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Cloud to IDA: A Very Efficient Solution for Performing Incremental Dynamic Analysis

  • A. Miano
  • F. Jalayer
  • A. Prota
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 10)

Abstract

Incremental dynamic analysis (IDA) is a procedure in which a structure is subjected to a suite of ground motion records, scaled to multiple levels of intensity and leading to corresponding curves of response versus intensity. However, implementation of IDA usually involves a significant computational effort. In this work, a simple and efficient solution for IDA analysis with only few points, based on the structural response to un-scaled records (a.k.a the “cloud”), has been implemented. The transverse frame of a shear-critical seven-storey older RC building in Van Nuys, CA, which is modeled in Opensees with fiber-section considering the flexural-shear-axial interactions and the bar slip, is employed. It is demonstrated that the simplified IDA, obtained based on a significantly lower computational effort with respect to the full IDA, provides reliable results in terms of the statistics of structural response (e.g., mean and mean plus/minus one standard deviation) versus intensity and structural fragility.

Keywords

Seismic fragility Existing RC frames Non-linear dynamic analysis procedures 

Notes

Acknowledgements

This work is supported in part by the executive Project ReLUIS-DPC 2014/2016. This support is gratefully acknowledged.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Structures for Engineering and ArchitectureUniversity “Federico II”NaplesItaly

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