An improved device for combining acoustic logging pipes and post-grouting pipes in engineering pile foundations.

Abstract

This utility model discloses an improved shared device for acoustic logging pipes and post-grouting pipes in engineering pile foundations. It includes multiple shared acoustic logging and post-grouting pipes detachably installed on the stirrups of a reinforcing cage, and further includes: a plug detachably installed at the top of the shared acoustic logging and post-grouting pipes; a grouting joint connected to the bottom of the shared acoustic logging and post-grouting pipes, wherein several grouting holes are drilled through the grouting joint, and each grouting hole outlet is equipped with an anti-clogging cap that can be opened and closed to reduce the probability of mud and sand entering the pile body and causing blockage; and several support components, each connected to the working end of the grouting joint. This utility model has a simple structure and a novel and reasonable design, achieving the dual purpose of serving as both an integrity testing channel and a grouting pipe. It can prevent soil or gravel and other debris from entering the shared acoustic logging and post-grouting pipes, and allows the grouting material to be injected more evenly into the shared acoustic logging and post-grouting pipes.

Description

Technical Field

[0001] This utility model relates to a device, specifically an improved device for combining an acoustic logging pipe and a post-grouting pipe for engineering pile foundations, belonging to the field of building pile foundation engineering technology. Background Technology

[0002] Generally speaking, in the field of building construction, pile foundations, as an important load-bearing component of buildings, are widely used in various foundation engineering projects due to their high bearing capacity, slow settlement rate, and small settlement amount. Their construction quality and performance directly affect the safety of the entire building. In traditional pile foundation construction, sonic logging pipes and grouting pipes are often installed separately, which not only increases construction costs but also extends the construction period.

[0003] Currently, traditional pile foundation construction still has the following disadvantages in certain construction situations:

[0004] On the one hand, during current pile foundation construction, when the pile is driven into the soil, mud and sand in the soil often enter the pile body through the grouting holes. This reduces the amount of grout injected and worsens the uniformity of grouting, thus affecting the bearing capacity and service life of the pile foundation. Furthermore, during grouting, the grout cannot flow out smoothly, and in severe cases, it can clog the grouting holes, leading to grouting difficulties and low efficiency. In extreme cases, grouting may not be possible at all, requiring the pile foundation to be removed and manually cleaned before reuse, which is generally very inconvenient.

[0005] On the other hand, when using traditional methods to grout piles into the stratum, the overflow holes evenly distributed around the borehole wall are small, and the grout cannot overflow from the bottom of the pile when it is directly inserted into the stratum, resulting in grout blockage, low grouting efficiency, and poor effect.

[0006] On the other hand, the steel reinforcement cages are installed in sections. After the sonic logging pipe is installed in the first section of the steel reinforcement cage, it is generally inconvenient to rotate it. Therefore, it is not convenient to insert the sonic logging pipe into the next section of the steel reinforcement cage at the sectioning position of the two steel reinforcement cages. In order to address the above problems, this utility model document proposes a shared device for the sonic logging pipe and the post-grouting pipe of the engineering pile.

[0007] Therefore, the key to solving the above-mentioned technical problems lies in developing an improved device that combines acoustic logging pipes and post-grouting pipes for engineering pile foundations, which is more practical and has higher operational reliability. Summary of the Invention

[0008] To address the numerous defects and shortcomings in the aforementioned background technology, this utility model has made improvements and innovations. The aim is to provide a simple, novel, and reasonable design with an anti-clogging cover that prevents blockages during grouting, ensuring grouting quality and construction efficiency. The anti-clogging cover also prevents debris such as soil or gravel from entering the shared pipe for acoustic testing and post-grouting, ensuring the purity of the grouting material. Furthermore, it allows the grouting material to be injected more evenly into the shared pipe, improving grouting efficiency and quality. Simultaneously, it serves as both a detection channel for integrity testing and a grouting pipe, achieving multiple uses in one device.

[0009] Another objective of this invention is to provide a support component at the working end of the grouting joint, which supports and facilitates the smooth and rapid insertion of the shared pipe for acoustic testing and post-grouting into the foundation, thereby achieving smooth grout overflow, reaching the required grouting pressure, and meeting the vertical compressive bearing capacity requirements of the foundation.

