A reinforced concrete frame column resistant to hysteretic damage and collapse

Abstract

The invention discloses a reinforced concrete frame column resistant to hysteretic damage and collapse. The area transmits the axial pressure, and blocks the coupling effect of the hysteretic damage of the frame column and the decrease of the compressive bearing capacity of the frame column, and at the same time has the effect of frictional energy dissipation; the compression module is integrated with the concrete of the frame column to form a composite column. In the present invention, at least the upper and lower ends of the frame column are built with side-slip anti-compression modules, which are integrated with concrete pouring to form a composite column, which can improve the anti-hysteretic damage crushing ability, hysteretic deformation capacity and hysteretic loss of the frame column. ability, and improve the anti-seismic collapse ability of the frame structure.

Description

technical field [0001] The invention relates to the anti-seismic field of structural engineering, in particular to a reinforced concrete frame column resistant to hysteretic damage and collapse. Background technique [0002] In the investigation of earthquake disasters, the hysteresis damage and crushing of reinforced concrete frame columns are often used as a sign to distinguish structural earthquake damage or collapse. The hysteretic damage of reinforced concrete frame beams or columns mainly occurs after the components enter elastic-plastic deformation. figure 1 as shown ( figure 1 , the member referred to by 3' is the floor slab), according to the seismic design principle of strong-column-weak-beam frame, beam 2' may enter elastic-plastic deformation before column 1', but because the axial force of beam 2' is usually small or zero, The hysteretic damage evolution rate of beam 2' is relatively smaller than that of column 1', and beam 2' is rarely crushed in the project....

AI Technical Summary

Problems solved by technology

The hysteretic damage of reinforced concrete frame beams or columns mainly occurs after the components enter elastic-plastic deformation. figure 1 as shown ( figure 1 , the member referred to by 3' is the floor slab), according to the seismic design principle of strong-column-weak-beam frame, beam 2' may enter elastic-plastic deformation before column 1', but because the axial force of beam 2' is usually small or zero, The hysteretic damage evolution rate of beam 2' is relatively smaller than that of column 1', and beam 2' is rarely crushed in the project. After beam 2' is damaged, its axial tensile or compressive resistance does not stop working, and it still maintains the overall structure The axial pressure of column 1' is usually larger, and its hysteretic damage reduces the effective compressive area of ​​column 1', resulting in a decrease in its compressive bearing capacity, which in turn aggravates the evolution of its hysteretic damage. It will eventually lead to pressure feed at the end of the column, and a certain number of crushed columns will inevitably lead to the continuous collapse of the frame structure

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