Single-sided hinged self-resetting structure for inhibiting beam elongation effect and construction method thereof

Abstract

This invention discloses a self-resetting structure with a single-sided hinge to suppress beam elongation effect and its construction method, including a precast column, a precast beam, a prestressed pressing system, and a reset component. The precast beam is a T-beam with a vertical slit between the web of the T-beam and the precast column. The prestressed steel strands pass through the precast column and the precast beam, and are tensioned within the flange region of the T-beam, pressing the precast beam and the precast column together so that when the precast beam is subjected to bending, the relative rotation position of the joint is always located at the upper part of the joint. The reset component includes a core reset assembly, the yield strength of which is less than the compressive stress provided by the prestressed steel strands at the beam-column interface. One end of the core reset assembly is connected to the precast column, and the other end is connected to the precast beam. The structure of this invention can achieve good self-resetting function and energy dissipation capacity, effectively suppress beam elongation effect, has a clear force transmission path, and is convenient to construct. After an earthquake, only the energy dissipation component needs to be replaced to achieve rapid structural repair.

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