A detection device for the pouring surface elevation of a diaphragm wall

Abstract

The utility model belongs to the field of building construction technology, disclose a detection device of ground connected wall pouring face elevation, including support frame, insert piece and sampling assembly. Support frame is provided with the chamber one and the opening of intercommunication, and the opening is arranged in the lateral wall of support frame. Insert piece is arranged in the lower extreme of support frame, and insert piece is provided with the chamber two of chamber one intercommunication. Sampling assembly is arranged in the chamber one, is provided with the sampling cylinder who links and inserts the stick. The one end of inserts the stick and departs from sampling cylinder stretches out the chamber one, and inserts the stick can move along the vertical direction. Sampling cylinder has the sealing state of being buckled in the upper end of insert piece and the sampling state of being away from insert piece. When sealing state, sampling cylinder can seal the chamber two, when sampling state, the opening is communicated with the chamber two through the chamber one. The pouring face elevation of ground connected wall can be detected more accurately by using the detection device to detect the pouring face elevation of ground connected wall, guarantee the accuracy of detection result, avoid the influence of the construction quality of ground connected wall.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a device for detecting the elevation of the diaphragm wall pouring surface. Background Technology

[0002] Diaphragm walls (or simply diaphragm walls) are a type of support structure used in deep foundation pit engineering and underground spaces. They offer advantages such as high rigidity, high strength, and excellent seepage prevention. They can serve as temporary retaining walls and water-stop curtains during the foundation pit excavation stage, or be directly integrated into the main building structure (such as the exterior walls of basements), saving costs and construction time. During construction, it is essential to ensure that the pouring surface of the diaphragm wall is at the design elevation.

[0003] In existing technologies, when inspecting the pouring surface of a diaphragm wall, a rebar plug is typically tied to a measuring rope. The rebar plug is then lowered into the pouring cavity of the diaphragm wall until it contacts the pouring surface. The elevation of the pouring surface is then estimated based on the length of the measuring rope at this point. However, during the pouring process of the diaphragm wall, mud back-pushing may occur, creating a false pouring surface. If workers only lower the rebar plug using the measuring rope, the mud will push the rebar plug upwards, and the measuring rope cannot provide downward thrust. This causes the rebar plug to contact the false pouring surface, resulting in a significant error in the measured elevation of the diaphragm wall's pouring surface and affecting the construction quality of the diaphragm wall. Utility Model Content

[0004] The purpose of this utility model is to provide a device for detecting the elevation of the diaphragm wall pouring surface, which can accurately detect the elevation of the diaphragm wall pouring surface. It has a simple structure, is easy to operate, and avoids affecting the construction quality of the diaphragm wall.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for detecting the elevation of the diaphragm wall casting surface is provided, comprising:

[0007] A support frame is provided with an interconnected chamber and an opening, the opening being located on the side wall of the support frame;

[0008] An insert is provided at the lower end of the support frame, and the insert is provided with a second chamber communicating with the first chamber;

[0009] A sampling assembly is disposed within the first chamber. The sampling assembly includes a connected insertion rod and a sampling tube. One end of the insertion rod, away from the sampling tube, extends out of the first chamber and is vertically movable. The sampling tube has a sealed state where it is fastened to the upper end of the insertion member and a sampling state where it is away from the insertion member. In the sealed state, the sampling tube can seal the second chamber. In the sampling state, the opening communicates with the second chamber through the first chamber.

[0010] Optionally, the support frame includes a plurality of support rods spaced apart circumferentially and a plurality of connectors. The plurality of support rods surround to form the first chamber. An opening communicating with the first chamber is formed between two adjacent support rods. The plurality of connectors are spaced apart axially along the support rods and located within the first chamber. Each connector is connected to the plurality of support rods. The end of the insertion rod away from the sampling tube passes through the plurality of connectors and extends out of the first chamber.

[0011] Optionally, the connector includes a plurality of connecting rods and a connecting ring. The plurality of connecting rods are circumferentially spaced and connected to the side wall of the connecting ring. The plurality of connecting rods correspond one-to-one with the plurality of supporting rods. The end of the connecting rod facing away from the connecting ring is connected to the side wall of the supporting rod. The insert rod passes through the connecting ring.

[0012] Optionally, the support frame further includes a plurality of reinforcing rods, each of which corresponds to a plurality of the connectors, and the reinforcing rods are arranged circumferentially around the plurality of support rods.

[0013] Optionally, the connector includes a connecting plate, and a plurality of the support rods are circumferentially arranged and connected to the side wall of the connecting plate so that the support rods are perpendicular to the connecting plate. The connecting plate has a through hole, and the insertion rod passes through the through hole.