[0010] Another objective of this invention is that the rotating component facilitates the installation and adjustment of the shared pipe for acoustic testing and post-grouting, thereby making it easier to connect the shared pipe for acoustic testing and post-grouting at the segmented positions.

[0011] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides an improved shared device for an engineering pile foundation sonic logging pipe and a post-grouting pipe, achieved through the following design structure and the following technical solution:

[0012] As an improvement to the shared device for acoustic logging pipes and post-grouting pipes in engineering pile foundations of this utility model, it includes multiple acoustic logging and post-grouting shared pipes that are detachably installed on the stirrups of the reinforcing cage and are arranged at equal or unequal intervals, and further includes:

[0013] A plug is detachably installed on the top of the shared pipe for sonic logging and post-grouting to prevent impurities from entering the shared pipe when not in use.

[0014] The grouting joint is connected to the bottom of the common pipe for sonic logging and post-grouting to achieve grouting. Several grouting holes are opened through the grouting joint, and each grouting hole outlet is equipped with an anti-clogging cap that can be opened and closed to reduce the probability of mud and sand entering the pile body and causing blockage.

[0015] Several support components are connected to the working end of the grouting joint. They are used to provide support and facilitate the smooth and rapid insertion of the shared pipe for acoustic testing and post-grouting into the foundation, so as to achieve the purpose of smooth grout overflow.

[0016] As an improvement of the present invention, the anti-clogging cover is a circular or shell-shaped thin plate component, which matches the shape and size of the grouting hole.

[0017] The grouting hole can be a circular hole, a conical hole, an elongated hole, or a combination of circular, conical, and elongated holes.

[0018] As a further improvement of the present invention, the grouting joint is a flat structure, and the grouting joint of the flat structure is detachably or fixedly connected to the common pipe for acoustic testing and post-grouting.

[0019] As a further improvement of the present invention, the inner wall of the stirrup is fixedly connected with a plurality of fixing rings adapted to the common pipe for acoustic testing and post-grouting.

[0020] As a further improvement of the present invention, it also includes:

[0021] Several support components are connected to the working end of the grouting joint to provide support and facilitate the smooth and rapid insertion of the shared pipe for acoustic testing and post-grouting into the foundation, so as to achieve the purpose of smooth grout overflow.

[0022] Several bottom grouting holes are provided, and each bottom grouting hole is opened through the bottom end face of the grouting joint.

[0023] As a further improvement of the present invention, the fixed ends of the support member are symmetrically connected to the bottom two sides of the grouting joint; the working end of the support member is needle-shaped or pen-shaped.

[0024] As a further improvement of the present invention, the bottom grouting hole is a circular hole, a conical hole, an elongated hole, or a combination of circular holes, conical holes, and elongated holes; and an anti-clogging cap is provided at the outlet of each bottom grouting hole in a corresponding openable and closable manner.

[0025] As a further improvement of the present invention, the common pipe for acoustic testing and post-grouting is a tubular component, and the total number of such tubular components is set to at least 3.

[0026] As a further improvement of the present invention, it also includes a rotating assembly for rotating the common pipe for acoustic testing and post-grouting. The rotating assembly includes a limiting plate welded to the outer wall of the common pipe for acoustic testing and post-grouting. The limiting plate is located above the fixing ring. The bottom of the limiting plate is provided with a groove that matches the fixing ring. The common pipe for acoustic testing and post-grouting rotates on the top of the fixing ring by means of the groove.

[0027] It also includes wrenches that are compatible with the limit plate and retaining ring.

[0028] As a further improvement to the present invention, the outer wall of the shared pipe for acoustic testing and post-grouting is fixed with a limiting protrusion, and the inner wall of the plug is provided with an annular groove that matches the limiting protrusion. The plug and the shared pipe for acoustic testing and post-grouting are fixed by means of the annular groove and the limiting protrusion.

[0029] The working principle is as follows: Before using the improved engineering pile foundation sonic logging pipe and post-grouting pipe shared device, the operator only needs to move the already processed device to the designated construction location for use by means of appropriate mobile handling equipment or directly by manual labor.

