T-shaped steel plate-type anchoring connection joint for buckling-restrained brace and concrete beam column

Abstract

The invention discloses a T-shaped steel plate-type anchoring connection joint for a buckling-restrained brace and a concrete beam column. The T-shaped steel plate-type anchoring connection joint comprises a joint plate which is anchored to the joint position of a concrete beam and a concrete column. The joint plate is provided with a first part which is anchored into the concrete beam and the concrete column, and a second part which is located outside the concrete beam and the concrete column. A plurality of T-shaped steel sets are symmetrically welded to the front surface and the back surface of the first part. The first T-shaped steel set is provided with three first T-shaped steel bodies, each first T-shaped steel body is provided with a steel wing which is located on the top of the first T-shaped steel body and a steel rib which extends from the middle of the steel wing, and each steel wing and the corresponding steel rib form a T shape together. The three first T-shaped steel bodies constitute an acute triangle, and the steel ribs of the first T-shaped steel bodies point to the interior of the acute triangle. The second T-shaped steel set is provided with three second T-shaped steel bodies which are arrayed into a row in parallel. The second part is provided with threaded holes allowing the buckling-restrained brace to be fixedly connected. By the adoption of the arraying mode of the first T-shaped steel bodies and the second T-shaped steel bodies, the joint plate can transfer force to the concrete beam column evenly, and the stress stability of the joint plate is guaranteed.

Description

technical field [0001] The invention relates to building structural parts, in particular to a buckling-constrained support and a concrete beam-column T-shaped steel plate anchor connection node. Background technique [0002] Concrete frame structures with buckling-restrained braces are being popularized and applied in the field of construction due to their superior properties such as seismic performance, simple construction, and saving raw materials. Among them, the connection node between the buckling restraint support and the concrete frame is a very important link in the whole structure. It needs to have sufficient strength, appropriate stiffness, and sufficient rotation capacity to transmit shear force and bending moment reasonably, and at the same time, it must be easy It is easy to make and construct, and good joints should conform to the design principle of "strong joints, weak components". [0003] In order to meet the above requirements, technicians have done resea...

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Problems solved by technology

[0004] The above-mentioned structure using H-shaped steel anchored in concrete beams and columns can enhance the strength of beams and columns to a certain extent, and can restrain the plastic deformation of beams and columns to a certain extent, but the contact area of ​​H-shaped steels in concrete is large, which will make concrete beams and columns The joints are divided into more areas according to the number of H-shaped steels, which leads to the reduction of the concrete cooperating ability of the concrete beam-column joints, and the concrete at the contact point with the H-shaped steels has obvious stress concentration, and the H-shaped steels occupy a large area in the concrete beam-column , it is likely to affect the layout of the stirrups and longitudinal bars in the original concrete beams and columns, and then affect the concrete pouring and steel bar construction

Moreover, there are fewer types of H-shaped steel, so it cannot be used for some structures. It can only adopt the lattice structure, that is, it is welded by three steel plates. There are many processing procedures and complicated operations.

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