Continuous flow guide structure of pressure flow box culvert

Abstract

The utility model relates to a kind of pressure flow box culvert unceasing flow guide structure, including pressure flow box culvert main structure, the upper portion both sides of pressure flow box culvert main structure are respectively communicated with the guide well shaft that is provided, two guide well shafts are communicated by guide steel pipe, ring frame beam is set between top plate and corresponding guide well shaft, guide well shaft and top plate are connected into whole by ring frame beam and pouring concrete between, the inside of pressure flow box culvert main structure is located between the guide well shaft of two sides and is spaced apart and is provided with two-face brick wall.The utility model is between two guide well shafts and the guide steel pipe, and cooperate the brick wall between the guide well shaft of two sides in the inside of pressure flow box culvert main structure, so it can realize unceasing flow when reconstructing construction to pressure flow box culvert, realize upper and lower double communication passage, the brick wall under water in pressure flow box culvert main structure blocks lower communication passage, realize the premise of unceasing flow, partial breaking and renewal reconstruction of box culvert, simple structure, convenient construction.

Description

Technical Field

[0001] This utility model relates to the field of municipal culvert engineering technology, and in particular to a pressure flow box culvert continuous flow guiding structure. Background Technology

[0002] Currently, due to engineering needs, existing pressure flow box culverts often require rerouting to make way for more important underground pipelines or structures, or they may need to have additional functional wells or connect to new culverts. Many projects require the demolition and reconstruction of existing box culverts. However, because pressure flow box culverts have large flow rates, the impact of flow interruption construction is widespread, making many projects impossible to implement. In actual engineering, pressure flow pipelines often use airbag sealing and drainage through adjacent manholes. However, pressure flow box culverts have large cross-sections, and sealing airbags require special designs with low success rates. Drainage through adjacent manholes requires multiple pumps in smaller manholes, making implementation difficult. Therefore, traditional diversion methods are not suitable for pressure flow box culverts. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a pressure flow culvert continuous flow guiding structure to address the shortcomings of the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A pressure flow box culvert continuous flow guiding structure includes a pressure flow box culvert main structure. A flow guiding well is respectively connected to both sides of the upper part of the pressure flow box culvert main structure. The two flow guiding wells are connected by a flow guiding steel pipe. A ring frame beam is provided between the top plate of the pressure flow box culvert main structure and the corresponding flow guiding well. The flow guiding well and the top plate are connected as a whole by the ring frame beam and poured concrete. Inside the pressure flow box culvert main structure, two brick walls for blocking the flow are provided at intervals between the flow guiding wells on both sides. The part between the two brick walls on the pressure flow box culvert main structure is a demolition structure.

[0005] The beneficial effects of this utility model are as follows: The pressure flow box culvert continuous flow guiding structure of this utility model, by connecting and setting flow guiding wells on both sides of the upper part of the main structure of the pressure flow box culvert, and the flow guiding steel pipe between the two flow guiding wells, and cooperating with the brick wall located between the two flow guiding wells inside the main structure of the pressure flow box culvert, can achieve continuous flow during the reconstruction of the pressure flow box culvert, realizing the dual connection between the upper and lower parts. The underwater brick wall inside the main structure of the pressure flow box culvert blocks the lower connection, realizing the partial demolition and reconstruction of the box culvert without interrupting the flow. The structure is simple and the construction is convenient.

[0006] Based on the above technical solution, the present invention can be further improved as follows:

[0007] Furthermore, a waterproof sleeve is pre-embedded in the side wall of the diversion well that communicates with the diversion steel pipe, and one end of the diversion steel pipe is sealed to the corresponding waterproof sleeve.

[0008] The beneficial effect of the above-mentioned further solution is that by setting the waterproof sleeve, the two ends of the guide steel pipe can be sealed and connected to the corresponding waterproof sleeve, thereby further enhancing the waterproof effect.

[0009] Furthermore, the waterproof sleeve is a flexible waterproof sleeve.

[0010] The beneficial effects of the above-mentioned further solutions are: using flexible waterproof sleeves can facilitate the sealing connection between the two during actual construction, and can also improve the sealing performance of the connection between the two.

[0011] Furthermore, at least one support is provided on the top plate between the two diversion wells, and the upper end of the support abuts against and supports the diversion steel pipe.

[0012] The beneficial effect of the above-mentioned further solution is that by setting the support pier, the guide steel pipe can be supported, ensuring the stress stability of the guide steel pipe, and thus ensuring the stability of the connection between the two guide wells.

[0013] Furthermore, the piers are made of plain concrete, brick, or steel.

