A pile body acceleration sensor fixing device

Abstract

The utility model provides a kind of pile body acceleration sensor fixing device, it is related to piling technical field, including pipe pile, support sleeve and protection piece;Pipe pile includes reinforcement cage and concrete layer, reinforcement cage includes stirrup and longitudinal reinforcement, multiple stirrups are arranged in parallel along vertical direction, longitudinal reinforcement is arranged along the perimeter direction of stirrup and is connected with each stirrup, concrete layer is wrapped reinforcement cage;Support sleeve is embedded in concrete layer and is connected with longitudinal reinforcement vertically;Protection piece includes splicing part and protection pipe, splicing part is inserted into support sleeve and is welded with support sleeve, protection pipe is connected with splicing part and is parallel to longitudinal reinforcement, acceleration sensor is fixed in protection pipe. By having acceleration sensor fixed in protection pipe, protection pipe is welded with support sleeve by splicing part, support sleeve is embedded in concrete layer, acceleration sensor cannot easily fall off, and the continuity of piling monitoring data and the reliability of measurement can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pile driving technology, and in particular to a pile acceleration sensor fixing device. Background Technology

[0002] Precast pipe piles are widely used in building construction, bridge engineering, and port engineering due to their advantages such as high construction efficiency, stable quality, and high single pile bearing capacity. Currently, commonly used pile driving techniques mainly include three types: hammer driving, static pressure driving, and vibratory driving. Among these, hammer driving is the most commonly used method due to its wide applicability and strong penetration ability. During hammer driving, the pile body is subjected to varying degrees of impact loads, which can easily lead to cracks, fractures, and other damage, severely affecting its structural integrity and bearing capacity. Therefore, it is necessary to install accelerometers to acquire real-time acceleration data of the pile body to accurately analyze the stress and motion state of the pile.

[0003] Traditional methods for fixing accelerometers, such as adhesive bonding, are prone to signal interference due to the elastic properties of the adhesive. Furthermore, they are susceptible to sensor detachment due to environmental factors such as high temperature and humidity, making it difficult to ensure the continuity of pile driving monitoring data and the reliability of measurements. Utility Model Content

[0004] In view of this, the present invention proposes a pile acceleration sensor fixing device to solve the technical problems mentioned in the background art, which are that traditional acceleration sensor fixing methods are prone to signal interference and are easily affected by environmental factors such as high temperature and humidity, which can easily lead to sensor detachment and make it difficult to ensure the continuity of pile driving monitoring data and the reliability of measurement.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a fixing device for a pile acceleration sensor, including a pipe pile, a support sleeve, and a protective component, wherein: The pipe pile includes a steel cage and a concrete layer. The steel cage includes stirrups and longitudinal bars. Multiple stirrups are arranged in parallel along the vertical direction. The longitudinal bars are arranged along the perimeter of the stirrups and are connected to each stirrup. The concrete layer encloses the steel cage. The support sleeve is embedded in the concrete layer and is perpendicularly connected to the longitudinal reinforcement; The protective component includes a plug-in part and a protective tube. The plug-in part is inserted into the support sleeve and welded to the support sleeve. The protective tube is connected to the plug-in part and parallel to the longitudinal rib. An acceleration sensor is fixed inside the protective tube.

[0006] Based on the above technical solutions, preferably, the system also includes a tray, on which the acceleration sensor is fixedly mounted, and the tray is connected to the bottom of the protective tube.

[0007] Based on the above technical solutions, preferably, a magnet is installed in the tray, and the protective tube is made of magnetic metal.

[0008] Based on the above technical solution, preferably, a connecting rib is welded to each side of the support sleeve, and the two connecting ribs are connected to the two adjacent longitudinal ribs by binding with iron wire.

[0009] Based on the above technical solutions, preferably, the support sleeve is made of a shortened steel pipe, and both ends of the steel pipe are sealed with tape.

[0010] Based on the above technical solutions, preferably, the support sleeve is made of Q235 carbon steel with no rust or deformation on the surface.

