Outer wrapping well for continuous flow connection structure of double-hole water diversion box culvert

Abstract

The utility model discloses an outer wrapping well for a continuous flow connection structure of a double-hole water diversion box culvert, which is characterized in that an outer wrapping communication well is arranged at the joint of a new box culvert and an old box culvert, the outer wrapping communication well comprises a top plate, a bottom plate and vertical side walls, and the inside of the well is divided into a plurality of compartments; the vertical side wall comprises pre-cast concrete located on the lower portion and post-cast concrete located on the upper portion, a construction joint is arranged between the pre-cast concrete and the post-cast concrete, a steel plate water stop strip is adopted in the construction joint for water stop connection, the distance between the construction joint and the bottom plate and the distance between the construction joint and the top plate are not smaller than 400 mm, and a steel gate is arranged at the joint of the outer wrapping communication well and the new box culvert. According to the utility model, the original box culvert can be ensured to be uninterrupted in the whole construction process, the overall stability of the externally-wrapped communicating well is high, the externally-wrapped communicating well can be reserved and used as an overhaul well after the engineering is finished, no waste engineering is generated, and the resource cost is saved.

Description

Technical Field

[0001] The utility model relates to an outer casing well for a continuous - flow connection structure of a double - hole water - diversion culvert. Background Art

[0002] In municipal engineering, when the underground double - hole water - diversion culvert approaches its service life, it needs to face the problem of replacement. However, for some important water - diversion channels, due to their great impact on people's livelihood and social stability, it is impossible to cut off the water to form a dry - operation construction environment. Therefore, the replacement of such culverts faces the problem of construction in a wet environment. In addition, the water quality in the water - diversion culvert must be ensured not to be polluted. Dust, debris, etc. generated in conventional construction operations, if falling into the water, will cause water - quality disasters downstream. In the prior art, there are cases of using an outer casing well to connect new and old culverts and using a steel gate to control the water flow on - off. However, due to the complexity of the construction environment of the outer casing well, it is not easy to ensure the stability and safety of the steel gate during use. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an outer casing well for a continuous - flow connection structure of a double - hole water - diversion culvert, which can ensure the stability and safety of the steel gate during use.

[0004] The utility model solves the above - mentioned technical problem through the following technical scheme: an outer casing well for a continuous - flow connection structure of a double - hole water - diversion culvert. The double - hole water - diversion culvert includes a new culvert and an old culvert. It is characterized in that an outer - connected well is arranged at the connection of the new and old culverts. The outer - connected well includes a top plate, a bottom plate and vertical side walls. The well is divided into multiple compartments. A steel gate is arranged at the opening of the new culvert. Door - frame embedded parts are installed around the opening of the new culvert. The steel gate is installed on the door - frame embedded parts. Axle - guide frame embedded steel plates are arranged on the side walls of the upper compartment of the outer - connected well. Vertical holes are opened on the axle - guide frame embedded steel plates. Rubber damping belts are arranged in the vertical holes. The driving rod of the steel gate is located in the vertical holes and can move up and down along the vertical holes.

[0005] Further, the vertical side walls include pre - cast concrete at the lower part and post - cast concrete at the upper part. A construction joint is arranged between the pre - cast concrete and the post - cast concrete. A steel - plate water - stop is used for water - stop connection in the construction joint. The construction joint is filled with cement mortar. The position of the construction joint is not less than 400 mm away from both the bottom plate and the top plate.

[0006] Further, the old culvert includes the old culvert compartment 1 and the old culvert compartment 2, and the new culvert includes the new culvert compartment 1 and the new culvert compartment 2. The new culvert compartment 1 and the new culvert compartment 2 are both arranged on the side of the old culvert compartment 1, and the new culvert compartment 2 is arranged downstream of the new culvert compartment 1. The connection between the old culvert compartment 1 and the new culvert compartment 1 is the first partition of the external connection well, and the connection between the old culvert compartment 1 and the new culvert compartment 2 is the second partition of the external connection well. A steel gate is provided at the connection between the first partition of the external connection well and the new culvert compartment 1, and a steel gate is provided at the connection between the second partition of the external connection well and the new culvert compartment 2. Openings are provided at the corresponding positions between the old culvert compartment 1 and the first partition of the external connection well, so that the old culvert compartment 1 is connected to the new culvert compartment 1 through the first partition of the external connection well.

