CN206815524U - A kind of assembled connecting node - Google Patents

Abstract

The utility model discloses an assembled connection node, which belongs to the field of structural engineering steel structures. In the utility model, the steel beam and the end plate are welded, and there are secondary connections through stainless steel angle steel and stainless steel bolts, and the steel beam and steel column are connected through stainless steel bolts, welded end plates and stainless steel angle steel. This connection method overcomes the phenomenon of cracking at the steel plate joints of traditional joints due to the influence of weld residual stress and heat-affected zone under high temperature; it enhances the ductility and robustness of the steel joint area, so that under the action of fire, the joint end plate even In the event of damage, it also has sufficient ductility to transfer the stress mechanism to form a secondary protection capability; this connection node can also be used in an earthquake-resistant area, using the excellent ductility, deformation capacity and secondary protection mechanism of stainless steel angle steel, under the action of earthquake load or reciprocating load The excess energy is dissipated to ensure the safety and integrity of the structure.

Description

An assembled connection node

technical field

The utility model belongs to the field of structural engineering steel structures, in particular to an assembled connection node.

Background technique

With the construction of a large number of multi-high-rise and super high-rise buildings, the application of steel structures is increasing. In structural design, beam-column joints are often fully welded or flange welded-web bolted, and the strength and stiffness of the joint area are relatively high. However, insufficient consideration is given to the ductility, deformation capacity and safety reserve of the joint area under the action of earthquakes and fires, and there are hidden dangers of building damage and collapse caused by joint fracture damage under the action of a large earthquake, which is inconsistent with the seismic design principle of "do not collapse after a large earthquake". There is no secondary protection capability. How to improve the ductility, deformation capacity, energy dissipation capacity and joint safety reserve of steel structure beam-column joints under the action of earthquake and fire is an urgent problem to be solved in the design and construction of steel structures.

Contents of the invention

In view of this, the purpose of the utility model is to provide an assembled connection node to improve the safety and energy consumption capacity of the steel structure connection.

In order to achieve the above purpose, the utility model provides the following technical solutions: an assembled connection node, including steel beams, steel columns, angle steel, end plates and bolts, the steel beam is an I-shaped steel beam, and the steel The column is an H-shaped steel column, and the angle steel and bolts are made of stainless steel; the end plate is a flush end plate and welded at the end of the steel beam, and the steel beam web, end plate, steel column flange and angle steel Bolt holes for passing bolts are correspondingly provided on the top, and the angle steel is arranged between the two flanges of the steel beam and is connected to the web of the steel beam by bolts on one side, and the end plate is connected to the flange of the steel column by bolts on the other side.

Further, the I-shaped steel beam is welded by steel plates.

Further, the I-shaped steel beam is rolled steel.

Further, the H-shaped steel column is welded by steel plates.

Further, the H-shaped steel column is rolled steel.

Further, the bolts are high-strength stainless steel bolts.

The beneficial effects of the utility model are:

(1) It can effectively guarantee the safety and integrity of the structural system, and increase the ductility, fire resistance and energy dissipation capacity of the steel connection area.

(2) The joint includes two connection types (semi-rigid connection and flexible connection), and has two failure mechanisms at the same time, allowing the end plate of the beam end to fail under extreme load conditions, and the flexible connection provides better deformation capacity and fire resistance.

(3) Prefabricated steel structure connection is adopted, and the components are prefabricated in the factory, with high production quality, which can realize rapid assembly on site and save construction period.

The prefabricated steel structure connection has superior mechanical performance, can be used in steel structure fire-resistant systems and high-rise steel structure buildings in high-intensity earthquake areas, and has broad application prospects.

Description of drawings

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the utility model provides the following drawings for illustration:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of steel girder;

Fig. 3 is the structural representation of steel column;

Fig. 4 is the structural representation of angle steel;

Fig. 5 is a structural schematic diagram of the end plate.

detailed description

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in the figure, the assembled connection node in the utility model includes a steel beam 1, a steel column 2, and also includes an angle steel 3, an end plate 4 and a bolt 5, wherein the steel beam 1 is an I-shaped steel beam, and the steel column 2 It is an H-shaped steel column, the angle steel 3 and the bolt 5 are made of stainless steel; the end plate 4 is a flush end plate and welded on the end of the steel beam 1, and the steel beam web, end plate, steel column flange and Bolt holes 6 for passing through bolts 5 are correspondingly provided on the angle steel. The angle steel 3 is arranged between the two flanges of the steel beam and is connected to the web of the steel beam by bolts 5 on one side, and the end plate 4 is connected to the steel beam by bolts 5 on the other side. The column flanges are joined together.

