Waterproof structure of foundation pit support pile
By setting water-stop sealing rings and adjusting rods in the embedded interlocking connection between the foundation pit support piles, and combining the design of through columns and through slots, the problem of poor water-stopping effect between traditional foundation pit support piles is solved, achieving a more stable waterproof effect and long-term waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN PENGZHIYI CONSTR DESIGN CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional foundation pit support piles have poor inter-pile water-stopping effect, making it difficult to form a completely closed water-stopping system, which easily leads to leakage.
A water-stop sealing ring and an adjusting rod are used to form a sealed connection between adjacent support piles. The connection is strengthened by the embedded snap-fit installation of the auxiliary ring and the water-stop sealing ring, combined with the design of the through-pile and through-slot. The gaps between the piles are filled to prevent groundwater seepage.
It achieves direct and effective sealing between adjacent support piles, enhances waterproof performance, resists external forces, ensures the long-term stability and integrity of the waterproof structure, and improves the waterproof effect.
Smart Images

Figure CN224395576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foundation pit support pile technology, and in particular to a waterproof structure for foundation pit support piles. Background Technology
[0002] Waterproof structure of foundation pit support piles refers to a series of waterproof structures or systems installed around the support piles in foundation pit engineering to prevent groundwater or other water sources from seeping into the foundation pit.
[0003] In traditional foundation pit support piles, waterproof coatings are usually used. By applying the waterproof coating to the support piles, the support piles with the waterproof coating can achieve the effect of stopping water. However, the water-stopping effect between traditional support piles mainly depends on the construction quality of the pile itself and the soil between the piles, which makes it difficult to form a completely closed water-stopping system and is prone to leakage.
[0004] Therefore, we provide a waterproof structure for foundation pit support piles. Summary of the Invention
[0005] The purpose of this utility model is to address the aforementioned technical problems by providing a waterproof structure for foundation pit support piles, which can form a direct and effective sealed connection between adjacent support piles. The water-stop sealing ring can fill the gaps between piles and prevent groundwater from seeping through the piles.
[0006] In view of this, the present invention provides a waterproof structure for foundation pit support piles, including a support base, wherein the support base is composed of a first support pile and a second support pile;
[0007] A water-stopping auxiliary component is disposed within the cavities of the first and second support piles. The water-stopping auxiliary component includes an auxiliary ring, which is installed in the side grooves of the first and second support piles via an adjusting rod. A water-stopping sealing ring is provided on the abutting end face of the auxiliary ring. A positioning block is provided in the side groove, which allows the side groove to form a buffer zone. A collar is provided on the first and second support piles.
[0008] Preferably, the auxiliary ring has a pre-reserved through slot, and the water-stop sealing ring is embedded and engaged in the pre-reserved receiving slot of the auxiliary ring.
[0009] Preferably, the auxiliary ring is provided with extension plates at both ends, and the extension plates are adapted to be supported in the side groove. The auxiliary ring can be stably adjusted horizontally along the grooves of the first and second support piles through the extension plates at both ends.
[0010] Preferably, the first and second support piles are provided with solid columns.
[0011] Preferably, the surface of the solid column is coated with a waterproof coating.
[0012] Preferably, the water-stop sealing ring in the first support pile is provided with an insert post, and the water-stop sealing ring in the second support pile is provided with a slot at its abutting end face.
[0013] Preferably, the insert post on the water-stop sealing ring inside the first support pile is embedded in the slot of the water-stop sealing ring inside the second support pile.
[0014] Compared with the prior art, this utility model provides a waterproof structure for foundation pit support piles, which has the following beneficial effects:
[0015] 1. This utility model, through the setting of a water-stop sealing ring and the adjustment rod to make them tightly abut against each other, can form a direct and effective sealing connection between adjacent support piles. The water-stop sealing ring can fill the gap between the piles, prevent groundwater from seeping through the piles, and greatly improve the waterproof performance.
[0016] 2. This utility model uses an embedded snap-fit installation method to form a tight connection between the water-stop sealing ring and the auxiliary ring. Compared with other simple connection methods, such as pasting or binding, it can better prevent the water-stop sealing ring from being subjected to external forces during use, enhance the stability of the water-stop sealing ring on the auxiliary ring, and ensure the long-term effectiveness of the waterproof structure.
