A steel structure assembly joint

Abstract

The utility model discloses a kind of steel structure assembly joints, it is related to steel structure technical field, the node includes I-beam, I-beam column and bolt system, I-beam end portion is fixed with inlay end piece, its inlay part is embedded in the steel column side groove of I-beam column, and inlay part is connected with the web of I-beam column by first bolt, second bolt, third bolt is transversely through the shank of second bolt and inlay part is locked with the wing plate of I-beam column, bolt interlocking structure is formed, greatly enhance the rigidity and torsional resistance of node, node bottom is provided with bearing platform to bear vertical force.The utility model has the advantages of clear force transmission path, strong bearing capacity, large overall stiffness, convenient and accurate installation, and high safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of steel structure technology, specifically a steel structure assembly node. Background Technology

[0002] In the field of steel structure engineering, the node connection between I-beams and I-beam columns is the key to ensuring the overall safety, stability and load transmission reliability of the structure. Traditional connection methods mainly include welding connection and bolt connection.

[0003] While welding can achieve strong rigid joints, it has problems such as difficulty in controlling on-site construction quality, large residual stress and deformation in welding, high technical requirements for operators, and long construction period. In addition, welded joints have relatively poor ductility and are prone to brittle failure under dynamic loads (such as earthquakes).

[0004] Therefore, fully prefabricated bolted connection methods have been widely used. The most common example is end plate connection, which involves welding an end plate to the beam end and connecting it to the column flange or a connecting plate welded to the column using high-strength bolts. For example, a steel structure assembly node disclosed in authorization announcement number CN210636602U.

[0005] However, this type of connection still has some inherent defects: First, its force transmission mainly relies on the shear resistance of the bolts and the bending resistance of the end plates. The stiffness of the joint area is limited, and it is prone to angular deformation when subjected to large bending moments.

[0006] Secondly, bolt groups are usually subjected to force in one plane, which is insufficient to resist the multidimensional complex forces (especially torsion) generated at the beam ends, and the overall stability needs to be improved;

[0007] In addition, the aforementioned prefabricated nodes often require temporary support and repeated adjustments during installation and positioning to ensure that the hole positions correspond, and there is still room for improvement in installation efficiency. Utility Model Content

[0008] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a steel structure assembly node with strong load-bearing capacity and high overall rigidity.

[0009] The technical solution adopted by this utility model to achieve the above objectives is: a steel structure assembly node, including an I-beam, an I-beam column, and a bolt system. The I-beam column has two sets of column side grooves, and the I-beam has two sets of beam side grooves. The mounting end of the I-beam is fixedly connected to a fitting end piece. The fitting end piece includes a mounting part and two sets of fitting parts fixedly connected to the bottom surface of the mounting part. The mounting part is fixedly connected to the mounting end of the I-beam, and the fitting parts are fitted into the column side grooves. The bolt system fixes the fitting parts to the I-beam.

[0010] In the above technical solution, the bolt system includes a first bolt and a second bolt, wherein the first bolt is fitted with a first nut and the second bolt is fitted with a second nut;

[0011] Both sets of the fitting parts are provided with multiple sets of first through holes arranged vertically, and both sets of the fitting parts are provided with second through holes corresponding to the side groove of the steel beam;

[0012] The web of the I-beam column is provided with a third perforation corresponding to the first perforation, and the web of the I-beam column is provided with a fourth perforation corresponding to the second perforation.

[0013] The first bolt passes through the first through hole and the third through hole, and the end of the first bolt is threadedly connected to the first nut;

[0014] The second bolt passes through the second through hole and the fourth through hole, and the end of the second bolt is threaded with the second nut.

[0015] In the above technical solution, the bolt system further includes a third bolt, which is fitted with a third nut;

[0016] The fitting part is provided with a fifth through hole corresponding to the side groove of the steel beam. The axis of the fifth through hole is perpendicular to the axis of the second through hole, and the fifth through hole penetrates the second through hole.

[0017] The flange of the I-beam column is provided with a sixth perforation corresponding to the fifth perforation;

[0018] The second bolt has a seventh through hole corresponding to the fifth through hole;

[0019] The third bolt passes through the fifth, sixth, and seventh through holes, and the end of the second bolt is threaded with the third nut.

[0020] In the above technical solution, a support platform is fixedly connected to the I-beam column, and the top surface of the support platform abuts against the bottom surface of the I-beam.

[0021] In the above technical solution, the bottom flange of the I-beam is provided with multiple sets of eighth through holes, and the bearing platform is provided with screw holes corresponding to each set of eighth through holes. The bolt system also includes a fourth bolt, which passes through the eighth through hole and is threaded into the screw hole.