[0007] Further, two temporary steel gates are arranged in the old culvert compartment 1 at the downstream position of the first partition of the external connection well. The two temporary steel gates are respectively located upstream and downstream of the second partition of the external connection well. Two permanent sealing walls are arranged at the positions in the old culvert compartment 1 corresponding to the side walls of the second partition of the external connection well. Openings are provided at the corresponding positions of the old culvert compartment 1, the old culvert compartment 2 and the second partition of the external connection well to form a channel connecting the new culvert compartment 2 and the old culvert compartment 2. Two temporary steel gates are arranged in the old culvert compartment 2 downstream of the second partition of the external connection well, and a permanent sealing wall is arranged between the two temporary steel gates.

[0008] Further, the bottom and wall of the external connection well are connected to the old culvert by planting steel bars, and the new culvert is connected to the external connection well by planting steel bars. Holes are drilled at intervals on the bottom and wall of the old culvert, and then planting steel bar glue and stress-bearing steel bars are added into the holes, and the external connection well is poured to form an integral body with the planted steel bars. The diameter of the stress-bearing steel bars is 14 mm, and the adjacent holes are spaced 200 mm apart.

[0009] Further, inspection wells are provided in the first partition and the second partition of the external connection well, and covers and ladders are arranged in the inspection wells to facilitate the later maintenance and repair of the connection section between the new and old culverts.

[0010] Preferably, if the same grade of concrete material as the culvert is used for the external connection well, it can be retained in its original state after construction and become a part of the main structure, saving engineering materials and can also be used as an inspection well for later use.

[0011] The positive and progressive effects of the present utility model are as follows:

[0012] 1. By setting the embedded steel plate of the shaft guide frame, the present utility model provides support and fixation for the operation of the steel gate.

[0013] 2. The external connection well of the present utility model adopts the secondary pouring process, ensuring the construction quality and improving the overall stability and durability.

[0014] 3. The utility model ensures the water quality in the culvert during construction, reduces the time for water to directly contact construction waste such as construction dust, and minimizes water pollution as much as possible.

[0015] 4. The utility model ensures that the original culvert can keep flowing during the whole construction period, does not affect the downstream water supply operation, and guarantees the sustainability of people's livelihood and related industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a plan view of a preferred embodiment of the utility model.

[0017] Figure 2 It is a partial schematic view of the vertical side wall of the outsourcing well of the utility model.

[0018] Figure 3 It is an installation schematic view of the steel gate.

[0019] Figure 4 It is a structural schematic view of the first construction state of a specific embodiment of the utility model.

[0020] Figure 5 It is a structural schematic view of the second construction state of a specific embodiment of the utility model.

[0021] Figure 6 It is a structural schematic view of the third construction state of a specific embodiment of the utility model.

[0022] Figure 7 It is a structural schematic view of the fourth construction state of a specific embodiment of the utility model.

