H-shaped steel main and secondary beam rigid joint structure

Abstract

The application discloses a kind of H-shaped steel main beam secondary beam rigid joint structure, the main beam includes first upper flange plate, first lower flange plate and first web, the present application relates to steel member technical field.The H-shaped steel main beam secondary beam rigid joint structure, so that the main beam and secondary beam do not need to be welded in many places, reduce construction time and energy, also can avoid the problem that the heat accumulation caused by multi-position welding leads to local stress concentration, reduce the thermal deformation of structure, and the upper flange of two secondary beams and the upper flange of main beam are connected by connecting plate and first high-strength bolt, the two secondary beams can resist negative bending moment at support, form a rigid joint that can effectively transfer bending moment, and when the size of secondary beam is larger, pull out the sliding plate from the inside of connecting plate, use L-shaped clamping plate to clamp the first upper flange plate of secondary beam, and then use the fifth high-strength bolt to fix, so that the stability of bending moment transmission is higher, and it is not easy to shake.

Description

Technical Field

[0001] This invention relates to the field of steel structure technology, specifically to a rigid connection structure for H-beam primary and secondary beams. Background Technology

[0002] In steel frame structures, there are two connection forms for the connection nodes between H-beams and secondary beams: hinged connection and rigid connection. When the support end needs to have the ability to transmit bending moment, the rigid connection method is required. The rigid connection between H-beams and secondary beams is used to improve the overall stiffness, bending load capacity, welding strength and connection stability of the steel structure, while simplifying the node construction and construction, and ensuring the safety and stability of the structure.

[0003] In existing technologies, when the main beam and secondary beam are rigidly connected, the reinforcing ribs are welded to the web of the main beam, and the upper flange of the secondary beam is welded to the upper flange of the main beam, and the lower flange of the secondary beam is welded to the web of the main beam. This is basically a full welding process, which requires multiple welding operations at different locations, requiring more construction time and effort. In the full welding process, multiple welding operations may cause the accumulation of welding heat, leading to local stress concentration and increasing the thermal deformation of the structure. In addition, the quality of the welded connection needs to be inspected by specialized equipment and techniques such as non-destructive testing, making the construction operation relatively complex. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a rigid connection structure for H-beam primary and secondary beams, solving the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rigid connection structure for a main and secondary beam of H-beams, comprising a main beam and a secondary beam. The main beam includes a first upper flange plate, a first lower flange plate, and a first web plate. The top of the first web plate is connected to the first upper flange plate, and the bottom is connected to the first lower flange plate. The secondary beam includes a second upper flange plate, a second lower flange plate, and a second web plate. The top of the second web plate is connected to the second upper flange plate, and the bottom is connected to the second lower flange plate. A rigid mechanism is provided between the middle of the main beam and the secondary beam, and the rigid mechanism is used to eliminate local stress concentration and reduce the thermal deformation of the structure. A connecting mechanism is provided between the top of the main beam and the secondary beam, and the connecting mechanism is used to resist negative bending moments.

[0008] Preferably, the rigid mechanism includes stiffening ribs, and the surfaces of both stiffening ribs are fitted with reinforcing plates, the top of which is fixedly connected to a limiting plate by a second high-strength bolt.

[0009] Preferably, the reinforcing support plate is welded to the surface of the main beam using a single-sided V-groove weld, and the bottom of the secondary beam is fixedly connected to the top of the reinforcing support plate by a third high-strength bolt.

[0010] Preferably, the reinforcing support plate has an insertion hole inside that matches the stiffening rib, and the stiffening rib has a pre-reserved flat groove that fits into the reinforcing support plate.

[0011] Preferably, the reinforcing support plate has an insertion hole inside that matches the stiffening rib, and the stiffening rib has a pre-reserved flat groove that fits into the reinforcing support plate.

[0012] Preferably, the limiting plate is used to tightly clamp the reinforcing support plate onto the surface of the stiffening rib and to partially block the through hole.

[0013] Preferably, each of the two secondary beams has a clearance groove adapted to the limiting plate on one of its opposite sides.

[0014] Preferably, the connecting mechanism includes a connecting plate, and the connecting plate connects the first upper flange plate of the main beam to the second upper flange plate of the secondary beam by a fourth high-strength bolt.

[0015] Preferably, both sides of the inner side of the connecting plate are slidably connected to sliding plates, and both sliding plates are fixedly connected to sliding frames on the side of the outer side of the connecting plate. The top of the sliding plate is fixedly connected to the second upper flange plate of the secondary beam by a fifth high-strength bolt.

[0016] Preferably, baffles are slidably provided on both sides inside the sliding frame, and L-shaped clamping plates are fixedly provided on the opposite sides of the two baffles. One side of the L-shaped clamping plate passes through the sliding frame and extends to the outside of the sliding frame. The L-shaped clamping plate is engaged with the second upper flange plate of the secondary beam. A buffer spring is fixedly provided between the baffle and the inner wall of the sliding frame.

