An assembled prestressed fixed steel beam for bridge

Abstract

The utility model relates to the prefabricated beam construction field discloses a kind of assembled prestressed fixed steel crossbeam of pre-tensioning method for bridge, including inverted U-shaped frame body and side plate;The top and bottom of the inner vertical wall of inverted U-shaped frame body are all provided with embedding slot, embedding slot is provided with inner lining plate, and the upper and lower sides of inner lining plate and the inner top wall and inner bottom wall of inverted U-shaped frame body are all provided with multiple assembly components, and the leftmost and rightmost ends of the inner vertical wall of inverted U-shaped frame body and the back of side plate are all provided with multiple positioning components.The utility model inserts two inner lining plates into embedding slot being provided on inverted U-shaped frame body, inserts sealing plate between inner lining plate and inverted U-shaped frame body, and the cross insertion block provided is inserted into cross slot on inverted U-shaped frame body, can be quickly positioned to the internal structure of fixed steel crossbeam, and multiple reinforcing plates are pushed into the upper and lower two side positioning frames one by one, multiple reinforcing plates can be accurately positioned, so as to facilitate the assembly welding of fixed steel crossbeam, prevent component from producing deviation.

Description

Technical Field

[0001] This utility model relates to the field of precast beam construction technology, specifically to a precast prestressed fixed steel crossbeam for bridges. Background Technology

[0002] Steel beams are steel bending members that are arranged horizontally or inclined in steel structures or steel-concrete composite structures. They mainly bear lateral loads (such as gravity, wind load, seismic force, etc.) and transfer them to vertical supporting members (such as columns, walls, piers, etc.). Steel beams are usually used for lateral support of bridge decks, connection of main beams and load sharing. Their structural performance directly affects the overall stability and durability of bridges.

[0003] To improve the structural performance of bridges, prestressed design was introduced into the project. Prestressed steel beams can effectively reduce deformation and improve load-bearing capacity and structural stability. A search revealed Chinese patent CN205637614U, which discloses a pre-tensioned prestressed fixed steel beam, including a box body. The box body is a rectangular box body with an insertion channel that perpendicularly penetrates two symmetrical planes of the box body. The box body also has a connecting plate for strengthening the fixed steel beam. The connecting plate is fixed to the inner wall of the box body. This fixed steel beam is used when using a newly designed pre-tensioned precast beam platform. The newly designed fixed steel beam must have high strength and stiffness, and be not easily deformed. It also has a significant improvement in tensioning capacity.

[0004] Currently, steel beams are often installed in engineering projects by on-site welding. However, existing welding installations rely on manual operation, which is prone to deviation and errors during the welding process. This results in uneven stress on the fixed steel beams when under tension, making it difficult to meet the requirements of high-quality and high-efficiency construction. Based on this, a prefabricated prestressed fixed steel beam for bridges is proposed to solve the above problems. Utility Model Content

[0005] Based on the above description, this utility model provides a prefabricated prestressed fixed steel crossbeam for bridges, which solves the problem that the current engineering projects often use on-site welding to install steel crossbeams. However, existing welding installations rely on manual operation, and deviations are prone to occur during the welding process, resulting in uneven stress on the fixed steel crossbeam when under tension, thus making it difficult to meet the requirements of high-quality and high-efficiency construction.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a pre-tensioned prestressed fixed steel crossbeam for bridges, including an inverted U-shaped frame and side plates; The top and bottom of the inner wall of the inverted U-shaped frame are provided with embedding grooves, and an inner lining plate is provided in the embedding grooves. Multiple assembly components are provided on the upper and lower sides of the inner lining plate, as well as on the top and bottom walls of the inverted U-shaped frame. Multiple positioning components are provided on the left and right ends of the inner wall and the back of the side plate of the inverted U-shaped frame. The side plate has two mounting holes that are adapted to the size of the inner lining plate; Guide tubes are provided at both ends of the two inner lining plates on opposite sides; The assembly components include positioning frames riveted to the upper and lower sides of the inner lining plate and the top and bottom walls of the inverted U-shaped frame, a sliding groove opened on the opposite side of the upper and lower positioning frames, the same reinforcing plate set between the upper and lower positioning frames, and a limiting member set on the opposite side of the left and right side walls of the sliding groove cavity.