[0014] Optionally, the support rod may comprise a galvanized steel pipe.

[0015] Optionally, the insert includes a tapered plug, the cross-sectional area of ​​which gradually decreases vertically.

[0016] Optionally, the lower end of the tapered plug has a hole, which communicates with the chamber.

[0017] Optionally, the sidewall of the tapered plug is provided with a plurality of holes II, all of which are connected to the chamber II.

[0018] Optionally, the sampling assembly further includes a handle rod, which is disposed at the upper end of the insertion rod and is connected to the insertion rod in a T-shape.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a device for detecting the elevation of the diaphragm wall casting surface, including a support frame, an insert, and a sampling component. When testing the elevation of the diaphragm wall pouring surface, first, attach the sampling tube to the upper end of the insert to ensure the second chamber is sealed. With the insert facing downwards, insert the testing device into the pouring cavity through the pouring port of the diaphragm wall until the insert is below the concrete mortar pouring surface. Then, move the insert rod vertically, causing it to move the sampling tube upwards and away from the insert, thus connecting the opening between the first and second chambers. At this point, the concrete mortar will enter the first chamber through the opening in the side wall of the support frame and flow into the second chamber. Move the insert rod vertically again, causing it to move the sampling tube downwards and attach it to the upper end of the insert, thus sealing the second chamber. Record the length of the support frame extending into the pouring cavity at this point. Finally, remove the testing device from the pouring cavity and check if there is concrete mortar in the second chamber. The elevation of the diaphragm wall pouring surface can be calculated using the length of the support frame extending into the pouring cavity and the elevation of the pouring port. By setting up a support frame, inserts, and sampling components, when testing the elevation of the diaphragm wall's pouring surface, workers can apply downward pressure to the support frame to ensure that the inserts can be inserted below the actual pouring surface of the diaphragm wall. This allows for more accurate testing of the diaphragm wall's pouring surface elevation, ensuring the accuracy of the test results. The structure is simple, easy to operate, and avoids affecting the construction quality of the diaphragm wall. Attached Figure Description

[0021] Figure 1 This is a first view of the device for detecting the elevation of the diaphragm wall casting surface provided in this embodiment of the utility model;

[0022] Figure 2 This is a second view of the device for detecting the elevation of the diaphragm wall casting surface provided in this embodiment of the utility model.

[0023] In the picture:

[0024] 1. Support frame; 11. Support rod; 111. Chamber 1; 12. Connector; 121. Connecting rod; 122. Connecting ring; 13. Reinforcing rod;

[0025] 2. Insertion component; 21. Second chamber;

[0026] 3. Sampling assembly; 31. Insertion rod; 32. Sampling tube; 33. Handle rod. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] This embodiment provides a device for detecting the elevation of the diaphragm wall casting surface, such as... Figure 1 and Figure 2 As shown, this testing device can be used to detect the elevation of the diaphragm wall's pouring surface. It can accurately detect the elevation of the diaphragm wall's pouring surface, ensuring the accuracy of the test results. The device has a simple structure, is easy to operate, and avoids affecting the construction quality of the diaphragm wall.

[0032] like Figure 1 and Figure 2As shown, the device for detecting the elevation of the diaphragm wall casting surface includes a support frame 1, an insert 2, and a sampling assembly 3. The support frame 1 has a first chamber 111 and an opening that are interconnected, with the opening located on the side wall of the support frame 1. The insert 2 is located at the lower end of the support frame 1 and has a second chamber 21 that communicates with the first chamber 111. The sampling assembly 3 is located within the first chamber 111 and includes a connected rod 31 and a sampling tube 32. The end of the rod 31 facing away from the sampling tube 32 extends out of the first chamber 111 and can move vertically. The sampling tube 32 has a sealed state where it is fastened to the upper end of the insert 2 and a sampling state where it is away from the insert 2. In the sealed state, the sampling tube 32 can seal the second chamber 21; in the sampling state, the opening communicates with the second chamber 21 through the first chamber 111.