[0017] (III) Beneficial Effects

[0018] This invention provides a rigid connection structure for H-beam primary and secondary beams. It has the following advantages:

[0019] (1) The rigid connection of the main and secondary beams of the H-beams means that multiple welding is not required between the main beam and the secondary beam, which reduces construction time and effort, and also avoids the problem of local stress concentration caused by the accumulation of welding heat in multiple welding positions, thus reducing the thermal deformation of the structure.

[0020] (2) The rigid connection node of the H-beam main and secondary beams connects the second upper flange plate of the two secondary beams and the first upper flange plate of the main beam through the connection mechanism. The two secondary beams can resist the negative bending moment at the support, forming a rigid node that can effectively transmit bending moment. When the size of the secondary beam is large, the sliding plate is pulled out from the inside of the connecting plate, and the first upper flange plate of the secondary beam is locked with the L-shaped clamping plate. Then, the fifth high-strength bolt is used for fixing, which makes the stability of the bending moment transmission higher and less prone to shaking. It is suitable for situations where the frame floor load is large or the secondary beam span is large, and can effectively reduce the height of the secondary beam web. Attached Figure Description

[0021] Figure 1 This is a perspective view of the structure of the present invention;

[0022] Figure 2 This is a front view of the structure of the present invention;

[0023] Figure 3 This is a structural schematic diagram of the reinforcing plate, stiffening ribs, and limiting plate of the present invention;

[0024] Figure 4 This is a bottom view of the reinforcing plate and stiffening rib structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection mechanism of the present invention.

[0026] In the diagram: 1. Main beam; 2. Secondary beam; 3. Rigid mechanism; 31. Stiffening rib; 32. Reinforcing support plate; 33. Second high-strength bolt; 34. Limiting plate; 35. Through hole; 36. First high-strength bolt; 37. Third high-strength bolt; 4. Clearance groove; 5. Single-sided V-shaped weld notch; 6. Connecting mechanism; 61. Connecting plate; 62. L-shaped clamping plate; 63. Sliding plate; 64. Sliding frame; 65. Baffle; 66. Fifth high-strength bolt; 67. Buffer spring; 68. Fourth high-strength bolt. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] Please see Figures 1 to 4As shown, this invention provides a rigid connection structure for a main and secondary beam of H-beams, including a main beam 1 and a secondary beam 2. The main beam 1 includes a first upper flange plate, a first lower flange plate, and a first web plate. The top of the first web plate is connected to the first upper flange plate, and the bottom is connected to the first lower flange plate. The secondary beam 2 includes a second upper flange plate, a second lower flange plate, and a second web plate. The top of the second web plate is connected to the second upper flange plate, and the bottom is connected to the second lower flange plate. A rigid mechanism 3 is provided between the middle of the main beam 1 and the secondary beam 2. The rigid mechanism 3 is used to eliminate local stress concentration and reduce the thermal deformation of the structure. The rigid mechanism 3 includes stiffening ribs 31, and each of the two stiffening ribs 31 is fitted with a reinforcing support plate 32. The stiffening ribs 31 are strip-shaped reinforcing members set at supports or locations with concentrated loads to ensure the local stability of the component and transmit concentrated forces, which can improve the stability and torsional performance of the beam. The top of the support plate 32 is fixedly connected to the limiting plate 34 by the second high-strength bolt 33. The stiffening rib 31 is welded to the surface of the main beam 1 by fillet weld. The stiffening rib 31 is fixedly connected to the second web of the secondary beam 2 by the first high-strength bolt 36. The reinforcing support plate 32 is welded to the first web of the main beam 1 by a single-sided V-groove weld. The stiffening rib 31 has a single-sided V-groove weld notch 5. The second lower flange of the secondary beam 2 is fixedly connected to the top of the reinforcing support plate 32 by the third high-strength bolt 37. The reinforcing support plate 32 has an insertion hole 35 that matches the stiffening rib 31. The stiffening rib 31 has a pre-reserved flat groove that matches the reinforcing support plate 32. The limiting plate 34 is used to tightly clamp the reinforcing support plate 32 onto the surface of the stiffening rib 31 and to partially block the insertion hole 35. The two secondary beams 2 have a clearance groove 4 that matches the limiting plate 34 on opposite sides.

[0030] First, the insertion hole 35 on the reinforcing support plate 32 is fitted onto the outside of the stiffening rib 31 and located inside the V-shaped opening. Then, the two stiffening ribs 31 are welded to the two sides of the first web plate on the main beam 1 using double-sided welding. The reinforcing support plate 32 is inserted into the flat groove on the stiffening rib 31. The limiting plate 34 is fixed to the reinforcing support plate 32 by the second high-strength bolt 33. The limiting plate 34 abuts against the stiffening rib 31 and at the same time, the limiting plate 34 partially blocks the insertion hole 35, so that the reinforcing support plate 32 is tightly clamped onto the stiffening rib 31. Then, the second web plates of the two secondary beams 2 are fixed to the two stiffening ribs 31 by the first high-strength bolt 36. The second lower flange plate of the secondary beam 2 is fixed to the reinforcing support plate 32 by the third high-strength bolt 37.

