Connecting structure of steel beam
By using box girder or I-beam connection structures and internal connecting plates and fasteners to achieve equal strength connections, the safety and flatness issues of steel beam connections in existing technologies are solved, making it suitable for the construction of long-span bridges.
Patent Information
- Application Number
- CN202520489841.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing steel beam connection methods pose risks such as high-altitude welding, significant material waste, and the inability to achieve strong connections with bolts, thus failing to meet the construction requirements of long-span bridges.
The connection structure adopts box girder or I-beam, and the first connecting plate is fixed on the inner surface of the flange. The web plate is sandwiched by the flange connecting plate and the second connecting plate. The fasteners are used to achieve equal strength connection. The bolt heads are hidden in the flange to ensure flatness.
It achieves safety and flatness in steel beam connections, reduces construction hazards, facilitates dismantling, and ensures uniform strength of connection nodes, making it suitable for the construction of long-span bridges.
Smart Images
Figure CN223922391U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge construction equipment technical field especially relates to a connecting structure of steel beam. BACKGROUND
[0002] At present, the single longest steel beam is up to 12 meters due to the raw material and transportation size limitation, however, with the development of bridge industry, a large number of bridge support projects with the width greater than 12 meters in the transverse direction of bridge appear, at this time, the length of the original steel beam cannot meet the requirements of such projects, and the steel beam needs to be longitudinally lengthened.
[0003] In the prior art, the connection of adjacent steel beams is through high-altitude welding or bolt connection, and the prior art has the following problems: when high-altitude welding, the danger coefficient is high, and when disassembling at the end of use, the weld needs to be cut, which has high danger coefficient and large material loss; when bolt connection, the steel beam lengthening node cannot be connected with equal strength. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problems existing in the prior art, and provides a connecting structure of steel beam which replaces welding and realizes equal strength connection after the steel beam is connected.
[0005] The utility model adopts the technical scheme of a connecting structure of steel beam, which comprises a box beam or an I-beam, the box beam or the I-beam comprises a web plate, wing plates fixed to the upper and lower ends of the web plate respectively, the inner surface of the wing plate is fixedly connected with a first connecting plate, the first connecting plate is provided with a first opening, the wing plate is provided with a second opening corresponding to the first opening, the aperture size of the second opening is greater than that of the first opening, a wing part connecting plate is arranged on the inner surface of the first connecting plate, the wing part connecting plate is provided with a third opening, and the web plate is provided with a plurality of fourth openings; after the two box beams or the two I-beams are butted and combined, the wing part connecting plate connects the wing plates of the two box beams or the two I-beams, the wing part connecting plate and the first connecting plate are fixedly connected through fasteners, the fasteners comprise bolts and nuts threadedly connected with the bolts, the bolt head of the bolt is located in the second opening, and the bolt rod of the bolt is threadedly connected with the nut after penetrating through the first opening and the third opening; the front and back sides of the web plate are respectively provided with second connecting plates, the second connecting plates are provided with a plurality of fifth openings, the two second connecting plates sandwich the web plate of the other box beam or I-beam, the fifth openings and the fourth openings are in position correspondence and are connected through fasteners.
[0006] One end of the first connecting plate does not exceed one end of the web plate.
[0007] The thickness of the bolt head is less than or equal to the thickness of the wing plate.
[0008] The box beam or the I-beam is integrally formed of steel or welded.
[0009] The utility model discloses two wing plates between being equipped with the support board, the support board upper and lower two ends are fixedly connected with the first connecting plate of wing plate or fixed connection, and the support board is perpendicular to the web plate arrangement.
[0010] The utility model discloses two wing plates between being equipped with the reinforcing plate, and the upper and lower two ends of reinforcing plate are fixedly connected with the first connecting plate of wing plate or fixed connection, and the reinforcing plate is along the length direction of web plate arrangement.
