Fabricated sleeve grouting fullness measuring method

Abstract

The invention relates to an assembly type sleeve grouting fullness measuring method, and relates to the technical field of grouting determination.The assembly type sleeve grouting fullness measuring method comprises the steps that S1, adjacent prefabricated parts are spliced; s2, the embedded steel bars on the prefabricated parts are inserted into the grouting sleeves embedded in the adjacent prefabricated parts; s3, cement grouting materials are mixed and stirred according to a certain proportion, and the stirred cement grouting materials are injected into the grouting sleeve through the grouting hole; and S4, collecting air discharged from the grout outlet hole, detecting the air pressure of the air, automatically measuring the grouting fullness through conversion of the air pressure of the air, and if the grouting fullness reaches a preset value, automatically stopping grouting and maintaining the pressure. The method has the effects of reducing human impression errors and improving the accuracy of grouting fullness measurement.

Description

Technical Field

[0001] The present application relates to the technical field of grouting measurement, and in particular to a method for measuring the fullness of assembled sleeve grouting. Background Art

[0002] Prefabricated sleeve grouting is a construction technology used to connect steel bars in prefabricated components in prefabricated buildings. It has the advantages of high connection strength, simple construction, and a wide range of applications. It is suitable for engineering fields such as reinforced concrete structures, steel structures, bridges, offshore oil platforms, and wind power towers.

[0003] At present, during the production stage of prefabricated components, grouting sleeves are embedded in the components. At the construction site, when two prefabricated components need to be connected, the embedded steel bars in one component are inserted into the embedded grouting sleeves in the other component, which are used to connect vertical components, such as shear walls and frame columns, and can also be used to connect horizontal components. After the two prefabricated components are connected, cement grouting material is injected through the grouting holes on the sleeve to fill the gap between the sleeve and the steel bar to form a tight connection. During grouting, the low hole position is grouted, and the air is discharged through the high hole position until the grout overflows from the high hole position, indicating that the grouting is completed; however, in the construction of prefabricated building sleeve grouting, the detection of grouting fullness is the key to ensure the safety and quality of the structure. The traditional detection method relies on the human eye to observe the low hole position grouting and high hole position grouting as the evaluation standard. This method is subjective and has errors. Summary of the invention

[0004] In order to reduce human perception errors and improve the accuracy of grouting fullness measurement, the present application provides a method for measuring the grouting fullness of an assembled sleeve.

[0005] The method for measuring the fullness of assembled sleeve grouting provided in this application adopts the following technical solution: The method for determining the fullness of assembled sleeve grouting includes: S1. Splicing of adjacent prefabricated components; S2, inserting the embedded steel bars on the prefabricated component into the embedded grouting sleeves in the adjacent prefabricated components; S3, mixing cement grouting material according to a certain proportion, and injecting the mixed cement grouting material into the grouting sleeve through the grouting hole; S4. Collect the air discharged from the grouting hole and detect the air pressure. Automatically determine the grouting fullness by converting the air pressure. If the grouting fullness reaches the preset value, the grouting will be automatically stopped and the pressure will be maintained.

[0006] By adopting the above technical solution, when measuring the grouting fullness of the assembled sleeve, firstly, the two adjacent prefabricated components are accurately aligned to ensure that the connection position is accurate, then the embedded steel bars on one prefabricated component are inserted into the embedded grouting sleeve in the other prefabricated component to form a preliminary connection structure, and the cement grouting material is mixed and stirred according to a specific proportion so that the performance of the cement grouting material meets the construction requirements, and then the mixed cement grouting material is injected into the grouting sleeve through the grouting hole to fill the gap between the sleeve and the steel bar. During the grouting process, the air will be gradually discharged from the slurry outlet hole, and the collected air pressure will be detected. The air pressure is converted to automatically calculate the fullness of the grouting for quantitative analysis. When the detected grouting fullness reaches the preset standard value, the grouting is automatically stopped and the pressure is maintained. Subsequently, a special plug is used to seal the grouting hole and the outlet hole to allow the cement grouting material to be fully filled and solidified to form a stable connection. The grouting fullness is monitored in real time during the grouting process. Once the preset value is reached, the system automatically stops grouting, thereby controlling the grouting amount to avoid excessive or insufficient grouting. The automated air pressure detection and conversion avoids the human visual error in the traditional method, improves the accuracy and reliability of grouting fullness detection, and thus improves the overall construction progress.

