A fully-bonded beam joint

Abstract

The utility model discloses a kind of full bolted beam beam connecting nodes, in connecting node area, the upper flange of two beams is provided with connecting cover plate above and / or below, part of connecting cover plate is in conformity with one of beam, another part of connecting cover plate is in conformity with another beam, connecting cover plate and the upper flange of two beams are connected by bolt, the side of the upper flange of two beams is provided with L-shaped backing plate;Each L-shaped backing plate includes vertical plate and horizontal plate perpendicular, vertical plate is connected with beam, the upper surface of horizontal plate is flush with the upper surface of upper flange;In connecting node area, profiled steel plate bottom die is set on the horizontal plate of L-shaped backing plate;Outside connecting node area, profiled steel plate bottom die is set on the upper flange of beam.This scheme can guarantee that profiled steel plate bottom die is flat, to guarantee the flatness of floor when concrete pouring, meanwhile, there is no larger gap between profiled steel plate bottom die and beam, avoid leakage.

Description

Technical Field

[0001] This utility model belongs to the field of building connection structure technology, and specifically relates to a fully bolted beam-beam connection node. Background Technology

[0002] Currently, profiled steel sheet formwork is generally used as the template for pouring concrete in steel frame structure floor slabs during construction. When laying the profiled steel sheet, it is usually directly erected on the upper flange of the steel beam. When using a fully bolted beam-to-beam connection scheme, connecting cover plates are required on both the upper and lower flanges of the beam. These cover plates are located on the upper and lower sides of the beam flange, which results in the top of the beam being locally higher than other positions in the joint area, typically by about 10mm to 30mm. High-strength bolts are then used to connect the two beam sections by passing through the connecting cover plates and the beam flanges. During the laying of the profiled steel sheet formwork, the joint area is locally raised. This is illustrated in the background art of Chinese invention patent application CN116163416A. This localized raising of the profiled steel sheet in the joint area during laying leads to unevenness at the bottom of the sheet, and the local height difference at the edge of the upper flange cover plate in the beam-to-beam connection area can easily cause concrete leakage at this location. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fully bolted beam connection node, which avoids the local lifting of the bottom formwork of the profiled steel sheet at the connection node position, and solves the drawbacks of uneven bottom surface or the need for more complex component processing or construction process during roof panel pouring.

[0004] According to the technical solution of this utility model, this utility model provides a fully bolted beam connection node. The connection node is located at the joint of two beams. In the connection node area, a connection cover plate is provided above and / or below the upper flanges of the two beams. A part of the connection cover plate is attached to one of the beams, and the other part of the connection cover plate is attached to the other beam. The connection cover plate and the upper flanges of the two beams are connected by bolts. L-shaped support plates are provided on the sides of the upper flanges of the two beams. Each L-shaped support plate includes a vertical plate and a horizontal plate that are perpendicular to each other. The vertical plate is connected to the beam, and the upper surface of the horizontal plate is flush with the upper surface of the upper flange. In the connection node area, the profiled steel sheet bottom mold is erected on the horizontal plate of the L-shaped support plate. Outside the connection node area, the profiled steel sheet bottom mold is erected on the upper flange of the beam.

[0005] In some implementations, the length of the L-shaped tray is not less than the length of the connecting cover plate.

[0006] In some embodiments, a portion of the vertical plate of the L-shaped support is welded to the side of the upper flange of one of the beams, and another portion of the vertical plate of the L-shaped support is welded to the side of the upper flange of another beam.

[0007] In some implementations, the beam has an I-shaped cross-section, with a horizontal upper flange at the top and a horizontal lower flange at the bottom, and a web between the upper and lower flanges.

[0008] In some embodiments, three connecting cover plates are provided in the connection node area, wherein the first connecting cover plate is located above the upper flange of the two beams, and the second and third connecting cover plates are located below the upper flange of the two beams and are respectively located on both sides of the web.

[0009] In some implementations, the three connecting covers are flush with the two side edges of the upper flange on the outer side.

[0010] In some embodiments, in the connection node area, a web connecting plate is provided on one or both sides of the web of the two beams, a part of the web connecting plate is attached to one of the beams, and the other part of the web connecting plate is attached to the other beam, and the web connecting plate and the web of the two beams are connected by bolts.

[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0012] The fully bolted beam connection node of this utility model has L-shaped support plates on both sides of the node. This allows the profiled steel sheet bottom formwork to be erected on the L-shaped support plates in the node area, while outside the node area, the profiled steel sheet bottom formwork is erected on the upper flange of the beam. Since the top surface of the L-shaped support plate is flush with the top surface of the upper flange, the profiled steel sheet bottom formwork can be kept flat, thereby ensuring the flatness of the floor slab during concrete pouring. At the same time, there is no large gap between the profiled steel sheet bottom formwork and the beam, avoiding grout leakage. Attached Figure Description

[0013] Figure 1 This is a top-view perspective structural diagram of the connection node provided by this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the AA plane.

