Beam end hinged connecting assembly for bearing axial force in high-rise building

Abstract

The invention relates to the field of buildings. The invention discloses a beam end hinged connecting assembly for bearing axial force in a high-rise building. The connecting assembly comprises a vertical steel rib of a lateral force resisting component and an axial force beam, wherein the axial force beam comprises a vertical web plate and a first flange plate, the connecting assembly comprises a cross-shaped steel plate, one end of the cross-shaped steel plate is welded to the vertical steel rib of the lateral force resisting component, an end plate is welded at the other end of the cross-shaped steel plate, the end faces, located on the upper side and the lower side, of the cross-shaped steel plate are provided with removable first connecting plates, first bolt holes are formed in the first connecting plates, a removable second connecting plate is arranged at the end part of the first flange plate of the axial force beam, a second bolt hole is formed in the second connecting plate, the connecting assembly further comprises an auxiliary plate, and at least two third bolt holes are formed in the auxiliary plate. According to the connecting assembly, the rotating capacity of the beam end of the articulated axial force beam can be improved, and meanwhile the sectional area loss of a beam end node is greatly reduced.

Description

technical field [0001] The invention relates to the field of construction, in particular to hinged beam structures. Background technique [0002] In multi-storey or high-rise buildings, when the vertical members of the external frame have corners at the floor, the beams at the floor will bear a large axial force (compression or tension); the axial force needs to be transmitted to the The core tube of the building is on the lateral force-resisting member; therefore, the beam (axial force beam) that transmits the axial force plays a key role in maintaining the bearing capacity of the turning vertical member. At the same time, in order to overcome the problem of poor deformation of the frame and the core tube, one or both ends of the axial force beam will use hinge joints. [0003] Existing axial force beams are mostly composed of webs and flange plates connected to both ends of the webs. When the existing axial force beam is connected with the lateral force-resisting member,...

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Problems solved by technology

[0004] 1. The existing connection method is close to semi-rigid connection, the rotational deformation capacity of the joint is greatly limited, the actual rotational performance is very different from the rotational performance in the design assumption, and the actual force of the component is different from the force result of the theoretical analysis Larger; when the vertical deformation difference at both ends of the axial force beam is large, the existing connection method cannot complete sufficient rotation, which may easily cause the steel plate in the node area to yield or the weld to crack

[0005] 2. For beams with wider flanges and smaller web heights, the beam end adopts the method of connecting the webs to the flanges without connecting the flanges, which will cause a large loss of cross-sectional area, and the net cross-sectional area of ​​the beam is only the gross cross-sectional area Half or even less, the beam end nodes become obvious weak points, which do not meet the basic requirements of strong nodes and weak members in seismic design

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