[0011] The utility model discloses the reinforcing plate includes a board material, and the both ends of board material are bent and form the bending part.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] Compared with the prior art, the utility model has the beneficial effects that: The first connecting plate is fixedly connected with the wing plate connecting plate through the inner face, the wing plate connecting plate connects the wing plate of two box type beams or two I-shaped beams, two second connecting plates are clamped to the web plate of two box type beams or two I-shaped beams, thereby realizing the connection of adjacent box type beams or I-shaped beams, and the strength of the connecting node of two box type beams or two I-shaped beams is strengthened through the cooperation of the first connecting plate, the wing plate connecting plate and the second connecting plate, so that the connected box type beam or I-shaped beam is in equal strength connection. When the wing plate connecting plate is connected with the first connecting plate, the bolt head is in the second opening of the wing plate, and the thickness of the bolt head is less than or equal to the thickness of the wing plate, so that the outer surface of the wing plate is not protruding after the connection of two box type beams or two I-shaped beams. The flatness of the connected box type beam or I-shaped beam is ensured, and the transverse removal work of the box type beam or I-shaped beam is facilitated after the construction is completed. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is the structure schematic diagram of the utility model.
[0015] Fig. 2 It is the structure schematic diagram of the utility model in the exploded state. DETAILED DESCRIPTION
[0016] The utility model will be further described in connection with the drawings and through the embodiment.
[0017] As Figs. 1-2As shown, the steel beam connecting structure of the embodiment comprises a box beam or an I-beam 1, the box beam or the I-beam 1 comprises a web plate 2, wing plates 3 fixedly connected to the upper and lower ends of the web plate 2 respectively, the inner surface of the wing plate 3 is fixedly connected with a first connecting plate 4, the first connecting plate 4 is provided with a first opening 41, the wing plate 3 is provided with a second opening 31 corresponding to the first opening 41, the aperture size of the second opening 31 is greater than the aperture size of the first opening 41, the inner surface of the first connecting plate 4 is provided with a wing connecting plate 5, the wing connecting plate 5 is provided with a third opening 51, and the web plate 2 is provided with a plurality of fourth openings 21; after the two box beams or the two I-beams 1 are butted and combined, the wing connecting plate 5 connects the wing plates 3 of the two box beams or the two I-beams 1, the wing connecting plate 5 and the first connecting plate 4 are fixedly connected through a fastener 6, the fastener 6 comprises a bolt 61 and a nut 62 threadedly connected with the bolt 61, the bolt head of the bolt 61 is in the second opening 31, and the bolt shank of the bolt 61 is threadedly connected with the nut 62 after passing through the first opening 41 and the third opening 51; the front and back sides of the web plate 2 are respectively provided with second connecting plates 7, the second connecting plates 7 are provided with a plurality of fifth openings 71, the two second connecting plates 7 sandwich the web plate 2 of the other box beam or I-beam 1, the fifth openings 71 and the fourth openings 21 are positionally corresponding and are connected through the fastener 6; the inner surface of the wing plate 3 of the embodiment is fixedly connected with the first connecting plate 4, the inner surface of the first connecting plate 4 is fixedly connected with the wing connecting plate 5, the wing connecting plate 5 connects the wing plates 3 of the two box beams or the two I-beams, and the two second connecting plates 7 sandwich the web plates 2 of the two box beams or the two I-beams 1, so that the connection of the adjacent box beams or I-beams 1 is realized, the strength of the connecting joint of the two box beams or the two I-beams 1 is strengthened through the cooperation of the first connecting plate 4, the wing connecting plate 5 and the second connecting plate 7, and the equal strength connection of the connected box beams or I-beams is realized; when the wing connecting plate 5 and the first connecting plate 4 are connected, the bolt head is in the second opening of the wing plate 3, so that the outer surface of the wing plate 5 is flat after the connection of the two box beams or the two I-beams 1.
[0018] One end of the first connecting plate 4 of the embodiment does not exceed one end of the web plate 2; the close butt joint of the wing plate 3 is realized when the adjacent box beams or I-beams 1 are spliced.
[0019] The thickness of the bolt head of the bolt 61 of the embodiment is less than or equal to the thickness of the wing plate 3, so that the outer side of the wing plate 3 is not protruding, the flatness of the connected box beams or I-beams 1 is ensured, and the transverse removal work of the box beams or I-beams 1 is facilitated after the construction is completed.