[0007] Optionally, in S4, a saturation measuring device is used to collect the air discharged from the grout outlet and detect the air pressure to obtain the grouting fullness; the saturation measuring device includes: A grouting device; the grouting device is provided with a grouting hose for connecting the grouting hole, an air intake hose for connecting the grouting hole, and a gas collection chamber connected to the air intake hose; A pressure sensor is arranged in the gas collecting chamber, and is used to detect the air pressure in the gas collecting chamber and send out a pressure detection signal; An exhaust pipe is arranged in the gas collection chamber, and an exhaust valve is also arranged on the exhaust pipe; The pressure independent display module is connected to the pressure sensor to receive the pressure detection signal and display the air pressure in the gas collection room. The digital control sensing device is connected to the pressure independent display control template and the grouting device, and is used to receive the pressure detection signal to obtain the air pressure in the gas collection room. When the air pressure in the gas collection room reaches the preset pressure value, a control signal is sent to the grouting device to stop grouting.

[0008] By adopting the above technical solution, after grouting starts, the air discharged from the grouting hole enters the gas collection chamber through the air inlet hose, the pressure sensor monitors the air pressure of the air in the gas collection chamber in real time, and converts the data into a pressure detection signal, the pressure detection signal is transmitted to the pressure independent display module, the signal is converted into a readable air pressure value and displayed, the digital control sensing device receives the pressure detection signal at the same time, and analyzes the air pressure of the air in the gas collection chamber in real time, when the air pressure in the gas collection chamber reaches the preset qualified air pressure value (such as 2.2MPa), the digital control sensing device sends a control signal to the grouting device, and the grouting device automatically stops grouting after receiving the control signal to ensure that the grouting fullness meets the standard; after the grouting stops, the construction personnel exhaust the air in the gas collection chamber through the exhaust valve on the exhaust pipe, and prepare for the next test; wherein the saturation measuring device can automatically and accurately control the grouting process, thereby not only reducing manual intervention, improving construction efficiency and safety, but also accurately controlling the grouting amount, reducing material waste and construction costs, and at the same time, the coordinated use of the pressure sensor and the digital control sensing device realizes the accurate detection of the grouting fullness, avoiding the human error in the traditional method.

[0009] Optionally, the saturation measuring device also includes two anti-slurry filter screens respectively arranged at the connection between the grouting hose and the grouting hole and at the connection between the air intake hose and the slurry outlet hole.

[0010] By adopting the above technical solution, during the grouting process, a small amount of cement grouting material may overflow from the joint under the action of pressure. The anti-slurry filter can prevent the slurry from overflowing, keep the construction site clean and tidy, and reduce the waste of slurry.

[0011] Optionally, the saturation measuring device further includes: The collecting tube is arranged on the side of the air inlet hose close to the pulp outlet hole; The sealing end cover is detachably connected to the bottom of the collecting tube.

[0012] By adopting the above technical solution, during the grouting process, a small amount of cement grouting material may overflow or splash from the slurry outlet. The collecting tube can collect this part of the cement grouting material to prevent it from entering the gas collection chamber and affecting the measurement results; and the construction personnel can regularly remove the sealing end cover and clean the cement grouting material inside the collecting tube to ensure long-term and stable operation of the equipment.

[0013] Optionally, the saturation measuring device further includes: The backwash pipe is arranged on the air inlet hose, and the collecting tube is located between the backwash pipe and the pulp outlet hole; A water inlet valve is arranged on the backwash pipe; The air intake valve is arranged on the air intake hose, and the air intake valve is located between the backwash pipe and the gas collection chamber.

[0014] By adopting the above technical solution, the backwash pipe is used to remove residual slurry in the air intake hose by reverse flushing after the grouting is completed, so as to prevent the slurry from solidifying and clogging the air intake hose; the water inlet valve is used to control the water flow during the backwashing process. When the backwashing operation is required, the water inlet valve is opened and the air intake valve is closed. Water flows in through the backwash pipe to clean the air intake hose, ensuring smooth flow during subsequent use.

