Foundation pit waterproof curtain grouting positioning structure

Abstract

This utility model provides a grouting positioning structure for a foundation pit water-stop curtain, relating to the field of water-stop curtain technology. It includes: a support base with a grouting hole penetrating its center and columns on both sides; symmetrically arranged grooves on the upper part of the support base on both sides of the grouting hole; and two support mechanisms symmetrically arranged on both sides of the grouting hole and connected to the two columns. The beneficial effects of this utility model are: through the cooperation of the support base, grooves, support mechanisms, extrusion structure, connectors, and diagonal braces, it effectively solves the problem of column displacement during concrete pouring in the prior art. The connectors in the support mechanism are tightly fitted to the columns, and the diagonal braces interact with the extrusion structure. By lowering the pressure block and utilizing the extrusion principle of the inclined plane, the slider drives the clamping plate to move, thereby achieving the fastening of the connectors by the diagonal braces, and thus ensuring that the four connectors make hard contact with the two columns respectively.

Description

Technical Field

[0001] This utility model relates to the field of water-stop curtain technology, and in particular to a grouting positioning structure for a foundation pit water-stop curtain. Background Technology

[0002] In the field of modern building foundation construction, water-stop curtains are widely used as a key structure to prevent groundwater seepage and ensure the stability of foundation pits and construction safety. Currently, a common forming process involves hoisting two columns into the high-pressure jet grouting water-stop curtain pile foundation using a mold, followed by the injection of concrete grout. This creates column holes on both sides of the water-stop curtain, facilitating the subsequent continuous drilling of pile foundation holes and thus constructing a complete water-stop curtain system. This process improves the flexibility and efficiency of construction to a certain extent.

[0003] However, this process has a significant drawback: during the concrete pouring stage, the columns hoisted and lowered into the pile foundation are highly susceptible to the impact force generated by the drop of the concrete, which can cause them to shift in position. Once the column position deviates, the position of the column hole after molding will deviate from the design position, which will seriously affect the accuracy and quality of subsequent pile foundation excavation, increase the difficulty and risk of construction, and may lead to safety hazards in the entire foundation structure, thereby reducing the overall quality and reliability of the project. Utility Model Content

[0004] In view of this, the embodiments of this utility model provide a grouting positioning structure for foundation pit water-stop curtains to solve the technical problem that the columns of water-stop curtain molds are easily displaced by concrete impact in the prior art.

[0005] An embodiment of this utility model provides a grouting positioning structure for a foundation pit water-stop curtain, comprising:

[0006] The support base has a grouting hole through its middle and columns on both sides. The upper part of the support base has symmetrically arranged grooves on both sides of the grouting hole.

[0007] Two support mechanisms are symmetrically arranged on both sides of the grouting hole and connected to the two columns. Each support mechanism includes two connectors, two diagonal braces and an extrusion structure. One connector is connected to one diagonal brace, one connector is attached to the side of one column, and the two diagonal braces abut against the extrusion structure.

[0008] The extrusion structure includes two sliders and a pressure block. The opposite side of the two sliders and both sides of the pressure block are inclined surfaces. The pressure block abuts against the inclined surfaces of the two sliders through its two inclined surfaces. By lowering the pressure block, the two inclined surfaces of the pressure block squeeze the two sliders to move in opposite directions, thereby causing the inclined support and the sliders to abut. The four connecting parts of the two support mechanisms make hard contact with the two columns, so that the two columns abut against each other indirectly.

[0009] Furthermore, the slider is an L-shaped part, with one side of its two vertical surfaces slidably connected to the groove, and a clamping plate connected to the other side. The clamping plate and the slider are vertically connected to form a vertical part, and the diagonal brace abuts against the vertical part.

[0010] Furthermore, both sides of the pressure block are attached to the inner wall of the slide groove, and a bolt is rotatably installed on the bottom wall of the slide groove. A threaded hole passes through the middle of the pressure block, and the pressure block is threadedly connected to the bolt through the threaded hole.

