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Seismic Rehabilitation: Why, When and How

by Ignacio Martin, Capacete, Martin & Associates, San Juan, PR,



Document Type: Proceeding Paper

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

Abstract:

Common methods of seismic rehabilitation are: repair of cracks, reconstruction of structural elements, addition of stiffening elements, and addition of dampers. A major consideration is the eccentricity that may be introduced by adding stiffening elements. Strengthening an existing building for seismic loads usually requires a more extensive structural analysis than the design of a new building. A case history is presented. The seismic strength of the buildings of a housing project was upgraded. Several possible methods of rehabilitation were considered using dynamic analysis. Reinforced concrete shear walls were added and connected to each floor by post-tensioned strands. The shear walls were supported on concrete caissons, which were post-tensioned to prevent uplifting of the foundation.

Subject Headings: Rehabilitation | Shear walls | Seismic tests | Seismic loads | Seismic design | Building design | Structural members

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