Wet joint structure of perforation-free suspended formwork steel-concrete composite beam

Abstract

The utility model relates to the technical field of building construction, and discloses a wet joint structure of a non-perforated suspended formwork steel-concrete composite beam, which comprises a steel-concrete beam body, the front side and the rear side of the steel-concrete beam body are fixedly connected with a plurality of embedded plates, the outward side of each embedded plate is fixedly connected with a positioning block, the inner wall of each positioning block is slidably connected with a limiting block, and the limiting blocks are fixedly connected with the embedded plates. And a plurality of reinforcing blocks are fixedly connected to the outward sides of the limiting blocks, a plurality of second fixing screws are connected to the inner walls of the reinforcing blocks in a threaded mode, fixing blocks are fixedly connected between the adjacent reinforcing blocks, and a hanging mold is fixedly connected to the bottoms of the limiting blocks. According to the utility model, the embedded plates and the positioning blocks are embedded in the front side and the rear side of the reinforced concrete beam body, and the limiting blocks are fixed at the top of the hanging die, so that when the hanging die is mounted, the limiting blocks are firstly inserted into the positioning blocks, the purpose of quickly mounting the high-strength hanging die without punching is achieved, the safety is improved, and the personal safety of constructors is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a wet joint structure of a steel-concrete composite beam without a perforated hanging formwork. Background Art

[0002] A steel-concrete composite beam is a beam structure that combines steel and concrete. It combines the advantages of both materials and is widely used in modern construction and bridge engineering. The steel beam provides it with good bending resistance, while the concrete bridge deck provides it with high compressive strength and durability. The steel beam can be prefabricated in the factory and then transported to the construction site for installation. The concrete bridge deck can also be prefabricated in the factory, reducing on-site construction time. The connection method mostly used between the steel beam and the concrete bridge deck is wet joint.

[0003] A wet joint is a pre-defined joint between the steel beam and the concrete bridge deck, connected by pouring concrete on-site. This connection method is suitable for precast steel beams and cast-in-place concrete bridge decks. Wet joints are designed in V- and U-shaped shapes to increase the bond area between the concrete and the steel beam, improving the strength of the connection. The concrete strength at the wet joint is higher than the overall concrete strength of the bridge deck, ensuring the strength and durability of the joint. Therefore, wet joints in steel-concrete composite beams are an important connection method, crucial for ensuring the overall performance and durability of the structure. Multiple factors must be considered during the design and construction process to ensure the quality of the joint and the reliability of the structure.

[0004] After searching, Chinese patent publication number: CN210341621U discloses a wet joint structure for prefabricated steel and concrete composite beams, belonging to the field of bridge engineering technology. The wet joint structure includes at least two prefabricated beams and a hanging formwork; a first long steel plate is embedded in the flange end of the prefabricated beam, and a U-shaped steel bar is embedded in the middle of the flange of the prefabricated beam; the hanging formwork includes a second long steel plate and two hooked steel bars with one end being hooked; the hook end of the hook steel bar is connected to the first long steel plate, and the other end is connected to the second long steel plate. The wet joint structure is simple and reasonable in design. When the hanging formwork is hoisted, it is only necessary to hook the hook steel bar in the hanging formwork to the first long steel plate embedded in the flange of the prefabricated beam. The construction is convenient and the force is reasonable. The construction is convenient and fast, the overall force performance is good, and it has good technical and economic benefits. However, the fixing strength is low when the hanging formwork is installed on the steel-concrete composite beam, resulting in low safety and difficulty in ensuring the personal safety of construction workers. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a wet joint structure of a steel-concrete composite beam without a perforated hanging formwork, aiming to improve the problem that the fixing strength of the steel-concrete composite beam without a perforated hanging formwork in the existing technology is low when the hanging formwork is installed on the steel-concrete composite beam, resulting in low safety.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a wet joint structure of a steel-concrete composite beam without a perforated hanging formwork, comprising a steel-concrete beam body, the front and rear sides of the steel-concrete beam body are fixedly connected with a plurality of embedded plates, the outward side of the embedded plate is fixedly connected with a positioning block, the inner wall of the positioning block is slidably connected to a limiting block, the outward side of the limiting block is fixedly connected with a plurality of reinforcement blocks, the inner wall of the reinforcement block is threadedly connected with a plurality of second fixing screws, adjacent reinforcement blocks are fixedly connected with fixed blocks, the bottom of the limiting block is fixedly connected with a hanging formwork, the left and right sides of the steel-concrete beam body are fixedly connected with a plurality of joint structures, and the joint structure is used to wet-connect two beams.