[0023] In the figure, it includes: outsourcing communication well 1, old culvert 1 compartment 2, old culvert 2 compartment 3, new culvert 1 compartment 4, new culvert 2 compartment 5, first compartment of the outsourcing communication well 6, second compartment of the outsourcing communication well 7, steel gate 8, opening 9, temporary steel gate 10, inspection well 11, permanent plugging wall 12, pre-cast concrete 13, post-cast concrete 14, steel plate water stop 15, steel gate 16, doorframe embedded part 17, shaft guide frame embedded steel plate 18. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] As Figures 1 to 3As shown in the figure, an outer casing well for the continuous - flow connection structure of a double - hole water - diversion culvert. The double - hole water - diversion culvert includes a new culvert and an old culvert. It is characterized in that an outer - connected well 1 is arranged at the connection of the new and old culverts. The outer - connected well 1 includes a top plate, a bottom plate and vertical side walls. The well is divided into multiple compartments. The vertical side walls include a first - cast concrete 13 at the lower part and a second - cast concrete 14 at the upper part. A construction joint is arranged between the first - cast concrete 13 and the second - cast concrete 14. A steel - plate waterstop 15 is used for water - stop connection in the construction joint. The position of the construction joint is not less than 400 mm from both the bottom plate and the top plate. A steel gate 16 is arranged at the entrance of the new culvert and is connected to the outer - connected well 1.

[0025] Due to the complexity of the construction environment of the outer casing well, it is very difficult to achieve the density and horizontal accuracy requirements of the standard equipment contact surface in one - time pouring of the vertical side walls of the outer casing well. In order to ensure the construction quality, improve the overall stability and durability, the vertical side walls of the outer casing well adopt a two - time pouring process, which is poured in 2 times. The lower part is the first - poured first - cast concrete 13, and the upper part is the second - poured second - cast concrete 14. A construction joint is formed between the first - cast concrete 13 and the second - cast concrete 14, and a steel - plate waterstop 15 is used for water - stop connection. First, the surface is chiseled rough and washed clean with high - pressure water (the concrete is kept moist), then a 100 - mm - thick 1:2 cement mortar is paved on the joint surface, and after half an hour, the concrete is continuously poured; the position of the construction joint is not less than 400 mm from the bottom - plate / top - plate surface.

[0026] The bottom of the outer - connected well 1, the well wall and the old culvert are connected by planting steel bars. The new culvert and the outer - connected well 1 are also connected by planting steel bars.

[0027] Door - frame embedded parts 17 are installed around the entrance of the new culvert. The steel gate 16 is installed on the door - frame embedded parts 17. By adjusting the height and angle of the outer - connected well 1, the precise positioning and alignment of the steel - gate door - frame can be achieved, ensuring the normal opening and closing and sealing of the door. An axial - guide - frame embedded steel plate 18 is arranged at the upper part of the outer - connected well 1. Vertical holes are opened on the axial - guide - frame embedded steel plate 18, and rubber damping belts are arranged in the vertical holes. The driving rod of the steel gate extends into the vertical holes and can move up and down along the vertical holes to drive the steel gate to open and close. The axial - guide - frame embedded steel plate 18 includes a vertical plate and a horizontal plate. The vertical plate is embedded in the outer - casing well wall, the horizontal plate is welded to the vertical plate, and the vertical holes are opened on the horizontal plate. The axial - guide - frame embedded steel plate 18 is used to provide support and fixing functions, ensuring the stability and safety of the temporary steel gate during use.

[0028] Specifically, as Figures 4 to 7As shown in the figure, the double-hole diversion box culvert includes the old box culvert warehouse 1 (1), the old box culvert warehouse 2 (3), the new box culvert warehouse 1 (4) and the new box culvert warehouse 2 (5). The new box culvert warehouse 1 (4) and the new box culvert warehouse 2 (5) are both arranged on the side of the old box culvert warehouse 1 (1), and the new box culvert warehouse 2 (5) is arranged downstream of the new box culvert warehouse 1 (4). The connection between the old box culvert warehouse 1 (1) and the new box culvert warehouse 1 (4) is the first compartment (6) of the externally wrapped connection well. The connection between the old box culvert warehouse and the new box culvert warehouse 2 is the second compartment (7) of the externally wrapped connection well. A steel gate (8) is arranged at the connection between the first compartment (6) of the externally wrapped connection well and the new box culvert warehouse 1. A steel gate (8) is arranged at the connection between the second compartment (7) of the externally wrapped connection well and the new box culvert warehouse 2. An opening (9) is arranged at the corresponding position between the old box culvert warehouse 1 and the first compartment (6) of the externally wrapped connection well, so that the old box culvert warehouse 1 is connected to the new box culvert warehouse 1 through the first compartment of the externally wrapped connection well.