[0030] In use, construction workers only need to determine the number of shared pipes for sonic logging and post-grouting according to construction requirements. Based on the number of shared pipes, corresponding fixing rings are welded onto the stirrups, ensuring that multiple fixing rings are concentric. After the fixing rings are welded, the shared pipes for sonic logging and post-grouting are inserted into the fixing rings of the first section of the reinforcing cage. When installing the reinforcing cage in sections, the inner wall of the wrench is brought into contact with the shared pipes for sonic logging and post-grouting from above the limiting plate, and then moved downwards to engage the wrench with the limiting plate. Then, the handle of the wrench is rotated, causing the shared pipes for sonic logging and post-grouting to rotate circumferentially. While rotating, the fixing rings on the next section of the reinforcing cage are inserted, facilitating the connection of the shared pipes for sonic logging and post-grouting at the section locations. After all the reinforcing cages are installed, the limiting plate is brought to contact with the uppermost section. For the fixing ring, in addition to ensuring the stability of the shared pipe for sonic logging and post-grouting, a simple binding with thin iron wire can be used. After fixing the shared pipe for sonic logging and post-grouting, the reinforcing cage is lowered into the pile hole. After lowering, subsequent concrete pouring is carried out. After pile formation, the protective rubber sleeve at the nozzle position at the bottom of the pipe is split twice with clean water. The first time is 3-5 hours after pile formation, and the second time is 24 hours after pile formation. This is used to open the grout outlet at the nozzle position. When the underwater concrete strength of the drilled cast-in-place pile is not less than 70% of the design strength and not less than 15 MPa, and the curing period is not less than 7 days, the plug is removed. The integrity of the pile foundation can be tested using the shared pipe for sonic logging and post-grouting. After the test is completed, grouting operation can begin for each shared pipe for sonic logging and post-grouting.

[0031] The beneficial effects of this utility model compared with the prior art are:

[0032] 1. This utility model has a simple structure and a novel and reasonable design. The anti-clogging cover is designed to prevent clogging during the grouting process, ensuring grouting quality and construction efficiency. The anti-clogging cover can also prevent soil or gravel and other debris from entering the shared pipe for sonic logging and post-grouting, ensuring the purity of the grouting material. It also allows the grouting material to be injected more evenly into the shared pipe for sonic logging and post-grouting, improving grouting efficiency and quality. At the same time, it serves as both a detection channel for integrity testing and a grouting pipe, achieving the purpose of multiple uses in one device.

[0033] 2. This utility model provides a support component at the working end of the grouting joint, which supports the joint and facilitates the smooth and rapid insertion of the shared pipe for acoustic testing and post-grouting into the foundation, thereby achieving smooth grout overflow, reaching the grouting pressure, and meeting the vertical compressive bearing capacity requirements of the foundation.

[0034] 3. Because this utility model is equipped with a rotating component, it can facilitate the installation and adjustment of the shared pipe for acoustic testing and post-grouting, thereby facilitating the connection of the shared pipe for acoustic testing and post-grouting at the segmented position.

[0035] 4. This utility model realizes the integrated design of sonic logging pipe and grouting pipe, which shortens the construction period and improves construction efficiency. Through the design of the rotating component, the shared pipe for sonic logging and post-grouting can be rotated easily, so that when the steel cage is installed in sections, the fixing ring on the next section of the steel cage can be inserted while rotating, which facilitates the connection of the shared pipe for sonic logging and post-grouting at the section position.

[0036] 5. This utility model realizes the integrated design of sonic logging pipe and grouting pipe, which shortens the construction period and improves construction efficiency. At the same time, it also helps to reduce the overall construction cost by reducing the amount of materials used and labor costs.

[0037] 6. The device can be detachably fixed to the stirrups of the steel cage, making the installation and disassembly process more convenient. At the same time, the multiple fixing rings welded to the inner wall of the stirrups ensure the stability of the shared pipe for sonic logging and post-grouting, further improving the safety and reliability of the construction process.

[0038] 7. The bottom of the common pipe for acoustic testing and post-grouting in this utility model is connected to a one-way valve, and then a flat nozzle is connected by thread or direct welding. The nozzle has multiple grout outlet holes with equal spacing. This design allows the grout to be injected evenly into the bearing layer at the bottom of the pile. After grouting, the grout diffuses and connects, and solidifies with the bearing layer, which is equivalent to reinforcing the pile end to form a hard bearing layer and improving the bearing capacity.

