A waterproof deep foundation pit dewatering well structure

Abstract

This application relates to a waterproof deep foundation pit dewatering well structure, belonging to the technical field of building construction. It includes a dewatering well pipe, with a waterproof sleeve fitted over its outer surface. A fixing ring is fixedly connected to the inner wall of the waterproof sleeve. This application utilizes components such as a fixing ring, a polyurethane elastomer, and a top ring. The fixing ring, installed on the inner wall of the waterproof sleeve, secures the polyurethane elastomer. When the dewatering well pipe and the waterproof sleeve are fitted together, the waterproof sleeve is positioned via a positioning groove and a positioning strip. At this time, the top ring abuts against the polyurethane elastomer. As the waterproof sleeve descends, the polyurethane elastomer is compressed and expanded under the pressure of the top ring. This allows the dewatering well pipe and the waterproof sleeve to seal against each other through the expanded polyurethane elastomer, effectively filling the gaps and minor unevenness between them, preventing groundwater seepage, and improving waterproofing performance.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a waterproof deep foundation pit dewatering well structure. Background Technology

[0002] Deep foundation pits are increasingly used in housing construction and municipal engineering projects in my country. Well dewatering is an important condition to ensure the safety of deep foundation pit excavation. Large-diameter well dewatering can generally only be closed after the structural construction is completed and meets the anti-buoyancy requirements.

[0003] An existing patent (publication number: CN221760708U) discloses a waterproof structure for a deep foundation pit dewatering well, including a structural base plate, a dewatering well pipe installed within the structural base plate, and a waterproof sleeve. A water-stop ring is welded to the outer wall of the middle section of the waterproof sleeve. The lower part of the waterproof sleeve is fitted onto the dewatering well pipe, with the bottom end of the waterproof sleeve 2cm higher than the structural base plate. A waterproof coating is applied to the lower outer wall of the waterproof sleeve, extending to the upper surface of the structural base plate to form a 20cm square. A water-swellable sealing adhesive is applied to the water-stop ring. This invention significantly reduces leakage at the dewatering well, greatly reducing the cost of sealing the well and saving manpower, material resources, and financial resources.

[0004] However, in the above-mentioned scheme, it was found that after the dewatering well pipe and the waterproof casing are connected, although a waterproof coating is applied to the outside, it is difficult to completely and evenly cover the surface of the waterproof casing and the dewatering well pipe during the construction process. There may be problems such as inconsistent coating thickness and local missed coating. In addition, the connection between the dewatering well pipe and the waterproof casing lacks sealing, resulting in insufficient waterproof performance. Utility Model Content

[0005] The purpose of this application is to provide a waterproof deep foundation pit dewatering well structure, which has the advantages of effectively filling the gaps and minor unevenness between the dewatering well pipe and the waterproof casing by using polyurethane elastomer that expands under pressure, preventing groundwater seepage, and improving waterproof performance, thus solving the problems mentioned in the background art.

[0006] The waterproof deep foundation pit dewatering well structure provided in this application adopts the following technical solution: it includes a dewatering well pipe, the outer surface of which is fitted with a waterproof sleeve, a fixing ring is fixedly connected to the inner wall of the waterproof sleeve, a polyurethane elastomer is fixedly connected to the bottom surface of the fixing ring, a top ring is fixedly connected to the top of the dewatering well pipe, the upper surface of the top ring abuts against the bottom surface of the polyurethane elastomer, positioning strips arranged at equal intervals are fixedly connected to the outer surface of the dewatering well pipe, and positioning grooves arranged at equal intervals are opened on the inner wall of the waterproof sleeve, the inner wall of each positioning groove is slidably connected to the outer surface of the corresponding positioning strip.

[0007] By adopting the above technical solution, a waterproof sleeve is fitted onto the outer surface of the dewatering well pipe, allowing the waterproof sleeve to fit snugly against the pipe and thus limiting its position. A fixing ring is installed on the inner wall of the waterproof sleeve for a fixed connection. A polyurethane elastomer, possessing high elasticity, good wear resistance, and oil resistance, is placed at the bottom of the fixing ring. A top ring is installed on the upper surface of the dewatering well pipe and fixed to its top. A positioning groove is formed on the inner wall of the waterproof sleeve for positioning. A positioning strip is installed on the outer surface of the dewatering well pipe to maintain its position. The positioning strip is used to fix the dewatering well pipe and the waterproof casing. First, the positioning groove and the positioning strip are slidably connected, allowing the waterproof casing to be positioned and installed on the surface of the dewatering well pipe. At this time, the top ring abuts against the polyurethane elastomer. As the waterproof casing descends and the fixing ring positions the polyurethane elastomer, the polyurethane elastomer is compressed and expanded under the pressure of the top ring. After the dewatering well pipe and the waterproof casing are connected, the polyurethane elastomer, which expands under pressure, can seal the connection. This allows the polyurethane elastomer to effectively fill the gaps and minor unevenness between the dewatering well pipe and the waterproof casing, preventing groundwater seepage and improving the waterproof performance.