[0014] Further: Side wall steel bars are pre-embedded in the side wall of the main structure of the pressure flow box culvert. Part of the structure is removed from the top plate at the position corresponding to the diversion well to form a through hole for connecting the main structure of the pressure flow box culvert and the corresponding diversion well. The side wall steel bars are bent and anchored into the ring frame beam.

[0015] The beneficial effects of the above-mentioned further solution are as follows: by chiseling away part of the structure on the top plate at the position corresponding to the diversion well and forming a through hole, it is possible to facilitate the connection between the main structure of the pressure flow box culvert and the corresponding diversion well, and form an upper connecting channel. At the same time, by bending the side wall steel bars and anchoring them into the ring frame beam, it is possible to ensure that the stress state of the side wall of the main structure of the pressure flow box culvert is basically consistent with the existing design state, and avoid stress damage to the un-chiseled part of the main structure of the pressure flow box culvert or the need for additional reinforcement measures.

[0016] Further: The side wall reinforcement bars and the vertical reinforcement bars of the diversion well shaft anchored into the ring frame beam are welded on both sides, and the welding length is not less than 5 times the diameter of the reinforcement bars.

[0017] The beneficial effects of the above-mentioned further solution are: by welding the side wall steel bars and the steel bars in the diversion shaft to the vertical steel bars of the ring frame beam on both sides, the stability of the connection between the diversion shaft and the main structure of the pressure flow box culvert can be guaranteed, and it is also conducive to the overall uniform stress distribution.

[0018] Furthermore, a waterstop strip is provided between the ring frame beam and the top plate.

[0019] The beneficial effect of the above-mentioned further solution is that by setting the waterstop strip, the leakage channel can be blocked after a seepage channel appears between the ring frame beam and the top plate, thereby further enhancing the waterproof effect.

[0020] Furthermore, the waterstop strip is a water-swellable waterstop strip.

[0021] The beneficial effects of the above-mentioned further solutions are: by using water-swellable sealing strips, on the one hand, the materials are readily available and inexpensive, and on the other hand, the sealing effect is better when the flow encounters water.

[0022] Further: After the bottom surface of the main structure of the pressure flow box culvert is roughened, it is bonded to the joint surface of the ring frame beam with an interface agent.

[0023] The beneficial effect of the above-mentioned further solution is that by roughening the bottom surface of the main structure of the pressure flow box culvert and bonding it to the joint surface of the ring frame beam with an interface agent, it can be ensured that the connection between the two is fully bonded and the risk of leakage is small. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the planar structure of a pressure flow culvert continuous flow guiding structure according to an embodiment of the present invention;

[0025] Figure 2 This utility model Figure 1 A schematic diagram of the AA cross-sectional structure;

[0026] Figure 3 This utility model Figure 1 A schematic diagram of the BB cross-sectional structure;

[0027] Figure 4 This is a schematic diagram of the structure of the side wall reinforcement anchored into the ring frame beam according to an embodiment of the present invention.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Main structure of pressure flow box culvert; 2. Top slab; 3. Ring frame beam; 4. Waterstop strip; 5. Diversion shaft; 6. Waterproof sleeve; 7. Diversion steel pipe; 8. Brick wall; 9. Side wall reinforcement; 10. Support pier; 11. Demolition structure. Detailed Implementation

[0030] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0031] like Figures 1 to 3 As shown, a pressure flow box culvert continuous flow guiding structure includes a pressure flow box culvert main structure 1. Two flow guiding wells 5 are respectively connected to the upper two sides of the pressure flow box culvert main structure 1. The two flow guiding wells 5 are connected by a flow guiding steel pipe 7. A ring frame beam 3 is provided between the top plate 2 of the pressure flow box culvert main structure 1 and the corresponding flow guiding well 5. The flow guiding well 5 and the top plate 2 are connected as a whole by the ring frame beam 3 and poured concrete. Inside the pressure flow box culvert main structure 1, two brick walls 8 for blocking the flow are provided at intervals between the two flow guiding wells 5 on both sides. The part between the two brick walls 8 on the pressure flow box culvert main structure 1 is a demolition structure 11.

[0032] This utility model relates to a pressure flow box culvert continuous flow guiding structure. This structure consists of guiding wells 5 connected to both sides of the upper part of the main body structure 1 of the pressure flow box culvert, and a guiding steel pipe 7 between the two guiding wells 5. Combined with a brick wall 8 located inside the main body structure 1 between the two guiding wells 5, this structure allows for continuous flow during the reconstruction of the pressure flow box culvert, creating a dual-channel connection between the upper and lower parts. The underwater brick wall 8 inside the main body structure 1 blocks the lower connecting channel, enabling partial demolition and reconstruction of the box culvert without interrupting flow. The structure is simple and easy to construct.

