A standardized light steel frame beam-column connection node and its installation method

Abstract

The present invention provides a standardized light steel frame beam-column connection node and an installation method thereof, which are used for connecting the tubular chord of the truss beam to the steel column in a standardized manner, and include a column hoop and a pipe support, wherein the column hoop is used for fixing and sleeved outside the steel column; the pipe support includes an integrally welded bottom plate and a pair of side bars, the bottom plate and the pair of side bars form an upper open square groove, and the square groove can just fit into the steel pipe to be connected; the cross section of the side bar is a C-shape opening outward; one end face of the pipe support is welded to the outer side face of the column hoop as a whole. The present invention realizes the standardization of the node connectors of the light steel frame beam-column connection, and can thereby realize the standardization of the operation of the node connection. The components of each node are interchangeable, and the quality is more reliable. It can be mass-produced, which improves the operation efficiency and product quality, shortens the construction period, and reduces the cost.

Description

Technical Field

[0001] The invention relates to steel structure building technology, and in particular to a standardized light steel frame beam-column connection node and an installation method thereof. Background Art

[0002] The existing technology for connecting frame beams and columns generally adopts the method of on-site welding, which requires equipment to be operated in mid-air at high altitudes. The operation is complicated, highly dependent on welding technology, and is dangerous. Recently, there has been practice of using bolt connection, and different connection structures are designed for different beam-column connection points. In this way, although the problems caused by high-altitude welding operations are solved, the workload of point-by-point design is large, the design cycle is long, and the components need to be absolutely corresponding. If a component is damaged, the construction can only be completed after waiting for factory production. Therefore, the present invention intends to design a standardized light steel frame beam-column connection node and its installation method, which is used to standardize the connection of truss beam tubular chords to steel columns, standardize the beam-column connection, and use interchangeable standard parts as connection nodes to improve work efficiency and quality and reduce construction costs. Summary of the invention

[0003] In view of the problems existing in the prior art, the technical solutions adopted by the present invention to solve the problems existing in the prior art are as follows:

[0004] A standardized light steel frame beam-column connection node includes a column hoop for connecting with a steel column and a pipe support for connecting with a truss beam tubular chord, characterized in that: the column hoop is columnar, with a circular rectangular cross-section, and is fixedly sleeved outside the steel column; the pipe support includes an integrally welded bottom plate and a pair of side bars, the bottom plate and the pair of side bars form an upper open square groove, in which the truss beam tubular chord to be connected is embedded; the cross-section of the side bar is a C-shape opening outward; the inner end face of the pipe support is welded integrally with the outer side face of the column hoop.

[0005] A horizontally arranged connecting plate is welded on the upper side of the pipe support, two ends of the connecting plate are respectively welded to a pair of side rods, one side of the connecting plate is welded to the column hoop, and the upper surface of the connecting plate is flush with the upper surface of the pair of side rods.

[0006] The side rod comprises a web and a pair of wing plates vertically connected to both sides of the web on the same side. A plurality of bolt holes are respectively arranged on the web and the bottom plate.

[0007] The truss beam tubular chord connecting portion is an upper opening shape with a portion of the top surface of the tube wall pre-cut away, and connection holes are preset on the two side surfaces and the bottom surface, which are respectively aligned with the side wall and bottom plate bolt holes corresponding to the tube support, and the truss beam tubular chord and the tube support are fixedly connected by bolts at the connection holes.

[0008] A plurality of preset holes are arranged on each side surface of the column hoop for being connected with the steel column by welding, bolting or screwing.

[0009] A pipe support is welded to one side surface, two opposite side surfaces, three side surfaces or four side surfaces of the column hoop.