[0017] 3. This utility model, through the embedded insertion of the through-column and through-slot, can make the connection between the two water-stop sealing rings more stable. Compared with the connection method that relies solely on compression or planar contact, this structure can effectively resist the tensile, compressive and shear forces along the axial and radial directions of the pile body, preventing the two water-stop sealing rings from sliding or separating relative to each other when under force, thereby ensuring the integrity and stability of the waterproof structure between adjacent support piles.
[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall connection structure of a waterproof structure for foundation pit support piles proposed in this utility model.
[0020] Figure 2 This is a schematic diagram of the collar assembly structure of a waterproof structure for foundation pit support piles proposed in this utility model.
[0021] Figure 3 A schematic diagram of the water-stopping auxiliary component and solid column installation structure of a waterproof structure for foundation pit support piles proposed in this utility model.
[0022] Figure 4This is a schematic diagram of the water-stop sealing ring structure of a waterproof structure for foundation pit support piles proposed in this utility model.
[0023] In the diagram: 100, support base; 101, first support pile; 102, second support pile; 103, collar; 200, side groove; 300, water-stopping auxiliary component; 301, auxiliary ring; 302, water-stopping sealing ring; 303, extension plate; 304, adjusting rod; 305, positioning block; 306, receiving groove; 307, through column; 308, through slot; 400, solid column. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] Example 1: A waterproof structure for foundation pit support piles, such as... Figure 1 - Figure 4 As shown, it includes a support base 100, which is composed of a first support pile 101 and a second support pile 102.
[0027] A water-stopping auxiliary component 300 is disposed in the cavity of the first support pile 101 and the second support pile 102. The water-stopping auxiliary component 300 includes an auxiliary ring 301, which is installed in the side groove 200 of the first support pile 101 and the second support pile 102 by means of an adjusting rod 304. A water-stopping sealing ring 302 is provided on the abutting end face of the auxiliary ring 301. A positioning block 305 is provided in the side groove 200, which enables the side groove 200 to form a buffer zone. A collar 103 is provided on the first support pile 101 and the second support pile 102.
[0028] In use, firstly, the first and second support piles 101 and 102 are accurately driven into the ground according to the marked positions using equipment such as a pile driver. Positioning blocks 305 are installed in the side grooves 200 of the first and second support piles 101 and 102 to determine the buffer zone position. The water-stop sealing ring 302 is then installed on the abutting end face of the auxiliary ring 301. Using the adjusting rod 304, the auxiliary ring 301 with the water-stop sealing ring 302 installed is installed into the side grooves 200 of the first and second support piles 101 and 102. The position of the auxiliary ring 301 is initially adjusted so that the water-stop sealing rings 302 of the two auxiliary rings 301 are aligned. Then, the adjusting rod 304 is used to slightly adjust the position. The position of the auxiliary ring 301 is adjusted so that the water-stop sealing rings 302 inside the first support pile 101 and the second support pile 102 are tightly abutted to ensure a sealing effect. The adjusting rod 304 is threaded. Through the water-stop sealing rings 302 and the adjusting rod 304, a direct and effective sealing connection can be formed between adjacent support piles. The water-stop sealing rings 302 can fill the gaps between piles and prevent groundwater from seeping through the piles, greatly improving the waterproof performance. Finally, the collar 103 is fitted onto the first support pile 101 and the second support pile 102 to close and cover the side groove 200. The collar 103 is made of rubber.
[0029] like Figure 1 - Figure 4 As shown, the auxiliary ring 301 has a pre-reserved receiving groove 306. The water-stop sealing ring 302 is embedded and snapped into the pre-reserved receiving groove 306 of the auxiliary ring 301. In use, the water-stop sealing ring 302 can be embedded into the receiving groove 306 of the auxiliary ring 301. Through embedded installation, a tight connection can be formed between the water-stop sealing ring 302 and the auxiliary ring 301. Compared with other simple connection methods, such as pasting or binding, it can better prevent the water-stop sealing ring 302 from being subjected to external forces during use, enhance the stability of the water-stop sealing ring 302 on the auxiliary ring 301, and ensure the long-term effectiveness of the waterproof structure.