[0008] Preferably, the outer surface of the dewatering well pipe is provided with a structural base plate, and the outer surface of the waterproof sleeve is coated with a waterproof coating that extends to the upper surface of the structural base plate.

[0009] By adopting the above technical solution, the structural base plate is set on the outer surface of the dewatering well pipe, and a waterproof coating is set on the outer surface of the waterproof sleeve. The waterproof coating extends to the surface of the structural base plate, so that the waterproof coating can wrap between the waterproof sleeve and the structural base plate, and initially waterproof the connection between the waterproof sleeve and the dewatering well pipe.

[0010] Preferably, the waterproof sleeve is provided with two clamp assemblies on its outer side.

[0011] By adopting the above technical solution, two sets of clamping components are set on the outside of the waterproof casing. The clamping components are located at the joint between the dewatering well pipe and the waterproof casing. The clamping of the two sets of clamping components can ensure the connection stability between the dewatering well pipe and the waterproof casing, prevent the dewatering well pipe and the waterproof casing from tilting and collapsing, and thus prevent the waterproof coating from being torn.

[0012] Preferably, each clamp assembly includes two clamping rings and two bolts, and each clamping ring has a connecting part fixedly connected to both ends.

[0013] By adopting the above technical solution, each clamp assembly includes two clamping rings and two bolts. The clamping rings can be adapted to the waterproof sleeve and fit against the surface of the waterproof sleeve. A connecting part is provided at both ends of each clamping ring, and the surface of the connecting part has a mounting hole.

[0014] Preferably, each bolt passes through the corresponding connecting portion, and each bolt has a nut threaded onto its outer surface.

[0015] By adopting the above technical solution, the bolts are passed through the corresponding connecting parts, allowing the bolts to pass through the mounting holes on the surface of the corresponding connecting parts, thus achieving the connection between the two connecting parts. This enables the corresponding clamping rings to be assembled. Nuts are set to connect with the corresponding bolts, so that the clamping rings and connecting parts can be tightened under the action of the bolts and nuts. Furthermore, the two sets of clamping components are installed at an angle, which can improve the stability after the dewatering well pipe and the waterproof casing are connected, prevent the dewatering well pipe and the waterproof casing from tilting and collapsing, and thus prevent the waterproof coating from being torn.

[0016] Preferably, each of the clamping rings has equidistant protrusions fixedly connected to its inner wall.

[0017] By adopting the above technical solution, the protrusions are set on the inner wall of the clamping ring. After the clamping ring is installed, the protrusions fit against the waterproof sleeve. Through the continuous clamping of the clamping ring, the protrusions continuously squeeze the waterproof sleeve, which can enhance the friction between the clamping ring and the waterproof sleeve and further enhance the stability of the connection.

[0018] Preferably, a lower water-stop ring is fixedly connected to the outer surface of the waterproof sleeve, and a first water-stop adhesive is provided on the upper surface of the lower water-stop ring.

[0019] By adopting the above technical solution, a lower water-stop ring is set on the outer surface of the waterproof sleeve, and a first water-stop adhesive is set on the upper surface of the lower water-stop ring. The lower water-stop ring is set to increase the seepage path, and the first water-stop adhesive that expands when exposed to water is set on the upper surface of the lower water-stop ring. The first water-stop adhesive can absorb water and expand, thereby ensuring that the concrete pouring here is dense.

[0020] Preferably, an upper water-stop ring is fixedly connected to the outer surface of the waterproof sleeve, and a second water-stop adhesive is provided on the upper surface of the upper water-stop ring.

[0021] By adopting the above technical solution, an upper water-stop ring is set on the outer surface of the waterproof sleeve, and a second water-stop adhesive is set on the upper surface of the upper water-stop ring. The second water-stop adhesive has the same function as the first water-stop adhesive, absorbing water and expanding to ensure dense pouring. By setting the lower and upper water-stop rings, the seepage path can be increased, thereby improving the water-stopping effect. At the same time, the setting of the lower and upper water-stop rings can also improve the overall stability of the waterproof sleeve during installation, and can better prevent the infiltration of groundwater.