[0010] A method for installing a standardized light steel frame beam-column connection node, characterized in that it comprises the following steps:

[0011] Step 1: Prepare prefabricated connection node components according to the connection direction and quantity, cut off the upper end surface of the tubular chord connection part of the truss beam to be connected, leave a horizontal edge of 1-2 cm from the cut upper end surface to the side surface, and preset fastening holes on the two side surfaces and bottom surfaces of the connection part according to the bolt hole positions on the side and bottom surfaces of the corresponding pipe support;

[0012] Step 2: On site, turn the pipe support toward the connection direction, put the column hoop on the outside of the steel column of the designed height, adjust the height of the column hoop so that the inner bottom surface height of the pipe support is consistent with the bottom surface height of the tubular chord of the truss beam, and use self-tapping screws or bolts to pass through the preset holes of the column hoop and fasten it to the steel column to keep the pipe support level;

[0013] Step 3: insert the tubular chord of the truss beam to be connected into the square groove of the pipe support, and fasten the connection by passing the fastening bolts through the bolt holes of the pipe support and the fastening holes at the corresponding positions of the tubular chord of the truss beam;

[0014] Step 4: After all connections are completed, fill the square groove with concrete slurry. Cover the connecting bolts with the concrete slurry, vibrate it, and wait for it to solidify.

[0015] The present invention has the following advantages:

[0016] The present invention realizes the standardization of the connectors of the light steel frame beam-column connection nodes, and can thus realize the standardization of the node connection operation. After the standardized connectors are used between the connection nodes, the components of each node can be interchanged, and the steel columns and beam frames of standardized construction are all constructed with standardized profiles, so they can be commonly used in the industry. Standardized production can be used to test the quality of the connector products in the factory, and the quality is more reliable. Batch production can be achieved, which improves the operating efficiency and product quality, shortens the construction period, and reduces the cost.

[0017] The structure of the connector is also different from the simple steel plate or angle steel connector in the prior art. It adopts a small space-consuming pipe support and column hoop structure, which does not require additional space and avoids the inconvenience of connection in most special cases. A pair of C-shaped steel and connecting plates are welded around the four sides of the pipe groove, with high connection strength and large bearing capacity, which is suitable for the vast majority of frame beam-column connection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2is a schematic diagram of an application embodiment 1 of the present invention;

[0020] Figure 3 is a schematic diagram of a second application embodiment of the present invention;

[0021] In the figure: 1—steel column, 2—column hoop, 3—connecting plate, 4—bottom plate, 5—pipe support, 6—tubular chord of truss beam, 7—web plate, 8—flange plate, 9—side bar, 10—bolt hole, 11—preset hole. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. Figure 2 , 3 The example shown in FIG. 1 is an application example of a standardized light steel frame beam-column connection node, which is used to connect a truss beam tubular chord 6 to a steel column 1 in a standardized manner.

[0023] like Figure 1 The connection node includes two parts: the column hoop 2 and the pipe support 5.

[0024] The column hoop 2 is columnar, with a circular rectangular cross section, and is fixedly sleeved outside the steel column 1. Since the steel column adopts a square rectangular profile, the size of the column hoop is easy to form a series, and the column hoop is just sleeved outside the steel column. Preset holes 11 are arranged on the side of the column hoop for fixing with the steel column by plug welding or hole welding, and through holes can also be set to be fixedly connected with the steel column by bolts and screws.

[0025] The pipe support 5 is provided with an integrally welded bottom plate 4 and a pair of side bars 9, which enclose a square groove with an upper opening, into which the steel pipe to be connected can be inserted. The surface of the enclosed square groove is smooth and can be directly fitted into the chord of the truss beam. One end face of the pipe support 5 is welded to the outer side face of the column hoop 2. The cross section of the side bar 9 is a C-shape with an opening facing outward. The C-shaped side bar 9 is provided with a web 7 and a pair of wing plates 8 on both sides of the web, which can not only increase the strength, but also increase the welding area of ​​the end.

[0026] A connecting plate 3 is welded to the upper side of the pipe support 5, and the two ends of the connecting plate are respectively welded to a pair of side rods 9. The connecting plate 3 greatly enhances the rigidity of the pipe support and prevents deformation caused by stress.

[0027] One side of the connecting plate 3 is welded to the column hoop 2. Therefore, the end of the pipe support is welded to the side of the column hoop all around, and the connection strength is high.

[0028] The connecting plate 3 is flush with the upper surface of a pair of side rods 9, so as to optimize the anti-deformation and connection stress performance of the pipe support.

[0029] A plurality of bolt holes are respectively arranged on the web and the bottom plate for fixing the connection with the chord steel pipe. The connection part of the steel pipe needs to cut the top pipe wall to fix the bolts.

