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Geomechanics and Engineering
  Volume 3, Number 3, September 2011, pages 189-206

Amplification based on shear wave velocity for seismic zonation: comparison of empirical relations and site response results for shallow engineering bedrock sites
P. Anbazhagan, Parihar Aditya and H.N. Rashmi

    Amplification based on empirical relations is widely used for seismic microzonation of urban centers. Amplifications are used to represent the site effects of a particular soil column. Many empirical correlations are available to estimate the amplification of seismic waves. These correlations are based on the ratio of shear wave velocity of foundation/rock to soil velocity or 30 m equivalent shear wave velocity (Vs30) and are developed considering deep soil data. The aim of this work is to examine the applicability of available amplification relations in the literature for shallow engineering bedrock sites by carrying out site response studies. Shear wave velocity of thirteen sites having shallow engineering bedrock have been selected for the study. In these locations, the depth of engineering bedrock (> 760
Key Words
    amplification; site response; Vs30; earthquake; engineering bedrock.
P. Anbazhagan, Parihar Aditya and H.N. Rashmi: Department of Civil Engineering, Indian Institute of Science, Bangalore, India 5600012

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