A joint box for an underground flexible curtain and a method for constructing the same

Abstract

The present application relates to the technical field of underground engineering, and specifically discloses a joint box of an underground flexible curtain and a construction method thereof, comprising a plurality of joint boxes, a plurality of tool boxes, a plurality of stirrups and a plurality of longitudinal reinforcements, a plurality of drill holes are formed underground, the plurality of longitudinal reinforcements are uniformly and parallelly distributed, the plurality of stirrups are uniformly and parallelly distributed, the plurality of longitudinal reinforcements and the plurality of stirrups are perpendicular to each other, and the plurality of longitudinal reinforcements and the plurality of stirrups are welded to form a reinforcement cage; each reinforcement cage is located inside a drill hole, the inside of each reinforcement cage is provided with two joint boxes, the inside of each joint box is fixedly connected with a tool box, and one slot is formed in one side of each joint box. The present application has the advantages of simple construction, low cost, environmental friendliness and water stopping effect.

Description

Technical Field

[0001] The present invention relates to the technical field of underground engineering, and in particular to a joint box of an underground flexible curtain and a construction method thereof. Background Art

[0002] In civil engineering construction, groundwater control during foundation pit excavation is a critical issue. To prevent groundwater from impacting the foundation pit, surrounding buildings, and underground facilities, a water-stop curtain is often required. Existing water-stop curtain technologies primarily include bored piles, steel sheet piles, and underground diaphragm walls. However, these technologies have limitations and shortcomings.

[0003] While mixing pile technology offers rapid construction and relatively low costs, it can easily create weak spots and leaks during construction, resulting in poor water-blocking effectiveness. Furthermore, the relatively low strength and rigidity of mixing piles may not be able to withstand significant groundwater pressure, thus impacting the stability of the foundation pit. Steel sheet piles and underground diaphragm walls offer greater strength and rigidity, effectively blocking groundwater, but both methods carry significant construction costs.

[0004] The construction of steel sheet piles also requires large-scale piling equipment, which causes significant disturbance to the surrounding environment, generating noise and vibration. The construction of underground continuous walls requires a large amount of concrete, which increases the material cost of the project. In addition, a large amount of mud waste is generated during the construction process, causing environmental pollution. In addition, traditional water-stop curtain technology has high requirements for the construction site during the construction process, requiring a large working space and convenient logistics and transportation conditions, which are often difficult to meet in projects in densely populated urban areas. Existing water-stop curtain technology has shortcomings such as complex construction, high cost, large environmental impact, and limited construction conditions. Summary of the Invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a joint box for an underground flexible curtain and a construction method thereof, which can have the advantages of simple construction, low cost, environmental friendliness and water-stopping effect.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A joint box for an underground flexible curtain, comprising a plurality of joint boxes, a plurality of tool boxes, a plurality of stirrups and a plurality of longitudinal bars, a plurality of boreholes being drilled underground, the plurality of longitudinal bars being evenly distributed in parallel, the plurality of stirrups being evenly distributed in parallel, the plurality of longitudinal bars and the plurality of stirrups being perpendicular to each other, and the plurality of longitudinal bars and the plurality of stirrups being welded to form a steel cage;

[0008] Each of the steel cages is located inside the drilled hole, and two joint boxes are provided inside each of the steel cages. A tool box is fixedly connected to the inside of each of the joint boxes, and a slot is provided on one side of each of the joint boxes.

[0009] Furthermore, the positions of the two notches in the same steel cage are opposite.

[0010] Furthermore, concrete is provided between the inner side of the steel cage and the two joint boxes.

[0011] Furthermore, an end is provided on each side of the anti-seepage membrane.

[0012] Furthermore, a guide rod is provided on the outside of each end.

[0013] Furthermore, each of the guide rods is located inside a joint box, and both sides of each of the anti-seepage membranes are located in a slot.

[0014] Furthermore, a friction reducer is provided between the inner wall of each joint box and the outer surface of the tool box.

[0015] Furthermore, each of the joint boxes is a rectangular PVC component, and each of the tool boxes is a C-shaped structure.

[0016] Furthermore, a rope saw is provided at the lower end of each of the anti-seepage membranes, a winch is provided at both ends of each of the rope saws, each of the winches is fixedly connected to the platform, and both ends of each of the rope saws are located in one of the guide rods.

[0017] A construction method for a joint box of an underground flexible curtain comprises the following steps:

[0018] S1: drilling, excavating multiple boreholes;

[0019] S2: Lower the reinforcement cage consisting of longitudinal reinforcement and stirrups, apply friction reducer on the outer surface of the tool box, insert it into the body of the joint box, and then lower the whole thing to the center of the drill hole;

[0020] S3: pouring concrete in the gap between the drill hole and the tool box;

[0021] S4: In the tool box on one side of the joint box, lower the guide rod of the film planting machine, and the rope saw at the end of the guide rod cuts the soil into grooves;

[0022] S5: After the trough section is completed, the flexible anti-seepage membrane is lowered. End caps are provided at both ends of the anti-seepage membrane to prevent the anti-seepage membrane from detaching from the trough.