[0039] 8. This utility model can be used to perform integrity testing on pile foundations. By using a threaded plug at the top of the common pipe and a one-way valve at the bottom, the accuracy and reliability of integrity testing are improved. Attached Figure Description

[0040] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0041] Figure 1 This is one of the schematic diagrams showing the usage state of this utility model;

[0042] Figure 2 This is the second schematic diagram of the usage state of this utility model;

[0043] Figure 3 This is the third schematic diagram of the usage state of this utility model;

[0044] Figure 4 This is one of the overall structural schematic diagrams of the grouting joint (8) component of this utility model;

[0045] Figure 5 This is the second schematic diagram of the overall structure of the grouting joint (8) component of this utility model;

[0046] Figure 6 This is the third schematic diagram of the overall structure of the grouting joint (8) component of this utility model;

[0047] Figure 7 This is the fourth schematic diagram of the overall usage state of this utility model;

[0048] Figure 8 yes Figure 7 A magnified schematic diagram of the structure at position A shown;

[0049] Figure 9 This is the fifth schematic diagram of the overall usage state of this utility model;

[0050] Figure 10 yes Figure 9 A magnified schematic diagram of the local structure at position B shown;

[0051] Figure 11 This is one of the schematic diagrams showing the connection relationship between the shared pipe (2) for acoustic testing and post-grouting and the stirrup (10);

[0052] Figure 12 yes Figure 11 A magnified schematic diagram of the local structure at position C shown;

[0053] Figure 13 This is the second schematic diagram showing the connection relationship between the shared pipe (2) for acoustic testing and post-grouting and the stirrups (10);

[0054] Figure 14 yes Figure 13 A magnified schematic diagram of the local structure at position D;

[0055] Figure 15 This is a schematic diagram of the combined connection relationship between the sonic logging and post-grouting shared pipe (2) and the plug (5);

[0056] Figure 16 yes Figure 15 A magnified schematic diagram of the local structure at position E shown;

[0057] Figure 17 This is one of the schematic diagrams showing the disassembled connection relationship between the shared pipe (2) for acoustic testing and post-grouting and the plug (5);

[0058] Figure 18 yes Figure 17A magnified schematic diagram of the local structure at position F;

[0059] Figure 19 This is a top view of the present invention;

[0060] Figure 20 yes Figure 19 A magnified schematic diagram of the local structure at position G;

[0061] Figure 21 This is the second schematic diagram showing the disassembled connection relationship between the shared pipe (2) for acoustic testing and post-grouting and the plug (5);

[0062] Figure 22 yes Figure 21 A magnified schematic diagram of the local structure at position H;

[0063] Figure 23 This is a schematic diagram of the connection relationship between the post-grouting common pipe (2) and the grouting joint (8);

[0064] Figure 24 This is one of the engineering examples of the detection and usage status diagrams of this utility model;

[0065] Figure 25 This is the second engineering example of the detection and usage status diagram of this utility model;

[0066] Figure 26 This is a top view of the present invention in use;

[0067] Figure 27 This is a schematic diagram of the application state of this utility model during grouting in an engineering example;

[0068] Figure 28 This is a schematic diagram of the overall structure of another design structure of the grouting joint (8) of this utility model;

[0069] Figure 29 This is a schematic diagram of the usage state of another design structure of the grouting joint (8) of this utility model;

[0070] In the diagram, number 1 represents the reinforcing cage.

[0071] 2—The sonic logging and post-grouting share the same pipe;

[0072] 3—Fixing ring;

[0073] 4—Limit plate;

[0074] 5—Plug;

[0075] 6—Limiting protrusion;

[0076] 7—Wrench;

[0077] 8—Grouting joint, 8a—Grouting hole, 8b—Anti-clogging cover, 8c—Support component, 8d—Bottom grouting hole;

[0078] 9—Grouting slurry;

[0079] 10—Stirrups;

[0080] 11—Multi-channel ultrasonic pile measuring instrument; 11a—Auxiliary testing frame; 11b—Auxiliary winding device;

[0081] 12—Grouting equipment, 12a—Grouting pipe (12a);

[0082] 13—Detection equipment (13). Detailed Implementation

[0083] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0084] In summary, a more specific embodiment of this utility model is as follows:

[0085] Example 1

[0086] As per the instruction manual Figure 1 To the instruction manual Figure 29 The first type shown is an improved shared device for sonic logging pipes and post-grouting pipes in engineering pile foundations, comprising multiple sonic logging and post-grouting shared pipes 2 detachably installed on the stirrups 10 of the reinforcing cage 1, arranged at equal or unequal intervals, characterized in that it further comprises:

[0087] The plug 5 is detachably installed on the top of the common pipe 2 for sonic logging and post-grouting, and is used to prevent impurities from entering the common pipe 2 for sonic logging and post-grouting when not in use.

