Tubular embankment-penetrating culvert gate structure

Abstract

The utility model relates to the technical field of buildings in water conservancy dikes, in particular to a structural form of a tubular dike-penetrating culvert gate, which comprises a gate chamber positioned in a main river channel, and a side pier of the gate chamber is not lower than the ground. The embankment penetrating steel pipe is connected with the lock chamber through a plain concrete connecting pier base; the periphery of the embankment penetrating steel pipe is integrally wrapped with a concrete layer with a certain thickness; the end, embedded in the connecting pier base, of the dike penetrating steel pipe is sleeved with a rigid waterproof wing ring. A water stop belt is arranged between the connecting pier base and the reinforced concrete lock chamber, and straddle geotechnical cloth is arranged at the joint. And an elevation difference of 15-20 centimeters exists between the embankment penetrating steel pipe and the bottom of the inner side of the lock chamber. The problem that the compaction quality of backfill soil of the embankment-penetrating circular pipe is not easy to control can be solved, the seepage damage resistance of the embankment-penetrating steel pipe can be enhanced by increasing the seepage path and preventing concentrated seepage from being generated along the joint surface of the outer wall of the pipe and the filling soil, meanwhile, sediment deposition in the pipe is reduced, and operation management is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of buildings inside water conservancy dikes, in particular to a structural type of a tubular culvert sluice passing through a dike. Background Technique

[0002] A culvert sluice passing through a dike refers to a cave - type water - passing building constructed under a dike by using the principle of a communicating vessel during the construction of a water conservancy project to ensure the safety of the dike and not affect the traffic on the top of the dike, enabling the natural water body to flow under the dike. Gates are often arranged on the upstream (or downstream) side to regulate the water volume, and it is a common type of water intake, discharge, and water - retaining structure inside a dike or a dam. The culvert sluice passing through a dike mainly consists of components such as inlet - outlet side (wing) walls, a sluice chamber, and a tunnel body. It is commonly built with materials such as bricks, stones, concrete, and reinforced concrete. Generally, the aperture is not large, and the shapes include tubular, box - shaped, and arched, etc.

[0003] Due to the influence of factors such as the compaction quality of the backfill soil and the action of water flow, the culvert round pipe passing through the dike is prone to seepage failure, which is a part prone to danger during the flood season. In severe cases, even dike breaches may occur, endangering the basic farmland on both sides and the lives and property of people. Affected by the flood carrying sediment, debris, etc., due to the limited diameter of the small - flow round pipe, it is not suitable for maintenance and silt cleaning. For this reason, we propose a structural type of a tubular culvert sluice passing through a dike. Content of the Utility Model

[0004] In view of the above - mentioned technical problems existing in the prior art, a structural type of a tubular culvert sluice passing through a dike of the present utility model is proposed. It has a novel design, is convenient for construction and has good effects. It can not only solve the problem that the compaction quality of the backfill soil of the culvert round pipe passing through the dike is not easy to control, but also prevent concentrated seepage from occurring along the joint surface between the outer wall of the pipe and the fill by increasing the seepage path, enhance the ability of the steel pipe passing through the dike to resist seepage failure, and at the same time reduce the sediment deposition in the pipe, facilitating operation and management.

[0005] According to one aspect of the present utility model, the following technical solutions are provided:

[0006] A structural type of a tubular culvert sluice passing through a dike includes a sluice chamber located in the main river channel. One side of the sluice chamber is connected to a steel pipe passing through the dike that spans across the river channel, and the other end of the steel pipe extends to a reservoir or a sluice chamber in the tributary river channel; the steel pipe passing through the dike is connected to the sluice chamber through a plain concrete connecting pier; the outer periphery of the steel pipe passing through the dike is integrally wrapped with a concrete layer of a certain thickness; a concrete cut - off ring is sleeved in the middle of the concrete layer.

[0007] Further, the cross - section of the concrete layer wrapped outside the steel pipe passing through the dike is a square structure with missing corners, and chamfers are arranged at the two right - angled corners at the upper end of the square structure.

[0008] Further, the cross - section of the cut - off ring is a square structure, and a through - hole matching the outer side of the concrete layer is arranged inside.

[0009] Furthermore, a rigid waterproof wing ring is sleeved at the end of the steel pipe passing through the dike and embedded in the connecting pier seat.

[0010] Furthermore, a water stop is provided between the connecting pier seat and the reinforced concrete sluice chamber, and a riding-seam geotextile is provided at the joint.

[0011] Furthermore, there is an elevation difference of 15-20 cm between the steel pipe passing through the dike and the bottom inside the sluice chamber.

[0012] Even further, the side piers of the sluice chamber are not lower than the ground.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model can improve the compaction quality of the contact surface between the backfill soil and the steel pipe passing through the dike; by arranging the cut-off rings, the seepage path is extended, and the seepage effect of the water flow on the contact surface of the steel pipe passing through the dike is reduced; through the connecting pier seat, the uneven settlement between the steel pipe passing through the dike and the sluice chamber is reduced; through the elevation difference between the bottom of the pipe and the bottom slab of the sluice chamber, the siltation situation inside the pipeline is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a longitudinal sectional view of the structural type of the pipe-type culvert through the dike of the present utility model;

[0015] Figure 2 is a cross-sectional view of the concrete-wrapped steel pipe passing through the dike of the present utility model;

[0016] Figure 3 is an enlarged view of the structural joint between the connecting pier seat and the sluice chamber of the present utility model.