[0011] Based on the above technical solutions, preferably, the length of the support sleeve is the same as the thickness of the concrete layer.

[0012] Based on the above technical solutions, preferably, the longitudinal bars and stirrups are connected by welding.

[0013] The pile acceleration sensor fixing device of this utility model has the following advantages over the prior art: (1) The support sleeve is pre-embedded in the concrete layer and connected perpendicularly to the longitudinal reinforcement. The protective component includes a plug and a protective tube. The plug is inserted into the support sleeve and welded to the support sleeve. The protective tube is connected to the plug and parallel to the longitudinal reinforcement. An acceleration sensor is fixed inside the protective tube. The protective tube is welded to the support sleeve through the plug. The support sleeve is pre-embedded in the concrete layer. The acceleration sensor will not easily fall off, which can ensure the continuity of pile driving monitoring data and the reliability of measurement. (2) The accelerometer is fixedly installed by the tray. The tray is connected to the bottom of the protective tube. The accelerometer is installed by the tray. After the test is completed, the accelerometer can be removed from the tray and then the tray is disassembled. This avoids damage caused by directly removing the accelerometer from the protective tube. The accelerometer can be recycled and reused. (3) A connecting bar is welded to each side of the support sleeve, and the two connecting bars are tied to the two adjacent longitudinal bars with iron wire to position and connect the support sleeve so as to facilitate the subsequent concrete layer construction. (4) The support sleeve is made of a short steel pipe. Both ends of the steel pipe are sealed with tape to prevent concrete slurry from seeping into the support sleeve and causing blockage during the precast pipe pile process. This facilitates the welding of the support sleeve and the plug-in part and improves the convenience of device assembly. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the pile acceleration sensor fixing device in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the pile acceleration sensor fixing device (without a concrete layer) in an embodiment of this utility model; Figure 3 This is a schematic diagram of the connection between the support sleeve and the reinforcing cage in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the protective component in an embodiment of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1-Pipe pile, 2-Support sleeve, 3-Protective component, 4-Plate, 5-Connecting bar, 6-Tape; 100 - Accelerometer; 11-Reinforcing cage, 111-Stirrups, 112-Longitudinal reinforcement, 12-Concrete layer; 31-Connector, 32-Protective tube. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] Reference Figures 1-4 As shown in the embodiment of this utility model, a pile acceleration sensor fixing device is proposed, including a pipe pile 1, a support sleeve 2, and a protective component 3, wherein: The pipe pile 1 includes a reinforcing cage 11 and a concrete layer 12. The reinforcing cage 11 includes stirrups 111 and longitudinal bars 112. Multiple stirrups 111 are arranged in parallel along the vertical direction. The longitudinal bars 112 are arranged along the perimeter of the stirrups 111 and are connected to each stirrup 111. The concrete layer 12 encloses the reinforcing cage 11. After the reinforcing cage 11 is manufactured, it conforms to the provisions of the "Technical Specification for Pipe Piles" (JGJ 94-2008). The support sleeve 2 is embedded in the concrete layer 12 and is perpendicularly connected to the longitudinal reinforcement 112; The protective component 3 includes a connector 31 and a protective tube 32. The connector 31 is inserted into and welded to the support sleeve 2. The protective tube 32 is connected to the connector 31 and parallel to the longitudinal rib 112. An acceleration sensor 100 is fixed inside the protective tube 32. The connector 31 can be a steel sheet; the protective tube 32 can be a hollow square tube with an open top, formed by welding five steel plates. The steel plates are made of ordinary carbon steel with a thickness of 3-5 mm. The connector 31 and the steel plate at the bottom of the protective tube 32 can be a single piece of steel.