In the utility model, the steel beam 1 and the end plate 4 are welded, and there are secondary connections through stainless steel angle steel and stainless steel bolts, and the steel beam 1 and steel column 2 are correspondingly connected by stainless steel bolts, welded end plates and stainless steel angle steel connect them. On the one hand, two different steel materials are used for the connection between the I-shaped steel beam 1 and the H-shaped steel column 2, including ordinary steel and refractory stainless steel, so as to enhance the deformation and fire resistance of the steel connection. On the other hand, the connection method of the I-shaped steel beam 1 and the H-shaped steel column 2 adopts a combined steel connection type, including two types of connection types: semi-rigid connection and hinged connection.

This connection method overcomes the phenomenon of cracking at the steel plate connection of the traditional joint due to the residual stress of the weld and the heat-affected zone under high temperature; because the angle steel 3 and the bolt 5 are made of stainless steel, the ductility and robustness of the steel connection area are enhanced. Under the action of fire, even if the joint end plate is damaged, it has sufficient ductility to transfer the stress mechanism to form a secondary protection capability, that is, a plastic hinge is formed at both ends of the steel beam, which greatly improves the collaborative deformation capacity of the I-shaped steel beam. The catenary effect is formed to ensure that the structure will not undergo continuous collapse; that is, it ensures that the connecting nodes continue to work in the form of hinges after the damage occurs in the weld area of the end plate. The steel structure connection node can also be used in anti-seismic areas, using the excellent ductility, deformation capacity and secondary protection mechanism of stainless steel angle steel to dissipate excess energy under seismic load or reciprocating load to ensure the safety and integrity of the structure.

The I-shaped steel beam and the H-shaped steel column in the utility model can be formed by welding steel plates, and also can adopt rolled section steel. It can be installed directly on site, the construction speed is fast and the components are of high quality.

Preferably, the bolts are high-strength stainless steel bolts, which can further improve the performance of the bolts.

In the present embodiment, the I-shaped steel beam and the H-shaped steel column are all welded by steel plates, and the assembly procedure is as follows:

a. Weld the I-shaped steel girder 1 with steel plates in the factory, and open bolt holes 6 on the web of the steel girder;

b. Weld the H-shaped steel column 2 with steel plates in the factory, and open bolt holes on the flange of the steel column. The diameter and position of the bolt holes are consistent with the bolt holes on the end plate of the I-shaped steel beam;

c. Cut a rectangular end plate 4 in the factory, and open bolt holes on the end plate. The position and diameter of the bolt holes are consistent with the bolt holes on the H-shaped steel column; weld the end plate 4 to the opening side of the I-shaped steel beam 1 one end, and align their centers;

d. Make stainless steel angle steel 3 in the factory, and open bolt holes on the angle steel. The position and diameter of the bolt holes are consistent with the position and size of the bolt holes on the flange of the steel column and the web of the steel beam;

e. Use stainless steel bolts 5 to connect the stainless steel angle steel 3, the flush end plate 4 and the flange of the H-shaped steel column, and connect the steel beam web.

In general, this joint overcomes the shortcomings of traditional joints that are prone to damage in the weld joint area under the action of fire and earthquake. By using two different steel materials and two failure mechanism modes, they complement each other and ensure the integrity of the steel structure system. Integrity and integrity, it can be used in steel structure systems in fire-resistant and high-intensity earthquake areas. The use of on-site assembly construction methods also helps to save construction time.

Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (6)

1. An assembled connection node, comprising a steel beam and a steel column, is characterized in that: it also includes an angle steel, an end plate and a bolt, the steel beam is an I-shaped steel beam, and the steel column is an H-shaped steel column, and the The angle steel and bolts are made of stainless steel; the end plate is a flush end plate and welded on the end of the steel beam, and the steel beam web, end plate, steel column flange and angle steel are equipped with corresponding Bolt holes for bolts, the angle steel is arranged between the two flanges of the steel beam and one side is connected to the web of the steel beam by bolts, and the other side is connected to the end plate and the flange of the steel column by bolts. 2. The fabricated connection node according to claim 1, characterized in that: the I-shaped steel beam is welded by steel plates. 3. The fabricated connection node according to claim 1, characterized in that: the I-shaped steel beam is rolled section steel. 4. The fabricated connection node according to claim 1, characterized in that: the H-shaped steel column is welded by steel plates. 5. The fabricated connection node according to claim 1, characterized in that: the H-shaped steel column is rolled steel. 6. The fabricated connection node according to claim 1, wherein the bolts are high-strength stainless steel bolts.