[0011] Furthermore, each of the connecting components includes a support column, a ball seat, and a connecting block. The bottom of the connecting block is provided with a ball groove. The ball seat is connected to the upper end of the support column, and the ball seat and the ball groove are in a rolling connection.

[0012] Furthermore, one side of the connecting block is adapted to the shape of the column, and the connecting block abuts against the side of the column.

[0013] Furthermore, the diagonal brace includes a connecting rod and a triangular head, the connecting rod being connected to the triangular head and the connecting block, and the triangular head abutting against the clamping plate and the slider.

[0014] Furthermore, recesses are provided on both sides of the slide groove, and elastic elements are provided on the inner walls of the recesses, which are connected to the slider.

[0015] Furthermore, the upper end of the bolt does not extend above the groove, and a hexagonal countersunk hole is provided at the upper end of the bolt.

[0016] Furthermore, the support base has a through hole with the same cross-section as the column, and the column is fitted into the through hole and connected to the support base.

[0017] Furthermore, the upper end of the column is provided with a lifting lug.

[0018] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The grouting positioning structure for the foundation pit water-stop curtain of this utility model, through the cooperation of components such as support base, slide groove, support mechanism, extrusion structure, connector, and diagonal brace, effectively solves the problem of easy positional displacement of columns during the concrete pouring stage in the prior art. The connector in the support mechanism is closely fitted with the column, and the diagonal brace interacts with the extrusion structure. By adjusting the pressure block, the slider drives the clamping plate to move by utilizing the extrusion principle of the inclined surface, thereby achieving the fastening of the connector by the diagonal brace. In turn, the four connectors make hard contact with the two columns respectively, ensuring the indirect abutment stability of the two columns, providing a reliable positioning foundation for the subsequent pile foundation opening, significantly improving the accuracy and quality of foundation pit water-stop curtain construction, and reducing construction difficulty and risk. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the positioning structure for the foundation pit water-stop curtain grouting of this utility model;

[0020] Figure 2 This is an exploded view of the grouting positioning structure for the foundation pit water-stop curtain of this utility model;

[0021] Figure 3 This is a longitudinal cross-sectional view of the grouting positioning structure for the foundation pit water-stopping curtain of this utility model.

[0022] In the diagram: 1. Support base; 2. Column; 3. Lifting lug; 4. Support column; 5. Connecting block; 6. Ball seat; 7. Ball groove; 8. Connecting rod; 9. Triangular head; 10. Slide groove; 11. Sliding block; 12. Clamping plate; 13. Pressure block; 14. Bolt; 15. Concave hole; 16. Elastic element. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0024] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0025] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0027] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0028] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please refer to Figure 1 The present invention provides a grouting positioning structure for a foundation pit water-stop curtain, including a support base 1 and two support mechanisms. The support base 1 has a grouting hole through the middle and columns 2 on both sides. The upper part of the support base 1 has symmetrically arranged sliding grooves 10 on both sides of the grouting hole.

[0030] The upper end of the column 2 is provided with a lifting lug 3 to facilitate the lifting and positioning of the column 2. The support base 1 has a through hole with the same cross-section as the column 2. The column 2 fits into the through hole and is connected to the support base 1 to ensure the tightness and stability of the connection between the column 2 and the support base 1.

[0031] In practical applications, by placing the support base 1 on the ground above the pile hole, the grouting hole and the pile hole are aligned, and two columns 2 are hoisted through the support base 1 and placed vertically on both sides of the pile hole.

[0032] like Figure 2 and Figure 3 As shown, two support mechanisms are symmetrically arranged on both sides of the grouting hole and connected to the two columns 2. Each support mechanism includes two connectors, two diagonal braces and an extrusion structure.

[0033] Furthermore, the extrusion structure includes two sliders 11 and a pressure block 13. The two sliders 11 are L-shaped parts, with one side of their two vertical surfaces slidably connected to the slide groove 10, and a clamping plate 12 connected to the other side. The clamping plate 12 and the sliders 11 are vertically connected to form a vertical part.