[0019] The pile acceleration sensor fixing device proposed in this embodiment is embedded in the concrete layer 12 by the support sleeve 2 and perpendicularly connected to the longitudinal reinforcement 112. The protective component 3 includes a plug part 31 and a protective tube 32. The plug part 31 is inserted into the support sleeve 2 and welded to the support sleeve 2. The protective tube 32 is connected to the plug part 31 and parallel to the longitudinal reinforcement 112. An acceleration sensor 100 is fixed inside the protective tube 32. The protective tube 32 is welded to the support sleeve 2 through the plug part 31. The support sleeve 2 is embedded in the concrete layer 12, and the acceleration sensor 100 will not easily fall off, which can ensure the continuity of pile driving monitoring data and the reliability of measurement.

[0020] In some embodiments, the pile acceleration sensor fixing device further includes a tray 4, on which the acceleration sensor 100 is fixedly mounted, and the tray 4 is connected to the bottom of the protective tube 32. The acceleration sensor 100 can be threaded onto the tray 4, facilitating the removal and installation of the acceleration sensor 100. After testing, the acceleration sensor 100 can be removed from the tray 4, and then the tray 4 can be disassembled, avoiding damage caused by directly removing the acceleration sensor 100 from the protective tube 32, and allowing the acceleration sensor 100 to be recycled and reused.

[0021] In some embodiments, a magnet is installed in the tray 4, and the protective tube 32 is made of magnetic metal. By attracting the bottom of the protective tube 32 with the magnet, the tray 4 can be fixed in the protective tube 32. The attraction is relatively firm, and the installation and disassembly are convenient, which can improve the efficiency of assembly and maintenance.

[0022] In some embodiments, a connecting rib 5 is welded to each side of the support sleeve 2, and the two connecting ribs 5 are connected to the two adjacent longitudinal ribs 112 by binding with wire. The connecting rib 5 is approximately 30cm long and is made of the same type of steel bar as the longitudinal ribs 112. The two connecting ribs 5 are aligned with the adjacent longitudinal ribs 112, and the connecting ribs 5 and the longitudinal ribs 112 are tied together with thin wire at 2cm intervals, fixing the support sleeve 2 to the outside of the reinforcing cage 11. This positioning and connection of the support sleeve 2 facilitates the subsequent construction of the concrete layer 12.

[0023] In some embodiments, the support sleeve 2 is made of a shortened steel pipe, with both ends of the steel pipe sealed with tape 6. Sealing the ends of the steel pipe with tape 6 prevents concrete grout from seeping into the support sleeve 2 and causing blockage during the prefabrication of the pipe pile 1, thus facilitating welding of the support sleeve 2 to the insertion part 31 and improving the ease of assembly. After the pipe pile 1 is fabricated, the location of the pre-embedded support sleeve 2 is found on the outer wall, the tape 6 at both ends is torn off, and a special tool is used to clean any residue inside the support sleeve 2 to ensure there are no impurities inside the pipe. The tape 6 can be made of black polyester tape, which is heat-resistant.

[0024] In some embodiments, the support sleeve 2 is made of Q235 carbon steel, with no rust or deformation on the surface. The wall thickness is not less than 2mm to ensure its strength meets requirements. The absence of rust and deformation on the surface facilitates the insertion and welding of the connector 31.

[0025] In some embodiments, the length of the support sleeve 2 is the same as the thickness of the concrete layer 12, which facilitates welding with the insertion part 31 and ensures that the support sleeve 2 does not protrude from the concrete layer 12. This makes it more aesthetically pleasing and more integrated with the concrete layer 12, and facilitates load-bearing.

[0026] In some embodiments, the longitudinal reinforcement 112 and the stirrups 111 are connected by welding, which shall comply with the provisions of the Technical Specification for Pipe Piles in Buildings (JGJ 94-2008).