[0015] Figure 3 This is a schematic diagram of the bottom mold setting method for profiled steel sheets provided by this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Beam; 11. Upper flange; 12. Web; 13. Lower flange; 2. Connecting cover plate; 3. L-shaped support plate; 4. Web connecting plate. Detailed Implementation

[0018] This utility model provides a fully bolted beam-to-beam connection node. The basic solution of this utility model is to set L-shaped support plates twice on the upper flange of the beam in the beam-to-beam connection node area, so that the top surface of the L-shaped support plate is flush with the top surface of the beam. This ensures that the profiled steel sheet can remain flat at the bottom of the node area and avoids local lifting. This solves the drawbacks of uneven bottom surface or the need for more complex component processing or construction process during roof panel pouring. It ensures that the bottom formwork of the profiled steel sheet can be laid flat in the node area, ensures the flatness of the bottom plate, and avoids concrete leakage at the node position.

[0019] Please see Figure 1 , Figure 2 This utility model discloses a fully bolted beam connection node. The connection node is located at the joint of two beams 1. In the connection node area, a connecting cover plate 2 is provided above and / or below the upper flange 11 of the two beams 1. A part of the connecting cover plate 2 is attached to the upper surface of the upper flange of one beam, and the other part of the connecting cover plate 2 is attached to the upper surface of the upper flange of the other beam. The connecting cover plate 2 and the upper flange 11 of the two beams 1 are connected by bolts. L-shaped support plates 3 are provided on the sides of the upper flange 11 of the two beams 1. The cross-section of each L-shaped support plate 3 is inverted L-shaped, and each includes a vertical plate and a horizontal plate that are perpendicular to each other. The vertical plate is connected to the beam 1, and the horizontal plate is located above the vertical plate. The upper surface of the horizontal plate is flush with the upper surface of the upper flange 11.

[0020] In the connection node area, the profiled steel sheet bottom formwork is erected on the transverse plate of the L-shaped support plate 3. Since the top surface of the L-shaped support plate is flush with the top surface of the upper flange of the beam, it ensures that the profiled steel sheet bottom formwork does not need to be locally raised when laid within the connection node area. Outside the connection node area, the profiled steel sheet bottom formwork is erected on the upper flange 11 of the beam 1.

[0021] More specifically, the length of the L-shaped support plate 3 is not less than the length of the connecting cover plate 2. In this design, the length range covered by the connecting cover plate 2 is referred to as the connecting node area. For example... Figure 1 In the embodiment shown, the length of the L-shaped support plate 3 is the same as the length of the connecting cover plate 2, and it is centered relative to the connecting node area. The midpoint of the length of the connecting cover plate 2 corresponds to the joint where the two beams 1 meet. Each beam 1 is bolted and fixed to the connecting cover plate 2 of normal length.

[0022] In the embodiment, a portion of the vertical plate of the L-shaped support plate 3 is welded and fixed to the side of the upper flange 11 of one of the beams, and another portion of the vertical plate of the L-shaped support plate 3 is welded and fixed to the side of the upper flange 11 of another beam.

[0023] More specifically, beam 1 is a steel beam with an I-shaped cross-section. The upper part of beam 1 is a horizontal upper flange 11, and the lower part of beam 1 is a horizontal lower flange 13. The web 12 is located between the upper flange 11 and the lower flange 13.

[0024] Please see Figure 2 Furthermore, in the connection node area, a total of three connection cover plates 2 are provided. The first connection cover plate is located above the upper flange 11 of the two beams 1, and the second and third connection cover plates are located below the upper flange 11 of the two beams 1 and on both sides of the web 12, respectively. Each connection cover plate 2 is connected to both beams 1. Compared with the traditional solution of only setting connection cover plates at the top, the stability of the connection can be further improved by setting multiple connection cover plates in this way.

[0025] Furthermore, the three connecting cover plates 2 are flush with the two side edges of the upper flange 11 on the outer side, that is... Figure 2 The left side of the upper flange 11 and the left side of the adjacent connecting cover plate 2 are flush, as are the right side. More specifically, each bolt passes through the upper flange 11 and the connecting cover plates 2 above and below it for fixation. Optionally, during construction, the connecting cover plate 2 is installed and fixed first, and then the L-shaped support plate 3 is welded and fixed. The upper surface of the L-shaped support plate 3 forms an angle with the side of the upper connecting cover plate 2, and welding is performed at this angle. The inward side of the vertical plate of the L-shaped support plate 3 forms an angle with the bottom surface of the lower connecting cover plate 2, and welding is performed at this angle. This completes the welding and fixing of the L-shaped support plate 3.