[0007] The above technical solution allows for rapid positioning of the internal structure of the fixed steel beam. Multiple reinforcing plates are pushed into the positioning frames on the upper and lower sides, enabling precise positioning of the reinforcing plates. This facilitates the assembly and welding of the fixed steel beam, prevents component displacement, and ensures that the fixed steel beam does not deform under tension.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the left and right ends of the front side plate are provided with insertion holes that are adapted to the outer diameter of the guide tube. The distance between the two ends of the guide tube is greater than the width of the inverted U-shaped frame. The two ends of the guide tube pass through the insertion holes and the inverted U-shaped frame, respectively.

[0010] With the above technical solution, the guide tube is a straight channel used for threading prestressed steel strands.

[0011] Furthermore, the positioning frame has a U-shaped cross-section, and multiple positioning frames are equidistantly distributed; the size of the inner cavity of the slide groove is equal to the width of the reinforcing plate.

[0012] The above technical solution allows multiple equally spaced positioning frames to ensure the uniform distribution of multiple reinforcing plates, thus guaranteeing the structural stability of the fixed steel beam.

[0013] Furthermore, the limiting component includes a limiting block fixed between opposite sides of the left and right side walls of the inner cavity of the slide groove, and limiting grooves opened at the top and bottom of the left and right sides of the reinforcing plate.

[0014] The above technical solution allows the limiting block and limiting groove to limit the position of the reinforcing plate in the vertical direction.

[0015] Furthermore, the width of the limiting groove is equal to the width of the reinforcing plate, and the size of the limiting block is adapted to the size of the limiting groove.

[0016] The above technical solution can increase the contact area between the reinforcing plate and the positioning frame.

[0017] Furthermore, the positioning component includes multiple cross grooves formed on the left and right ends of the front wall and the back of the side plate of the inverted U-shaped frame, multiple sealing plates, and multiple cross inserts fixed to the top and bottom of the front and rear sides of the sealing plates.

[0018] The above technical solution allows for the rapid positioning of the internal structure of the fixed steel beam by inserting the cross-shaped insert into the cross groove on the inverted U-shaped frame.

[0019] Furthermore, each of the multiple cross grooves corresponds one-to-one with a multiple cross insert, and the length of the sealing plate in the vertical direction is equal to the distance between the two inner lining plates and the inner wall of the inverted U-shaped frame.

[0020] By using the above technical solution, the two sides of the inverted U-shaped frame are sealed with a sealing plate, which can ensure that the internal environment of the fixed steel beam is dry.

[0021] Furthermore, quick-installation components are provided on the opposite sides of the sealing plates on both the left and right sides; The quick-installation assembly includes four lifting lugs located on opposite sides of the left and right sealing plates, abutment grooves located at the top and bottom of opposite sides of the left and right lifting lugs, and a locking component; the dimensions of the inner cavity of the abutment groove are adapted to the length of the inner lining plate in the vertical direction.

[0022] With the above technical solution, the clamping groove is secured to the sides of the two inner lining plates, so that the four lifting lugs are evenly distributed on the left and right sides of the inverted U-shaped frame, ensuring that the fixed rigid beam is in a horizontal state when lifted, and preventing a large tilt.

[0023] Furthermore, the locking component includes locking slots formed at the top and bottom of opposite sides of the left and right lifting lugs, and two locking rods fixed to opposite sides of the top and bottom sealing plates.

