Cortés Delgado, María D.

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Development of the UPRM earthquake simulator facility for dynamic model analysis
(2005) Cortés Delgado, María D.; Wendichansky Bard, Daniel A.; College of Engineering; Suárez, Luis; López, Ricardo; Department of Civil Engineering; Portela Gauthier, Genock
The University of Puerto Rico at Mayagüez has recently added an earthquake simulator to its facilities in the Structural Laboratory. The small-uni-directional-electro-hydraulic shaking table has been designed to investigate the behavior of small-scaled model structures under dynamic loading. The shaking table consists of a rigid platform sliding over a near frictionless linear bearing system and driven by an actuator attached to a reaction mass connected to the floor. A 1:4 model scale building has also been constructed for testing its behavior under dynamic loading. The components of the shaking table system were designed and sized for 1:4 model structures and to reproduce five historical earthquakes. The dynamic characteristics of the reaction frame, simulator platform and oil column were examined along with the possible interaction effects with a test structure. An initial determination of the quality of shake table reproduction has been obtained by carrying out preliminary experimental tests and analyzing the data. These tests were periodic in motion, although the table is also capable of applying random motion.