Abstract

SALINAS-BASUALDO, Rafael; RODRIGUEZ, Mario E.  and  SANCHEZ, Roque A.. Ensayes en mesa vibradora de edificios miniatura con muros estructurales de concreto convencionales y autocentrados. Ing. sísm [online]. 2013, n.89, pp.101-134. ISSN 0185-092X.

This paper describes results of shaking table tests of three five-story miniature buildings with wall-frame systems, designed with seismic design criteria similar to those used in conventional wall-frame dual systems. One of the specimens had one conventional structural wall and the other two had self-centering structural walls. Self-centering walls were built with unbonded post-tensioned prestressed concrete and energy dissipators of ASTM A615 steel between the base and the wall foundation. Analytical models were developed for structural analysis, which were calibrated to reproduce the experimental results. Predicted response using the analytical models was comparable to measured response. The tests showed that the specimens with self-centering wall-frame dual systems had in general a behavior similar to that observed in the specimen with a conventional wall-frame system. In addition, it was observed that an increase in the participation of the self-centering structural walls in the total seismic response led to an increase in overstrength and to a decrease in residual drifts of the structure as well as in residual deformations in critical sections of the frame elements.

Keywords : reinforced concrete; structural walls; self-centering walls; shaking table test; non-linear dynamic analysis; earthquake-resistant design.

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