[0088] Grouting joint 8 is connected to the bottom of the common pipe 2 for sonic logging and post-grouting, and is used to realize grouting. Several grouting holes 8a are opened through the grouting joint 8, and each grouting hole 8a is provided with an anti-clogging cover 8b that can be opened and closed to reduce the probability of mud and sand entering the pile body and causing blockage.

[0089] Several support components 8c are connected to the working end of the grouting joint 8. They are used to provide support and facilitate the smooth and rapid insertion of the common pipe 2 for acoustic testing and post-grouting into the foundation, so as to achieve the purpose of smooth grout overflow.

[0090] In this utility model, because it is equipped with a shared pipe for acoustic testing and post-grouting, it achieves the dual function of serving as both an integrity testing channel and a grouting pipeline.

[0091] Furthermore, the anti-clogging cover 8b is a circular or shell-shaped thin plate component, which matches the shape and size of the grouting hole 8a.

[0092] The grouting hole 8a can be a circular hole, a conical hole, an elongated hole, or a combination of circular holes, conical holes, and elongated holes.

[0093] In this utility model, the total number of anti-clogging caps 8b is the same as the total number of grouting holes 8a.

[0094] Furthermore, the grouting joint 8 has a flat structure, and the grouting joint 8 with the sonic logging and post-grouting common pipe 2 is either detachable or fixed.

[0095] In this utility model, the detachable type is that the grouting joint 8 and the common pipe 2 for acoustic testing and post-grouting are connected by threads or screw threads; the fixed type is that the grouting joint 8 and the common pipe 2 for acoustic testing and post-grouting are connected by welding or directly processed into an integral structure.

[0096] Furthermore, such as Figure 13 As shown, the inner wall of the stirrup 10 is fixedly connected with multiple fixing rings 3 that are compatible with the common pipe 2 for acoustic testing and post-grouting.

[0097] Before using the improved engineering pile foundation sonic logging pipe and post-grouting pipe shared device, the operator only needs to move the already processed device to the designated construction location by appropriate mobile handling equipment or directly by hand.

[0098] In use, construction personnel only need to determine the number of sonic logging and post-grouting shared pipes 2 according to construction requirements. Based on the number of sonic logging and post-grouting shared pipes 2, corresponding fixing rings 3 are welded onto the stirrups 10. It is necessary to ensure that multiple fixing rings 3 are concentric. After the fixing rings 3 are welded, the sonic logging and post-grouting shared pipes 2 are inserted into the fixing rings 3 of the first section of the reinforcing cage 1. When installing the reinforcing cage 1 in sections, the inner wall of the wrench 7 is brought into contact with the sonic logging and post-grouting shared pipes 2 from above the limiting plate 4, and then moved downwards to make the wrench 7 engage with the limiting plate 4. Then, the handle of the wrench 7 is rotated, which drives the sonic logging and post-grouting shared pipes 2 to rotate circumferentially. While rotating, the fixing rings 3 on the next section of the reinforcing cage 1 are inserted, thus facilitating the connection of the sonic logging and post-grouting shared pipes 2 at the section positions. After all the reinforcing cages 1 are installed, the limiting plate is... 4. The uppermost fixing ring 3 is contacted. In addition, to ensure the stability of the sonic logging and post-grouting shared pipe 2 and the fixing ring 3, thin iron wire can be used for simple binding. After the fixing of the sonic logging and post-grouting shared pipe 2 is completed, the steel cage is lowered into the pile foundation hole. After the lowering is completed, the subsequent concrete pouring is carried out. After the pile is formed, the protective rubber sleeve at the bottom nozzle position is split by clean water twice. The first time is 3 to 5 hours after the pile is formed, and the second time is 24 hours after the pile is formed. This is used to open the grout outlet hole 8a at the nozzle position. When the underwater concrete strength of the drilled cast-in-place pile is not less than 70% of the design strength and not less than 15 MPa, and the curing period is not less than 7 days, the plug 5 is removed. The integrity test of the pile foundation can be carried out using the sonic logging and post-grouting shared pipe 2. After the test is completed, the grouting operation can be started for each sonic logging and post-grouting shared pipe 2.