[0029] Two temporary steel gates (10) are arranged in the old box culvert warehouse 1 at the downstream position of the first compartment of the externally wrapped connection well. The two temporary steel gates (10) are respectively located upstream and downstream of the second compartment (7) of the externally wrapped connection well. Two permanent sealing walls (12) are arranged at the position in the old box culvert warehouse 1 corresponding to the side wall of the second compartment of the externally wrapped connection well. Openings are arranged at the positions corresponding to the second compartment of the externally wrapped connection well in the old box culvert warehouse 1 and the old box culvert warehouse 2 to form a channel connecting the new box culvert warehouse 2 and the old box culvert warehouse 2. To reinforce the opening, a reinforced ring beam can be arranged at the opening and be provided with steel bars. The cross-section of the reinforced ring beam is 350mm * 350mm. Two temporary steel gates (10) are arranged in the old box culvert warehouse 2 downstream of the second compartment of the externally wrapped connection well, and a permanent sealing wall (12) is arranged between the two temporary steel gates.

[0030] Inspection wells (11) are arranged in the first compartment (6) of the externally wrapped connection well and the second compartment (7) of the externally wrapped connection well.

[0031] Before the construction of the temporary steel gate, steel pipe piles need to be installed first as guide rails, and then the steel gate is lowered. The gap between the steel gate and the top plate is temporarily sealed with an airbag.

[0032] Adjacent temporary steel gates in the same warehouse should maintain a certain distance and should meet the following requirements.

[0033] S = ≥T + 2.0 (steel gate water retaining structure)

[0034] In the formula: S - the net distance between adjacent water retaining structures (m);

[0035] T - the thickness of the permanent sealing wall (m).

[0036] The elevation of the bottom plate of the external well structure between the new box culvert warehouses 1 and 2 and the old box culvert warehouse 1 can be appropriately reduced, and it is ensured that the height difference between the bottom plates of the new and old box culverts on both sides is not less than 0.50m, so as to take into account the function of the sedimentation tank and improve the purity of the water body.

[0037] Next, according to the specific embodiments of the present invention, its construction steps are described.

[0038] First, asFigure 4 As shown, keep the water supply in Compartment 1 of the old culvert box 1, and slowly fill the first compartment 6 of the external connection well between Compartment 1 of the new culvert box 1 and Compartment 1 of the old culvert box until the water level is flush with that in Compartment 1 of the old culvert box. Openings 9 are made on the side wall of Compartment 1 of the old culvert box, and the underwater cutting process is used to open the steel gate of Compartment 1 of the new culvert box, enabling Compartment 1 of the new culvert box to have the condition for water passage.

[0039] As Figure 5 As shown, cut off part of the top plate structure of Compartment 1 of the old culvert box. Install two temporary steel gates 10 inside Compartment 1 of the old culvert box at the downstream position of the first compartment of the external connection well. After draining the water between the two temporary steel gates, construct two permanent sealing walls 12 at the positions corresponding to the side wall of the second compartment of the external connection well inside Compartment 1 of the old culvert box. After the two permanent sealing walls reach the design strength, fill the water between the two sealing walls until it is flush with the water level in the old culvert box, and at the same time, remove the two temporary steel gates.

[0040] As Figure 6 As shown, slowly fill the connecting channel between Compartment 2 of the new culvert box 5, Compartment 2 of the old culvert box and Compartment 1 of the new culvert box until the water level is flush with that in the old culvert box. Openings are made on the side walls of Compartment 1 and Compartment 2 of the old culvert box, and the underwater cutting process is used to minimize the damage range to the structure of the old culvert box. Open the steel gate of Compartment 2 of the new culvert box, enabling Compartment 2 of the new culvert box to have the condition for water passage.

