Investigation of the Use of the Residual Drift for Post-Earthquake Assessment of Damaged RC Structures

Abstract eng:
Post-earthquake assessment of damaged structures is one of important tasks for civil engineers after a seismic event. For conventional buildings, the residual drift is a permanent deformation that a building structure sustains after strong ground shaking. This residual drift is usually one of measurable information in post-earthquake reconnaissance. It has been studied as one of post-earthquake damage assessment indices. In this paper, an example of field measurement of residual drift was introduced to reflect the difficulty of using residual drift alone to classify damage of a building after earthquake. Two kinds of approaches used to estimate peak drift based on residual drift are reviewed. However, these approaches have not been fully assessed by experimental data. A shaking table test of a full-scale four-story RC structure model was used as a case to assess the proposed peak drift estimation methods. Analysis results indicate that the probabilistic inference method that incorporates uncertainties is recommended to be used in practical engineering cases.

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