Self-reset shear energy-consuming replaceable connection beam

Abstract

The invention relates to a self-reset shear energy-consuming replaceable connection beam. The self-reset shear energy-consuming replaceable connection beam comprises a non-energy consuming section steel connection beam semi-embedded in a shear wall limb and a replaceable section energy-consuming connection beam, and the two ends of a non-replaceable section are fixedly connected with a replaceablesection in a bolt mode. The replaceable section comprises two self-reset shear energy-consuming dampers which are connected with outer layer I-shaped steel through transmission rods. With the relative motion of two wall limbs of a coupling shear wall, the replaceable connection beam end is deformed, the axial relative motion of the internal self-reset shear energy-consuming dampers is caused by the transmission rods, the shear deformation of internal annular shear lead blocks and the axial deformation of external assembled cylindrical spiral spring bellows of the dampers consume energy, and part of original vibration characteristics of the dampers are restored by shape memory alloy after an earthquake. Compared with the prior art, the self-reset shear energy-consuming replaceable connection beam has the advantages of self-reset, high energy consumption intensity, adaptability to different vibration strength, controllable failure position, replaceable and the like, and can be used forrestoring a functional shear wall structure system.

Description

technical field [0001] The invention relates to the fields of anti-seismic and disaster prevention and mitigation of civil engineering structures, in particular to a self-resetting shear energy-consuming replaceable connecting beam. Background technique [0002] The earthquake has caused huge disasters and losses to our country. After the structure suffered a rare earthquake, some components were seriously damaged, and the replaceable components can replace the severely damaged components in the earthquake to save most of the cost. Coupling beams, as the first line of defense of the combined shear wall seismic system, are often damaged first in the event of large earthquakes, so the importance of research on replaceable coupling beams for combined shear wall structures is self-evident. In addition to the sufficient strength and stiffness of the coupling beam in the combined shear wall to provide sufficient restraint for the wall pier, its other main function is to dissipate ...

AI Technical Summary

Problems solved by technology

Most of the replaceable coupling beams that have been developed so far only start to consume energy under moderate and large earthquakes, which cannot meet the comfort requirements of high-rise building structures during small earthquakes and wind vibrations

Metal yield energy dissipation or lead core rubber energy dissipation are widely used in replaceable sections, but the above mechanisms are easily affected by environmental factors such as temperature

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