[0022] In the above technical solution, a rubber pad is fixedly connected to the outer wall of the fitting part, and the rubber pad abuts against the inner wall of the steel column side groove.

[0023] The beneficial effects of this utility model are:

[0024] 1. The interlocking end piece can directly transfer the force and bending moment of the I-beam to the web of the column through the interlocking part, instead of relying solely on the shear of the bolts. Compared with directly welding the beam to the column or using simple connecting plates, the interlocking end piece can more smoothly diffuse and transfer the force to the I-beam column, which helps to reduce stress concentration and improve the fatigue performance of the joint. This allows the joint to withstand greater bending moment and shear force. In addition, the fit between the interlocking part and the side groove of the steel column can play a role in positioning and temporary support in the early stage of installation, enabling the I-beam to be quickly and accurately aligned, simplifying the installation process.

[0025] 2. The first and second bolts connect the mating end piece to the I-beam column. The third bolt passes through the second bolt and connects the mating part to the flange of the I-beam column. This effectively resists the torsion and out-of-plane displacement that may occur at the beam end, greatly enhancing the spatial stiffness and integrity of the joint. The combined action of multiple bolts forms a redundant load-bearing system. Even if one group of bolts fails under extreme conditions, the other bolts and the mating structure can still provide a certain load-bearing capacity, improving the safety reserve and seismic performance of the joint. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0028] Figure 3 This is an exploded structural diagram of the present invention;

[0029] Figure 4 This is a structural diagram of the present invention from another angle.

[0030] In the diagram: 100 I-beam, 101 steel beam side groove, 102 eighth perforation;

[0031] 200 I-beam column, 201 steel column side groove, 202 third perforation, 203 fourth perforation, 204 sixth perforation;

[0032] 300 Fitting end piece, 301 Mounting part, 302 Fitting part, 3021 First through hole, 3022 Second through hole, 3023 Fifth through hole;

[0033] 400 first bolt, 401 first nut;

[0034] 500 Second bolt, 501 Second nut, 502 Seventh through hole;

[0035] 600 third bolt, 601 third nut;

[0036] 700 foundation, 701 screw hole;

[0037] 800 Fourth Bolt. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figures 1-4 This utility model provides a steel structure assembly node, mainly used for a fully assembled rigid connection between an I-beam 100 and an I-beam column 200. Firstly, two sets of inwardly recessed steel column side grooves 201 are naturally formed on both sides of the web of the I-beam column 200, and two sets of inwardly recessed steel beam side grooves 101 are naturally formed on both sides of the web of the I-beam 100.

[0040] An interlocking end piece 300 is fixedly connected to the mounting end of the I-beam 100. The interlocking end piece 300 consists of a flat mounting part 301 and two sets of interlocking parts 302 extending vertically downward from the bottom surface of the mounting part 301. The mounting part 301 is fixed to the end face of the I-beam 100 by welding, so that the two sets of interlocking parts 302 can be precisely embedded in the two sets of steel column side grooves 201 of the I-beam 200.

[0041] To achieve a secure connection, a bolt system is used. Specifically, the bolt system includes a first bolt 400, a second bolt 500, and a third bolt 600, which are respectively fitted with a first nut 401, a second nut 501, and a third nut 601.

[0042] In each set of fitting parts 302, multiple sets of first through holes 3021 are arranged vertically. At the same time, multiple sets of third through holes 202 are opened on the web plate of the I-beam column 200 at positions corresponding to these first through holes 3021. During installation, the fitting parts 302 are inserted into the side grooves 201 of the steel column, and the first through holes 3021 and third through holes 202 are aligned. Then, the first bolt 400 is passed through the aligned first through holes 3021 and third through holes 202, and the first nut 401 is tightened at its end. This set of bolts mainly bears the vertical shear force in the node area.

[0043] In each set of fitting parts 302, a second through hole 3022 is provided at the position of the steel beam side groove 101 of the I-beam 100 itself. A fourth through hole 203 is provided on the web plate of the I-beam column 200 at the position of the second through hole 3022. The second bolt 500 is passed horizontally through the second through hole 3022 and the fourth through hole 203, and the second nut 501 is tightened at its end. This set of bolts mainly bears the vertical shear force in the node area.

[0044] To further enhance the spatial rigidity and torsional resistance of the nodes, a fifth through hole 3023 is provided on the fitting part 302 at the position corresponding to the steel beam side groove 101. The axis of the fifth through hole 3023 is perpendicular to the axis of the second through hole 3022, and it is designed as a through hole that passes through the second through hole 3022. Correspondingly, a sixth through hole 204 is provided on the flange of the I-beam column 200 at the position corresponding to the fifth through hole 3023. At the same time, a seventh through hole 502 is provided on the shank of the second bolt 500 at the position corresponding to the fifth through hole 3023.