[0027] The working principle of the pile acceleration sensor fixing device in this embodiment of the utility model is as follows: S1: Based on the thickness of the protective layer of the pipe pile 1, cut the long steel pipe into support sleeves 2 of equal length; S2: Fix the support sleeve 2 to the outside of the reinforcing cage 11 of the pipe pile 1; the specific process is as follows: S21: Two parallel connecting bars 5 are symmetrically welded on both sides of the support sleeve 2. The length of the connecting bars 5 is about 30cm. The connecting bars 5 are made of steel bars of the same type as the longitudinal bars 112 of the pipe pile 1. S22: Use thin iron wire to tie and fix the two connecting bars 5 to the steel cage 11; S3: After the support sleeve 2 is fixed, use electrical tape 6 to tightly seal both ends of the support sleeve 2 to prevent concrete slurry from seeping into the pipe during the precast pipe pile 1 process; S4: Precast pipe pile 1. According to relevant standards and specifications such as "Prestressed Concrete Pipe Pile 1 by Pretensioning Method" (GB 13476-2009), the prestressed concrete pipe pile 1 is precast in the factory using the pretensioning method. S5: After the pipe pile 1 reaches the design strength, locate the position of the pre-embedded support sleeve 2 on the outer wall, and use special tools to clean the residue inside the support sleeve 2 to ensure that there are no impurities inside the pipe; S6: Construct a sensor protection device; the specific steps are as follows: S61: Prepare a long steel sheet. According to the size design requirements, first use a steel ruler to measure and mark it with a marker. Then use an automatic hacksaw to cut along the marked lines on the steel sheet. S62: First, weld 5 steel plates together to form a hollow square tube with an open top, and then weld the insertion part 31 to the bottom steel plate. S7: Weld the protective device inside the support sleeve 2; the specific steps are as follows: S71: The insertion part 31 is partially embedded inside the support sleeve 2, with part of it exposed to the outside, to ensure sufficient space for welding; S72: The insertion part 31 must fit tightly against the inner wall of the support sleeve 2, and the support sleeve 2 and the insertion part 31 must be welded firmly by spot welding. S8: Magnetically fix the tray 4 directly onto the protective device, and finally screw the accelerometer 100 onto the tray 4 vertically. S9: After the piling construction is completed, first disassemble the acceleration sensor 100, then remove the tray 4 to realize the recycling and reuse of the measuring instrument.

[0028] 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 device for fixing a pile acceleration sensor, characterized in that, Includes pipe piles, support sleeves, and protective components, among which: The pipe pile includes a steel cage and a concrete layer. The steel cage includes stirrups and longitudinal bars. Multiple stirrups are arranged in parallel along the vertical direction. The longitudinal bars are arranged along the perimeter of the stirrups and are connected to each stirrup. The concrete layer encloses the steel cage. The support sleeve is embedded in the concrete layer and is perpendicularly connected to the longitudinal reinforcement; The protective component includes a plug-in part and a protective tube. The plug-in part is inserted into the support sleeve and welded to the support sleeve. The protective tube is connected to the plug-in part and parallel to the longitudinal rib. An acceleration sensor is fixed inside the protective tube.

2. The pile acceleration sensor fixing device as described in claim 1, characterized in that, It also includes a tray, on which the accelerometer is fixedly mounted, and the tray is connected to the bottom of the protective tube.

3. The pile acceleration sensor fixing device as described in claim 2, characterized in that, The tray is equipped with magnets, and the protective tube is made of magnetic metal.

4. The pile acceleration sensor fixing device as described in claim 1, characterized in that, A connecting rib is welded to each side of the support sleeve, and the two connecting ribs are connected to the two adjacent longitudinal ribs by binding with iron wire.

5. The pile acceleration sensor fixing device as described in claim 1, characterized in that, The support sleeve is made of a shortened steel pipe, and both ends of the steel pipe are sealed with tape.

6. The pile acceleration sensor fixing device as described in claim 5, characterized in that, The support sleeve is made of Q235 carbon steel, and its surface is free of rust and deformation.

7. The pile acceleration sensor fixing device as described in claim 1, characterized in that, The length of the support sleeve is the same as the thickness of the concrete layer.

8. The pile acceleration sensor fixing device as described in any one of claims 1-7, characterized in that, The longitudinal bars and stirrups are connected by welding.

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