Concrete-filled box steel beam

Abstract

The utility model discloses a concrete filling box -shaped steel beam, including box -shaped steel beam, the inside of box -shaped steel beam is provided with heat insulating layer, the inside of box -shaped steel beam is evenly provided with a plurality of baffle along the length direction, the baffle and box -shaped steel beam form filling cavity between, the both sides of box -shaped steel beam are symmetrically provided with lateral baffle plate, the top of box -shaped steel beam is fixedly connected with top plate, the top of top plate is provided with a plurality of mounting hole, the quantity of mounting hole and filling cavity corresponds, the inside of mounting hole is provided with ultrasonic vibrator. The utility model discloses a grouting pipe and filling mouth correspond, and the grouting pipe is installed at the filling mouth, because the grouting pipe is inclined to set up, thereby slows down the down -moving speed of concrete, and controls the rotating speed of grouting pump, thereby makes the pouring speed control in the appropriate range, and simultaneously, starts ultrasonic vibrator when pouring, thereby improves the compactness and uniformity of concrete through high -frequency vibration, to improve the overall quality of box -shaped steel beam.

Description

Technical Field

[0001] This utility model relates to the field of box-shaped steel beam technology, specifically to concrete-filled box-shaped steel beams. Background Technology

[0002] Concrete-filled box girder is a composite structural component. It forms a cooperating force system by injecting concrete into a closed box-shaped steel shell. It is a common structural form for long-span bridges. The main body of the box girder consists of a top plate, bottom plate, web plate and transverse and longitudinal diaphragms, which are constructed by full welding process. The top plate often adopts an orthotropic bridge deck design with longitudinal stiffeners. It has the characteristics of wide and flat, strong bending and torsional resistance, and is suitable for long-span scenarios such as urban overpasses and overpasses.

[0003] When filling the interior of a box girder with concrete, factors such as grouting speed and the degree of concrete mixing can easily cause honeycomb-like pits and voids to appear after the poured concrete has solidified, resulting in weak sections and affecting the overall quality of the concrete-filled box girder. Utility Model Content

[0004] The purpose of this invention is to provide a concrete-filled box girder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concrete-filled box-shaped steel beam, comprising a box-shaped steel beam, wherein a heat insulation layer is provided inside the box-shaped steel beam, and multiple partitions are uniformly arranged along the length direction inside the box-shaped steel beam, forming a filling cavity between the partitions and the box-shaped steel beam, lateral blocking plates are symmetrically arranged on both sides of the box-shaped steel beam, and a top plate is fixedly connected to the top of the box-shaped steel beam, wherein multiple mounting holes are opened on the top of the top plate, the number of mounting holes corresponding to the number of filling cavities, and an ultrasonic vibrator is arranged inside the mounting holes.

[0006] As a further preferred embodiment of this technical solution, the top of the top plate is provided with multiple filling ports, and grouting pipes are correspondingly provided on the top of the filling ports.

[0007] As a further preferred embodiment of this technical solution, extension plates are symmetrically arranged on both sides of the box-shaped steel beam, and an inclined support plate is fixedly connected between the extension plate and the box-shaped steel beam, forming a movable cavity between the inclined support plate and the box-shaped steel beam.

[0008] As a further preferred embodiment of this technical solution, the inclined support plate is provided with a plurality of mounting grooves evenly distributed along its length, and the number of mounting grooves corresponds to the number of filling cavities.

[0009] As a further preferred embodiment of this technical solution, a drive motor is correspondingly provided at the top of the mounting groove, the output shaft of the drive motor is fixedly connected to a rotating shaft, a rotating plate is fixedly sleeved on the surface of the rotating shaft, and the rotating plate is located inside the movable cavity.

[0010] As a further preferred embodiment of this technical solution, an adjustment cavity is provided on one side of the rotating plate, and a striking plate is slidably connected inside the adjustment cavity. A connecting spring is provided between the striking plate and the adjustment cavity.

[0011] As a further preferred embodiment of this technical solution, a threaded hole is provided on one side of the top of the rotating plate, and a fastening bolt is connected to the internal thread of the threaded hole, which abuts against the striking plate.