[0007] Through the above technical solution: the embedded plates and positioning blocks avoid drilling during the installation of the hanging formwork, thereby speeding up the construction progress. The steel-concrete beam is used to support the entire building, and the limit blocks can be inserted into the inner wall of the positioning blocks to ensure that the hanging formwork and the steel-concrete beam are accurately docked and installed in a limited manner during the construction process.

[0008] As a further description of the above technical solution:

[0009] The joint structure includes connecting steel bars, the outer surfaces of which are fixedly connected to the inner walls of the steel-concrete beam body, a plurality of arc-shaped steel bars are arranged between adjacent connecting steel bars, the outer walls of which are fixedly connected to the inner walls of the steel-concrete beam body, a plurality of guide grooves are provided in the middle of the left and right sides of the steel-concrete beam body, the front and rear sides of the steel-concrete beam body are fixedly connected with stop blocks near the edges, and the inner walls of the stop blocks are threadedly connected with a plurality of first fixing threads.

[0010] Through the above technical solution: the connecting steel bars can be bent and inserted into the arc-shaped steel bars for welding and fixing, and the first fixing thread can fix the blocks of different sizes at the required positions, thereby determining different joint sizes according to the size and requirements of the connected steel-concrete beams.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the connecting steel bar is slidably connected to the inner wall of the arc-shaped steel bar, and the shape of the connecting steel bar is a hook shape.

[0013] Through the above technical solution, the hook-shaped connecting steel bar makes it easier to be bent and inserted into the arc-shaped steel bar.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the second fixing screw is slidably connected with a first gasket, and the multiple embedded plates are fixedly connected at the same horizontal height.

[0016] Through the above technical solution, the first gasket can prevent the second fixing screw from loosening due to long-term use.

[0017] As a further description of the above technical solution:

[0018] The bottom of the hanging formwork is fixedly connected with a plurality of supporting steel bars, and the bottom of the supporting steel bars is fixedly connected with a supporting seat.

[0019] Through the above technical solution: the support seat is used to support the hanging formwork during construction.

[0020] As a further description of the above technical solution:

[0021] The inner wall of the hanging formwork is fixedly connected with a plurality of reinforcing steel bars, and the bottom of the fixing block is fitted with the top of the positioning block.

[0022] Through the above technical solution: reinforcing steel bars can further enhance the internal bending resistance and rigidity of the hanging formwork.

[0023] As a further description of the above technical solution:

[0024] A plurality of third reinforcing screws are fixedly connected to the top of the hanging mold near the edge, and a plurality of connecting hanging plates are threadedly connected to the inner walls of the third reinforcing screws.

[0025] Through the above technical solution: the hanging plate is used to hoist the hanging formwork during construction.

[0026] As a further description of the above technical solution:

[0027] The outer wall of the third reinforcing screw is slidably connected with a second gasket, and the plurality of third reinforcing screws are fixedly connected at the same horizontal height.

[0028] Through the above technical solution, the second gasket can prevent the third reinforcing screw from loosening during long-term use.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, embedded plates and positioning blocks are pre-embedded on the front and rear sides of the steel-concrete beam body, and then a limiting block is fixed on the top of the hanging formwork. When installing the hanging formwork, the limiting block is first inserted into the positioning block, and then the fixed block and the portion of the limiting block leaking out of the top of the positioning block are offset. The reinforcement block is fixed to the corner where the fixed block and the positioning block are attached by the first gasket for reinforcement, thereby achieving the purpose of quickly installing a high-strength hanging formwork without drilling, improving safety, and ensuring the personal safety of construction workers.

