Comparison and Analysis of Attenuation Relationships of Near-Fault Horizontal Peak Ground Acceleration and Velocity

Abstract eng:
In the recent years, more complicated failure characteristics appeared in the near-fault region of earthquakes and many attenuation relationships of some parameters that characterized these region were brought forward, which intended to provide some references for seismic hazard analysis and structure design. These attenuation relationships are different from each other because different earthquake records were adopted and different effecting factors were considered during the process of regression. So, which one is suitable for the future application becomes a question. In order to solve this problem, some representative attenuation relationships of near-fault horizontal peak ground acceleration (PGA) and velocity (PGV) are selected and the results calculated from them and those recorded ones are compared and analyzed. Then some reasonable attenuation relationships are recommended, which are both close to the real PGA or PGV and the other calculated ones. Also, it is found that these attenuation relationships are useful when the distance surpass their original effective scope to some extend. Finally, some further research should be done is expected.

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