[0030] A pipe support is welded on one side, two opposite sides, three sides or four sides of the column hoop 2. Figure 2 It is the application of connecting the truss beam on one side of the column hoop. The column hoop has a pipe support welded on only one side. Figure 3 The column hoop 2 is used to be fixed to the steel column, and its preset holes 11 are arranged in the non-welding area.

[0031] When in use, the column hoop is set at the set position of the steel column and fixed by welding, bolts or screws. The pipe support is facing the direction of the connected truss beam. The connecting end of the truss beam chord steel pipe is pre-cut off part of the side wall of the top surface, and the connection hole is preset. The connecting end of the steel pipe is inserted into the square groove of the pipe support. The bolt holes of the side wall and bottom plate of the pipe support are aligned with the preset connection holes of the steel pipe, and the connection is fixed with bolts. After connection, grouting and vibration can be performed in the steel pipe to enhance the compressive strength of the node.

[0032] The protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope and spirit of the present invention. If these changes and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these changes and modifications.

Claims

1. A standardized light steel frame beam-column connection node, comprising a column hoop for connecting with a steel column and a pipe bracket for connecting with a truss beam tubular chord, characterized in that: The column hoop is columnar, with a circular rectangular cross section, and is used for fixed sleeve outside the steel column; the pipe support includes an integrally welded bottom plate and a pair of side bars, the bottom plate and the pair of side bars form a square groove with an upper opening, and the square groove is embedded with a tubular chord of the truss beam to be connected; the cross section of the side bar is a C-shape with an opening facing outward; the inner end surface of the pipe support is welded to the outer side surface of the column hoop as a whole; a horizontally arranged connecting plate is welded to the upper side surface of the pipe support, and the two ends of the connecting plate are respectively welded to a pair of side bars; One side of the connecting plate is welded to the column hoop, and the upper surface of the connecting plate is flush with the upper surfaces of the pair of side rods; The side bar includes a web and a pair of wing plates vertically connected to both sides of the web on the same side, and a plurality of bolt holes are respectively provided on the web and the bottom plate; The truss beam tubular chord connecting portion is an upper opening shape with a portion of the top surface of the tube wall pre-cut away, and connection holes are preset on the two side surfaces and the bottom surface, which are respectively aligned with the side wall and bottom plate bolt holes corresponding to the tube support, and the truss beam tubular chord and the tube support are fixedly connected by bolts at the connection holes.

2. A standardized light steel frame beam-column connection node as claimed in claim 1, characterized in that: A plurality of preset holes are arranged on each side surface of the column hoop for being connected with the steel column by welding, bolting or screwing.

3. A standardized light steel frame beam-column connection node as claimed in claim 1, characterized in that: A pipe support is welded to one side surface, two opposite side surfaces, three side surfaces or four side surfaces of the column hoop.

4. A method for installing a standardized light steel frame beam-column connection node according to any one of claims 1 to 3, characterized in that: The steps include: Step 1: Prepare prefabricated connection node components according to the connection direction and quantity, cut off the upper end surface of the tubular chord connection part of the truss beam to be connected, leave a horizontal edge of 1-2 cm from the cut upper end surface to the side surface, and preset fastening holes on the two side surfaces and bottom surfaces of the connection part according to the bolt hole positions on the side and bottom surfaces of the corresponding pipe support; Step 2: On site, turn the pipe support toward the connection direction, put the column hoop on the outside of the steel column of the designed height, adjust the height of the column hoop so that the inner bottom surface height of the pipe support is consistent with the bottom surface height of the tubular chord of the truss beam, and use self-tapping screws or bolts to pass through the preset holes of the column hoop and fasten it to the steel column to keep the pipe support level; Step 3: insert the tubular chord of the truss beam to be connected into the square groove of the pipe support, and fasten the connection by passing the fastening bolts through the bolt holes of the pipe support and the fastening holes at the corresponding positions of the tubular chord of the truss beam; Step 4: After all connections are completed, fill the square groove with concrete slurry. Cover the connecting bolts with the concrete slurry, vibrate it, and wait for it to solidify.

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