[0031] 2. In the present invention, the stop blocks are fixed to the left and right sides of the steel-concrete beam body by the first fixing thread to limit the size of the joint, and then the connecting steel bars of the opposite steel-concrete beam body are bent and inserted into the arc-shaped steel bars and then welded, and then cement is filled into the joint along the guide groove, thereby achieving the purpose of improving the joint strength of the wet joint, extending the service life and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a front perspective view of a wet joint structure of a steel-concrete composite beam without perforated hanging formwork proposed in the present invention;

[0033] Figure 2 Based Figure 1 A magnified view of point A;

[0034] Figure 3 This is a side view of a wet joint structure of a steel-concrete composite beam without perforated hanging formwork proposed in the utility model;

[0035] Figure 4 for Figure 3 Enlarged view of point B;

[0036] Figure 5 This is a partial structural breakdown diagram of a wet joint structure of a steel-concrete composite beam with a non-perforated hanging formwork proposed in the utility model.

[0037] Legend:

[0038] 1. Steel-concrete beam body; 2. Joint structure; 201. Abutment block; 202. Connecting steel bar; 203. Guide groove; 204. Arc-shaped steel bar; 205. First fixing thread; 3. Hanging formwork; 4. Second fixing screw; 5. Fixing block; 6. Embedded plate; 7. Positioning block; 8. Reinforcement block; 9. Limiting block; 10. First gasket; 11. Reinforcement steel bar; 12. Support seat; 13. Support steel bar; 14. Connecting hanging plate; 15. Third reinforcing screw; 16. Second gasket. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Please see the attached Figure 1 - Attachment Figure 3 The utility model provides an embodiment of a wet joint structure of a steel-concrete composite beam without a perforated hanging formwork, comprising a steel-concrete beam body 1, wherein the front and rear sides of the steel-concrete beam body 1 are fixedly connected with a plurality of embedded plates 6. The steel-concrete beam body 1 is used to be installed in a specified position to support the entire building. The outward side of the embedded plate 6 is fixedly connected with a positioning block 7, and the inner wall of the positioning block 7 is slidably connected to the limiting block 9. The embedded plate 6 is used for its installation during the manufacture of the steel-concrete beam body 1. The outward side of the limiting block 9 is fixedly connected with a plurality of reinforcing blocks 8. The inner wall of the reinforcing block 8 is threadedly connected with a plurality of second fixing screws 4. The adjacent reinforcing blocks 8 are fixedly connected with a fixing block 5. The limiting block 9 can be inserted into the positioning block 7 for preliminary positioning. The bottom of the limiting block 9 is fixedly connected with a hanging formwork 3. The left and right sides of the steel-concrete beam body 1 are fixedly connected with a plurality of joint structures 2. The joint structure 2 is used to wet-connect two beams, and the reinforcing block 8 can connect and reinforce the fixing block 5 and the limiting block 9.

[0041] Specifically, the hanging formwork 3 can provide necessary support and positioning during construction. The limit block 9 can be inserted into the inner wall of the positioning block 7 to ensure that the hanging formwork 3 and the steel-concrete beam body 1 are accurately docked and installed in a limited position during the construction process. The second fixing screw 4 can fix the reinforcement block 8 at the corner where the reinforcement fixing block 5 and the limit block 9 are connected, thereby reinforcing and fixing. The embedded plate 6 and the positioning block 7 avoid drilling when installing the hanging formwork 3, thereby speeding up the construction progress.