[0024] The above technical solution allows for quick positioning of the four lifting lugs by aligning the slots at the top and bottom of the lugs with the locking rods on the sealing plate and pushing them in, which facilitates subsequent welding by the workers.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. Insert two inner lining plates into the embedded grooves on the inverted U-shaped frame, insert a sealing plate between the inner lining plates and the inverted U-shaped frame, and insert the cross-shaped insert into the cross groove on the inverted U-shaped frame. This allows for quick positioning of the internal structure of the fixed steel beam. Push multiple reinforcing plates one by one into the positioning frames on the upper and lower sides to accurately position multiple reinforcing plates, which facilitates the assembly and welding of the fixed steel beam, prevents the components from shifting, and ensures that the fixed steel beam will not deform under tension. 2. The slots and rods are designed so that when assembling the lifting lugs, the slots at the upper and lower ends of the lifting lugs can be aligned with the rods on the sealing plate and pushed in. This allows for quick positioning of the four lifting lugs, and the slots are secured to the sides of the two inner lining plates. This ensures that the four lifting lugs are evenly distributed on the left and right sides of the inverted U-shaped frame, ensuring that the fixed rigid beam is in a horizontal state when lifted, preventing significant tilting, and facilitating subsequent welding by workers. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of a pre-tensioned prestressed fixed steel crossbeam for bridges, provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the assembly components in an embodiment of the present utility model; Figure 3 This is a front view schematic diagram of the side plate structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the cross-shaped insert block structure according to an embodiment of the present utility model; Figure 5 This is a side view schematic diagram of the structure of an embodiment of the present utility model; Figure 6 This is a structural schematic diagram of the quick-assembly component according to an embodiment of the present invention.

[0027] Reference numerals: 1. Inverted U-shaped frame; 2. Embedded groove; 3. Inner lining plate; 4. Assembly components; 41. Positioning bracket; 42. Slide rail; 43. Reinforcing plate; 44. Limiting block; 45. Limiting groove; 5. Side panels; 6. Positioning assembly; 61. Cross groove; 62. Sealing plate; 63. Cross insert block; 7. Guide tube; 8. Quick-installation component; 81. Lifting lug; 82. Clamping groove; 83. Slot; 84. Locking rod. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0030] Example: Reference Figure 1 The system includes an inverted U-shaped frame 1 and a side plate 5. The top and bottom of the inner wall of the inverted U-shaped frame 1 are provided with an embedding groove 2. An inner lining plate 3 is provided in the embedding groove 2. Multiple assembly components 4 are provided on the upper and lower sides of the inner lining plate 3, as well as on the top and bottom walls of the inverted U-shaped frame 1. Multiple positioning components 6 are provided on the left and right ends of the inner wall of the inverted U-shaped frame 1 and the back of the side plate 5. Two mounting holes that are adapted to the size of the inner lining plate 3 are provided on the side plate 5. Guide tubes 7 are provided on the left and right ends between the two inner lining plates 3 on opposite sides.

[0031] The side panel 5 has insertion holes on both the left and right sides that are compatible with the outer diameter of the guide tube 7. The distance between the two ends of the guide tube 7 is greater than the width of the inverted U-shaped frame 1. The two ends of the guide tube 7 pass through the insertion holes and the inverted U-shaped frame 1, respectively.

[0032] When in use, insert one end of the guide tube 7 into the mounting hole opened on the side plate 5 until the other end of the guide tube 7 extends out of the inverted U-shaped frame 1 and weld it. After welding, splice the side plate 5 with the inverted U-shaped frame 1. At this time, the two guide tubes 7 need to be inserted into the opposite side of the two inner lining plates 3 respectively. The embedding groove 2 opened on the back of the side plate 5 is stuck on the side of the inner lining plate 3.

[0033] refer to Figure 2 The assembly component 4 includes positioning frames 41 riveted to the upper and lower sides of the inner lining plate 3 and the inner top and bottom walls of the inverted U-shaped frame 1, a slide groove 42 opened on the opposite side of the upper and lower positioning frames 41, the same reinforcing plate 43 set between the upper and lower positioning frames 41, and limiting members set on the opposite side of the left and right side walls of the inner cavity of the slide groove 42. The multiple reinforcing plates 43 are precisely positioned to facilitate the assembly and welding of the fixed steel beam, prevent the components from shifting during the welding process, and ensure that the fixed steel beam will not deform when under tension.

