End part local elongation type anti-buckling support-beam-column connecting node

Abstract

The invention discloses an end part local elongation type anti-buckling support-beam-column connecting node and relates to an anti-buckling support-beam-column connecting node which is used for solving the problems in the aspects of anti-seismic performance of support and building structures, stability outside the plane of the node, seismic rehabilitation, construction, installation and the like caused by support-node plate bolted connection and node plate-beam column welded connection. An intermediate node plate of a framework node plate is plugged in an open slot on the end part local elongation type node, an intermediate core plate and a local elongation stiffening rib or a local elongation core plate are welded together with the intermediate node plate, the framework node plate is placed on the upper surface of the top flange of an I-shaped steel beam, vertical end plates of the framework node plate lean against each other and prop against the side flange of an H-shaped steel column, and the framework node plate is fixedly connected with the H-shaped steel column and the I-shaped steel beam respectively through a plurality of first and second high-strength bolts. The end part local elongation type anti-buckling support-beam-column connecting node is used for civil construction structures, especially in multi-storey and high-rise anti-seismic, energy-consuming and shock-absorption building structures.

Description

technical field [0001] The invention relates to an anti-buckling support-beam-column connection node, which belongs to the field of building structures. Background technique [0002] Buckling-resistant braces are currently being used as a new energy-dissipating and shock-absorbing component in civil and architectural structures, especially in multi-story buildings. In general (see Figure 1 ~ Figure 3 ), the core material of the anti-buckling brace can adopt straight and cross-shaped cross-sections, but the end nodes of the braces generally adopt welded cross-shaped cross-sections to increase their bending stiffness. Therefore, in order to connect with the frame gusset plate, the frame gusset plate also needs to be made into a corresponding welded cross section, and eight splicing plates are clamped to each other by high-strength bolts to connect each other, while the gusset plate and the beam column are connected by fillet welds Connection, such traditional connection meth...

AI Technical Summary

Problems solved by technology

[0005] (2) Construction and installation problems caused by the bolt connection method of support-gusset plate

[0007] (3) The problem of local cracking caused by the welding connection of gusset plate-beam column

[0008] Studies have shown that if fillet welds are used to connect the gusset plate and the beam-column, local stress concentration will occur at the corner of the gusset plate edge, and under the action of seismic reciprocating loads, alternating local tensile and compressive stresses will be generated, making this position easy to crack Or it is easy to cause local fracture of the beam end and column end flange connected to this position, which is more likely to cause out-of-plane buckling of the gusset plate, which will have an adverse effect on the seismic performance of the building structure, and will also affect the post-earthquake repair zone of the structure. come difficult

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