Damage Assessment and Seismic Behaviour of Steel Buildings in Mexico City

by Enrique Mart?nez-Romero, UNAM, Mexico City, Mexico,



Document Type: Proceeding Paper

Part of: The Mexico Earthquakes?1985: Factors Involved and Lessons Learned

Abstract:

Preliminary reports on the September 1985 earthquakes indicated 10 steel buildings collapsed and 2 more severely damaged. The total number of buildings found either collapsed or severely affected was 330. Further investigations under way have detected numerous steel framed buildings in the most affected area of Mexico City which survived the earthquake, either with some damage or without it. A progress report of such investigation is provided in this paper, together with a brief description of the type of the structural systems and its observed damage on the affected ones. Some ideas of retrofit of existing steel buildings are given to enhance its seismic behaviour and upgrade to the new 1985 Emergency Regulations, in particular that which uses supplemental damping.

Subject Headings: Steel structures | Earthquakes | Seismic tests | Seismic effects | Developing countries | Structural behavior | Steel frames | Mexico City | Mexico

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