[0034] The positioning frame 41 has a U-shaped cross-section, and multiple positioning frames 41 are equidistantly distributed; the inner cavity of the slide groove 42 has the same dimensions as the width of the reinforcing plate 43.

[0035] In use, multiple positioning brackets 41 are riveted to the top and bottom walls of the inverted U-shaped frame 1 and the upper and lower sides of the two inner lining plates 3 respectively. Then, the two inner lining plates 3 are inserted into the embedded grooves 2 opened on the inverted U-shaped frame 1.

[0036] In addition, the limiting components include limiting blocks 44 fixed between opposite sides of the left and right side walls of the inner cavity of the slide groove 42, and limiting grooves 45 opened on the top and bottom of the left and right sides of the reinforcing plate 43.

[0037] It should be noted that the width of the limiting groove 45 is equal to the width of the reinforcing plate 43, and the size of the limiting block 44 is adapted to the size of the limiting groove 45. The limiting block 44 and the limiting groove 45 can position the vertical position of the reinforcing plate 43 and prevent it from moving up and down.

[0038] refer to Figure 3 and Figure 4 The positioning component 6 includes multiple cross grooves 61 formed on the inner wall of the inverted U-shaped frame 1 and the left and right ends of the back of the side plate 5, multiple sealing plates 62, and multiple cross inserts 63 fixed to the top and bottom of the front and rear sides of the sealing plates 62.

[0039] Among them, multiple cross grooves 61 correspond one-to-one with multiple cross inserts 63. The length of the sealing plate 62 in the vertical direction is equal to the distance between the two inner lining plates 3 and the inner wall of the inverted U-shaped frame 1. The cross grooves 61 and cross inserts 63 can quickly and accurately position the sealing plate 62 and the side plate 5.

[0040] In use, a sealing plate 62 is inserted between the inner lining plate 3 and the inverted U-shaped frame 1, ensuring that the cross-shaped insert 63 on one side of the sealing plate 62 is inserted into the cross-shaped groove 61 on the inverted U-shaped frame 1, thereby providing support for the inner lining plate 3. Then, multiple reinforcing plates 43 are pushed into the upper and lower positioning frames 41 one by one, which can be used to improve the internal structural stability of the fixed steel beam. The multiple cross-shaped grooves 61 on the back of the side plate 5 are aligned with the multiple cross-shaped inserts 63 on the front of the sealing plate 62, and then the side plate 5 is pushed towards the side closer to the inverted U-shaped frame 1. At this time, the back of the side plate 5 is in contact with the reinforcing plate 43, and then the side plate 5 is welded to the inverted U-shaped frame 1.

[0041] refer to Figure 5 and Figure 6 Each of the left and right sealing plates 62 is provided with a quick-installation assembly 8 on the opposite side. The quick-installation assembly 8 includes four lifting lugs 81 provided on the opposite side of the left and right sealing plates 62, abutting grooves 82 opened on the top and bottom of the opposite side of the left and right lifting lugs 81, and a locking member. The size of the inner cavity of the abutting groove 82 is adapted to the length of the inner liner 3 in the vertical direction.

[0042] The locking component includes locking slots 83 on the top and bottom of opposite sides of the left and right lifting lugs 81, and two locking rods 84 fixed on opposite sides of the top and bottom sealing plates 62.

