Seismic Performance Study of Self-Centering Steel Reinforced Concrete Building Joints Under High-Intensity Earthquake
DOI:
https://doi.org/10.21152/1750-9548.17.2.191Abstract
The better the seismic performance of building joints, the more lives and property can be preserved in earthquake disasters. This paper briefly introduced the basic structure of self-centering reinforced concrete (RC) column-steel beam joints and then prepared three types of joint specimens. Specimen 1 was a self-centering RC column-steel beam joint, specimen 2 was obtained by removing the damping core plate based on specimen 1, and specimen 3 was obtained by removing both the damping core plate and prestressed reinforcement based on specimen 1. The quasi-static loading tests were carried out on the three types of joint specimens, followed by vibration tests with an eight-degree earthquake on a vibration table. The findings demonstrated that specimen 1 had a higher peak load and ultimate displacement when the quasi-static loading displacement was greater than the yield displacement; specimen 1 had higher energy dissipation capacity when facing periodic loading; when facing an eight-degree earthquake, specimen 1 had the best self-centering ability.
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