Target displacement of high-rise buildings subjected to earthquake ground motions using MPA-CSM procedure considered soil-structure interaction

Abstract

One of critical steps of nonlinear static pushover analysis procedures is to predict the target displacement of monitoring point, which is usually the roof when buildings are analyzed. This research aims to assess the bias and accuracy of the target displacements predicted by the Modal Pushover Analysis combined with the Capacity Spectrum Method (MPA - CSM) procedure when it is applied to 3, 9, 18- storey steel frames due to two sets of strong ground motions having 2% and 10% probability of being exceeded in 50 years. The influence of soilstructure interaction (SSI) was taken into account in this study. The results of the MPA - CSM method were compared with the results from Standard Pushover Analysis (SPA), Modal Pushover Analysis (MPA), MPA - CSM (mode 1) procedure and “exact” results from Nonlinear Response History Analysis (NL-RHA).

Key words: Nonlinear static Procedure; target Displacement; standard pushover analysic; MPA - CSM; Soil-Structure Interaction.