CN211257341U - Rigid reinforced connection joint of circular steel tube concrete column and I-shaped steel beam - Google Patents

Abstract

The utility model discloses a rigid strengthening connection node of a circular steel tube concrete column and an I-shaped steel beam, which comprises a circular steel tube concrete column, a node member and an I-shaped steel beam. The inner diameter of the semicircular wall steel pipe of the node member is only slightly larger than the outer diameter of the round steel pipe, and the transverse stiffening plate and the vertical stiffening plate are welded on the outside of the two semicircular wall steel pipes to form a cross section for connecting the I-shaped steel beam. The two semi-circular wall steel pipes are connected and fixed at the designated position of the circular steel pipe concrete column by high-strength bolts, and then connected to the I-shaped steel beam, and the necessary parts are welded and strengthened. The connecting node of the utility model has the advantages of simple structure, convenient installation, shortened construction period, good mechanical properties of the node, and is a combined structure node form with broad application prospects.

Description

A rigid reinforced connection node between a circular steel tubular concrete column and an I-shaped steel beam

technical field

The invention relates to construction engineering, in particular to a rigid strengthening connection node of a circular steel tube concrete column and an I-shaped steel beam.

Background technique

In recent years, policies on the industrialization of steel structure buildings and prefabricated buildings have been successively introduced, and it is proposed to actively promote green buildings and building materials, and vigorously develop steel structures and prefabricated buildings. Prefabricated steel structure system refers to a building produced by making housing units or components according to unified and standard building parts specifications, and then transporting them to the construction site for assembly and placement. It can solve many problems such as the low level of construction industrialization in my country, the low labor productivity of housing construction and the low quality of traditional housing products, and adapt to the development of my country's construction industry.

The beam-column joint is a basic part of the frame structure, which has a significant impact on the stress and safety of the entire structure. Once the connection is damaged, the structural member cannot function. Whether its structure is reasonable or not is directly related to the safety and reliability of the structure. The construction method of beam-column joint directly affects the construction speed of the project and the degree of assembly of the structure. Compared with rectangular steel pipes, round steel pipes have better constraining effect on the core concrete, but round steel pipe concrete columns always have the disadvantage of inconvenient connection of nodes, especially in the connection with I-shaped steel beams. Therefore, in order to solve the problem of CFST column beam-column joints, it is necessary to start from the form of joint connection.

Utility model content

Technical problem to be solved: Aiming at the deficiencies of the prior art, in order to overcome the inconvenient connection between the CFST column and the I-shaped steel beam, a rigid reinforced connection node between the CFST column and the I-shaped steel beam is provided.

In order to realize the purpose of the utility model, the technical scheme to be adopted: a rigid strengthening connection node of a circular steel tube concrete column and an I-shaped steel beam, including a circular steel tube concrete special-shaped column, a node member and an I-shaped steel beam, the circular steel tube concrete column. It is composed of round steel pipes and core concrete, which are connected with node members and I-shaped steel beams in turn. Among them, according to different requirements, the short steel beams of the node members can be welded on the node members according to inline, L-shaped, T-shaped or cross-shaped.

In the present utility model, at the position where the outer wall of the round steel pipe connects the node member, the part is ground in advance, the node member is clamped at this position, and the connection direction of the I-shaped steel beam is precisely aligned, and the first high-strength bolt is installed. Insert the first bolt hole and tighten the bolt to fix it. After tightening, the upper and lower ends of the semi-circular wall steel pipe are welded to the round steel pipe column by circular fillet welds, and then the web of the I-shaped steel beam and the web of the short steel beam of the node member are fixed together by the second high-strength bolts. The flange part is welded.

In the preferred solution of the present invention, the inner diameter of the semi-circular-walled steel pipe is only slightly larger than the outer diameter of the round steel pipe. Not strong.

In the preferred solution of the present utility model, the I-shaped section formed by the transverse stiffening plate and the vertical stiffening plate of the node member should match the cross-section of the short steel beam and the I-shaped steel beam, which can be matched with the I-shaped steel beam used in the actual situation. model changes.

The rigid reinforced connection node of the circular steel tubular concrete column and the I-shaped steel beam proposed by the utility model has the following advantages:

The construction is convenient, because the round steel pipes, node components, I-shaped steel beams, high-strength bolts, etc. in the node area can be prefabricated and welded together in the factory. Can.

In the node area, the transverse stiffening plates are welded on the node members to transmit the bending moment of the steel beam, and the vertical stiffening plates are welded to transmit the shear force of the steel beam, and the force is reasonable. In addition, since there are no steel bars in the node area, the work is only carried out outside the steel pipe, so there is no crowding of steel bars in the node area.

