Spatial distribution of near-fault ground motion

摘要: Near-fault strong ground motion of strike-slip and dip-slip vertical inclined rectangular fault in half-space layered is analyzed by dislocation source model. The Fourier spectra ratio adopted to study the characteristics near-fault motion. For both slip models, with high amplitude located a narrow belt area along projection on mainly controlled sub-faults nearby. Directivity more dominant long period for components perpendicular fault, parallel fault. deeper location is, slowly attenuates. There obvious hanging wall effect spatial distribution asymmetric which coincides observational data. Finally, fitting function proposed compared near factors 1997 Uniform Building Code USA.