Unloading plate type abutment

Abstract

The utility model relates to the field of bridge engineering, and discloses an unloading plate type bridge abutment which comprises an abutment cap, an abutment body and an unloading plate, the abutment cap is arranged at the top of the abutment body, the unloading plate is fixedly connected to the abutment body, the unloading plate is buried in earthwork, and the unloading plate is horizontally arranged. The bridge abutment has the effect that the stability of the bridge abutment is guaranteed under the condition that the space occupied by the bridge abutment is reduced.

Description

Technical Field

[0001] The present application relates to the field of bridge engineering, and in particular to a load-releasing plate-type abutment. Background Art

[0002] Abutments are structures located at both ends of a bridge that support the superstructure of the bridge and connect to the embankment. In addition to transferring the load of the superstructure of the bridge to the foundation, they also have the function of resisting the fill pressure behind the abutment, stabilizing the bridgehead roadbed, and connecting the bridgehead line and the bridge line reliably and smoothly. Abutments are generally stone or concrete structures.

[0003] During use, the abutment will be subjected to the soil pressure from the rear. In order to prevent the abutment from tipping over, a slope is usually cast in front of the abutment during its construction to increase its compressive strength. However, the setting of the slope usually occupies more space under the bridge, which may easily affect the passage of water or people under the bridge. In addition, the abutment body is relatively thick, consumes a large amount of concrete, and has poor economy. Utility Model Content

[0004] In order to alleviate the problem that the existing abutments easily occupy the space under the bridge due to the setting of the slope and consume a large amount of concrete, the present application provides a unloading plate abutment.

[0005] The present application provides a load-relief plate abutment, which adopts the following technical solution:

[0006] A load-relief plate abutment comprises an abutment cap, an abutment body and a load-relief plate, wherein the abutment cap is arranged on the top of the abutment body, the load-relief plate is fixedly connected to the abutment body, the load-relief plate is buried in earthwork, and the load-relief plate is arranged horizontally.

[0007] By adopting the above technical solution, the unloading plate is integrally cast on the abutment, and the horizontally arranged unloading plate is buried in the rear earthwork. The unloading plate will bear part of the earth pressure, reduce the earth pressure borne by the abutment, and ensure the stability of the abutment while reducing the space occupied by the abutment.

[0008] Preferably, a reinforcement angle is provided at the connection between the unloading plate and the platform body, and the reinforcement angle is integrally cast between the unloading plate and the platform body.

[0009] By adopting the above technical solution, the pressure bearing capacity of the unloading plate is improved by integrally casting a reinforcement angle at the connection between the unloading plate and the platform body.

[0010] Preferably, the reinforcement angle is located at the bottom of the unloading plate.

[0011] By adopting the above technical solution, the reinforcement angle is set at the bottom of the unloading plate, and the reinforcement angle can support the unloading plate. The setting of the reinforcement angle is utilized to reduce the cantilever length of the unloading plate and improve the support strength of the unloading plate.

[0012] Preferably, a plurality of unloading pipes are provided on the unloading plate, each of the unloading pipes is fixedly connected to the unloading plate, and each of the unloading pipes is buried in the earth.

[0013] By adopting the above technical solution, since the unloading plate is buried in the earth, it can not only bear the lateral earth pressure, but also use the unloading pipe to support the unloading plate, thereby further improving the bearing capacity of the unloading plate.

[0014] Preferably, a plurality of grouting holes are provided on the unloading pipes that are spaced apart from each other.

[0015] By adopting the above technical solution, during the construction of the abutment, cement mortar can be poured into the unloading pipe. The cement mortar will penetrate into the earth around the unloading pipe through multiple grouting holes, thereby improving the compactness of the earth near the abutment body.

[0016] Preferably, the unloading pipe with the grouting hole is recorded as the first unloading pipe, and the unloading pipe without the grouting hole is recorded as the second unloading pipe. A geotextile is arranged on the top of each second unloading pipe, and the bottoms of multiple second unloading pipes are connected to a drainage pipe, which passes through the platform body and extends to the outside of the platform body.

[0017] By adopting the above technical solution, a geotextile is arranged on the second unloading pipe. When the earthwork is soaked in rainy weather, the rainwater can penetrate into the second unloading pipe through the geotextile and then be discharged through the drain pipe, thereby ensuring the drainage capacity of the earthwork behind the abutment, reducing the possibility of waterlogging of the filler behind the abutment, and improving the stability of the roadbed structure.

[0018] Preferably, each of the second unloading pipes is provided with a water inlet pipe, the geotextile is coated around the second unloading pipe and blocks the top of the second unloading pipe, and the water inlet pipe extends from the top of the earthwork and is connected to the external environment.