[0026] like Figure 1 In the embodiment shown, in the connection node area, a web plate connecting plate 4 is provided on one or both sides of the web plate 12 of the two beams 1. A part of the web plate connecting plate 4 is attached to one of the beams, and another part of the web plate connecting plate 4 is attached to the other beam. The web plate connecting plate 4 and the web plate 12 of the two beams 1 are connected by bolts to further ensure the stability and reliability of the beam connection.

[0027] As a supplementary explanation, a bolt includes, for example, a bolt head, a threaded rod, and a matching nut; the bolt positions are only schematically shown in the figure. Generally, the lower flanges 13 of the two beams 1 are also connected by connecting cover plates. Preferably, the connecting cover plates at the lower flange 13 are consistent with those at the upper flange 11 (symmetrical), with three connecting cover plates provided on both the upper and lower sides. In the illustrated embodiment, L-shaped support plates 3 are provided on both sides of the upper flange 11; it is conceivable that, for example, on a beam corresponding to the edge of the floor slab, an L-shaped support plate 3 could be provided only on the inner side to overlap the profiled steel sheet bottom mold. Please refer to... Figure 3This is a schematic diagram of the profiled steel sheet bottom mold setup from a top-down perspective. The dashed box indicates the profiled steel sheet bottom mold, which is spliced ​​between multiple sheets. In traditional solutions, the profiled steel sheet bottom mold at the middle connection node overlaps the upper flange (the upper connecting cover plate) like the side panels. Overlapping is generally done by welding, and the specific method of overlapping the profiled steel sheet bottom mold is existing technology. This utility model only proposes preferred solutions for the connection node structure and the position of the profiled steel sheet bottom mold. Other required structures and specific construction schemes are not the focus of this utility model's improvement and will not be elaborated upon.

[0028] In summary, the fully bolted beam connection node of this utility model has L-shaped support plates on both sides of the node, which allows the profiled steel sheet bottom formwork to be erected on the L-shaped support plates in the node area, while outside the node area, the profiled steel sheet bottom formwork is erected on the upper flange of the beam. Since the top surface of the L-shaped support plate is flush with the top surface of the upper flange, the profiled steel sheet bottom formwork can be kept flat, thereby ensuring the flatness of the floor slab during concrete pouring. At the same time, there is no large gap between the profiled steel sheet bottom formwork and the beam, avoiding grout leakage.

Claims

1. A fully bolted beam-to-beam connection node, characterized in that, The connection node is located at the junction of two beams (1). In the connection node area, a connection cover plate (2) is provided above and / or below the upper flange (11) of the two beams (1). A part of the connection cover plate (2) is attached to one of the beams, and the other part of the connection cover plate (2) is attached to the other beam. The connection cover plate (2) and the upper flange (11) of the two beams (1) are connected by bolts. An L-shaped support plate (3) is provided on the side of the upper flange (11) of the two beams (1). Each L-shaped support plate (3) includes a vertical plate and a horizontal plate that are perpendicular to each other. The vertical plate is connected to the beam (1), and the upper surface of the horizontal plate is flush with the upper surface of the upper flange (11). In the connection node area, the profiled steel sheet bottom mold is erected on the horizontal plate of the L-shaped support plate (3). Outside the connection node area, the profiled steel sheet bottom mold is erected on the upper flange (11) of the beam (1).

2. The fully bolted beam-beam connection node according to claim 1, characterized in that, The length range of the L-shaped tray (3) is not less than the length range of the connecting cover plate (2).

3. The fully bolted beam-to-beam connection node according to claim 1, characterized in that, A portion of the vertical plate of the L-shaped support plate (3) is welded and fixed to the side of the upper flange (11) of one of the beams, and another portion of the vertical plate of the L-shaped support plate (3) is welded and fixed to the side of the upper flange (11) of another beam.

4. The fully bolted beam-beam connection node according to any one of claims 1-3, characterized in that, The cross section of the beam (1) is I-shaped. The upper part of the beam (1) is a horizontal upper flange (11), and the lower part of the beam (1) is a horizontal lower flange (13). The web (12) is between the upper flange (11) and the lower flange (13).

5. The fully bolted beam-beam connection node according to claim 4, characterized in that, In the connection node area, there are three connection cover plates (2), the first connection cover plate is located above the upper flange (11) of the two beams (1), the second connection cover plate and the third connection cover plate are located below the upper flange (11) of the two beams (1) and are located on both sides of the web plate (12).

6. The fully bolted beam-beam connection node according to claim 5, characterized in that, The three connecting covers (2) are flush with the two sides of the upper flange (11) on the outer side.

7. The fully bolted beam-beam connection node according to claim 4, characterized in that, In the connection node area, a web plate connecting plate (4) is provided on one or both sides of the web plate (12) of the two beams (1). A part of the web plate connecting plate (4) is attached to one of the beams, and the other part of the web plate connecting plate (4) is attached to the other beam. The web plate connecting plate (4) and the web plate (12) of the two beams (1) are connected by bolts.

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