Introduction to Dynamics of Structures and Earthquake Engineering by Gian Paolo Cimellaro & Sebastiano Marasco

Author:Gian Paolo Cimellaro & Sebastiano Marasco
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

12.6.1 Ground Motion Selection and Modification

It is important to mention that the general characteristics of the earthquake ground motion set depends on the specific goals of the analyses to be performed. In fact the Performance Assessment of Buildings (Applied_Technology_Council 2011) define three selection methodologies depending on the performance assessment of buildings: Intensity-based assessment;

Scenario-based assessment;

Time-based assessment.

These methodologies include the development of a target response spectrum, the selection of an appropriate suite of earthquake ground motions and the scaling procedure for consistency with the target spectrum. The scaling procedure is necessary for modifying the record and match the target spectrum for the period of interest.

The first step in the ground motion selection procedure is defining the target spectrum according to the type of assessment (Table 12.15). Table 12.15Target spectrum used in the performance analyses (ATC-58-1, 2012)

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