[0023] S6: After the anti-seepage membrane is put into place, remove the tool box and then pour the curing agent into the gap;

[0024] S7: Repeat this process to form a continuous water-stop curtain.

[0025] The beneficial effects of the present invention are:

[0026] (1) By setting up the joint box and the tool box, the technical effect that can be achieved is that two joint boxes are set up inside each steel cage, a tool box is fixedly connected to the inside of each joint box, and a slot is opened on one side of each joint box;

[0027] The use of joint boxes and tool boxes for construction eliminates the need for large-scale piling equipment, does not cause significant disturbance to the surrounding environment, reduces noise and vibration, reduces the use of concrete, reduces material costs for the project, and avoids pollution to the environment.

[0028] (2) By setting stirrups and longitudinal reinforcement, the technical effect that can be achieved is that multiple longitudinal reinforcements are evenly distributed in parallel, multiple stirrups are evenly distributed in parallel, multiple longitudinal reinforcements and multiple stirrups are perpendicular to each other, and multiple longitudinal reinforcements and multiple stirrups are welded to form a steel cage;

[0029] Stirrups and longitudinal reinforcement can increase the rigidity of cast-in-place concrete. The longitudinal reinforcement avoids the position of the notch. The size of the notch is suitable for the lowering of the flexible anti-seepage membrane, which facilitates the placement of the anti-seepage membrane. The anti-seepage membrane is used for waterproofing, increasing the water-stopping effect and reducing costs.

[0030] (3) By setting the tool box and the slot, the technical effect that can be achieved is that the positions of the two slots in the same steel cage are opposite. The joint box is a double-bin structure with the same size. Concrete is set on the inner side of the steel cage and between the two joint boxes;

[0031] The positions of the two notches in the same steel cage are opposite to each other, the two adjacent anti-seepage membranes are parallel to each other and are not located on the same horizontal plane, the requirements for the construction site are low, and the construction process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0033] Figure 1 A top sectional view of the present invention;

[0034] Figure 2 It is a partial top sectional view of the present invention;

[0035] Figure 3 A top sectional view of the joint box and the tool box of the present invention;

[0036] Figure 4 A perspective view of the anti-seepage membrane, guide rods, rope saw and winch in the present invention;

[0037] Figure 5 This is the first construction flow chart of the present invention;

[0038] Figure 6 This is the second construction flow chart of the present invention;

[0039] Description of main component symbols:

[0040] In the figure: 1. Joint box; 2. Tool box; 3. Notch; 4. Drill hole; 5. Concrete; 6. Stirrups; 7. Longitudinal reinforcement; 8. Anti-seepage membrane; 9. Guide rod; 10. Rope saw; 11. Winch; 12. End. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0044] Reference Figures 1 to 6, which is a joint box for an underground flexible curtain disclosed by the present invention, includes multiple joint boxes 1, multiple tool boxes 2, multiple stirrups 6 and multiple longitudinal reinforcements 7, multiple drill holes 4 are opened underground, multiple longitudinal reinforcements 7 are evenly distributed in parallel, multiple stirrups 6 are evenly distributed in parallel, multiple longitudinal reinforcements 7 and multiple stirrups 6 are perpendicular to each other, and multiple longitudinal reinforcements 7 and multiple stirrups 6 are welded to form a steel cage.

[0045] The stirrups 6 and longitudinal bars 7 can increase the rigidity of the cast-in-place concrete 5. The longitudinal bars 7 avoid the position of the notch 3. The size of the notch 3 is suitable for the lowering of the flexible anti-seepage membrane 8, which facilitates the placement of the anti-seepage membrane 8. The anti-seepage membrane 8 is used for waterproofing, increasing the water-stopping effect, and reducing costs.

[0046] Each steel cage is located inside the drill hole 4, and two joint boxes 1 are provided inside each steel cage. A tool box 2 is fixedly connected to the inside of each joint box 1. A slot 3 is opened on one side of each joint box 1, and the longitudinal reinforcement 7 avoids the position of the slot 3. The size of the slot 3 is suitable for the lowering of the flexible anti-seepage membrane 8. The internal space of the tool box 2 is suitable for the lowering of the guide rod 9 of the slotting and film planting machine.

[0047] The use of the joint box 1 and the tool box 2 for construction eliminates the need for large-scale piling equipment, does not cause significant disturbance to the surrounding environment, reduces noise and vibration, reduces the use of concrete 5, reduces material costs for the project, and avoids pollution to the environment.

[0048] The positions of the two notches 3 in the same steel cage are opposite. The joint box 1 is a double-bin structure with the same size.

[0049] Concrete 5 is provided between the inner side of the steel cage and the two joint boxes 1 in order to increase the rigidity of the cast-in-place concrete 5 .

[0050] Both sides of the anti-seepage membrane 8 are respectively provided with an end head 12. The outside of each end head 12 is provided with a guide rod 9.

[0051] The positions of the two notches 3 in the same steel cage are opposite to each other, and the two adjacent anti-seepage membranes 8 are parallel to each other and are not located on the same horizontal plane. The requirements for the construction site are low and the construction process is simple.

[0052] Each guide rod 9 is located inside a joint box 1 , and both sides of each anti-seepage membrane 8 are located in a slot 3 .