[0033] When testing the elevation of the diaphragm wall pouring surface, first, attach the sampling tube 32 to the upper end of the insert 2 to ensure the second chamber 21 is sealed. Then, with the insert 2 facing downwards, insert the testing device into the pouring chamber through the diaphragm wall pouring opening until the insert 2 is below the concrete mortar pouring surface. Next, move the insert rod 31 vertically, causing it to move the sampling tube 32 upwards and away from the insert 2, thus connecting the opening through the first chamber 111 to the second chamber 21. At this point, the concrete mortar will flow through the supporting frame. The sample enters chamber 111 through the opening in the side wall and flows into chamber 21. The insertion rod 31 is then moved vertically, causing the sampling cylinder 32 to move downwards and be secured to the upper end of the insertion piece 2, thus sealing chamber 21. The length of the support frame 1 extending into the pouring cavity is recorded at this point. Finally, the detection device is removed from the pouring cavity to check for the presence of concrete mortar in chamber 21. The elevation of the diaphragm wall pouring surface can be calculated using the length of the support frame 1 extending into the pouring cavity and the elevation of the pouring opening. By setting up the support frame 1, insertion piece 2, and sampling assembly 3, when detecting the elevation of the diaphragm wall pouring surface, workers can apply downward pressure to the support frame 1 to ensure that the insertion piece 2 can be inserted below the actual pouring surface of the diaphragm wall. This allows for relatively accurate detection of the diaphragm wall pouring surface elevation, ensuring the accuracy of the test results. The structure is simple, the operation is convenient, and it avoids affecting the construction quality of the diaphragm wall.

[0034] Optionally, such as Figure 1 and Figure 2As shown, the support frame 1 includes multiple support rods 11 spaced apart circumferentially and multiple connectors 12. The multiple support rods 11 enclose a chamber 111, with an opening between adjacent support rods 11 communicating with the chamber 111. Thus, the opening extends axially along the support rod 11. The multiple connectors 12 are spaced apart axially along the support rods 11 and located within the chamber 111. Each connector 12 is connected to one of the support rods 11, and the end of the insertion rod 31 facing away from the sampling cylinder 32 passes through the multiple connectors 12 and extends out of the chamber 111. By providing the support rods 11 and connectors 12, the sampling assembly 3 is supported, and the axial extension of the openings along the support rods 11 facilitates the entry of concrete mortar into the chamber 21, making sampling and testing easier.

[0035] Optionally, such as Figure 1 and Figure 2 As shown, the connector 12 includes multiple connecting rods 121 and a connecting ring 122. The multiple connecting rods 121 are circumferentially spaced and connected to the sidewalls of the connecting ring 122, with each connecting rod 121 corresponding to a specific support rod 11. The end of each connecting rod 121 facing away from the connecting ring 122 is connected to the sidewall of the support rod 11, and the insertion rod 31 passes through the connecting ring 122. By connecting multiple connecting rods 121 to the support rods 11 in a one-to-one correspondence, the connection strength between the support rods 11 can be strengthened, ensuring the overall stability of the structure. The connection between the multiple connecting rods 121 and the connecting ring 122 allows the insertion rod 31 to pass through the connecting ring 122, enabling workers to vertically pull out or insert the insertion rod 31 into the connecting ring 122, thus facilitating flexible switching between a sealed state and a sampling state.

[0036] For example, the support rod 11 includes a galvanized steel pipe.

[0037] In this embodiment, four support rods 11 are provided, and the four support rods 11 are arranged in a square array. Two connectors 12 are provided, and correspondingly, each connector 12 is provided with four connecting rods 121.

[0038] In other embodiments, other numbers of support rods 11 and connectors 12 may be provided as needed, and each connector 12 may be provided with other numbers of connecting rods 121. The shape of the support rod 11 may also be circular or the like, and is not limited here.

[0039] Optionally, the support frame 1 also includes multiple reinforcing rods 13. Each reinforcing rod 13 corresponds one-to-one with a multiple connector 12, and the reinforcing rods 13 are circumferentially arranged around the multiple support rods 11. By providing reinforcing rods 13, the connection strength between the multiple support rods 11 can be further strengthened, the structural stability of the support frame 1 can be further improved, and the accuracy of the test results can be guaranteed.

[0040] For example, three reinforcing rods 13 are provided.

[0041] In some embodiments, the connector 12 includes a connecting plate. A plurality of support rods 11 are circumferentially arranged and connected to the sidewalls of the connecting plate, such that the support rods 11 are perpendicular to the connecting plate. The connecting plate has a through hole through which the insertion rod 31 passes.

[0042] Optionally, the insertion component 2 includes a tapered plug, the cross-sectional area of ​​which gradually decreases vertically. By setting the insertion component 2 as a tapered plug, the insertion resistance can be reduced, which is beneficial for inserting the tapered plug into the concrete mortar of the diaphragm wall, ensuring that the insertion component 2 is inserted into the actual poured surface, and ensuring the accuracy of the test results.

[0043] Optionally, the lower end of the conical plug has a hole, which communicates with the second chamber 21. By providing the hole, moisture in the concrete mortar can be drained, and negative pressure can be avoided in the second chamber 21, preventing the conical plug from being absorbed by the concrete mortar. This balances the air pressure inside the second chamber 21 with the outside air, reducing the pull-out resistance of the insert 2.