[0017] Description of the reference numerals: 1. Sluice chamber; 2. Steel pipe passing through the dike; 3 Connecting pier seat; 4. Concrete layer; 5. Cut-off ring; 6. Rigid waterproof wing ring; 7. Water stop; 8. Geotextile; 9. Ground; 11. Geotextile fold. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings.

[0019] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0020] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0021] Please refer toFigures 1 to 3 , a tubular culvert structure type of the present utility model includes a gate chamber 1 located in the main river channel. One side of the gate chamber 1 is connected to a steel pipe passing through the dike 2 that spans across the river channel, and the other end of the steel pipe passing through the dike 2 extends to a reservoir in the tributary river channel or the gate chamber 1. The gate chamber 1 is of a reinforced concrete structure, and the side piers of the gate chamber 1 are not lower than the ground by 9 to prevent a large amount of muddy water from pouring into the gate chamber 1.

[0022] The outer periphery of the steel pipe passing through the dike 2 is integrally wrapped with a concrete layer 4 of a certain thickness. The concrete layer 4 wrapped outside the steel pipe passing through the dike 2 can make the backfill construction of the pipe body contact surface easier, and the compaction quality can be better guaranteed. In addition, it reduces the impact on the safety of the pipe body structure itself during compaction. The cross-section of the concrete layer 4 wrapped outside is a square structure with rounded corners, specifically, chamfers are provided at the two right angles at the upper end of the square structure to reduce the concentrated stress at the edge parts and make the structure safer.

[0023] Preferably, a concrete cut-off ring 5 is sleeved in the middle of the concrete layer 4. The cross-section of the cut-off ring 5 is a square annular structure, and a through hole matching the outside of the concrete layer 4 is provided inside, aiming to extend the seepage path, reduce the hydraulic gradient and flow velocity, and avoid the occurrence of seepage deformation of the backfill soil at the contact surface.

[0024] Preferably, the steel pipe passing through the dike 2 and the gate chamber 1 are connected by a plain concrete connecting pier base 3 to avoid the damage of the contact surface caused by uneven settlement at the interface part. A rigid waterproof wing ring 6 is sleeved at the end of the steel pipe passing through the dike 2 buried in the connecting pier base 3 to strengthen the connection and protect the steel pipe passing through the dike 2. The material of the waterproof wing ring 6 is preferably stainless steel.

[0025] Preferably, a water stop 7 is provided between the connecting pier base 3 and the reinforced concrete gate chamber 1 as a measure to prevent water seepage at the connection part, and a stitch-bonded geotextile 8 is provided at the joint. The stitch-bonded geotextile 8 has a 5-cm-wide geotextile fold 11 at the structural joint to increase the effect of the geotextile in filtering soil and draining water.

[0026] Preferably, there is a height difference of 15 - 20 cm between the steel pipe passing through the dike 2 and the inner bottom of the gate chamber 1, which can form a certain amount of sediment interception in the gate chamber 1, reduce the probability of sediment in the gate chamber 1 entering the steel pipe, and thus reduce the sediment deposition in the steel pipe.

[0027] The present utility model is described through specific embodiments. In combination with specific engineering examples, it has an obvious effect on improving the compaction quality of the backfill soil of the round pipe passing through the dike and preventing the seepage damage of the steel pipe passing through the dike, and can reduce the sediment deposition in the pipeline. In practical applications, various changes can be made to it in terms of form and details without departing from the spirit and scope of the present utility model.

Claims

1. A tubular culvert structure type for crossing the dike, comprising a sluice chamber located in the main river channel, one side of the sluice chamber is connected to a steel pipe for crossing the dike across the river channel, and the other end of the steel pipe extends to a reservoir or a sluice chamber in the tributary river channel; characterized in that: The steel pipe passing through the dam is connected to the lock chamber through a plain concrete connecting pier; the outer periphery of the steel pipe passing through the dam is integrally wrapped with a concrete layer of a certain thickness; a concrete cut-off ring is sleeved in the middle of the concrete layer.

2. The tubular culvert structure type as described in claim 1, characterized in that: The cross-section of the concrete layer wrapped outside the steel pipe passing through the dam is a square structure with missing corners, and chamfers are provided at the two right angles at the upper end of the square structure.

3. The tubular culvert structure type as described in claim 1, characterized in that: The cross-section of the cut-off ring is a square structure, and a through hole matching the outer side of the concrete layer is provided inside.

4. The tubular culvert structure type according to claim 1, characterized in that: A rigid waterproof wing ring is sleeved at the end of the steel pipe passing through the dam buried in the connecting pier.

5. The tubular culvert structure type according to claim 1, characterized in that: A waterstop is provided between the connecting pier and the reinforced concrete lock chamber, and a stitch-bonded geotextile is provided at the joint.

6. The tubular culvert structure type as described in claim 1 is characterized in that: There is a height difference of 15-20 cm between the steel pipe passing through the dam and the bottom inside the lock chamber.

7. The tubular culvert structure type as described in claim 1, characterized in that: The side piers of the lock chamber are not lower than the ground.

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