Inelastic Performance of a RC Wall Building That Collapsed in the Chilean's Earthquake and a Building Designed in Mexico City

Abstract eng:
The seismic structural performance of a real case concrete wall building (Building 1) that collapsed during the 27 February 2010 Chile earthquake is evaluated. Similarly, the response of two other concrete frame buildings (Buildings 2 and 3) designed and analyzed according to the current Chilean and Mexican Regulations, respectively, and with a geometric structuring similar to the real case structure is studied. The objectives of this work are: evaluate the seismic performance of the three buildings and compare their elastic and inelastic (nominal and over-strength cases) seismic responses calculated with two accelerograms, CCH-NS (Chile 2010) and SCT-EW (Mexico 1985). Due to the fact that the flexural strength in beams and the flexural-compression strength in columns and walls in the ground floor level were exceeded by the demand induced from the seismic load, plastic hinges were developed at the ends of the structural elements. It was verified that the shear strengths of the selected structural elements were higher than the seismic demands.

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