Stiff skeleton concrete cable tower beam

Abstract

The utility model relates to bridge engineering technical field provides a kind of stiff skeleton concrete cable tower crossbeam, set between cable tower, including crossbeam and embedded part, crossbeam includes crossbeam skeleton and outer concrete layer, the both ends of crossbeam skeleton are connected embedded part, embedded part is set on the same height position of cable tower, the connecting piece for connecting formwork is set on crossbeam skeleton, and the periphery of crossbeam skeleton and the inboard of embedded part are set concrete to form outer concrete layer.The utility model optimizes the connecting structure of crossbeam and cable tower, improves overall stiffness, and does not need to erect support, shortens aerial work time, improves construction quality.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically to a rigid frame concrete cable tower crossbeam. Background Technology

[0002] Concrete pylons are a crucial component of cable-stayed bridge towers, typically serving as supports for the main girder or as transverse connecting pylons. Traditionally, pylon construction involves erecting scaffolding, setting up formwork, tying reinforcing bars, and pouring concrete at the designed locations for the transverse girder after the tower has reached a certain height. This lengthy construction process severely hinders the progress of the tower's construction. Furthermore, the traditional cast-in-place method for pylon transverse girder construction suffers from numerous problems, including high construction difficulty, low concrete quality, insufficient strength, and poor durability.

[0003] Precast assembly beams can solve the above problems. Although the State Intellectual Property Office has published a precast assembly process for concrete bridge towers with application number CN110804952A, wet joint construction is still required. Wet joint construction has many inconveniences, such as the need for steel bar lap splicing and the need to erect formwork supports.

[0004] Therefore, to address the above problems, a rigid frame concrete cable tower crossbeam is proposed. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a rigid frame concrete cable tower crossbeam. This invention optimizes the connection structure between the crossbeam and the cable tower, improves the overall rigidity, eliminates the need for scaffolding, shortens high-altitude operation time, and improves construction quality and durability.

[0006] To achieve the above objectives, this utility model employs the following technical solution: A rigid frame concrete cable tower crossbeam is installed between cable towers. It includes a crossbeam and embedded parts. The crossbeam includes a crossbeam frame and an outer concrete layer. The two ends of the crossbeam frame are connected to the embedded parts, which are set at the same height on the cable tower. The crossbeam frame is provided with connectors for connecting the formwork. The crossbeam frame and the inner side of the embedded parts are provided with concrete to form an outer concrete layer.

[0007] Preferably, the crossbeam frame includes main trusses, vertical members, diagonal members, and web members. The main trusses are provided with at least four parallel members. Both ends of the main trusses are connected to the embedded parts on both sides, and the main trusses are arranged in a rectangular shape. Several vertical members are evenly arranged between adjacent main trusses, and the length direction of the vertical members is perpendicular to the length direction of the main trusses. The diagonal members are inclined between adjacent main trusses, and the two ends of the diagonal members are respectively connected to the different ends of the adjacent vertical members. The web members are inclined between the main trusses arranged diagonally.

[0008] Preferably, the embedded parts include a box body welded from high-strength steel plates, stiffening ribs set on the inner and outer sides of the box body, and a horizontal plate set on the side of the box body away from the crossbeam frame.

[0009] Preferably, the dimensions of the inner cross section of the box body correspond to the dimensions of the outer cross section of the cross beam frame, and the surface of the cross plate is larger than the dimensions of the outer cross section of the box body.

[0010] Preferably, the connector includes bolts, nuts, and gaskets. The bolts pass through the template and are connected to the beam frame. The nuts are threaded to the bolts and are located on the outside of the template. A gasket is placed between the nut and the template to prevent concrete leakage.

[0011] Preferably, early-strength micro-expansion concrete or early-strength self-compacting concrete is used.

[0012] Preferably, a window is opened at one end of the box body near the crossbeam frame to allow for insertion into the crossbeam frame and to ensure the flow of concrete material. The stiffening ribs inside the box body can be in close contact with the concrete material.

[0013] Preferably, the main truss, vertical members, and diagonal members are all made of angle steel or I-beams, and the web members are made of round steel pipes.