[0045] During installation, before tightening the second nut 501, the third bolt 600 is first passed through the fifth through hole 3023, the sixth through hole 204 and the seventh through hole 502 on the body of the second bolt 500 in the horizontal longitudinal direction. Then, the third nut 601 is tightened at the end of the third bolt 600. In this way, the second bolt 500 and the fourth bolt 800 interlock, and the fitting part 302 is directly connected to the flange of the I-beam column 200, which greatly restricts the displacement in all directions.

[0046] To further optimize the support for the vertical load of the I-beam 100, a support platform 700 is fixedly connected to the I-beam column 200. The top surface of the support platform 700 abuts against the bottom flange of the I-beam 100. To fix this position, multiple sets of eighth through holes 102 are made on the bottom flange of the I-beam 100, and screw holes 701 are provided on the support platform 700 corresponding to the position of each set of eighth through holes 102. The bolt system also has a fourth bolt 800, which passes through the eighth through hole 102 and is screwed into the screw hole 701, thereby fastening the bottom of the I-beam 100 to the support platform 700 and preventing horizontal slippage.

[0047] As a preferred embodiment, a rubber pad can be fixedly attached to the outer wall of the fitting part 302. When the fitting part 302 is embedded in the steel column side groove 201, the rubber pad is in close contact with the inner wall of the groove. This can not only buffer vibration and noise, but also compensate for manufacturing tolerances and provide a certain degree of corrosion protection for the contact surface.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A steel structure assembly node, comprising an I-beam (100), an I-beam column (200), and a bolt system, wherein the I-beam column (200) has two sets of column side grooves (201), and the I-beam (100) has two sets of beam side grooves (101), characterized in that: The mounting end of the I-beam (100) is fixedly connected to a fitting end piece (300). The fitting end piece (300) includes a mounting part (301) and two sets of fitting parts (302) fixedly connected to the bottom surface of the mounting part (301). The mounting part (301) is fixedly connected to the mounting end of the I-beam (100). The fitting parts (302) are fitted into the side groove (201) of the steel column. The bolt system fixes the fitting parts (302) to the I-beam (100).

2. A steel structure assembly node according to claim 1, characterized in that: The bolt system includes a first bolt (400) and a second bolt (500), wherein the first bolt (400) is fitted with a first nut (401) and the second bolt (500) is fitted with a second nut (501); Both sets of fitting parts (302) are provided with multiple sets of first through holes (3021) arranged vertically, and both sets of fitting parts (302) are provided with second through holes (3022) corresponding to the steel beam side groove (101); The web of the I-beam column (200) is provided with a third perforation (202) corresponding to the first perforation (3021), and the web of the I-beam column (200) is provided with a fourth perforation (203) corresponding to the second perforation (3022). The first bolt (400) passes through the first through hole (3021) and the third through hole (202), and the end of the first bolt (400) is threadedly connected to the first nut (401); The second bolt (500) passes through the second through hole (3022) and the fourth through hole (203), and the end of the second bolt (500) is threadedly connected to the second nut (501).

3. A steel structure assembly node according to claim 2, characterized in that: The bolt system also includes a third bolt (600), which is fitted with a third nut (601); The fitting part (302) is provided with a fifth through hole (3023) corresponding to the steel beam side groove (101). The axis of the fifth through hole (3023) is perpendicular to the axis of the second through hole (3022), and the fifth through hole (3023) penetrates the second through hole (3022). The flange of the I-beam column (200) is provided with a sixth perforation (204) corresponding to the fifth perforation (3023); The second bolt (500) has a seventh through hole (502) corresponding to the fifth through hole (3023); The third bolt (600) passes through the fifth through hole (3023), the sixth through hole (204), and the seventh through hole (502), and the end of the second bolt (500) is threadedly connected to the third nut (601).

4. A steel structure assembly node according to claim 3, characterized in that: A support platform (700) is fixedly connected to the I-beam column (200), and the top surface of the support platform (700) abuts against the bottom surface of the I-beam beam (100).

5. A steel structure assembly node according to claim 4, characterized in that: The bottom flange of the I-beam (100) is provided with multiple sets of eighth through holes (102), and the bearing platform (700) is provided with screw holes (701) corresponding to each set of the eighth through holes (102). The bolt system also includes a fourth bolt (800), which passes through the eighth through hole (102) and is threaded into the screw hole (701).

6. A steel structure assembly node according to claim 1, characterized in that: A rubber pad is fixedly connected to the outer wall of the fitting part (302), and the rubber pad abuts against the inner wall of the steel column side groove (201).

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