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

[0023] This waterproof deep foundation pit dewatering well structure incorporates components such as a fixing ring, a polyurethane elastomer, and a top ring. The fixing ring, installed on the inner wall of the waterproof casing, secures the polyurethane elastomer. When the dewatering well pipe is fitted onto the waterproof casing, the waterproof casing is positioned via a positioning groove and positioning strip. At this point, the top ring abuts against the polyurethane elastomer. As the waterproof casing descends, the polyurethane elastomer is compressed and expanded under the pressure of the top ring, allowing the dewatering well pipe and waterproof casing to seal against each other through the expanded polyurethane elastomer, effectively filling the gap between them. The gaps and minor unevenness between the pipes prevent groundwater seepage, thus improving waterproofing performance. By setting two sets of angled clamp assemblies, bolts are passed through the corresponding connection parts, and the connection between the nuts and bolts allows the connection parts to clamp the waterproof casing and the dewatering well pipe, improving the stability of the dewatering well pipe after it is connected to the waterproof casing. This prevents tilting and collapse between the dewatering well pipe and the waterproof casing, and also prevents tearing of the waterproof coating. At the same time, the protrusions continuously squeeze the waterproof casing, thereby increasing the friction between the clamping ring and the waterproof casing, further enhancing the stability of the connection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the entire application in three dimensions;

[0025] Figure 2 This is a schematic diagram of the overall front view of this application;

[0026] Figure 3 This is a structural schematic diagram showing the connection relationship between the dewatering well pipe and the structural base plate in this application;

[0027] Figure 4 This is a schematic diagram of the external structure of the waterproof sleeve in this application;

[0028] Figure 5 This is a schematic diagram of the clamp assembly of this application;

[0029] Figure 6 This is a schematic diagram showing the connection between the fixing ring and the polyurethane elastomer in this application.

[0030] In the picture:

[0031] 1. Dewatering well pipe; 2. Waterproof casing; 3. Fixing ring; 4. Polyurethane elastomer; 5. Top ring; 6. Positioning groove; 7. Positioning strip; 8. Structural base plate; 9. Waterproof coating; 10. Clamp assembly; 1001. Clamping ring; 1002. Connecting part; 1003. Bolt; 1004. Nut; 1005. Protrusion; 11. Lower water-stop ring; 12. First water-stop adhesive; 13. Upper water-stop ring; 14. Second water-stop adhesive. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.

[0033] Example 1: A waterproof deep foundation pit dewatering well structure, please refer to [link / reference]. Figure 1 , Figure 3 and Figure 6 The system includes a dewatering well pipe 1, a waterproof sleeve 2 fitted on the outer surface of the dewatering well pipe 1, a fixing ring 3 fixedly connected to the inner wall of the waterproof sleeve 2, and a polyurethane elastomer 4 fixedly connected to the bottom surface of the fixing ring 3. The waterproof sleeve 2 is fitted on the outer surface of the dewatering well pipe 1 so that the waterproof sleeve 2 can be fitted onto the outer surface of the dewatering well pipe 1 to limit the position of the waterproof sleeve 2. The fixing ring 3 is installed on the inner wall of the waterproof sleeve 2 to form a fixed connection and realize the installation of the fixing ring 3. The polyurethane elastomer 4 is set at the bottom of the fixing ring 3, and the polyurethane elastomer 4 has high elasticity, good wear resistance and oil resistance. A top ring 5 is fixedly connected to the top of the dewatering well pipe 1. The upper surface of the top ring 5 abuts against the bottom surface of the polyurethane elastomer 4. The top ring 5 is set on the upper surface of the dewatering well pipe 1 and fixed to the top of the dewatering well pipe 1 to realize the installation of the top ring 5.

[0034] Please see Figure 1 , Figure 3 and Figure 6The outer surface of the dewatering well pipe 1 is fixedly connected with equidistantly arranged positioning strips 7. The inner wall of the waterproof sleeve 2 is provided with equidistantly arranged positioning grooves 6. The inner wall of each positioning groove 6 is slidably connected to the outer surface of the corresponding positioning strip 7. The positioning grooves 6 are opened on the inner wall of the waterproof sleeve 2 to achieve positioning of the positioning grooves 6. The positioning strips 7 are installed on the outer surface of the dewatering well pipe 1 to achieve fixing of the positioning strips 7. When the dewatering well pipe 1 and the waterproof sleeve 2 are sleeved together, the waterproof sleeve 2 can be positioned and installed by first sliding the positioning grooves 6 and positioning strips 7. Installed on the surface of the dewatering well pipe 1, the top ring 5 abuts against the polyurethane elastomer 4. Through the continuous descent of the waterproof sleeve 2 and the positioning of the polyurethane elastomer 4 by the fixing ring 3, the polyurethane elastomer 4 can be compressed and expanded under the pressure of the top ring 5. After the dewatering well pipe 1 and the waterproof sleeve 2 are connected, the polyurethane elastomer 4, which expands under pressure, can seal the connection. This allows the polyurethane elastomer 4 to effectively fill the gaps and minor unevenness between the dewatering well pipe 1 and the waterproof sleeve 2, preventing groundwater seepage and improving waterproof performance.

