Pseudodynamic test of seismic isolator prototype with U-shaped dampers
DOI:
https://doi.org/10.21754/tecnia.v35i2.2502Palabras clave:
Pseudodynamic test, On-line control, Experimental technique, Control algorithm, Seismic isolatorResumen
The pseudodynamic testing technique combines numerical step-by-step integration with an experimental displacement-based control system to explore the seismic response of structures. Although this method has undergone significant development and has proven to be reliable and effective, its implementation in structural laboratories across Peru remains limited. To help bridge this gap, the present study applies a conventional pseudodynamic test using the control, loading, and data acquisition systems available at the Laboratory of Structures of the Japan-Peru Center for Earthquake Engineering Research and Disaster Mitigation (CISMID). The aim is to assess the performance of the control algorithm through two tests conducted on a seismic isolator prototype that incorporates U-shaped dampers. The specimen is loaded axially to simulate the tributary area of a two-story structure and is subjected to two levels of seismic input derived from the 1974 Lima earthquake record. A comparative analysis is carried out between experimental and numerical responses. The findings reveal effective displacement control and a reasonable correlation between experimental data and numerical simulations.
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