A MATHEMATICAL MODEL FOR GENERATING THE PULSEFREE PART OF THE NEAR-FIELD EARTHQUAKES

based on the recorded data it is understodd that the near field earthquakes are often accompanied by a large energy pulse at the beginning of those records , caused by the so - called forward directivity . Shortcomings of the response spectra approach in describing the considerable demands induced by the dominant velocity pulse of the near field earthquakes in different structures makes it inevitable using time history analyses in such circumstances.

Keywords:

velocity pulse , pulse shape , background earthquake , near fault earthquakes