Node connection device of assembly-type steel structure beam pillar

Abstract

A node connection device of an assembly-type steel structure beam pillar belongs to the technical field of structure engineering. An upper pillar and a lower pillar are manufactured through welding of square tube pillars, pillar top flange plates, pillar bottom flange plates, long ribs, short ribs, supporting plates, cover plates, hanging hooks and bending plates at a plant, and beams are welded by H-shaped steel beams at the plant; and the form of pillars is not limited to corner pillars, and can also be applied to lateral pillars and middle pillars. According to the invention, all the welding work is completed at the plant, the hanging hooks and bending plates play a role in insertion and guidance during hoisting of the upper pillars and lower pillars, so the hanging difficulty of the upper and lower pillars is reduced, and accuracy corresponding to bolt holes is increased; and when concrete pouring in the pillars is needed, the hanging hooks and bending plates also play a role in anchoring, so rigid connection of nodes could be enhanced. Due to existence of the cover plate, supporting plate and reinforced rib of the pillar, the supporting plate and the cover plate could have very strong building-in effects toward beam ends, so bolt connection will bear pull force and friction force; the bolt utilization rate is increased; and consumption of bolts is reduced under the same bearing force.

Description

technical field [0001] The invention relates to a beam-column joint connecting device of a steel structure, which belongs to the technical field of structural engineering. Background technique [0002] The prefabricated steel structure system refers to the building produced by manufacturing housing units or components according to uniform and standard building part specifications, and then transporting them to the construction site for assembly in place. It is characterized by light building weight, energy saving and environmental protection, fast construction speed, and high degree of industrialization. It can solve many problems such as the low level of construction industrialization in my country, low labor productivity in house construction, and low quality of traditional house products, and adapt to the development of my country's construction industry. [0003] The beam-column joint is the most important joint in the fabricated steel structure system, which directly af...

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Problems solved by technology

[0003] The beam-column joint is the most important joint in the fabricated steel structure system, which directly affects the construction speed and the degree of assembly of the structure. Therefore, the beam-column joints should be connected with high-strength bolts that are easy to operate as much as possible, and the bolts should be arranged as far as possible. The ground is easy for workers to fasten on site. The beam-column joints used in the existing engineering examples have the following shortcomings: In the traditional beam-column fully welded joints, the upper and lower flanges of the beam and the web and the column are welded on site. Although this connection method is a rigid connection , but the ductility of the joints is poor, brittle failure is prone to occur in earthquakes, and welding is required on site, which greatly affects the construction speed and quality. It is not used in multi-story fabricated steel structures. At the same time, due to the large welding area, it is easy to produce large residual Stress, which affects the mechanical performance of nodes

In the traditional bolted and welded joint connection, the upper and lower flanges of the beam end are welded to the column on site, and the web at the beam end is bolted to the column through a shear plate. This connection method requires on-site welding, which greatly affects the construction speed and quality, and the construction The program is complex and it is not easy to achieve rigid connection

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