[0041] As Figure 7 As shown, install two temporary steel gates 10 inside Compartment 2 of the old culvert box downstream of the second compartment of the external connection well. After draining the water between the two temporary steel gates, set up a permanent sealing wall 12 between the two temporary steel gates. After the permanent sealing wall reaches the design strength, remove the temporary steel gates.

[0042] Finally, restore all the cut - off top plate structures of the old culvert box and construct the upper structure of the new external connection well.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0044] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that this is only for illustration purposes. The protection scope of the present utility model is defined by the appended claims. Without departing from the principles and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. An outer casing well for a continuous flow connection structure of a double - hole water diversion culvert. The double - hole water diversion culvert includes a new culvert and an old culvert, and is characterized in that An external connecting well is arranged at the joint of the new and old culverts. The external connecting well includes a top plate, a bottom plate and vertical side walls. The well is divided into multiple compartments. A steel gate is arranged at the joint of the external connecting well and the new culvert. Door frame embedded parts are installed around the hole where the external connecting well is connected to the new culvert. The steel gate is installed on the door frame embedded parts. An axial guide frame embedded steel plate is arranged at the upper part of the external connecting well. Vertical holes are opened on the axial guide frame embedded steel plate. Rubber damping belts are arranged in the vertical holes. The driving rod of the steel gate is located in the vertical holes and can move up and down along the vertical holes.

2. The outer well for the non-stop connection structure of the double-hole water diversion culvert according to claim 1, characterized in that: The vertical side walls include pre-cast concrete at the lower part and post-cast concrete at the upper part. A construction joint is arranged between the pre-cast concrete and the post-cast concrete. A steel plate water stop is used for water stop connection in the construction joint. The construction joint is filled with cement mortar. The position of the construction joint is not less than 400 mm away from both the bottom plate and the top plate.

3. The external well for the continuous-flow connection structure of the double-hole water diversion culvert according to claim 1, wherein the old culvert includes old culvert compartment 1 and old culvert compartment 2, the new culvert includes new culvert compartment 1 and new culvert compartment 2. New culvert compartment 1 and new culvert compartment 2 are both arranged on the side of old culvert compartment 1, and new culvert compartment 2 is arranged downstream of new culvert compartment 1. The joint between old culvert compartment 1 and new culvert compartment 1 is the first compartment of the external connecting well. The joint between old culvert compartment 1 and new culvert compartment 2 is the second compartment of the external connecting well. A steel gate is arranged at the joint of the first compartment of the external connecting well and new culvert compartment 1. A steel gate is arranged at the joint of the second compartment of the external connecting well and new culvert compartment 2. An opening is arranged at the corresponding position of old culvert compartment 1 and the first compartment of the external connecting well so that old culvert compartment 1 is connected to new culvert compartment 1 through the first compartment of the external connecting well.

4. The outer casing well for the continuous - flow connection structure of the double - hole water diversion culvert according to claim 3, characterized in that: Two temporary steel gates are arranged in old culvert compartment 1 at the downstream position of the first compartment of the external connecting well. The two temporary steel gates are respectively located upstream and downstream of the second compartment of the external connecting well. Two permanent sealing walls are arranged at the position in old culvert compartment 1 corresponding to the side wall of the second compartment of the external connecting well. Openings are arranged at the corresponding positions of old culvert compartment 1, old culvert compartment 2 and the second compartment of the external connecting well to form a channel connecting new culvert compartment 2 and old culvert compartment 2. Two temporary steel gates are arranged in old culvert compartment 2 downstream of the second compartment of the external connecting well, and a permanent sealing wall is arranged between the two temporary steel gates.

5. The outer casing well for the continuous flow connection structure of the double-hole diversion culvert according to claim 4, characterized in that: Inspection wells are arranged in the first compartment and the second compartment of the external connecting well. Covers and ladders are arranged in the inspection wells.

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