[0012] This utility model provides a concrete-filled box-shaped steel beam, which has the following beneficial effects:

[0013] (1) This utility model corresponds the grouting pipe and the filling port, and installs the grouting pipe at the filling port. Due to the inclined setting of the grouting pipe, the downward movement speed of the concrete is slowed down, and the rotation speed of the grouting pump is controlled, so that the pouring speed is controlled within a suitable range. At the same time as pouring, the ultrasonic vibrator is started, so as to improve the density and uniformity of the concrete through high-frequency vibration, thereby improving the overall quality of the steel beam after the concrete solidifies.

[0014] (2) In this utility model, when grouting, the drive motor is started and its output shaft drives the rotating shaft to rotate. The rotating plate rotates accordingly. After rotating to a certain angle, the striking plate contacts the box-shaped steel beam, thereby striking its side plate to accelerate the downward movement of concrete. At the same time, the air inside the concrete can be discharged to reduce the generation of honeycomb pits and holes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the mounting hole and filling port structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the partition structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotating plate and striking plate structure of this utility model.

[0019] In the diagram: 1. Box-shaped steel beam; 2. Insulation layer; 3. Partition plate; 4. Side blocking plate; 5. Top plate; 6. Mounting hole; 7. Ultrasonic vibrator; 8. Filling port; 9. Grouting pipe; 10. Extension plate; 11. Inclined support plate; 12. Movable cavity; 13. Mounting groove; 14. Drive motor; 15. Rotating shaft; 16. Rotating plate; 17. Adjusting cavity; 18. Striking plate; 19. Connecting spring; 20. Threaded hole; 21. Fastening bolt. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figures 1 to 4 As shown, in this embodiment, the concrete-filled box girder includes a box girder 1. The box girder 1 has an insulation layer 2 inside. Multiple partitions 3 are evenly arranged along the length of the box girder 1, forming a filling cavity between the partitions 3 and the box girder 1. Lateral blocking plates 4 are symmetrically arranged on both sides of the box girder 1. A top plate 5 is fixedly connected to the top of the box girder 1. Multiple mounting holes 6 are opened on the top of the top plate 5. The number of mounting holes 6 corresponds to the number of filling cavities. An ultrasonic vibrator 7 is installed inside the mounting holes 6.

[0022] The grouting pipe 9 is aligned with the filling port 8, and the grouting pipe 9 is installed at the filling port 8. Due to the inclined setting of the grouting pipe 9, the downward movement speed of the concrete is slowed down, and the speed of the grouting pump is controlled, so that the pouring speed is controlled within a suitable range. At the same time as pouring, the ultrasonic vibrator 7 is started, so as to improve the density and uniformity of the concrete through high-frequency vibration, thereby improving the overall quality of the steel beam after the concrete solidifies.

[0023] Multiple partitions 3 are installed inside the box-shaped steel beam 1, forming a filling cavity between the partitions 3 and the box-shaped steel beam 1, thereby adjusting the internal space to enhance the bond between the concrete and the box-shaped steel beam 1 and improve the overall bending stiffness. In addition, a heat insulation layer 2 is installed inside the box-shaped steel beam 1 to reduce the temperature difference inside the steel box and avoid the generation of thermal stress.

[0024] The top of the top plate 5 has multiple filling ports 8, and the top of the filling ports 8 is provided with grouting pipes 9.

[0025] The box-shaped steel beam 1 has symmetrical extension plates 10 on both sides. An inclined support plate 11 is fixedly connected between the extension plate 10 and the box-shaped steel beam 1, and a movable cavity 12 is formed between the inclined support plate 11 and the box-shaped steel beam 1.

[0026] An inclined support plate 11 is provided between the extension plate 10 and the box girder 1 to support the side plate of the box girder 1, thereby reducing the pressure on the concrete and ensuring stability during use.

[0027] The inclined support plate 11 has multiple mounting slots 13 evenly arranged along its length, and the number of mounting slots 13 corresponds to the number of filling cavities.

[0028] A drive motor 14 is provided at the top of the mounting slot 13. The output shaft of the drive motor 14 is fixedly connected to a rotating shaft 15. A rotating plate 16 is fixedly sleeved on the surface of the rotating shaft 15. The rotating plate 16 is located inside the movable cavity 12.

[0029] An adjustment cavity 17 is provided on one side of the rotating plate 16. A striking plate 18 is slidably connected inside the adjustment cavity 17, and a connecting spring 19 is provided between the striking plate 18 and the adjustment cavity 17.

