Enlarged cross-shaped steel SRC column with multistage composite dampers

Abstract

The invention discloses an enlarged cross-shaped steel SRC column with multistage composite dampers. The enlarged cross-shaped steel SRC column comprises an enlarged cross-shaped steel SRC column bodyand a U-shaped base, the middle of the bottom face of the enlarged cross-shaped steel SRC column body is fixedly connected with the center of the inner bottom surface of the base, and the two sides of the bottom face of the enlarged cross-shaped steel SRC column body are connected with the inner bottom face of the base through two rubber sliding pads; and the two sets of multistage composite dampers are connected with the positions between the column foot side walls, corresponding to the two rubber sliding pads, on the two sides of a column foot and the inner walls on the two sides of the base correspondingly, and the two sets of multistage composite dampers are symmetrically arranged with respect to the line of centers of the upper bottom face and the lower bottom face of the enlarged cross-shaped steel SRC column body. According to the enlarged cross-shaped steel SRC column with the multistage composite dampers, the outer sides of the column bottom face and the base are separated through the rubber sliding pads to form a half swing column, the ground vibration effects are separated from the column to reduce the ground vibration acceleration speed input into the column, damage tothe column is reduced, the dampers with two level energy dissipation devices are arranged at the column foot, and the higher vibration damping efficiency can be achieved.

Description

technical field [0001] The invention belongs to the field of vibration control of civil structures, and relates to an enlarged cross-shaped steel SRC column, in particular to an enlarged cross-shaped steel SRC column with a multi-stage composite damper. Background technique [0002] At present, there are more and more high-rise and ultra-high-rise buildings, and the seismic requirements for structures are also increasing. In terms of structural seismic technology, ordinary reinforced concrete columns have small bearing capacity, low stiffness, and poor seismic performance. After the earthquake, the column feet are easily damaged. Starting from improving the seismic performance of the structure itself, steel reinforced concrete (SRC) structures give full play to the excellent characteristics of steel and concrete, which have high bearing capacity, stiffness, good ductility and energy dissipation capacity under earthquake action. At present, it has become the preferred structu...

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide an enlarged cross-shaped steel SRC column with a multi-stage composite damper, which overcomes the defects that the existing reinforced concrete columns have poor seismic performance and the column foot is easily damaged after the earthquake

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