[0031] Example 2

[0032] Based on Example 1, please refer to Figure 1 , Figure 2 as well as Figure 5As shown, a connecting mechanism 6 is provided between the top of the main beam 1 and the secondary beam 2, and the connecting mechanism 6 is used to resist negative bending moment. The connecting mechanism 6 includes a connecting plate 61, and the connecting plate 61 connects the first upper flange plate of the main beam 1 and the second upper flange plate of the secondary beam 2 together by a fourth high-strength bolt 68. Sliding plates 63 are slidably connected to both sides inside the connecting plate 61, and sliding frames 64 are fixedly connected to the side of the two sliding plates 63 located outside the connecting plate 61. The top of the sliding plate 63 is connected by a fourth high-strength bolt 68. Five high-strength bolts 66 are fixedly connected to the second upper flange plate of the secondary beam 2. Baffles 65 are slidably provided on both sides inside the sliding frame 64, and L-shaped clamping plates 62 are fixedly provided on the opposite sides of the two baffles 65. One side of the L-shaped clamping plate 62 passes through the sliding frame 64 and extends to the outside of the sliding frame 64. The L-shaped clamping plate 62 is engaged at the second upper flange plate of the secondary beam 2. A buffer spring 67 is fixedly provided between the baffles 65 and the inner wall of the sliding frame 64. The high-strength bolts are made of high-strength steel.

[0033] The connecting plate 61 is placed on the first upper flange plate of the main beam 1 and the second upper flange plate of the secondary beam 2, and fixed with the fourth high-strength bolt 68. Then, the sliding plate 63 is slid out from the inside of the connecting plate 61, the sliding frame 64 moves synchronously, and the L-shaped clamping plate 62 is clamped on the second upper flange plate of the secondary beam 2 by the elastic force of the buffer spring 67. Then, the fifth high-strength bolt 66 is used to fix the sliding plate 63.

[0034] Example 3

[0035] Please see Figures 1 to 5 This embodiment is obtained by combining Embodiment 1 and Embodiment 2.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A H-shaped steel beam and girder rigid joint structure, comprising a main beam (1) and a secondary beam (2), the main beam (1) comprising a first upper flange plate, a first lower flange plate and a first web plate, the top of the first web plate being connected with the first upper flange plate and the bottom being connected with the first lower flange plate, the secondary beam (2) comprising a second upper flange plate, a second lower flange plate and a second web plate, the top of the second web plate being connected with the second upper flange plate and the bottom being connected with the second lower flange plate, characterized in that: The rigid mechanism (3) is arranged between the middle portions of the main beam (1) and the secondary beam (2), and is used for eliminating local stress concentration and reducing thermal deformation of the structure; the connecting mechanism (6) is arranged between the top portions of the main beam (1) and the secondary beam (2), and is used for resisting negative bending moment; The connecting mechanism (6) comprises a connecting plate (61), and the first upper flange plate of the main beam (1) and the second upper flange plate of the secondary beam (2) are connected together by the fourth high-strength bolt (68); Both sides of the connecting plate (61) are slidably connected with sliding plates (63), and the two sliding plates (63) are fixedly connected with sliding frames (64) on one side of the outer portion of the connecting plate (61); the top portion of the sliding plate (63) is fixedly connected with the second upper flange plate of the secondary beam (2) through the fifth high-strength bolt (66); Both sides of the inner portion of the sliding frame (64) are slidably provided with baffle plates (65), and the sides, away from each other, of the two baffle plates (65) are fixedly provided with L-shaped clamping plates (62); one side of the L-shaped clamping plate (62) penetrates through the sliding frame (64) and extends to the outer portion of the sliding frame (64); the L-shaped clamping plate (62) is clamped at the second upper flange plate of the secondary beam (2); the baffle plate (65) and the inner wall of the sliding frame (64) are fixedly provided with buffer springs (67); The rigid mechanism (3) comprises stiffening ribs (31), and the surfaces of the two stiffening ribs (31) are sleeved with reinforcing supporting plates (32); the top portion of the reinforcing supporting plate (32) is fixedly connected with a limiting plate (34) through the second high-strength bolt (33); The stiffening rib (31) is welded with the surface of the main beam (1) through a fillet weld; the stiffening rib (31) is fixedly connected with the second web plate of the secondary beam (2) through the first high-strength bolt (36); The reinforcing supporting plate (32) is welded with the first web plate of the main beam (1) through a single-side V-shaped groove weld; the second lower flange plate of the secondary beam (2) is fixedly connected with the top portion of the reinforcing supporting plate (32) through the third high-strength bolt (37); The inside of the reinforcing supporting plate (32) is provided with a penetrating hole (35) matched with the stiffening rib (31); the stiffening rib (31) is provided with a flat slot matched with the reinforcing supporting plate (32) for clamping; The limiting plate (34) is used for tightly clamping the reinforcing supporting plate (32) on the surface of the stiffening rib (31) and shielding part of the hole of the penetrating hole (35).

2. The H-shaped steel beam-sub-beam rigid joint structure according to claim 1, characterized in that: The opposite sides of the two secondary beams (2) are provided with avoiding grooves (4) matched with the limiting plate (34).

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