[0099] like Figure 24 and Figure 25 As shown, the specific steps for conducting integrity testing of the pile foundation using the shared pipe 2 for both acoustic testing and post-grouting are as follows:

[0100] Step 1: After the pile foundation is completed, the first injection is carried out 3 to 5 hours after pile completion, and the second injection is carried out 24 hours after pile completion. Water is slowly injected from the grouting pipe 12a using the grouting equipment 12. When the maximum pressure is within 5MPa, the protective rubber sleeve at the nozzle position is cracked. When the water injection pressure suddenly drops, it indicates that the one-way valve has opened, the sleeve has cracked and released the pressure. At this time, the water injection pressure is slowly reduced to prevent the high pressure outside the pipe from flowing back and carrying fine sand to block the nozzle.

[0101] Step 2: Clean the plug 5 at the top of the shared pipe 2 for acoustic testing and post-grouting, and fill the shared pipe 2 for acoustic testing and post-grouting with tap water;

[0102] Step 3: Connect the testing equipment 13, and place the three multi-channel ultrasonic pile measuring instruments 11 into the three common pipes 2 for acoustic testing and post-grouting, and lift them upwards at the same horizontal height from the bottom of the pile. In order to ensure that the three multi-channel ultrasonic pile measuring instruments 11 are lifted upwards at the same horizontal height from the bottom of the pile, the operator uses the pre-prepared auxiliary testing frame 11a and auxiliary winding device 11b to assist in the operation.

[0103] Step 4: The testing equipment 13 records data, and the multi-channel ultrasonic pile measuring instrument 11 is raised to the top of the pipe to finish recording data; the recorded data is analyzed to measure parameters such as sound time, amplitude, and frequency, and multi-section waveforms and pile quality diagrams are displayed synchronously on a color LCD screen to assess the integrity of the pile body;

[0104] Step 5: After the test is completed, protect the common pipe 2 for sonic logging and post-grouting and restore the plug 5. At this point, the test of the pile foundation is completed.

[0105] Throughout the entire implementation process described above, the acoustic transmission method was used for testing, employing a multi-channel ultrasonic pile measuring instrument. This multi-channel ultrasonic pile measuring instrument utilizes a new type of transducer; specifically, the HC-U96 multi-channel ultrasonic pile measuring instrument was used. In step 2, filling the acoustic logging tube with tap water serves two purposes: firstly, to balance the internal and external water pressure. During pile foundation construction, the lower end of the acoustic logging tube is a certain distance from the designed pile bottom elevation, while the upper end exceeds the designed pile top elevation. Because the concrete in the pile body generates significant water pressure during pouring, without filling with water, a pressure difference will form inside and outside the acoustic logging tube, potentially causing mud or other impurities to enter and affecting the accuracy of the test results. Filling with water balances the water pressure inside and outside the acoustic logging tube, preventing mud from entering due to pressure differences and ensuring the smooth progress of the testing work.

[0106] On the other hand, it provides the medium for ultrasonic wave propagation. Ultrasonic testing requires propagation through a sonic logging tube, but sound waves propagate much less effectively in air than in water and concrete. When the sonic logging tube is not filled with water, sound waves mainly propagate through air and concrete. Due to the significant difference in acoustic impedance between air and concrete, sound waves are reflected and refracted at the interface, resulting in substantial energy loss and a weak received signal. However, after filling with water, sound waves primarily propagate through water and concrete. Since the acoustic impedances of water and concrete are more similar, reflection and refraction at the interface are reduced, resulting in less energy loss and a stronger received signal, which improves the accuracy of the test results.

[0107] like Figure 27As shown, after the pile foundation is completed and the grouting joint splitting and pile foundation integrity test are completed, grouting can be carried out according to the test results. Before grouting, parameters such as grout mix ratio and grouting volume are determined. Then, the plug at the top of the grouting pipe is removed and connected to the grouting equipment. Subsequently, the grout is mixed and pressure grouting is performed. Next, pressure stabilization and grouting are carried out and the holes are plugged. Finally, the data is recorded and analyzed.