Description of drawings

Figure 1 is a schematic diagram of the rigid reinforcement connection node between the circular steel tubular concrete column and the I-shaped steel beam;

Figure 2 is a schematic diagram of the splitting of the rigid reinforcement connection node between the circular steel tubular concrete column and the I-shaped steel beam;

Figure 3 is a schematic diagram of the node member 3;

FIG. 4 a is a front view of the node member 3 ; FIG. 4 b is a left side view of the node member 3 ; FIG. 4 c is a top view of the node member 3 .

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the drawings and embodiments of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-3 and 4a-4c. In this embodiment, a rigid reinforced connection node between a CFST column and an I-shaped steel beam is provided. The CFST column is composed of a circular steel tube and core concrete, and the nodes are connected in turn For components and I-shaped steel beams, according to different application requirements, the short steel beams of the node members can be welded on the node members in a straight-line, L-shaped, T-shaped or cross-shaped.

The node member 3 can be processed in advance in the factory. The node structure 3 is composed of a semi-circular wall pipe groove 4, a transverse stiffening plate 6 and a vertical stiffening plate 7 welded together. The upper and lower ends of the vertical stiffening plate 7 are at a certain angle. The width of the transverse stiffening plate 6 is set to the same width as the flange of the I-shaped steel beam 8, and the length of the web is consistent with the length of the middle web portion of the vertical stiffening plate 7, so an I-shaped cross-section matching the I-shaped steel beam 8 is formed. . Second bolt holes 13 matching the I-shaped steel beam 8 and the connecting plate 9 are pre-opened on the web of the short steel beam 5 , which can be fixed by the second high-strength bolts 11 during installation.

Before installation, at the position where the outer wall of the round steel pipe connects the node member, grind the part in advance, hoist the node member to this position, and accurately align with the installation and connection direction of the I-shaped steel beam. The first high-strength bolts 10 are inserted into the first bolt holes 12, and the bolts are tightened for fixing. After tightening, the upper and lower ends of the semi-circular wall steel pipe are welded to the round steel pipe column by circular fillet welds.

After the installation of the node member 3 and the CFST column is completed, lift the I-shaped steel beam 8 to the same height as the node member 3, align it closely with the short steel beam 5 of the node member 3, and pass high-strength bolts at the web. The through connection is made through the connecting plate 9, so that the I-shaped steel beam 8 and the web area of the short steel beam 5 of the node member 3 are bolted, and then the flange connection part is welded to strengthen and fix, and the welding adopts a single-sided slope. mouth weld.

Claims (4)

1. The utility model provides a rigid reinforcement connected node of circular steel tube concrete column and I-shaped girder steel which characterized in that: the concrete-filled steel tube node comprises a circular steel tube concrete special-shaped column, a node component (3) and an I-shaped steel beam (8), wherein the circular steel tube concrete special-shaped column comprises a circular steel tube (1) and core concrete (2), and the node component (3) comprises a semicircular wall steel tube (4), a short steel beam (5), a transverse stiffening plate (6) and a vertical stiffening plate (7).

2. The rigid reinforced connection joint of the circular steel tube concrete column and the I-shaped steel beam as claimed in claim 1, which is characterized in that: the internal diameter of semicircle wall steel pipe (4) only slightly is greater than the external diameter of circular steel pipe (1) to can closely laminate circular steel pipe (1) outer wall during the installation, pass first bolt hole (12) through first high-strength bolt (10) and fix, and both ends and circular steel pipe (1) weld about semicircle wall steel pipe (4).

3. The rigid reinforced connection joint of the circular steel tube concrete column and the I-shaped steel beam as claimed in claim 1, which is characterized in that: the upper end and the lower end of a vertical stiffening plate (7) of the node component (3) are divided into a certain angle, the middle part of the vertical stiffening plate corresponds to the web part of an I-shaped steel beam (8), the width of a transverse stiffening plate (6) is set to be the same as the width of the flange of the I-shaped steel beam (8), an I-shaped cross section matched with the I-shaped steel beam (8) is formed, and a short steel beam (5) is welded so as to be connected with the I-shaped steel beam (8).

4. The rigid reinforced connection joint of the circular steel tube concrete column and the I-shaped steel beam as claimed in claim 1, which is characterized in that: the web plate of the short steel beam (5) is pre-provided with a second bolt hole (13) matched with the I-shaped steel beam (8) and the connecting plate (9), and the short steel beam is fixed through a second high-strength bolt (11) during installation and welded at the joint of flanges.

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