[0014] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages: 1. This utility model improves the stability of the rigid frame by setting up a crossbeam skeleton, which adopts a spatial truss structure and has diagonally supported web members inside. 2. This utility model sets up embedded parts, a part of which is pre-set inside the cable tower. The embedded parts are connected to the crossbeam frame to achieve the integrity of the crossbeam. The crossbeam frame can be inserted into the box of the embedded parts and connected. The crossbeam frame and the box of the embedded parts are connected as a whole by concrete, which improves the integrity of the crossbeam and avoids wet joint construction. 3. By setting up a connector, the template can be placed on the crossbeam frame, avoiding the need to erect a support frame, thus improving construction efficiency. In addition, a sealing gasket is set up to prevent concrete leakage. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the connection structure between the crossbeam and the tower in an embodiment of this utility model; Figure 2This is a schematic diagram showing the connection between the template, the beam frame, and the embedded parts in an embodiment of this utility model. Figure 3 This is a schematic diagram of the crossbeam frame structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the connector structure according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the structure of the embedded part in an embodiment of the present utility model.

[0017] In the diagram, 1. Tower; 2. Frame beam; 3. Embedded parts; 4. Connectors; 5. Formwork; 6. Concrete; 21. Main truss; 22. Vertical members; 23. Diagonal members; 24. Web members; 31. Box frame; 32. Stiffening ribs; 33. Horizontal plates; 41. Bolts; 42. Nuts; 43. Sealing gaskets. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1-5 As shown, this utility model provides a technical solution: A rigid frame concrete cable tower crossbeam is installed between the two sides of the cable tower 1. It includes a crossbeam and embedded parts 3. The crossbeam includes a crossbeam frame 2 and an outer concrete layer. The two ends of the crossbeam frame 2 are connected to the embedded parts 3. The embedded parts 3 are set at the same height on the cable tower. The position of the embedded parts 3 is completed when the cable tower 1 is poured to improve the integration between the crossbeam and the cable tower 1. The crossbeam frame 2 is connected to the formwork 5 for pouring concrete 6 through connectors 4. Concrete 6 is poured around the crossbeam frame 2 and inside the embedded parts 3 to form an outer concrete layer. The formwork 5 is only set on the front, back and bottom sides of the crossbeam frame 2. The top has an opening for pouring concrete 6 to facilitate pouring and observation of the concrete 6.

[0020] In an optional embodiment, the crossbeam frame 2 includes main trusses 21, vertical members 22, diagonal members 23, and web members 24. The main trusses 21 have at least four parallel members. Both ends of the main trusses 21 are connected to the embedded parts 3 on both sides, which can be connected by welding or bolts 41. The cross-section of the main trusses 21 is rectangular. Several vertical members 22 are evenly arranged between adjacent main trusses 21, and the length direction of the vertical members 22 is perpendicular to the length direction of the main trusses 21. The diagonal members 23 are inclined between adjacent main trusses 21, and the two ends of the diagonal members 23 are respectively connected to different ends of adjacent vertical members 22. The web members 24 are inclined between the main trusses 21 arranged diagonally. All of the above connections are preferably welded. The entire crossbeam frame 2 can be connected on the ground and then lifted to the height of the embedded parts 3 by hoisting equipment such as a crane for connection.

[0021] In an optional embodiment, the main truss 21, vertical rods 22 and diagonal rods 23 are all made of angle steel or I-beams and other steel profiles. The selection of steel profiles is based on meeting the strength requirements of the support. The web members 24 are made of round steel pipes to enhance the stiffness of the beam frame 2 and improve the support strength and durability of the beam.

[0022] In an optional embodiment, the embedded part 3 includes a box body 31 welded from high-strength steel plates, stiffening ribs 32 disposed on the inner and outer sides of the box body 31, and a horizontal plate 33 disposed on the side of the box body 31 away from the crossbeam frame 2. A window is opened at the end of the box body 31 near the crossbeam frame 2. The inner cross section of the box body 31 corresponds to the outer cross section of the crossbeam frame 2 to facilitate the insertion of the crossbeam frame 2 and ensure the flow of concrete 6 material. The stiffening ribs 32 on the inner side of the box body 31 can be in close contact with the concrete 6 material. The surface of the horizontal plate 33 is larger than the outer cross section of the box body 31. A part of the box body 31 and the horizontal plate 33 are located inside the tower. The stiffening ribs 32 on the outer side of the box body 31 can be in close contact with the tower to improve the stability of the support.

