Damage Model for Buildings Subjected to Earthquakes

by Y. J. Park, Univ of Illinois at, Urbana-Champaign, Urbana, IL, USA,
Y. K. Wen, Univ of Illinois at, Urbana-Champaign, Urbana, IL, USA,
A. H. -S. Ang, Univ of Illinois at, Urbana-Champaign, Urbana, IL, USA,



Document Type: Proceeding Paper

Part of: Structural Safety Studies

Abstract:

A model based on random vibration method is developed for assessing building damage to earthquakes. The damage of reinforced concrete structures is expressed as a linear combination of the sustained maximum deformation and the hysteretic energy dissipated by the structure. An equivalent linearization method is used to obtain the response statistics required for damage assessment. A method of modeling structural frames is also developed for MDF reinforced concrete buildings. The seismic resistances of various types of reinforced concrete buildings are examined in terms of the damage index proposed herein. The damage index is calibrated with actual building damage data collected from past earthquakes, from which a practical limit of tolerable structural damage in terms of this index is also established.

Subject Headings: Reinforced concrete | Concrete structures | Damage (structural) | Damage (material) | Vibration | Earthquakes | Dynamic structural analysis

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