Self-resetting anti-seismic energy dissipation split column

Abstract

The invention provides a self-resetting anti-seismic energy dissipation split column. The self-resetting anti-seismic energy dissipation split column comprises a concrete column and a sliding main plate prefabricated in the interior of the concrete column, wherein the sliding main plate comprises a plurality of vertically and circumferentially arranged sliding plates; the ends, at the center of acircle, of the plurality of sliding plates are fixedly connected with one another; a concrete column is arranged in an area between every two adjacent sliding plates; a friction plate and an auxiliaryplate are arranged between each sliding plate and the corresponding concrete column; each friction plate is positioned between the corresponding auxiliary plate and the corresponding sliding plate; the sliding plates, the friction plates and the auxiliary plates can slide relative to one another; the sliding main plate, the friction plates and the auxiliary plates form an energy dissipation device; one ends of the sliding main plate and the auxiliary plates are connected with a bottom beam or a top beam in a construction area, and the other ends of the sliding main plate and the auxiliary plates are free ends; and the fixed ends of the sliding main plate and the auxiliary plates are respectively positioned at the two ends of the split column. According to the self-resetting anti-seismic energy dissipation split column, the defect that the horizontal deformation capacity of a traditional reinforced concrete column is insufficient under the action of high axial pressure is overcome, thedeformation capacity of a middle column is improved, and the friction among the sliding main plate and the friction plates is beneficial to the energy dissipation capacity of a component.

Description

technical field [0001] The invention relates to the field of anti-seismic technology of cast-in-place subway stations in underground structural engineering, in particular to a self-resetting anti-seismic energy-consuming split column. Background technique [0002] Domestic subway construction has entered a period of rapid development, and more subway projects may be built in high-intensity areas. Although the development of underground projects is booming, underground projects are also facing challenges—the role of earthquakes. The vertical inertial force of the overlying soil in the subway station will have a great impact on the vertical force evaluation of the key supporting members of the underground structure. In fact, it changes the axial compression ratio of the supporting column, thereby changing the shear resistance of the supporting column. strength and deformation properties. For the seismic response of underground structures, it is unfavorable for the shear stren...

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Problems solved by technology

[0005] Aiming at the problem that the existing support columns are damaged due to the increase of shear strength and the decrease of ultimate deformation capacity, which in turn leads to the overall destruction of the underground structural system, the present invention provides a self-resetting anti-seismic energy-consuming split column, which can withstand earthquakes Under the action, it can provide greater vertical compression capacity, energy dissipation capacity and horizontal shear capacity, and also improve the lateral deformation capacity of the split column under the action of axial compression, thereby reducing the earthquake disaster of the underground structure

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