[0023] In an optional embodiment, the connector 4 includes a bolt 41, a nut 42, and a sealing gasket 43. The bolt 41 passes through the template 5 and is connected to the crossbeam frame 2. The nut 42 is threaded to the bolt 41 and is located on the outside of the template 5. A sealing gasket 43 is provided between the nut 42 and the template 5 to prevent concrete 6 from leaking. By tightening the nut 42, the templates 5 are brought into close contact. The template 5 is U-shaped, and both ends of the template 5 are tightly attached to the outer walls of the embedded parts 3 on both sides of the crossbeam. Preferably, a rubber layer is provided at the contact points between the templates 5 and at the contact points between the template 5 and the outer walls of the embedded parts 3 to prevent concrete 6 from leaking.

[0024] In an optional embodiment, concrete 6 is made of early-strength micro-expansion concrete or early-strength self-compacting concrete. The early-strength micro-expansion concrete is made by combining early-strength cement, polycarboxylate superplasticizer, expansion agent and continuously graded aggregate. Its mix proportion is designed according to engineering requirements to ensure fluidity, strength and durability.

[0025] Working principle: First, during the tower construction phase, embedded parts 3 are pre-embedded and accurately positioned; then, the crossbeam frame 2 is hoisted and its two ends are inserted into the box 31 windows of the embedded parts 3, and fixed by welding or connecting bolts; then, the formwork 5 is installed and tightened by the bolts 41 of the connector 4, and the sealing gasket 43 is pressed tight; then, concrete 6 is poured from the top of the crossbeam, and the concrete 6 fills the gaps of the crossbeam frame 2 and the inside of the embedded parts 3, and is compacted by vibration; finally, after the concrete 6 hardens, the formwork 5 is removed, and the construction of the crossbeam is completed, avoiding the installation and removal of the support frame.

[0026] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more unless otherwise explicitly specified.

[0029] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stiffened framework concrete pylon beam arranged between pylon (1) characterized in that, It includes a crossbeam and embedded parts (3). The crossbeam includes a crossbeam frame (2) and an outer concrete layer. Both ends of the crossbeam frame (2) are connected to embedded parts (3). The embedded parts (3) are set at the same height position on the cable tower (1). Connectors (4) for connecting the template (5) are set on the crossbeam frame (2). Concrete (6) is set around the crossbeam frame (2) and inside the embedded parts (3) to form an outer concrete layer.

2. The stiff skeleton concrete pylon beam according to claim 1, characterized in that: The crossbeam frame (2) includes a main truss (21), vertical members (22), diagonal members (23) and web members (24). The main truss (21) has at least four parallel members. Both ends of the main truss (21) are connected to the embedded parts (3) on both sides. The main truss (21) is arranged in a rectangular shape. Several vertical members (22) are evenly arranged between adjacent main trusses (21). The length direction of the vertical members (22) is perpendicular to the length direction of the main truss (21). The diagonal members (23) are inclined between adjacent main trusses (21). The two ends of the diagonal members (23) are respectively connected to the different ends of the adjacent vertical members (22). The web members (24) are inclined between the main trusses (21) arranged diagonally.

3. The stiff skeleton concrete pylon beam according to claim 2, characterized in that: The embedded part (3) includes a box body (31) welded from high-strength steel plates, stiffening ribs (32) set on the inner and outer sides of the box body (31), and a horizontal plate (33) set on the side of the box body (31) away from the crossbeam frame (2); The inner cross section of the box (31) corresponds to the outer cross section of the beam frame (2), and the surface of the horizontal plate (33) is larger than the outer cross section of the box (31).

4. The stiff skeleton concrete pylon beam according to claim 3, characterized in that: The connector (4) includes a bolt (41), a nut (42) and a gasket (43). The bolt (41) passes through the template (5) and is connected to the beam frame (2). The nut (42) is threaded to the bolt (41) and is located on the outside of the template (5). A gasket (43) is provided between the nut (42) and the template (5) to prevent concrete (6) leakage.

5. The stiff skeleton concrete pylon beam according to claim 1, wherein: Concrete (6) uses early-strength micro-expansion concrete or early-strength self-compacting concrete materials.

6. The stiff skeleton concrete pylon beam according to claim 3, characterized in that: A window is opened at one end of the box body (31) near the crossbeam frame (2) for inserting the crossbeam frame (2) and ensuring the flow of concrete (6) material. The stiffening ribs (32) on the inside of the box body (31) can be in close contact with the concrete (6) material.

7. The stiff skeleton concrete pylon beam according to claim 2, characterized in that: The main truss (21), vertical members (22) and diagonal members (23) are all made of angle steel or I-beams, and the web members (24) are made of round steel pipes.

Images