[0108] The specific grouting steps are as follows:

[0109] Step 1: After pile foundation construction, the grouting joint splitting and pile foundation integrity testing are completed;

[0110] Step 2: Determine parameters such as grout mix ratio and grouting volume;

[0111] Step 3: Remove the plug at the top of the grouting pipe and connect it to the grouting equipment;

[0112] Step 4: Mix the grouting slurry. The grouting volume is divided into three parts: 40%, 40%, and 20% of the grouting volume each time. Each cycle is pressed in, and the time interval between each cycle is controlled within 2 to 4 hours.

[0113] Step 5: During each grouting operation, a designated person records the grouting pressure, grouting volume, and grouting flow rate. When the grouting volume reaches the design drawing requirements or the total grouting volume reaches the design requirements, grouting is stopped after stabilizing for 3-10 minutes, and the top of the grouting pipe 12a is plugged. During grouting, the grout 9 flows along the grouting pipe 12a into the shared pipe 2 for sonic logging and post-grouting, and finally reaches the grouting hole 8a through the grouting joint 8. Under the grouting pressure, the grout 9 breaks through the anti-clogging cover 8b, and then flows out through several grouting holes 8a into the pile foundation, completing the grouting process. Simultaneously, during use, a support component 8c is installed at the working end of the grouting joint to provide support and facilitate the smooth and rapid insertion of the shared pipe for sonic logging and post-grouting into the foundation, achieving smooth grout overflow and reaching the required grouting pressure to meet the vertical compressive bearing capacity requirements of the foundation.

[0114] Step 6: Record and analyze. As the grouting time progresses, when the grouting is completed and the construction requirements are met, the operator only needs to stop the grouting operation, and then use the plug 5 to seal the common pipe 2 for sonic logging and post-grouting.

[0115] This utility model is integrated into the concrete pouring process, forming a pile foundation that serves as an important load-bearing component of the building, eliminating the need for demolition.

[0116] In summary, the shared device for the sonic logging pipe and post-grouting pipe of this engineering pile, through its ingenious structural design, achieves an organic combination of sonic logging and grouting functions. During installation, use, and subsequent maintenance, the device has demonstrated good feasibility and operability, effectively completing the detection of pile integrity and the diffusion and connection of grout after pile bottom grouting, solidifying with the bearing layer. This is equivalent to reinforcing the pile end to form a hard bearing layer, thereby improving the bearing capacity.

[0117] Also includes:

[0118] Several bottom grouting holes 8d are provided, and each bottom grouting hole 8d is opened through the bottom end face of the grouting joint 8.

[0119] Specifically, the fixed ends of the support component 8c are symmetrically connected to the bottom sides of the grouting joint 8 in pairs; the working ends of the support component 8c are needle-shaped or pen-shaped.

[0120] More specifically, the bottom grouting hole 8d is a circular hole, a conical hole, an elongated hole, or a combination of circular, conical, and elongated holes; and an anti-clogging cover 8b is provided at the outlet of each bottom grouting hole 8d in a corresponding openable and closable manner.

[0121] Furthermore, such as Figure 1 and Figure 2 As shown, the common pipe 2 for acoustic testing and post-grouting is a tubular component, and the total number of such tubular components is set to at least 3.

[0122] Example 2

[0123] This embodiment 2 is the same as embodiment 1, except that, as Figures 12 to 29 As shown, it also includes a rotating assembly for rotating the common pipe for acoustic testing and post-grouting. The rotating assembly includes a limiting plate 4 welded to the outer wall of the common pipe 2 for acoustic testing and post-grouting. The limiting plate 4 is located above the fixing ring 3. The bottom of the limiting plate 4 is provided with a groove that matches the fixing ring 3. The common pipe 2 for acoustic testing and post-grouting rotates on the top of the fixing ring 3 by means of the groove.

[0124] It also includes a wrench 7 that is compatible with the limiting plate 4 and the retaining ring 3.

[0125] In this invention, the fixed connection is either a welded connection or a directly machined integral structure.

[0126] Furthermore, a limiting protrusion 6 is fixed to the outer wall of the shared pipe 2 for acoustic testing and post-grouting, and an annular groove adapted to the limiting protrusion 6 is provided on the inner wall of the plug 5. The plug 5 is fixed to the shared pipe 2 for acoustic testing and post-grouting by means of the annular groove and the limiting protrusion 6.

[0127] In this invention, the detachable connection is either a snap-fit ​​connection or a threaded connection.