[0030] like Figure 1 - Figure 4 As shown, the auxiliary ring 301 is provided with extension plates 303 at both ends. The extension plates 303 are adapted to be supported in the side groove 200. The auxiliary ring 301 can be stably adjusted horizontally in the groove of the first support pile 101 and the second support pile 102 through the extension plates 303 at both ends.
[0031] like Figure 1 - Figure 4As shown, the first support pile 101 and the second support pile 102 are equipped with solid columns 400. The surface of the solid columns 400 is coated with a waterproof coating. When in use, the solid columns 400 can fill the internal space of the support pile, reducing the channels through which groundwater may seep through the internal pores and cracks of the pile. The waterproof coating further forms a continuous and closed waterproof membrane on the surface of the solid columns 400, which can effectively prevent water from contacting the solid columns 400 and the inside of the pile, blocking the seepage path of groundwater from the inside out, and greatly improving the waterproof capability of the support pile.
[0032] Example 2: A waterproof structure for foundation pit support piles, such as... Figure 1 - Figure 4 As shown, the first support pile 101 has a water-stop sealing ring 302 with an insert post 307, and the second support pile 102 has a water-stop sealing ring 302 with an insert slot 308 on the abutting end face.
[0033] The insertion post 307 on the water-stop sealing ring 302 inside the first support pile 101 is embedded in the through slot 308 of the water-stop sealing ring 302 inside the second support pile 102.
[0034] In use, the through slot 308 provides a precise installation position for the water-stop sealing ring 302, allowing it to be accurately embedded in the auxiliary ring 301. This ensures that the water-stop sealing ring 302 is fixed in position on the auxiliary ring 301, preventing displacement or shaking during installation and thus guaranteeing the installation accuracy of the entire waterproof structure. Through the embedded insertion of the through post 307 and the through slot 308, the connection between the two water-stop sealing rings 302 becomes more stable. Compared to connection methods that rely solely on compression or planar contact, this structure can effectively resist tensile, compressive, and shear forces along the axial and radial directions of the pile body, preventing the two water-stop sealing rings 302 from sliding or separating relative to each other under stress, thereby ensuring the integrity and stability of the waterproof structure between adjacent support piles.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A waterproof structure for foundation pit support piles, characterized in that, It includes a support base (100), which is composed of a first support pile (101) and a second support pile (102); A water-stopping auxiliary component (300) is provided in the cavity of the first support pile (101) and the second support pile (102). The water-stopping auxiliary component (300) includes: an auxiliary ring (301), which is installed in the side groove (200) of the first support pile (101) and the second support pile (102) by means of an adjusting rod (304). A water-stopping sealing ring (302) is provided on the abutting end face of the auxiliary ring (301). A positioning block (305) is provided in the side groove (200). The positioning block (305) makes the side groove (200) form a buffer zone. A collar (103) is provided on the first support pile (101) and the second support pile (102).
2. The waterproof structure of the foundation pit support pile according to claim 1, characterized in that, The auxiliary ring (301) has a pre-reserved receiving groove (306), and the water-stop sealing ring (302) is embedded and snapped into the pre-reserved receiving groove (306) of the auxiliary ring (301).
3. The waterproof structure of the foundation pit support pile according to claim 2, characterized in that, The auxiliary ring (301) is provided with extension plates (303) at both ends. The extension plates (303) are adapted to be supported in the side groove (200). The auxiliary ring (301) can be stably adjusted horizontally in the groove of the first support pile (101) and the second support pile (102) through the extension plates (303) at both ends.
4. The waterproof structure of the foundation pit support pile according to claim 1, characterized in that, The first support pile (101) and the second support pile (102) are equipped with solid columns (400).
5. The waterproof structure of the foundation pit support pile according to claim 4, characterized in that, The solid column (400) has a waterproof coating on its surface.
6. The waterproof structure of the foundation pit support pile according to claim 1, characterized in that, The first support pile (101) has a water-stop sealing ring (302) with an insert post (307), and the second support pile (102) has a water-stop sealing ring (302) with an insert slot (308) on the abutting end face.
7. The waterproof structure of the foundation pit support pile according to claim 6, characterized in that, The insertion post (307) provided on the water-stop sealing ring (302) in the first support pile (101) is embedded in the through slot (308) of the water-stop sealing ring (302) in the second support pile (102).