Preliminary Dynamic Analyses of the Ministry of Agriculture Building

by William C. Stone, NBS, USA,
Ing. Neftali Rodriquez Cuevas, NBS, USA,



Document Type: Proceeding Paper

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

Abstract:

The Ministry of Agriculture building on Avenida San Antonio Abad was originally constructed as a 17 story reinforced concrete structure using a waffle slab system with interior reinforced concrete shear walls surrounding the elevator shafts and stairwells. The plan form was assymetrical and included an attached laterally braced annex which protruded from the south-west side of the building. During the 1985 earthquake it suffered significant damage but did not collapse. Rehabilitation plans for the structure and the results of free vibration tests conducted in the post-earthquake configuration are discussed. A structural model of the building was prepared as part of a preliminary study of its dynamic behavior during the 1985 earthquake. The model was developed using three dimensional finite elements as part of a benchmark study to determine the feasibility of this analytical approach. Observations on the computational requirements and difficulty of analyzing such detailed computer models are discussed.

Subject Headings: Reinforced concrete | Structure reinforcement | Earthquakes | Dynamic structural analysis | Shear walls | Concrete structures | Structural systems

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