[0042] Please see the attached Figure 2 and attached Figure 3 , the joint structure 2 includes a connecting steel bar 202, the outer surface of the connecting steel bar 202 is fixedly connected to the inner wall of the steel-concrete beam body 1, and a plurality of arc-shaped steel bars 204 are arranged between adjacent connecting steel bars 202. The connecting steel bar 202 is used to connect with the arc-shaped steel bar 204 to strengthen the strength of the steel-concrete beam body 1 when connected. The outer wall of the arc-shaped steel bar 204 is fixedly connected to the inner wall of the steel-concrete beam body 1. A plurality of guide grooves 203 are provided in the middle of the left and right sides of the steel-concrete beam body 1. The guide grooves 203 can increase the contact area with the cement to enhance the connection strength. The front and rear sides of the steel-concrete beam body 1 are fixedly connected with a stop block 201 near the edge. The inner wall of the stop block 201 is threaded with a plurality of first fixing threads 205. The stop block 201 can determine the size of the joint to avoid the joint being too large or too small.

[0043] Specifically, the first fixing thread 205 can fix the blocks 201 of different sizes at the required position, so as to determine different joint sizes according to the size and requirements of the connected steel-concrete beam 1. The guide groove 203 not only helps the flow of cement and increases the contact area of the cement, but also facilitates the construction workers to perform vibration treatment to reduce the air in the cement and thus enhance the strength of the connection. The connecting steel bar 202 can be bent and inserted into the arc-shaped steel bar 204 of the opposite steel-concrete beam 1 and then wrapped back around itself for welding, thereby enhancing the connection strength.

[0044] Please see the attached Figure 3 - Attachment Figure 5 , the outer wall of the second fixing screw 4 is slidably connected with the first gasket 10, and multiple embedded plates 6 are fixedly connected at the same horizontal height. The embedded plates 6 at the same horizontal height ensure stability during hoisting. The outer wall of the connecting steel bar 202 is slidably connected to the inner wall of the arc-shaped steel bar 204. The shape of the connecting steel bar 202 is a hook shape. The bottom of the hanging mold 3 is fixedly connected with multiple supporting steel bars 13. The bottom of the supporting steel bar 13 is fixedly connected with a support seat 12. The hook-shaped connecting steel bar 202 makes it easier to insert it into the arc-shaped steel bar 204 for welding;

[0045] Specifically, the supporting steel bars 13 can ensure the stability and safety of the hanging formwork 3 during the construction process, and the supporting seat 12 can further improve the stability and bearing capacity of the entire structure, ensuring the stability of the steel-concrete beam body 1 during installation.

[0046] Please see the attached Figure 1 and attached Figure 2 , the outer wall of the third reinforcing screw 15 is slidably connected with a second gasket 16, and multiple third reinforcing screws 15 are fixedly connected at the same horizontal height. Multiple third reinforcing screws 15 at the same horizontal height ensure the level of the structure to which they are fixed. The top of the hanging formwork 3 is fixedly connected with multiple third reinforcing screws 15 near the edge, and the inner wall of the third reinforcing screw 15 is threadedly connected with multiple connecting hanging plates 14. The connecting hanging plates 14 are used to facilitate the lifting of the hanging formwork 3. The inner wall of the hanging formwork 3 is fixedly connected with multiple reinforcing steel bars 11. The bottom of the fixing block 5 fits in with the top of the positioning block 7. The reinforcing steel bars 11 can enhance the strength of the hanging formwork 3;

[0047] Specifically, the second gasket 16 can enhance the direct connection ability between the third reinforcing screw 15 and the connecting hanger plate 14, avoiding the third reinforcing screw 15 from being delivered due to long-term use, thereby causing it to fall off during lifting and causing production accidents. At the same time, it can also reduce the direct friction between the third reinforcing screw 15 and the connecting hanger plate 14 to avoid severe wear caused by long-term use. The reinforced steel bar 11 further improves the overall strength and stability of the hanging formwork 3, extending its service life and safety during use.

[0048] Working principle: During production, an embedded plate 6 is pre-embedded at the bottom of the steel-concrete beam body 1, and a positioning block 7 is welded or pre-embedded on the outward side of the embedded plate 6. A limiting block 9 is fixed on the top of the hanging formwork 3 by welding. When the hanging formwork 3 and the steel-concrete beam body 1 are installed, the limiting block 9 is inserted into the positioning block 7, and then the fixing block 5 is placed on the top of the positioning block 7. Then, the reinforcement block 8 is fixed to the outer wall of the fixing block 5 and the limiting block 9 by the second fixing screw 4, thereby fixing the fixing block 5 and the limiting block 9, and then the hanging is carried out.