[0035] Example 2: A waterproof deep foundation pit dewatering well structure, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 The outer surface of the dewatering well pipe 1 is provided with a structural base plate 8, and the outer surface of the waterproof sleeve 2 is coated with a waterproof coating 9. The waterproof coating 9 extends to the upper surface of the structural base plate 8. The structural base plate 8 is set on the outer surface of the dewatering well pipe 1, and the waterproof coating 9 is set on the outer surface of the waterproof sleeve 2, extending to the surface of the structural base plate 8, so that the waterproof coating 9 can wrap between the waterproof sleeve 2 and the structural base plate 8, initially waterproofing the connection position between the waterproof sleeve 2 and the dewatering well pipe 1. Two clamping assemblies 10 are provided on the outer side of the waterproof sleeve 2. Two sets of clamping assemblies 10 are set on the outer side of the waterproof sleeve 2. The clamping assemblies 10 are located at the joint of the dewatering well pipe 1 and the waterproof sleeve 2. The clamping of the two sets of clamping assemblies 10 can ensure the connection stability between the dewatering well pipe 1 and the waterproof sleeve 2, prevent the dewatering well pipe 1 and the waterproof sleeve 2 from tilting and collapsing, and thus prevent the waterproof coating 9 from tearing.

[0036] Please see Figure 2 and Figure 5Each clamp assembly 10 includes two clamping rings 1001 and two bolts 1003. Each clamping ring 1001 has a connecting part 1002 fixedly connected to both ends. The clamping rings 1001 are adaptable to the waterproof sleeve 2 and fit snugly against its surface. Each clamping ring 1001 has a connecting part 1002 at both ends, and the surface of the connecting part 1002 has mounting holes. Each bolt 1003 passes through the corresponding connecting part 1002, and the outer surface of each bolt 1003 is threaded with a nut 1004. By passing the bolt 1003 through the corresponding connecting part 1002, the bolt 1003 can pass through the mounting holes on the surface of the corresponding connecting part 1002, thus achieving the connection between the two connecting parts 1002 and enabling the corresponding clamping rings 1001 to be assembled. The clamping ring 1001 and the connecting part 1002 are fastened by the bolt 1003 and the nut 1004. The two sets of clamping assemblies 10 are installed at an angle, which can improve the stability of the dewatering well pipe 1 and the waterproof casing 2 after they are connected, prevent the dewatering well pipe 1 and the waterproof casing 2 from tilting and collapsing, and prevent the waterproof coating 9 from being torn. The inner wall of each clamping ring 1001 is fixedly connected with equidistant protrusions 1005. When the clamping ring 1001 is installed, the protrusions 1005 fit against the waterproof casing 2. Through the continuous clamping of the clamping ring 1001, the protrusions 1005 continuously squeeze the waterproof casing 2, which can enhance the friction between the clamping ring 1001 and the waterproof casing 2, and further enhance the stability of the connection.

[0037] Please see Figure 2 , Figure 3 and Figure 4A lower water-stop ring 11 is fixedly connected to the outer surface of the waterproof sleeve 2. A first water-stop adhesive 12 is provided on the upper surface of the lower water-stop ring 11. The lower water-stop ring 11 is used to increase the seepage path. The first water-stop adhesive 12, which expands upon contact with water, is provided on the upper surface of the lower water-stop ring 11. The first water-stop adhesive 12 can absorb water and expand, thereby ensuring the compactness of the concrete pouring at this point. An upper water-stop ring 13 is fixedly connected to the outer surface of the waterproof sleeve 2. A second water-stopping adhesive 14 is provided on the upper surface of the water-stopping ring 13. An upper water-stopping ring 13 is provided on the outer surface of the waterproof sleeve 2, and a second water-stopping adhesive 14 is provided on the upper surface of the upper water-stopping ring 13. The second water-stopping adhesive 14 has the same function as the first water-stopping adhesive 12: it absorbs water and expands to ensure that the pouring is dense. By setting the lower water-stopping ring 11 and the upper water-stopping ring 13, the seepage path can be increased, thereby improving the water-stopping effect. At the same time, the setting of the lower water-stopping ring 11 and the upper water-stopping ring 13 can also improve the overall stability of the waterproof sleeve 2 during installation and better prevent the infiltration of groundwater.