[0020] As preferred: the box beam or the I-beam 1 of the embodiment is integrally formed from steel or is welded; the box beam or the I-beam 1 integrally formed from steel or welded increases the strength of the box beam or the I-beam 1 and reduces the occurrence of fracture at the splicing position.
[0021] The support plate 8 is arranged between the two wing plates 3, and the upper and lower ends of the support plate 8 are fixedly connected with the wing plates 3 or the first connecting plates 4 fixedly connected with the wing plates 3. According to the different positions of the support plate 8, the upper and lower ends of the support plate 8 are fixedly connected with the wing plates 3 or the first connecting plates 4. The support plate 8 is arranged perpendicularly to the web plate 2. The support plate 8 can increase the shearing capacity of the box beam or the I beam 1.
[0022] The reinforcing plate 9 is arranged between the two wing plates 3, and the upper and lower ends of the reinforcing plate 9 are fixedly connected with the wing plates 3 or the first connecting plates 4 fixedly connected with the wing plates 3. According to the different positions of the reinforcing plate 9, the upper and lower ends of the reinforcing plate 9 are fixedly connected with the wing plates 3 or the first connecting plates 4. The reinforcing plate 9 is arranged along the length direction of the web plate 2. The reinforcing plate 9 comprises a plate material 91, and the two ends of the plate material 91 are bent to form bending parts 92. The reinforcing plate 9 can increase the strength of the wing plates 3 of the box beam or the I beam 1.
Claims
1. A connecting structure of a steel beam, comprising a box beam or an I-beam (1) including a web (2) and flanges (3) fixedly connected to the upper and lower ends of the web (2), respectively, characterized in that, The inner surface of the wing plate (3) is fixedly connected with a first connecting plate (4), the first connecting plate (4) is provided with a first opening (41), the wing plate (3) is provided with a second opening (31) corresponding to the first opening (41), the aperture size of the second opening (31) is greater than the aperture size of the first opening (41), a wing connecting plate (5) is arranged on the inner surface of the first connecting plate (4), the wing connecting plate (5) is provided with a third opening (51), and the web plate (2) is provided with a plurality of fourth openings (21). After the butt joint of the two box beams or the two I-shaped beams (1), the wing connecting plate (5) connects the wing plates (3) of the two box beams or the two I-shaped beams (1), the wing connecting plate (5) and the first connecting plate (4) are fixedly connected through fasteners (6), the fasteners (6) include bolts (61) and nuts (62) threadedly connected with the bolts (61), the bolt head of the bolt (61) is located in the second opening (31), and the screw rod of the bolt (61) is threadedly connected with the nut (62) after penetrating through the first opening (41) and the third opening (51); the front and rear sides of the web plate (2) are respectively provided with second connecting plates (7), the second connecting plates (7) are provided with a plurality of fifth openings (71), the two second connecting plates (7) clasp the web plates (2) of the other box beams or I-shaped beams (1) and the fifth openings (71) and the fourth openings (21) are in position correspondence and are connected through the fasteners (6).
2. A connection structure for steel beams according to claim 1, characterized in that One end of the first connecting plate (4) does not exceed one end of the web plate (2).
3. A connection structure for steel beams according to claim 1, characterized in that The thickness of the bolt head is less than or equal to the thickness of the wing plate (3).
4. The steel beam connection structure as described in claim 1, characterized in that, The box beam or the I-shaped beam (1) is integrally formed of steel or is welded.
5. A steel beam connection according to claim 1, wherein Support plates (8) are arranged between the two wing plates (3), the upper and lower ends of the support plates (8) are fixedly connected with the wing plates (3) or the first connecting plates (4) fixedly connected with the wing plates (3), and the support plates (8) are arranged perpendicularly to the web plate (2).
6. A steel beam connection according to claim 1, wherein Strengthening plates (9) are arranged between the two wing plates (3), the upper and lower ends of the strengthening plates (9) are fixedly connected with the wing plates (3) or the first connecting plates (4) fixedly connected with the wing plates (3), and the strengthening plates (9) are arranged along the length direction of the web plate (2).
7. A connection structure for steel beams according to claim 6, wherein The strengthening plate (9) includes a plate material (91), and both ends of the plate material (91) are bent to form bending portions (92).