Hogging moment tensioning beam body embedded pipeline grouting device

Abstract

The utility model relates to the technical field of bridge construction, in particular to a hogging moment tensioning beam body embedded pipeline grouting device. According to the hogging moment tensioning beam body embedded pipeline grouting device, the device can be embedded in the beam body construction process, the upper grouting pipe is changed to be vertically upward to be exposed out of the top face of a beam body under the action of the conical disc, grouting is convenient, and construction safety is improved. A hogging moment tensioning beam body embedded pipeline mud jacking device comprises a beam body and cover plates, and the left cover plate and the right cover plate are placed on the beam body. The device is pre-buried in the construction interior of a beam body, then the upper grouting pipe is vertically and upwards exposed out of a bridge floor under the action of the conical disc, and after the bridge construction is completed, the interior of the corrugated pipe can be grouted through the upper grouting pipe, so that the device can be pre-buried in the construction process of the beam body, and the construction efficiency is improved. And the upper grouting pipe is changed to be vertically upwards exposed out of the top surface of the beam body under the action of the conical disc, so that grouting is facilitated, and the construction safety effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a negative bending moment tensioned beam body pre-buried pipeline grouting device. Background Art

[0002] Negative bending moment tensioned beams refer to applying prestress at specific locations of the beam, causing the beam to generate a bending moment opposite to the load direction (i.e., negative bending moment) when loaded, thereby improving the beam's bearing capacity and crack resistance. During the construction of negative bending moment tensioned beams, grouting is required in the embedded pipes to improve the integrity of the structure.

[0003] The existing process of pre-buried pipes in negative moment tensioned beams involves cutting off the end strands after negative moment tensioning is complete. PVC grouting pipes are then connected to the grouting holes at both ends. Grouting is then performed after the capped concrete reaches a certain strength. This method requires manual installation of the grouting pipes below the flange plate after tensioning is complete, and subsequent grouting must be performed at the edge of the flange plate, posing a high safety risk.

[0004] Therefore, a negative bending moment tensioned beam pre-buried pipe grouting device has been developed that can be used to pre-embed the device during beam construction, and under the action of the cone disk, the upper grouting pipe is changed to be vertically upward and exposed on the top surface of the beam, which facilitates grouting and improves construction safety. Utility Model Content

[0005] In order to overcome the disadvantage of the gradual process of pre-buried pipes in the existing negative bending moment tensioned beam body, which requires manual installation of grouting pipes at the bottom of the flange plate after tensioning is completed, and the subsequent grouting needs to be performed at the edge of the flange plate, which has a very high safety risk factor, the utility model provides a negative bending moment tensioned beam body pre-buried pipe grouting device that can be pre-buried during beam construction, and under the action of the cone disk, the upper grouting pipe is changed to be vertically upward and exposed to the top surface of the beam body, which is convenient for grouting and improves construction safety.

[0006] The technical solution is as follows: a negative bending moment tensioned beam pre-buried pipe grouting device includes a beam body, a cover plate, a steel cable, a main grouting pipe, an upper grouting pipe, a cone plate, a corrugated pipe, a reinforcement bar and a connecting plate. Two left and right cover plates are placed on the beam body. The inner sides of the left and right parts of the beam body are connected to two front and rear cone plates, and the cone plates are connected to anchor plates, and the anchor plates are connected to corrugated pipes. The left and right adjacent cone plate beams are directly connected to reinforcement bars, and steel cables are placed inside the reinforcement bars. The steel cables are connected to the cone plate beam body. The left and right sides of the corrugated pipe are connected to the main grouting pipe, and the upper middle part of the main grouting pipe is connected to the upper grouting pipe, and the main grouting pipe is connected to the connecting plate.

[0007] Furthermore, the main grouting pipe and the upper grouting pipe are both made of PVC.

[0008] Furthermore, the cone disk is a bowl-shaped structure.

[0009] Furthermore, the upper grouting pipe is 20-30 cm higher than the top cover plate of the beam body.

[0010] Furthermore, the reinforcing rib is a spiral structure.

[0011] Furthermore, a flange is provided on the connecting plate.

[0012] Beneficial effect: The utility model embeds the device inside the beam construction, and then the upper grouting pipe is vertically exposed to the bridge deck under the action of the cone disk. After the bridge construction is completed, the inner part of the corrugated pipe can also be grouting through the upper grouting pipe, so that the device can be embedded during the beam construction, and the upper grouting pipe is changed to be vertically exposed to the top surface of the beam under the action of the cone disk, which facilitates grouting and improves construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 It is a partial three-dimensional structural diagram of the utility model.

