are evaluated elastic systems and compared with the critical response rcr; this is defined as largest all possible incident angles of obtained means CQC3-rule when a principal component vertical, or GCQC3-rule it departs from vertical direction. examined SRSS-, 30%-, 40%- IBC-rules, considering different alternatives design horizontal spectrum. Assuming that along direction, upper lower bounds ratio re/rcr each rule determined function spectral intensity one acting alternately structural axis. Underestimations overestimations identified spectrum. When envelopes calculated, values ratios. It shown inclination respect axis can significantly reduce case vertical. Copyright © 2003 John Wiley & Sons, Ltd.
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