[0043] In use, the four lifting lugs 81 with slots 83 facing the sealing plate 62 are aligned with the upper and lower slots 83 and pushed in. When the lifting lugs 81 move, the two clamping grooves 82 on them will be locked on the sides of the two inner lining plates 3. Then the lifting lugs 81 are welded. After welding, heat treatment is performed, and the surface of the fixed steel beam is coated with anti-rust paint to protect the service life of the fixed steel beam.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated prestressed steel crossbeam for bridges, comprising an inverted U-shaped frame (1) and side plates (5); Its features are, The top and bottom of the inner wall of the inverted U-shaped frame (1) are provided with an embedding groove (2), and an inner lining plate (3) is provided in the embedding groove (2). Multiple assembly components (4) are provided on the upper and lower sides of the inner lining plate (3) and the top and bottom walls of the inverted U-shaped frame (1). Multiple positioning components (6) are provided on the left and right ends of the inner wall of the inverted U-shaped frame (1) and the back of the side plate (5). The side plate (5) has two mounting holes that are adapted to the size of the inner lining plate (3); Guide tubes (7) are provided at both ends of the two inner lining plates (3) on opposite sides; The assembly component (4) includes positioning frames (41) riveted to the upper and lower sides of the inner lining plate (3) and the inner top and bottom walls of the inverted U-shaped frame (1), a slide groove (42) opened on the opposite side of the upper and lower positioning frames (41), the same reinforcing plate (43) set between the upper and lower positioning frames (41), and a limiting member set on the opposite side of the left and right side walls of the inner cavity of the slide groove (42).

2. The prefabricated prestressed steel crossbeam for bridges according to claim 1, characterized in that, The side plate (5) has insertion holes on both the left and right sides of its front side that are adapted to the outer diameter of the guide tube (7). The distance between the two ends of the guide tube (7) is greater than the width of the inverted U-shaped frame (1). The two ends of the guide tube (7) pass through the insertion holes and the inverted U-shaped frame (1) respectively.

3. The prefabricated prestressed steel crossbeam for bridges according to claim 1, characterized in that, The positioning frame (41) has a U-shaped cross-section, and multiple positioning frames (41) are distributed at equal intervals; the inner cavity of the slide groove (42) is equal to the width of the reinforcing plate (43).

4. The prefabricated prestressed steel crossbeam for bridges according to claim 1, characterized in that, The limiting components include limiting blocks (44) fixed between opposite sides of the left and right side walls of the inner cavity of the slide groove (42), and limiting grooves (45) opened on the top and bottom of the left and right sides of the reinforcing plate (43).

5. The prefabricated prestressed steel crossbeam for bridges according to claim 4, characterized in that, The width of the limiting groove (45) is equal to the width of the reinforcing plate (43), and the size of the limiting block (44) is adapted to the size of the limiting groove (45).

6. The prefabricated prestressed steel crossbeam for bridges according to claim 1, characterized in that, The positioning component (6) includes multiple cross grooves (61) formed on the inner wall of the inverted U-shaped frame (1) and the left and right ends of the back of the side plate (5), multiple sealing plates (62), and multiple cross inserts (63) fixed on the top and bottom of the front and rear sides of the sealing plates (62).

7. The prefabricated prestressed steel crossbeam for bridges according to claim 6, characterized in that, The multiple cross grooves (61) correspond one-to-one with the multiple cross inserts (63), and the length of the sealing plate (62) in the vertical direction is equal to the distance between the two inner lining plates (3) and the inner wall of the inner lining plate (3) and the inverted U-shaped frame (1).

8. The prefabricated prestressed steel crossbeam for bridges according to claim 7, characterized in that, Quick-installation components (8) are provided on the opposite sides of the sealing plates (62) on both the left and right sides; The quick-installation assembly (8) includes four lugs (81) on opposite sides of the left and right sealing plates (62), abutment grooves (82) on the top and bottom of opposite sides of the left and right lugs (81), and a locking element; the size of the inner cavity of the abutment groove (82) is adapted to the length of the inner liner plate (3) in the vertical direction.

9. The prefabricated prestressed steel crossbeam for bridges according to claim 8, characterized in that, The locking component includes a locking groove (83) opened on the top and bottom of the opposite side of the left and right lifting lugs (81), and two locking rods (84) fixed on the opposite side of the top and bottom sealing plates (62).

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