[0015] Figure numbers: 1- beam body, 2- cover plate, 3- steel cable, 4- main grouting pipe, 41- upper grouting pipe, 5- cone plate, 51- anchor plate, 6- corrugated pipe, 7- reinforcement rib, 8- connecting plate. DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0017] A negative bending moment tension beam body embedded pipe grouting device, such as Figure 1 and Figure 2 As shown, it includes a beam body 1, a cover plate 2, a steel cable 3, a main grouting pipe 4, an upper grouting pipe 41, a cone plate 5, a corrugated pipe 6, a reinforcement rib 7 and a connecting plate 8. Two left and right cover plates 2 are placed on the beam body 1. The inner sides of the left and right parts of the beam body 1 are connected to two front and rear cone plates 5. The cone plates 5 are bowl-shaped structures. The cone plates 5 are connected to anchor plates 51. The anchor plates 51 are connected to corrugated pipes 6. The left and right adjacent cone plates 5 are directly connected to the beam body 1 with reinforcement ribs 7. The reinforcing rib 7 has a spiral structure, and a steel cable 3 is placed inside the reinforcing rib 7. The steel cable 3 is connected to the cone disk 5 and the beam body 1. The left and right sides of the corrugated pipe 6 are connected to the main grouting pipe 4, and the upper side of the middle of the main grouting pipe 4 is connected to the upper grouting pipe 41. The upper grouting pipe 41 is 20-30 cm higher than the top cover plate of the beam body 1. The main grouting pipe 4 and the upper grouting pipe 41 are both made of PVC. The main grouting pipe 4 is connected to a connecting plate 8, and the connecting plate 8 is provided with a flange for easy connection.

[0018] When using the utility model, first, when the beam body 1 of the bridge is under construction, the device is pre-buried inside the beam body 1 of the bridge. By connecting the steel cable 3 with a jack or other tensioning equipment, tension can be applied to the steel cable 3. After the tension of the steel cable 3 is adjusted to a specified value, the exposed end of the steel cable 3 is cut off, and the anchor plate 51 is pulled by the steel cable 3. After the adjustment of the steel cable 3 is completed, grouting can be performed in the corrugated pipe 6 through the main grouting pipe 4. The main grouting pipe 4 can be easily fixed by the connecting plate 8 so that the slurry can be evenly filled into the reinforcing rib 7. Under the action of the anchor plate 51 and the slurry, the negative bending moment tensioning beam of the beam body 1 of the bridge is completed. Among them, the reinforcing ribs 7 can increase the tensile strength of the beam 1 of the concrete bridge. By opening the cover plate 2, the casting condition of the bridge beam 1 can be observed. When the beam 1 is being constructed, the upper grouting pipe 41 is exposed vertically upward on the bridge deck due to the action of the cone disk 5. After the bridge construction is completed, the interior of the corrugated pipe 6 can also be grouted through the upper grouting pipe 41. At the same time, the grouting saturation in the corrugated pipe 6 can also be observed through the pipe mouth of the upper grouting pipe 41. This makes it possible to pre-embed the device during the construction of the beam 1, and under the action of the cone disk 5, the upper grouting pipe 41 is changed to be exposed vertically upward on the top surface of the beam 1, which is convenient for grouting and improves construction safety.

[0019] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. Negative bending moment tension beam embedded pipeline grouting device, characterized in that: The invention comprises a beam body (1), a cover plate (2), a steel cable (3), a main grouting pipe (4), an upper grouting pipe (41), a cone plate (5), a corrugated pipe (6), a reinforcing rib (7) and a connecting plate (8). Two left and right cover plates (2) are placed on the beam body (1). Two front and rear cone plates (5) are connected to the inner sides of the left and right parts of the beam body (1). An anchor plate (51) is connected to the cone plates (5). The anchor plates (51) are connected to the corrugated pipe (6). The left and right adjacent cone plates (5) and the beam body (1) are directly connected to the reinforcing rib (7). A steel cable (3) is placed inside the reinforcing rib (7). The steel cable (3) is connected to the cone plate (5) and the beam body (1). The left and right sides of the corrugated pipe (6) are connected to the main grouting pipe (4). The upper middle side of the main grouting pipe (4) is connected to the upper grouting pipe (41). The main grouting pipe (4) is connected to the connecting plate (8).

2. The negative bending moment tension beam embedded pipeline grouting device according to claim 1 is characterized in that: The main grouting pipe (4) and the upper grouting pipe (41) are both made of PVC.

3. The negative bending moment tension beam embedded pipeline grouting device according to claim 1 is characterized in that: The cone disk (5) is a bowl-shaped structure.

4. The negative bending moment tension beam embedded pipeline grouting device according to claim 1 is characterized in that: The upper grouting pipe (41) is 20-30 cm higher than the top cover plate (2) of the beam body (1).

5. The negative bending moment tension beam embedded pipeline grouting device according to claim 4 is characterized in that: The reinforcing rib (7) is a spiral structure.

6. The negative bending moment tension beam embedded pipeline grouting device according to claim 1 is characterized in that: The connecting plate (8) is provided with a flange.

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