[0053] A friction reducer is provided between the inner wall of each joint box 1 and the outer surface of the tool box 2 , and the friction reducer is used to reduce the frictional resistance between the joint box 1 and the tool box 2 .

[0054] Each joint box 1 is a rectangular PVC member, and each tool box 2 is a C-shaped structure.

[0055] A rope saw 10 is provided at the lower end of each anti-seepage membrane 8 , and a winch 11 is provided at both ends of each rope saw 10 . Each winch 11 is fixedly connected to the platform, and both ends of each rope saw 10 are located in a guide rod 9 .

[0056] A construction method for a joint box of an underground flexible curtain comprises the following steps:

[0057] S1: drilling, excavating multiple boreholes 4;

[0058] S2: Lower the steel cage consisting of longitudinal bars 7 and stirrups 6, apply friction reducer on the outer surface of the tool box 2, insert it into the body of the joint box 1, and then lower the whole thing to the center of the drill hole 4;

[0059] S3: pouring concrete 5 in the gap between the drill hole 4 and the tool box 2;

[0060] S4: In the tool box 2 positioned on one side of the joint box 1, the film planting machine guide rod 9 is lowered, and the rope saw 10 at the end of the guide rod 9 cuts the soil into a groove;

[0061] S5: After the trough section is completed, the flexible anti-seepage membrane 8 is lowered. End caps 12 are provided at both ends of the anti-seepage membrane 8 to prevent the anti-seepage membrane 8 from detaching from the notch 3;

[0062] S6: After the anti-seepage membrane 8 is put into place, the tool box 2 is removed, and then the curing agent is poured into the gap;

[0063] S7: Repeat this process to form a continuous water-stop curtain.

[0064] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A construction method for a joint box of an underground flexible curtain, characterized by: The invention comprises a plurality of joint boxes (1), a plurality of tool boxes (2), a plurality of stirrups (6) and a plurality of longitudinal bars (7); a plurality of boreholes (4) are opened underground; the plurality of longitudinal bars (7) are evenly distributed in parallel; the plurality of stirrups (6) are evenly distributed in parallel; the plurality of longitudinal bars (7) and the plurality of stirrups (6) are perpendicular to each other; the plurality of longitudinal bars (7) and the plurality of stirrups (6) are welded to form a steel cage; Each of the steel cages is located inside the drill hole (4), two joint boxes (1) are provided inside each of the steel cages, a tool box (2) is fixedly connected to the inside of each of the joint boxes (1), and a notch (3) is provided on one side of each of the joint boxes (1); The following steps are involved: S1: drilling, excavating multiple boreholes (4); S2: Lower the steel cage consisting of longitudinal bars (7) and stirrups (6), apply friction reducer on the outer surface of the tool box (2), insert it into the chamber of the joint box (1), and then lower the whole thing to the center of the drill hole (4); S3: pouring concrete (5) in the gap between the drill hole (4) and the tool box (2); S4: In the tool box (2) positioned on one side of the joint box (1), the film planting machine guide rod (9) is lowered, and the rope saw (10) at the end of the guide rod (9) cuts the soil into grooves; S5: After the trough section is completed, the flexible anti-seepage membrane (8) is lowered. Ends (12) are distributed at both ends of the anti-seepage membrane (8) to prevent the anti-seepage membrane (8) from detaching from the notch (3); S6: After the anti-seepage membrane (8) is lowered into place, the tool box (2) is removed, and then a curing agent is poured into the gap; S7: Repeat this process to form a continuous water-stop curtain.

2. The construction method of a joint box for an underground flexible curtain according to claim 1, characterized in that: The positions of the two notches (3) in the same steel cage are opposite to each other.

3. The construction method of a joint box for an underground flexible curtain according to claim 1, characterized in that: Concrete (5) is provided between the inner side of the steel cage and the two joint boxes (1).

4. The construction method of a joint box for an underground flexible curtain according to claim 1, characterized in that: An end head (12) is respectively provided on both sides of the anti-seepage membrane (8).

5. The construction method of a joint box for an underground flexible curtain according to claim 4, characterized in that: A guide rod (9) is provided on the outside of each end head (12).

6. The construction method of a joint box for an underground flexible curtain according to claim 5, characterized in that: Each guide rod (9) is located inside a joint box (1), and both sides of each anti-seepage membrane (8) are located in a slot (3).

7. The construction method of a joint box for an underground flexible curtain according to claim 1, characterized in that: A friction reducer is provided between the inner wall of each joint box (1) and the outer surface of the tool box (2).

8. The construction method of a joint box for an underground flexible curtain according to claim 1, characterized in that: Each of the joint boxes (1) is a PVC component with a rectangular structure, and each of the tool boxes (2) is a C-shaped structure.

9. The construction method of a joint box for an underground flexible curtain according to claim 7, characterized in that: A rope saw (10) is provided at the lower end of each of the anti-seepage membranes (8), a winch (11) is provided at both ends of each of the rope saws (10), each of the winches (11) is fixedly connected to the platform, and both ends of each of the rope saws (10) are located in one of the guide rods (9).

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