[0033] In one or more embodiments of this utility model, two diversion wells 5 are symmetrically distributed on the upper part of the main structure 1 of the pressure flow box culvert, ensuring the overall stress balance of the main structure 1 of the pressure flow box culvert. The wall thickness and reinforcement of the diversion wells 5 meet the stress requirements of both the water pressure inside the diversion wells 5 and the water-soil lateral pressure of the diversion wells 5. The height of the diversion wells 5 is not lower than the highest water level of the diversion wells 5 of the main structure 1 of the pressure flow box culvert. During diversion, the water level of the diversion wells 5 is higher than that of the diversion steel pipe 7.

[0034] In one or more embodiments of this utility model, a waterproof sleeve 6 is pre-embedded in the side wall of the diversion well 5 that communicates with the diversion steel pipe 7, and one end of the diversion steel pipe 7 is sealed to the corresponding waterproof sleeve 6. By setting the waterproof sleeve 6, both ends of the diversion steel pipe 7 can be sealed to the corresponding waterproof sleeve 6, further enhancing the waterproof effect.

[0035] Preferably, in one or more embodiments of this utility model, the waterproof sleeve 6 is a flexible waterproof sleeve. Using a flexible waterproof sleeve (Type A, Type B) facilitates sealing the connection between the two during actual construction and improves the sealing performance of the connection.

[0036] In one or more embodiments of this utility model, at least one support 10 is provided on the top plate 2 between the two diversion wells 5. The upper end of the support 10 abuts against and supports the diversion steel pipe 7. By providing the support 10, the diversion steel pipe 7 can be supported, ensuring the stress stability of the diversion steel pipe 7, and thus ensuring the stability of the connection between the two diversion wells 7.

[0037] Preferably, in one or more embodiments of the present invention, the support 10 is made of plain concrete, brick or steel.

[0038] In one or more embodiments of this utility model, side wall steel bars 9 are pre-embedded in the side wall of the main structure 1 of the pressure flow box culvert. A portion of the structure is removed from the top plate 2 at the position corresponding to the diversion shaft 5 to form a through hole for connecting the main structure 1 of the pressure flow box culvert and the corresponding diversion shaft 5. The side wall steel bars 9 are bent and anchored into the ring frame beam 3, as shown below. Figure 4 As shown. By chiseling away part of the structure on the top plate 2 at the position corresponding to the diversion shaft 5 and forming a through hole, it is possible to facilitate the connection between the main structure 1 of the pressure flow box culvert and the corresponding diversion shaft 5, forming an upper connecting channel. At the same time, the side wall steel bars 9 are bent and anchored into the ring frame beam 3. This ensures that the stress state of the side wall of the main structure 1 of the pressure flow box culvert is basically consistent with the existing design state, avoiding stress damage to the un-chiseled part of the main structure 1 of the pressure flow box culvert or requiring additional reinforcement measures.

[0039] In practice, when removing the top plate 2 of the main structure 1 of the pressure flow box culvert, holes with a diameter of 100mm need to be pre-drilled at the four corners. A wire saw is then blindly threaded under the plate, and the wire saw is used on the ground to cut off part of the top plate 2 of the main structure 1 of the pressure flow box culvert. During the operation, water inside the main structure 1 of the pressure flow box culvert flows into the diversion well 5 through the through hole and can be temporarily discharged through the reserved drainage hole on the diversion steel pipe 7. The reserved drainage hole on the diversion steel pipe 7 is sealed with a flange blind plate after the top plate 2 of the main structure 1 of the pressure flow box culvert is removed and before the upper diversion steel pipe 7 is connected.

[0040] In the embodiments of this utility model, the wall thickness of the guide steel pipe 7 should meet the requirements of spanning the pier under full water conditions. The diameter and wall thickness of the guide steel pipe are selected according to the pier spacing with reference to the national building standard design atlas 07MS101-3 "Self-supporting straight overhead steel pipe".

[0041] In one or more embodiments of this utility model, the side wall reinforcement 9 and the diversion shaft 5 are anchored to the vertical reinforcement of the ring frame beam 3 and welded on both sides, with a welding length of not less than 5 times the diameter of the reinforcement. By welding the side wall reinforcement 9 and the reinforcement in the diversion shaft 5 to the vertical reinforcement of the ring frame beam 3 on both sides, the stability of the connection between the diversion shaft 5 and the main structure 1 of the pressure flow box culvert can be ensured, and it is also beneficial to uniform stress distribution.

[0042] In practice, the surface layer of the top plate 3 is partially removed, and then the bent steel bars are straightened and welded to the vertical steel bars of the diversion well 5 anchored in the ring frame beam 3 on both sides.

[0043] In this embodiment of the present invention, the cross-sectional dimensions of the ring frame beam 3 are B×H=450mmx300mm, which meets the requirements for supporting the diversion well 5 and the main structure 1 of the pressure flow box culvert.

