Cast steel modular connectors and connecting nodes for beam-to-column connections in steel structures

Abstract

The invention provides a cast steel modularized connecting piece for connection of a steel structure beam and a column and a connecting node. The cast steel modularized connecting piece for the connection of the steel structure beam and the column comprises a vertical piece fixedly connected with the steel column and a transverse piece fixedly connected with the steel beam, the vertical piece and the transverse piece are integrally cast to form a T-type structure arranged transversely, the vertical piece is composed of two end plates, a plate with an arc hole and two rectangular plates, the two end plates, the plate with the arc hole and the two rectangular plates are identical in thickness and are located in a same plane, the plate with the arc hole formed comprises a combining plate fixedly connected with the transverse piece and a plurality of sand clock type assemblies arranged on the two sides of the combining plate, one end of each sand clock type assembly is connected to the side face of the corresponding end plate, and the other end of the corresponding sand clock type assembly is connected to the side face of the combining plate. Due to the fact that the cast steel modularized connecting piece is formed through integral cast by adopting a cast steel technology, impact toughness is high. Due to the fact that the sand clock type assemblies have strong stretchable deformability and stable and efficient energy-dissipating capacity, the cast steel modularized connecting piece has excellent earthquake resistant behaviors. Due to the fact that the vertical piece and the transverse piece are connected with the steel column and the steel beam respectively through high-strength bolts, the cast steel modularized connecting piece is convenient to construct, and easy to replace after earthquakes.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and relates to a beam-column connector and a beam-column connection node. Background technique [0002] Steel structures have the advantages of high strength, light weight, and short construction period, and are widely used in the construction industry. [0003] Steel frame beam-to-column connection is an important technical field of steel structure design. During the Northridge earthquake in the United States in 1994 and the Hanshin earthquake in Japan in 1995, a large number of brittle fractures occurred in traditional beam-column bolted joints, which seriously affected the seismic performance of steel structures. After the earthquake, many countries, mainly the United States and Japan, have conducted a lot of research: on the one hand, they have proposed various forms of improved joints, but these joints basically still dissipate energy through the formation of plastic hinges...

AI Technical Summary

Problems solved by technology

Therefore, under the influence of leverage, the tensile force received by high-strength bolts is greater than the theoretical calculation value, which may cause insufficient bolt bearing capacity and damage

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