[0044] In some embodiments, the sidewall of the tapered plug has multiple holes II, all of which communicate with the chamber II 21. By providing multiple holes II, it is beneficial to quickly drain the moisture from the concrete mortar, further reducing the pull-out resistance of the insert 2.

[0045] Optionally, such as Figure 1 and Figure 2 As shown, the sampling assembly 3 also includes a handle 33. The handle 33 is located at the upper end of the insertion rod 31, and the handle 33 and the insertion rod 31 are connected in a T-shape. By setting the handle 33 and the insertion rod 31 to form a T-shape, the operator can move the insertion rod 31 up or down by holding the handle 33, thereby switching the sampling cylinder 32 between the sampling state and the sealing state. The handle 33 provides the operator with a base for applying force, which is convenient for sampling and testing.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for detecting the elevation of the cast-in-place surface of a diaphragm wall, characterized in that, include: The support frame (1) is provided with a cavity (111) and an opening that are interconnected, the opening being located on the side wall of the support frame (1). Insert (2) is provided at the lower end of the support frame (1), and the insert (2) is provided with a second chamber (21) communicating with the first chamber (111); A sampling assembly (3) is disposed in the first chamber (111). The sampling assembly (3) includes a connected insertion rod (31) and a sampling tube (32). The end of the insertion rod (31) away from the sampling tube (32) extends out of the first chamber (111) and the insertion rod (31) can move vertically. The sampling tube (32) has a sealed state that is fastened to the upper end of the insertion member (2) and a sampling state that is away from the insertion member (2). In the sealed state, the sampling tube (32) can seal the second chamber (21). In the sampling state, the opening is connected to the second chamber (21) through the first chamber (111).

2. The device for detecting the elevation of the diaphragm wall casting surface according to claim 1, characterized in that, The support frame (1) includes a plurality of support rods (11) spaced apart circumferentially and a plurality of connectors (12). The plurality of support rods (11) surround the first chamber (111). An opening communicating with the first chamber (111) is formed between two adjacent support rods (11). The plurality of connectors (12) are spaced apart axially along the support rods (11) and located in the first chamber (111). Each connector (12) is connected to the plurality of support rods (11). The end of the insertion rod (31) away from the sampling tube (32) passes through the plurality of connectors (12) and extends out of the first chamber (111).

3. The device for detecting the elevation of the diaphragm wall casting surface according to claim 2, characterized in that, The connector (12) includes a plurality of connecting rods (121) and a connecting ring (122). The plurality of connecting rods (121) are circumferentially spaced and connected to the side wall of the connecting ring (122). The plurality of connecting rods (121) correspond one-to-one with the plurality of supporting rods (11). The end of the connecting rod (121) facing away from the connecting ring (122) is connected to the side wall of the supporting rod (11). The insert (31) passes through the connecting ring (122).

4. The device for detecting the elevation of the diaphragm wall casting surface according to claim 3, characterized in that, The support frame (1) also includes a plurality of reinforcing rods (13), each of which corresponds to a plurality of connectors (12), and the reinforcing rods (13) are arranged circumferentially around the plurality of supporting rods (11).

5. The device for detecting the elevation of the diaphragm wall casting surface according to claim 2, characterized in that, The connector (12) includes a connecting plate, and a plurality of the support rods (11) are arranged circumferentially around and connected to the side wall of the connecting plate so that the support rods (11) are perpendicular to the connecting plate. The connecting plate has a through hole, and the insert rod (31) passes through the through hole.

6. The device for detecting the elevation of the diaphragm wall casting surface according to claim 2, characterized in that, The support rod (11) comprises a galvanized steel pipe.

7. The device for detecting the elevation of the diaphragm wall casting surface according to any one of claims 1-6, characterized in that, The insert (2) includes a tapered plug, the cross-sectional area of ​​which gradually decreases vertically.

8. The device for detecting the elevation of the diaphragm wall casting surface according to claim 7, characterized in that, The lower end of the tapered plug has a hole, which is connected to the second chamber (21).

9. The device for detecting the elevation of the diaphragm wall casting surface according to claim 7, characterized in that, The side wall of the tapered plug is provided with multiple holes, and all of the holes are connected to the chamber (21).

10. The device for detecting the elevation of the diaphragm wall casting surface according to any one of claims 1-6, characterized in that, The sampling component (3) also includes a handle (33), which is located at the upper end of the insertion rod (31) and is connected to the insertion rod (31) in a T-shape.

Images