[0038] The implementation principle of this application embodiment is as follows: First, through the connection between the positioning groove 6 and the positioning strip 7, the waterproof sleeve 2 can be fitted onto the surface of the dewatering well pipe 1. Then, the waterproof sleeve 2 is lowered, at which point the top ring 5 fits against the polyurethane elastomer 4. Through the continuous descent of the waterproof sleeve 2 and the limiting of the polyurethane elastomer 4 by the fixing ring 3, the polyurethane elastomer 4 can be compressed and expanded under the pressure of the top ring 5. This allows the polyurethane elastomer 4, which expands under pressure, to seal the connection between the dewatering well pipe 1 and the waterproof sleeve 2, effectively filling the gaps and minor unevenness between the dewatering well pipe 1 and the waterproof sleeve 2, preventing groundwater seepage, and achieving the effect of improving waterproof performance. Then, a waterproof coating 9 is applied to the surface of the waterproof sleeve 2, and the clamp assembly 10 is angled... A clamping ring 1001 is set at the connection position between the waterproof sleeve 2 and the dewatering well pipe 1. Then, the clamping ring 1003 is connected with the nut 1004 so that the clamping ring 1001 can clamp the waterproof sleeve 2, improve the stability after the dewatering well pipe 1 and the waterproof sleeve 2 are connected, prevent the dewatering well pipe 1 and the waterproof sleeve 2 from tilting and collapsing, and thus prevent the waterproof coating 9 from being torn. At this time, the protrusion 1005 continuously squeezes the waterproof sleeve 2, thereby increasing the friction between the clamping ring 1001 and the waterproof sleeve 2, and further enhancing the stability of the connection. By setting the lower water-stopping ring 11 and the upper water-stopping ring 13, the seepage path can be increased, thereby improving the water-stopping effect and improving the overall stability of the waterproof sleeve 2 during installation, which can better prevent the seepage of groundwater.

Claims

1. A waterproof deep foundation pit dewatering well structure comprising a dewatering well pipe (1), characterized in that: The outer surface of the dewatering well pipe (1) is fitted with a waterproof sleeve (2). A fixing ring (3) is fixedly connected to the inner wall of the waterproof sleeve (2). A polyurethane elastomer (4) is fixedly connected to the bottom surface of the fixing ring (3). A top ring (5) is fixedly connected to the top of the dewatering well pipe (1). The upper surface of the top ring (5) abuts against the bottom surface of the polyurethane elastomer (4). A positioning strip (7) is fixedly connected to the outer surface of the dewatering well pipe (1) at equal intervals. A positioning groove (6) is opened on the inner wall of the waterproof sleeve (2) at equal intervals. The inner wall of each positioning groove (6) is slidably connected to the outer surface of the corresponding positioning strip (7).

2. The waterproof deep foundation pit dewatering well structure according to claim 1, characterized in that: The outer surface of the dewatering well pipe (1) is provided with a structural base plate (8), and the outer surface of the waterproof sleeve (2) is coated with a waterproof coating (9), which extends to the upper surface of the structural base plate (8).

3. The waterproof deep foundation pit dewatering well structure according to claim 1, characterized in that: The waterproof sleeve (2) is provided with two clamp assemblies (10) on the outside.

4. The waterproof deep foundation pit dewatering well structure according to claim 3, characterized in that: Each clamp assembly (10) includes two clamping rings (1001) and two bolts (1003), and each clamping ring (1001) has a connecting part (1002) fixedly connected to both ends.

5. The waterproofed deep foundation pit dewatering well structure according to claim 4, characterized in that: Each bolt (1003) passes through the corresponding connecting part (1002), and a nut (1004) is threaded onto the outer surface of each bolt (1003).

6. The waterproof deep foundation pit dewatering well structure according to claim 4, characterized in that: Each of the clamping rings (1001) has equidistantly arranged protrusions (1005) fixedly connected to its inner wall.

7. The waterproof deep foundation pit dewatering well structure according to claim 1, characterized in that: The outer surface of the waterproof sleeve (2) is fixedly connected to a lower water-stop ring (11), and the upper surface of the lower water-stop ring (11) is provided with a first water-stop adhesive (12).

8. The waterproof deep foundation pit dewatering well structure according to claim 1, characterized in that: The outer surface of the waterproof sleeve (2) is fixedly connected to an upper water-stop ring (13), and the upper surface of the upper water-stop ring (13) is provided with a second water-stop adhesive (14).

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