[0019] By adopting the above technical solution, when water accumulates above the roadbed, the accumulated water can enter the second unloading pipe from the water inlet pipe, and then the roadbed can be drained; at the same time, the moisture in the earthwork seeps into the drainage through the geotextile, and the mixed mud and sand will be deposited in the drainage pipe. When the accumulated water on the roadbed is discharged, the drainage pipe can be flushed at the same time.

[0020] Preferably, each of the water inlet pipes is provided with a blocking piece, and the blocking piece includes a sliding rod, a blocking plate and a spring. The sliding rod is slidably connected to the water inlet pipe, the blocking plate is fixedly connected to the sliding rod, and the spring is arranged between the water inlet pipe and the blocking plate. The blocking plate blocks the water inlet pipe under the pull of the spring.

[0021] By adopting the above technical solution, under normal circumstances, the spring pulls the blocking plate to block the water inlet pipe to prevent debris from entering the water inlet pipe; when drainage is required, the blocking plate is pulled upward to open the drainage pipe.

[0022] In summary, this application at least includes the following beneficial technical effects:

[0023] 1. By integrally casting the unloading plate on the abutment and burying the horizontal unloading plate in the rear earthwork, the unloading plate will bear part of the earth pressure, reduce the earth pressure on the abutment, and ensure the stability of the abutment while reducing the space occupied by the abutment;

[0024] 2. By setting a reinforcement angle between the platform body and the unloading plate, the cantilever length of the unloading plate can be reduced by setting the reinforcement angle, thereby improving the support strength of the unloading plate;

[0025] 3. By arranging a plurality of unloading pipes on the unloading plate and using the unloading pipes to support the unloading plate, the bearing capacity of the unloading plate is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 2 It is a structural schematic diagram of the unloading pipe in the embodiment of the present application;

[0028] Figure 3 It is a schematic diagram of the structure of the geotextile in the embodiment of the present application;

[0029] Figure 4 It is a schematic diagram of the structure of the blocking member in the embodiment of the present application.

[0030] Figure numerals: 100, platform cap; 200, platform body; 300, unloading plate; 310, reinforcement angle; 400, unloading pipe; 410, grouting hole; 420, first unloading pipe; 430, second unloading pipe; 500, geotextile; 600, drainage pipe; 700, water inlet pipe; 710, blocking piece; 711, sliding rod; 712, blocking plate; 713, spring. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a load-releasing plate-type abutment.

[0033] Reference Figure 1 A load-relief plate 300 type abutment includes an abutment body 200, a cap 100 is integrally formed on the top of the abutment body 200, the cap 100 is used to receive the bridge slab, a load-relief plate 300 is fixedly connected to one side of the abutment body 200, the load-relief plate 300 is integrally cast with the abutment body 200, the load-relief plate 300 is horizontally arranged, and the load-relief plate 300 is buried in the earth behind the abutment body 200.

[0034] A reinforcement angle 310 is provided at the connection between the unloading plate 300 and the platform body 200 . The reinforcement angle 310 is located at the bottom of the unloading plate 300 . The reinforcement angle 310 is integrally cast between the platform body 200 and the unloading plate 300 .

[0035] A load-relief plate 300 extending into the earth is provided on the abutment body 200. When the abutment is in use, part of the earth pressure will act on the load-relief plate 300 in the vertical direction, reducing the lateral earth pressure on the abutment body 200, thereby ensuring the stability of the abutment while reducing the space occupied by the abutment.

[0036] Reference Figure 1 and Figure 2 In order to further improve the pressure bearing capacity of the platform body 200, a plurality of unloading pipes 400 are provided on the unloading plate 300, and the plurality of unloading pipes 400 are arranged at intervals along the length direction of the unloading plate 300. Each unloading pipe 400 is fixedly connected to the unloading plate 300, and the unloading pipe 400 and the unloading plate 300 are integrally cast and formed. Each unloading pipe 400 is penetrated in the earthwork, and a plurality of grouting holes 410 are provided on the circumference of the mutually spaced unloading pipes 400. When pouring the abutment, the construction personnel can inject cement mortar into the unloading pipe 400 with the grouting holes 410. After the cement mortar enters the unloading pipe 400, it will penetrate into the nearby earthwork, thereby improving the compactness of the earthwork near the platform body 200 and improving the strength of the abutment.

[0037] Reference Figure 2 and Figure 3 The multiple unloading pipes 400 with grouting holes 410 are marked as first unloading pipes 420, and the unloading pipes 400 without grouting holes 410 are marked as second unloading pipes 430. A geotextile 500 is provided at the top of each second unloading pipe 430, and the geotextile 500 is used to block the top opening of the second unloading pipe 430. The bottoms of the multiple second unloading pipes 430 are connected to a drainage pipe 600, which extends through the platform body 200 to one side of the platform body 200.