[0030] A threaded hole 20 is provided on one side of the top of the rotating plate 16. A fastening bolt 21 is connected to the threaded hole 20, and the fastening bolt 21 abuts against the striking plate 18.

[0031] Start the drive motor 14, and its output shaft drives the rotating shaft 15 to rotate. The rotating plate 16 rotates accordingly. After rotating to a certain angle, the striking plate 18 contacts the box steel beam 1, thereby striking its side plate to accelerate the downward movement of concrete. At the same time, it can expel the air inside the concrete to reduce the generation of honeycomb, pitting, and holes.

[0032] The rotating plate 16 and the striking plate 18 are fixed together by fastening bolts 21. After the grouting is completed and the drive motor 14 is removed, the drive motor 14 drives the rotating shaft 15 to tilt. By rotating the fastening bolts 21, the rotating plate 16 and the striking plate 18 are loosened and can be removed from the mounting slot 13 for easy reuse.

[0033] This utility model provides a concrete-filled box-shaped steel beam, the specific working principle of which is as follows:

[0034] In use, the grouting pipe 9 is aligned with the filling port 8, and the grouting pipe 9 is installed at the filling port 8. The grouting pump is used to pump concrete into the grouting pipe 9, and the concrete moves down along the inclination angle of the grouting pipe 9 into the filling cavity for pouring. At the same time, the ultrasonic vibrator 7 is started, thereby improving the density and uniformity of the concrete through high-frequency vibration. The drive motor 14 is started, and its output shaft drives the rotating shaft 15 to rotate. The rotating plate 16 rotates accordingly. After rotating to a certain angle, the striking plate 18 contacts the box steel beam 1, thereby striking its side plate to accelerate the downward movement of the concrete. At the same time, the air inside the concrete can be discharged to reduce the generation of honeycomb, pitting and pores.

[0035] 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.

Claims

1. A concrete-filled box girder, comprising a box girder (1), characterized in that: The box-shaped steel beam (1) is provided with a heat insulation layer (2) inside. Multiple partitions (3) are evenly arranged inside the box-shaped steel beam (1) along the length direction. A filling cavity is formed between the partitions (3) and the box-shaped steel beam (1). Lateral blocking plates (4) are symmetrically arranged on both sides of the box-shaped steel beam (1). A top plate (5) is fixedly connected to the top of the box-shaped steel beam (1). Multiple mounting holes (6) are opened on the top of the top plate (5). The number of mounting holes (6) corresponds to the number of filling cavities. An ultrasonic vibrator (7) is arranged inside the mounting holes (6).

2. The concrete-filled box girder according to claim 1, characterized in that: The top of the top plate (5) is provided with multiple filling ports (8), and the top of the filling ports (8) is provided with grouting pipes (9).

3. The concrete-filled box girder according to claim 1, characterized in that: The box-shaped steel beam (1) is symmetrically provided with extension plates (10) on both sides. An inclined support plate (11) is fixedly connected between the extension plate (10) and the box-shaped steel beam (1). An active cavity (12) is formed between the inclined support plate (11) and the box-shaped steel beam (1).

4. The concrete-filled box girder according to claim 3, characterized in that: The inclined support plate (11) is uniformly provided with a plurality of mounting grooves (13) along its length, and the number of mounting grooves (13) corresponds to the number of filling cavities.

5. The concrete-filled box girder according to claim 4, characterized in that: A drive motor (14) is provided at the top of the mounting slot (13). The output shaft of the drive motor (14) is fixedly connected to a rotating shaft (15). A rotating plate (16) is fixedly sleeved on the surface of the rotating shaft (15). The rotating plate (16) is located inside the movable cavity (12).

6. The concrete-filled box girder according to claim 5, characterized in that: An adjustment cavity (17) is provided on one side of the rotating plate (16), and a striking plate (18) is slidably connected inside the adjustment cavity (17). A connecting spring (19) is provided between the striking plate (18) and the adjustment cavity (17).

7. The concrete-filled box girder according to claim 5, characterized in that: The top side of the rotating plate (16) is provided with a threaded hole (20), and a fastening bolt (21) is connected to the threaded hole (20) internally. The fastening bolt (21) abuts against the striking plate (18).

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