[0034] It should be noted that the clamping plate 12 slides against the surface of the support base 1, while the vertical surface of the slider 11 slides against the bottom wall of the groove 10. The vertical ends of the two sliders 11 face each other so that the pressure block 13 can contact the two sliders 11 at the same time.

[0035] Both sides of the pressure block 13 are inclined surfaces and both sides are attached to the inner wall of the slide groove 10, which restricts the rotation of the pressure block 13 relative to the two sliders 11.

[0036] In addition, a bolt 14 is rotatably installed on the bottom wall of the slide 10, and a threaded hole is passed through the middle of the pressure block 13. The pressure block 13 is threadedly connected to the bolt 14 through the threaded hole. By rotating the bolt 14, the pressure block 13 can be moved up and down.

[0037] When the pressure block 13 is adjusted downwards, its two inclined surfaces press the two sliders 11 to move in opposite directions, causing the inclined support and sliders 11 to abut against each other, thereby achieving the pressing and fixing of the connecting parts.

[0038] In order to enable the pressure block 13 to be lifted back to its original position when the two sliders 11 are in the reset state, recesses 15 are provided on both sides of the slide groove 10. An elastic element 16 is provided on the inner wall of the recess 15. The elastic element 16 is connected to the slider 11. The elastic element 16 can be a spring, which has the ability to push the slider 11 away from the inner wall of the slide groove 10 to slide, that is, the two sliders 11 slide closer to each other.

[0039] The upper end of the bolt 14 does not extend above the slide groove 10, and the upper end of the bolt 14 is provided with a hexagonal countersunk hole, which facilitates the rotation of the tool and also prevents the bolt 14 from protruding and affecting the installation and use of other components.

[0040] like Figure 2 As shown, each connector includes a support column 4, a ball seat 6, and a connecting block 5. The bottom of the connecting block 5 is provided with a ball groove 7. The ball seat 6 is connected to the upper end of the support column 4, and the ball seat 6 and the ball groove 7 are in a rolling connection, which gives the connector a certain degree of angular adjustment flexibility. During the grouting process, the concrete slurry will generate a radial impact on the column 2 in the pile hole. At this time, the column 2 is prone to radial trajectory deviation. Since the movement trajectory of the connecting block 5 and the connection end of the column 2 presents a certain arc, the movement mode of the ball seat 6 and the ball groove 7 can adapt to the movement trajectory, thereby effectively transmitting the impact.

[0041] In addition, one side of the connecting block 5 is adapted to the shape of the column 2. The cross-section of the column 2 is elliptical, so the side of the connecting block 5 has the same arc-shaped recess as the column 2. This recessed part abuts against the side of the column 2 to achieve a tight fit and support for the column 2.

[0042] In an optional embodiment, the diagonal brace includes a connecting rod 8 and a triangular head 9. The connecting rod 8 is connected to the triangular head 9 and the connecting block 5. The triangular head 9 abuts against the clamping plate 12 and the slider 11. The diagonal brace connects the connector to the extrusion structure to form an integral support system.

[0043] In practical applications, firstly, the two columns 2 are hoisted into the high-pressure jet grouting cutoff wall pile foundation using the hoisting lugs 3, ensuring that the columns 2 pass through the through holes of the support base 1 and connect to the support base 1. The sides of the columns 2 are in contact with the connecting parts on the support base 1. Then, by rotating the bolt 14, the pressure block 13 slides downward. The inclined surfaces on both sides of the pressure block 13 press the two sliders 11 to move in opposite directions. The sliders 11 drive the clamping plate 12 to move, thereby making the triangular head 9 in the diagonal brace fit tightly against the clamping plate 12 and the sliders 11, thus pressing the diagonal brace towards the connecting parts. The four connectors are made to make hard contact with the sides of the two columns 2 respectively, so as to achieve indirect contact and stable positioning of the two columns 2. At this time, the support seat 1 provides support and limit for the columns 2. The slider 11, pressure block 13, diagonal brace and connectors cooperate with each other to form a stable support system, which can effectively resist the impact force generated during concrete pouring, prevent the columns 2 from shifting position, ensure the accurate position of the column holes on both sides of the formed water-stop curtain, provide a reliable positioning foundation for the subsequent continuous drilling of pile foundation holes, and ensure the quality and stability of the foundation pit water-stop curtain construction.

