Combined effects of axial load and concrete strength variation on the seismic performance of existing RC buildings

V. Mariani, M. Tanganelli, S. Viti, M. De Stefano

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
20 Downloads (Pure)

Abstract

It is well known that the axial load plays an important role in the evaluation of the structural capacity of RC columns. In existing buildings this problem can be even more significant than in new ones, since the material can easily present poor mechanical properties. The paper is aimed at the investigation of the role of the axial load variation on the seismic performance of RC columns of a case-study, i.e. a doubly symmetric 4-storey RC building. The effects of the axial load variation have been checked on the first storey columns, by comparing the seismic response, measured in terms of chord rotation and shear force, with the corresponding capacity. The sensitivity of the seismic performance to the axial load is evaluated with special attention on the type of analysis adopted to determine the seismic response and on considering a wide range of values for the concrete strength. The study points out a non-negligible effect of the axial load variation on the seismic response of the case-study building, especially when combined to concrete strength variability.

Original languageEnglish
Pages (from-to)805-819
Number of pages15
JournalBulletin of Earthquake Engineering
Volume14
Issue number3
DOIs
Publication statusPublished - 1 Mar 2016

Keywords

  • Axial load sensitivity
  • Concrete mechanical properties
  • Concrete strength
  • RC framed structures

Fingerprint

Dive into the research topics of 'Combined effects of axial load and concrete strength variation on the seismic performance of existing RC buildings'. Together they form a unique fingerprint.

Cite this