[0128] In use, this embodiment 3 is the same as that of embodiments 1 and 2, except that...

[0129] Other uses are the same as in Examples 1 and 2, and will not be repeated here.

[0130] Finally, it should be noted that this utility model is not limited to the above-described embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art.

Claims

1. An improved common device of sounding pipe and post grouting pipe for engineering pile foundation, comprising a plurality of sounding and post grouting common pipes (2) arranged at equal intervals or unequal intervals, which are detachably mounted on the stirrups (10) of the reinforcement cage (1), characterized in that, Also includes: The plug (5) is detachably installed on the top of the common pipe (2) for sonic logging and post-grouting, and is used to prevent impurities from entering the common pipe (2) when not being tested. Grouting joint (8) is connected to the bottom of the common pipe (2) for sonic logging and post-grouting to realize grouting. Several grouting holes (8a) are opened through the grouting joint (8). Each grouting hole (8a) has an anti-clogging cover (8b) that can be opened and closed at its outlet to reduce the probability of mud and sand entering the pile body and causing blockage. Several support components (8c) are connected to the working end of the grouting joint (8) to provide support and facilitate the smooth and rapid insertion of the common pipe (2) for acoustic testing and post-grouting into the foundation, so as to achieve the purpose of smooth grout overflow.

2. The improved common device of the sounding pipe and the post grouting pipe of the engineering pile according to claim 1, characterized in that, The anti-clogging cover (8b) is a circular or shell-shaped thin plate component that matches the shape and size of the grouting hole (8a). The grouting hole (8a) is a circular hole, a conical hole, an elongated hole, or a combination of circular holes, conical holes, and elongated holes.

3. The improved common device of the sounding pipe and the post grouting pipe of the engineering pile according to claim 1, characterized in that, The grouting joint (8) is a flat structure, and the grouting joint (8) of the flat structure is detachable or fixedly connected to the common pipe (2) for acoustic testing and post-grouting.

4. The improved common device of the sounding pipe and the post grouting pipe of the engineering pile according to claim 1, characterized in that, The inner wall of the stirrup (10) is fixedly connected with multiple fixing rings (3) that are compatible with the common pipe (2) for acoustic testing and post-grouting.

5. The improved device for sharing an acoustic logging pipe and a post-grouting pipe for engineering pile foundations according to claim 1, characterized in that, Also includes: Several bottom grouting holes (8d) are provided, and each bottom grouting hole (8d) is provided on the bottom end face of the grouting joint (8).

6. An improved device for both sounding and post grouting of pile foundation as claimed in claim 5 wherein, The fixed ends of the support component (8c) are symmetrically connected to the bottom sides of the grouting joint (8); the working ends of the support component (8c) are needle-shaped or pen-shaped.

7. The improved device for pile foundation according to claim 5, wherein, The bottom grouting hole (8d) can be a circular hole, a conical hole, an elongated hole, or a combination of circular, conical, and elongated holes; a corresponding anti-clogging cap (8b) is provided at the outlet of each bottom grouting hole (8d).

8. The improved common device of a sounding pipe and a post grouting pipe for an engineering pile according to claim 1, wherein, The sonic logging and post-grouting shared pipe (2) is a tubular component, and the total number of such tubular components is set to at least 3.

9. The improved common device of a sounding pipe and a post grouting pipe for an engineering pile according to claim 1, wherein, It also includes a rotating assembly for rotating the common pipe for acoustic testing and post-grouting, the rotating assembly including a limiting plate (4) welded to the outer wall of the common pipe for acoustic testing and post-grouting (2), the limiting plate (4) being located above the fixing ring (3), the bottom of the limiting plate (4) being provided with a groove adapted to the fixing ring (3), the common pipe for acoustic testing and post-grouting (2) rotating on the top of the fixing ring (3) by means of the groove; It also includes a wrench (7) that is compatible with the limiting plate (4) and the retaining ring (3).

10. The improved common device of a sounding pipe and a post grouting pipe for an engineering pile according to claim 1, wherein The outer wall of the sonic and post-grouting shared pipe (2) is fixed with a limiting protrusion (6), and the inner wall of the plug (5) is provided with an annular groove that matches the limiting protrusion (6). The plug (5) and the sonic and post-grouting shared pipe (2) are fixed by the annular groove and the limiting protrusion (6).

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