[0044] In one or more embodiments of this utility model, a waterstop strip 4 is provided between the ring frame beam 3 and the top plate 2. By providing the waterstop strip 4, leakage channels can be blocked after a seepage channel appears between the ring frame beam 3 and the top plate 2, thereby further enhancing the waterproof effect.

[0045] Preferably, in one or more embodiments of this utility model, the water-stop strip 4 is a water-swellable water-stop strip. By using a water-swellable water-stop strip, on the one hand, the material is readily available and inexpensive, and on the other hand, the sealing effect is better when the guide encounters water.

[0046] In one or more embodiments of this utility model, the bottom surface of the pressure flow box culvert main structure 1 is roughened and then bonded to the joint surface of the ring frame beam 3 using an interface agent. By roughening the bottom surface of the pressure flow box culvert main structure 1 and bonding it to the joint surface of the ring frame beam 3 using an interface agent, a full bond at the connection point can be ensured, reducing the risk of leakage.

[0047] In one or more embodiments of this utility model, the internal net dimensions of the main structure 1 of the pressure flow box culvert are 2.6m x 2.0m, the underwater brick wall 8 is made of MU25 concrete ordinary brick blocks, the strength of cement mortar should not be less than M10 before the masonry is subjected to water pressure, and the thickness of the masonry sealing wall is not less than 1.5m.

[0048] During construction, the water flow velocity inside the main structure 1 of the pressure flow box culvert was too fast, making it difficult to construct the underwater brick wall 8. Therefore, a diversion well was added between the diversion wells 8. The method of breaking the top plate of the box culvert structure inside the diversion well was the same as the method of chiseling the top plate 2 of the main structure 1 of the pressure flow box culvert. Sandbags were thrown into the diversion well to partially block the water flow, reduce the water flow velocity, and ensure that the underwater construction of the sealing brick wall 8 was feasible.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-continuous flow deflecting structure for a pressure flow box culvert, characterized by: The pressure flow box culvert includes a main structure (1), with a flow guide shaft (5) connected to both sides of the upper part of the main structure (1). The two flow guide shafts (5) are connected by a flow guide steel pipe (7). A ring frame beam (3) is provided between the top plate (2) of the main structure (1) and the corresponding flow guide shaft (5). The flow guide shaft (5) and the top plate (2) are connected as a whole by the ring frame beam (3) and concrete is poured. Inside the main structure (1), two brick walls (8) for blocking the flow are provided between the flow guide shafts (5) on both sides. The part between the two brick walls (8) on the main structure (1) is a demolition structure (11).

2. The pressure flow box culvert unbroken flow deflecting structure according to claim 1, wherein: A waterproof sleeve (6) is pre-embedded in the side wall of the diversion well (5) that is connected to the diversion steel pipe (7), and one end of the diversion steel pipe (7) is sealed to the corresponding waterproof sleeve (6).

3. The pressure flow box culvert unbroken flow deflecting structure of claim 2, wherein: The waterproof sleeve (6) is a flexible waterproof sleeve.

4. The pressure flow box culvert unbroken flow deflecting structure of claim 1, wherein: At least one support (10) is provided on the top plate (2) between the two diversion wells (5), and the upper end of the support (10) abuts against and supports the diversion steel pipe (7).

5. The pressure flow box culvert unbroken flow deflecting structure according to claim 4, wherein: The pier (10) is made of plain concrete, brick or steel.

6. The pressure flow box culvert unbroken flow deflecting structure according to claim 1, wherein: The pressure flow box culvert main structure (1) has side wall steel bars (9) embedded in its side wall. The top plate (2) is partially removed at the position corresponding to the diversion well (5) to form a through hole for connecting the pressure flow box culvert main structure (1) and the corresponding diversion well (5). The side wall steel bars (9) are bent and anchored into the ring frame beam (3).

7. The pressure flow box culvert unbroken flow deflecting structure of claim 6, wherein: The side wall reinforcement (9) and the diversion shaft (5) are anchored into the vertical reinforcement of the ring frame beam (3) and welded on both sides, with the welding length not less than 5 times the diameter of the reinforcement.

8. The pressure flow box culvert unbroken flow deflecting structure according to claim 6, wherein: A waterstop strip (4) is provided between the ring beam (3) and the top plate (2).

9. The pressure flow box culvert unbroken flow deflecting structure of claim 8, wherein: The waterstop strip (4) is a water-swellable waterstop strip.

10. The pressure flow box constant flow deflector structure according to any one of claims 1-9, wherein: After the bottom surface of the main structure (1) of the pressure flow box culvert is roughened, it is bonded to the joint surface of the ring frame beam (3) with an interface agent.

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