[0044] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0045] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foundation pit waterproof curtain grouting positioning structure, characterized in that, include: The support base (1) has a grouting hole through its middle part and a downwardly extending column (2) at its bottom. The upper part of the support base (1) has symmetrically arranged grooves (10) on both sides of the grouting hole. Two support mechanisms are symmetrically arranged on both sides of the grouting hole and connected to the two columns (2). Each support mechanism includes two connectors, two diagonal braces and an extrusion structure. One connector is connected to one diagonal brace. One connector is attached to the side of one column (2). The two diagonal braces abut against the extrusion structure. The extrusion structure includes two sliders (11) and a pressure block (13). The opposite side of the two sliders (11) and both sides of the pressure block (13) are inclined surfaces. The pressure block (13) abuts against the inclined surfaces of the two sliders (11) through its two inclined surfaces. By lowering the pressure block (13), the two inclined surfaces of the pressure block (13) squeeze the two sliders (11) to move in opposite directions, thereby making the inclined support and the sliders (11) abut against each other. The four connecting parts of the two support mechanisms make hard contact with the two columns (2), so that the two columns (2) abut against each other indirectly.

2. The foundation pit water-stop curtain grouting positioning structure as described in claim 1, characterized in that: The slider (11) is an L-shaped part, with one side of its two vertical surfaces slidably connected to the slide groove (10), and a clamping plate (12) connected to the other side. The clamping plate (12) and the slider (11) are vertically connected to form a vertical part, and the diagonal brace abuts against the vertical part.

3. The foundation pit water-stop curtain grouting positioning structure as described in claim 2, characterized in that: Both sides of the pressure block (13) are attached to the inner wall of the slide groove (10). A bolt (14) is rotatably installed on the bottom wall of the slide groove (10). A threaded hole is passed through the middle of the pressure block (13), and the pressure block (13) is threadedly connected to the bolt (14) through the threaded hole.

4. The foundation pit water-stop curtain grouting positioning structure as described in claim 2, characterized in that: Each of the connectors includes a support column (4), a ball seat (6) and a connecting block (5). The bottom of the connecting block (5) is provided with a ball groove (7). The ball seat (6) is connected to the upper end of the support column (4), and the ball seat (6) is in a rolling connection with the ball groove (7).

5. The foundation pit water-stop curtain grouting positioning structure as described in claim 4, characterized in that: One side of the connecting block (5) is adapted to the shape of the column (2), and the connecting block (5) abuts against the side of the column (2).

6. The foundation pit water-stop curtain grouting positioning structure as described in claim 4, characterized in that: The diagonal brace includes a connecting rod (8) and a triangular head (9). The connecting rod (8) is connected to the triangular head (9) and the connecting block (5). The triangular head (9) abuts against the clamping plate (12) and the slider (11).

7. The foundation pit water-stop curtain grouting positioning structure as described in claim 1, characterized in that: The slide (10) has recessed holes (15) on both sides of the slide. The inner wall of the recessed hole (15) is provided with an elastic element (16), which is connected to the slider (11).

8. The foundation pit water-stop curtain grouting positioning structure as described in claim 3, characterized in that: The upper end of the bolt (14) does not extend above the groove (10), and a hexagonal countersunk hole is provided at the upper end of the bolt (14).

9. The foundation pit water-stop curtain grouting positioning structure as described in claim 1, characterized in that: The support base (1) has a through hole with the same cross-section as the column (2), and the column (2) is attached to the through hole and connected to the support base (1).

10. The foundation pit water-stop curtain grouting positioning structure as described in claim 1, characterized in that: The upper end of the column (2) is provided with a lifting lug (3).

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