[0038] Each second unloading pipe 430 is penetrated by a water inlet pipe 700, which is fixedly connected to the second unloading pipe 430 through a support rod. The diameter of the water inlet pipe 700 is smaller than the diameter of the second unloading pipe 430. There is a gap between the water inlet pipe 700 and the second unloading pipe 430. The geotextile 500 blocks the gap between the water inlet pipe 700 and the second unloading pipe 430. The top of the water inlet pipe 700 extends upward to the outside of the earthwork and communicates with the external environment. A plugging member 710 is installed on each water inlet pipe 700.

[0039] Reference Figure 2 and Figure 4 Each blocking member 710 includes a sliding rod 711 slidably connected to the inside of the water inlet pipe 700. The sliding rod 711 is coaxially arranged with the water inlet pipe 700. The sliding rod 711 slides along its own length direction. A blocking plate 712 is fixedly connected to the sliding rod 711. The blocking plate 712 is used to block the second unloading pipe 430. A spring 713 is sleeved on the outer side of the sliding rod 711. One end of the spring 713 is fixedly connected to the blocking plate 712, and the other end of the spring 713 is fixedly connected to the second unloading pipe 430. The blocking plate 712 blocks the water inlet pipe 700 under the pull of the spring 713.

[0040] In rainy days and other situations, after rainwater seeps into the earth, the infiltrated water will be able to penetrate into the second unloading pipe 430 through the geotextile 500, and then be discharged from the drainage pipe 600, reducing the possibility that the infiltrated water above the unloading plate 300 will be difficult to infiltrate due to the obstruction of the unloading plate 300, thereby improving the anti-freezing ability of the roadbed; at the same time, when a large amount of water accumulates above the roadbed, the blocking plate 712 is pulled upward to allow the accumulated water to enter the water inlet pipe 700, and then enter the second unloading pipe 430, thereby being able to wash away the mud and sand accumulated in the water inlet pipe 700 by the infiltration of the earthwork fabric, reducing the possibility of the drainage pipe 600 being blocked by long-term accumulation.

[0041] The implementation principle of a unloading plate type abutment in an embodiment of the present application is as follows: by integrally casting the unloading plate 300 on one side of the abutment body 200 and burying the unloading plate 300 in the earth, the unloading plate 300 bears the earth pressure above it, reducing the earth pressure borne by the abutment body 200, thereby ensuring the stability of the abutment while reducing the space occupied by the abutment. At the same time, by utilizing the provision of the second unloading pipe 430, the infiltrated water above the unloading plate 300 can be drained in time, thereby improving the drainage capacity of the earth above the unloading plate 300.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A load-relief plate abutment, characterized in that: The platform comprises a platform cap (100), a platform body (200) and a load-relief plate (300), wherein the platform cap (100) is arranged on the top of the platform body (200), the load-relief plate (300) is fixedly connected to the platform body (200), the load-relief plate (300) is buried in the earth, and the load-relief plate (300) is arranged horizontally.

2. The unloading plate abutment according to claim 1, characterized in that: A reinforcement angle (310) is provided at the connection between the unloading plate (300) and the platform body (200), and the reinforcement angle (310) is integrally cast between the unloading plate (300) and the platform body (200).

3. The unloading plate abutment according to claim 2, characterized in that: The reinforcement angle (310) is located at the bottom of the unloading plate (300).

4. The unloading plate abutment according to claim 1, characterized in that: A plurality of unloading pipes (400) are provided on the unloading plate (300), each of the unloading pipes (400) is fixedly connected to the unloading plate (300), and each of the unloading pipes (400) is buried in the earth.

5. The unloading plate (300) type abutment according to claim 4, characterized in that: A plurality of grouting holes (410) are provided on the unloading pipes (400) that are spaced apart from each other.

6. The unloading plate abutment according to claim 5, characterized in that: The unloading pipe (400) provided with the grouting hole (410) is recorded as a first unloading pipe (420), and the unloading pipe (400) not provided with the grouting hole (410) is recorded as a second unloading pipe (430). A geotextile (500) is arranged at the top of each second unloading pipe (430), and a drainage pipe (600) is connected to the bottom of a plurality of the second unloading pipes (430). The drainage pipe (600) passes through the platform body (200) and extends to the outside of the platform body (200).

7. The unloading plate abutment according to claim 6, characterized in that: A water inlet pipe (700) is inserted into each of the second unloading pipes (430), the geotextile (500) is wrapped around the circumference of the second unloading pipe (430) and blocks the top of the second unloading pipe (430), and the water inlet pipe (700) extends from the top of the earthwork and is connected to the external environment.

8. The unloading plate abutment according to claim 7, characterized in that: Each of the water inlet pipes (700) is provided with a blocking member (710), the blocking member (710) comprising a sliding rod (711), a blocking plate (712) and a spring (713); the sliding rod (711) is slidably connected to the water inlet pipe (700); the blocking plate (712) is fixedly connected to the sliding rod (711); the spring (713) is arranged between the water inlet pipe (700) and the blocking plate (712); and the blocking plate (712) blocks the water inlet pipe (700) under the pull of the spring (713).

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