[0049] When performing wet seam connection, the block 201 is first fixed to the front and rear sides of the steel-concrete beam 1 through the first fixing thread 205. The size of the gap is determined when performing wet seam connection between the steel-concrete beam 1 and the steel-concrete beam 1. Then, the connecting steel bar 202 is bent and inserted into the arc-shaped steel bar 204 on the outer wall of the opposite steel-concrete beam 1, and then welded. Then, cement is poured into it. The guide groove 203 can increase the contact area of the cement and thus enhance the connection strength.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wet joint structure of a steel-concrete composite beam without a perforated hanging formwork, comprising a steel-concrete beam body (1), characterized in that: The front and rear sides of the steel-concrete beam body (1) are fixedly connected with a plurality of embedded plates (6), the outward side of the embedded plate (6) is fixedly connected with a positioning block (7), the inner wall of the positioning block (7) is slidably connected with a limiting block (9), the outward side of the limiting block (9) is fixedly connected with a plurality of reinforcing blocks (8), the inner wall of the reinforcing block (8) is threadedly connected with a plurality of second fixing screws (4), the adjacent reinforcing blocks (8) are fixedly connected with a fixing block (5), the bottom of the limiting block (9) is fixedly connected with a hanging mold (3), and the left and right sides of the steel-concrete beam body (1) are fixedly connected with a plurality of joint structures (2), and the joint structure (2) is used to wet-connect two beams.

2. The wet joint structure of a steel-concrete composite beam without perforated formwork according to claim 1 is characterized in that: The joint structure (2) comprises connecting steel bars (202), the outer surface of the connecting steel bars (202) is fixedly connected to the inner wall of the steel-concrete beam body (1), a plurality of arc-shaped steel bars (204) are arranged between adjacent connecting steel bars (202), the outer wall of the arc-shaped steel bars (204) is fixedly connected to the inner wall of the steel-concrete beam body (1), a plurality of guide grooves (203) are provided in the middle of the left and right sides of the steel-concrete beam body (1), and abutments (201) are fixedly connected near the edges of the front and rear sides of the steel-concrete beam body (1), and the inner wall of the abutment (201) is threadedly connected to a plurality of first fixing threads (205).

3. The wet joint structure of a steel-concrete composite beam without perforated formwork according to claim 2 is characterized in that: The outer wall of the connecting steel bar (202) is slidably connected to the inner wall of the arc-shaped steel bar (204), and the shape of the connecting steel bar (202) is a hook shape.

4. The wet joint structure of a steel-concrete composite beam without perforated formwork according to claim 1 is characterized in that: The outer wall of the second fixing screw (4) is slidably connected to a first gasket (10), and the plurality of embedded plates (6) are fixedly connected at the same horizontal height.

5. The wet joint structure of a steel-concrete composite beam without perforated formwork according to claim 1 is characterized in that: The bottom of the hanging formwork (3) is fixedly connected to a plurality of supporting steel bars (13), and the bottom of the supporting steel bars (13) is fixedly connected to a supporting seat (12).

6. The wet joint structure of a steel-concrete composite beam without perforated formwork according to claim 1 is characterized in that: A plurality of reinforcing steel bars (11) are fixedly connected to the inner wall of the hanging formwork (3), and the bottom of the fixing block (5) fits in contact with the top of the positioning block (7).

7. The wet joint structure of a steel-concrete composite beam without perforated formwork according to claim 1 is characterized in that: A plurality of third reinforcing screws (15) are fixedly connected to the top of the hanging mold (3) near the edge, and a plurality of connecting hanging plates (14) are threadedly connected to the inner walls of the third reinforcing screws (15).

8. The wet joint structure of a steel-concrete composite beam without perforated formwork according to claim 7, characterized in that: The outer wall of the third reinforcing screw (15) is slidably connected to a second gasket (16), and a plurality of the third reinforcing screws (15) are fixedly connected at the same horizontal height.

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