[0015] Optionally, a barrier filter is provided at the connection between the air intake hose and the gas collection chamber.

[0016] By adopting the above technical solution, the barrier filter can effectively block impurities such as dust and cement grouting materials from entering the gas collection chamber, keep the inside of the gas collection chamber clean, protect precision components such as sensors in the gas collection chamber from damage, and improve the accuracy of detection.

[0017] Optionally, the air intake hose is made of a transparent material.

[0018] By adopting the above technical solution, the air intake hose made of transparent material allows construction workers to directly observe the internal status of the air intake hose with their eyes, thereby assisting in judging the progress and fullness of the grouting process, and promptly discovering abnormal situations such as grouting blockage and poor flow, thereby ensuring the smooth progress of the grouting process.

[0019] Optionally, in S3, before grouting, an air compressor is used to check the grouting holes and the grouting holes to ensure that the holes are unobstructed.

[0020] By adopting the above technical solution, compressed air is blown into the grouting holes and the slurry outlet holes through an air compressor to check whether there is blockage or foreign matter inside the hole path, ensure that the hole path is unobstructed, and avoid grouting failure or deterioration of grouting quality due to blocked hole paths during the grouting process.

[0021] Optionally, in S3, the cement grouting slurry should complete the grouting operation within 20 to 30 minutes from the start of water addition and mixing.

[0022] By adopting the above technical solution, the fluidity of cement grouting slurry will gradually decrease with the passage of time. Grouting within 20 to 30 minutes can ensure that the slurry has sufficient fluidity, avoid the initial setting of the slurry during the grouting process, and at the same time ensure the fullness and density of the grouting.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the grouting process, the grouting fullness is monitored in real time. Once the preset value is reached, the system automatically stops grouting, thereby controlling the grouting amount to avoid excessive or insufficient grouting. The automated air pressure detection and conversion avoids the human perception error in the traditional method, improves the accuracy and reliability of grouting fullness detection, and thus improves the overall construction progress. 2. The saturation measuring device can automatically and accurately control the grouting process, which not only reduces manual intervention and improves construction efficiency and safety, but also can accurately control the grouting volume, reduce material waste and construction costs. At the same time, the coordinated use of pressure sensors and digital control sensing devices can achieve accurate detection of grouting fullness and avoid human errors in traditional methods; 3. During the grouting process, a small amount of cement grouting material may overflow or splash from the slurry outlet. The collecting tube can collect this part of cement grouting material to prevent it from entering the gas collection chamber and affecting the measurement results. The construction personnel can regularly remove the sealing end cover and clean the cement grouting material inside the collecting tube to ensure long-term stable operation of the equipment. After the grouting is completed, the residual slurry in the air intake hose can be removed by backwashing to prevent the slurry from solidifying and clogging the air intake hose. When backwashing is required, open the water inlet valve, close the air intake valve, and let the water flow in through the backwash pipe to clean the air intake hose to ensure smooth flow during subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the saturation measurement device in this application.

[0025] Explanation of the reference numerals: 1. Prefabricated component; 2. Grouting sleeve; 21. Grouting hole; 22. Grouting hole; 3. Saturation measuring device; 31. Grouting device; 311. Feed inlet; 32. Grouting hose; 33. Air intake hose; 331. Air intake valve; 34. Gas collecting chamber; 341. Exhaust pipe; 342. Exhaust valve; 343. Pressure sensor; 344. Pressure independent display module; 345. Digital control sensing device; 35. Anti-slurry filter; 36. Barrier filter; 37. Collecting cylinder; 371. Sealing end cover; 38. Backwash pipe; 381. Water inlet valve. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 This application is described in further detail.

[0027] The present application embodiment discloses a method for measuring the fullness of assembled sleeve grouting. Figure 1 , the method for determining the fullness of assembled sleeve grouting includes: S1. Splicing adjacent prefabricated components 1: accurately align two adjacent prefabricated components 1 to ensure that the connection parts are accurate.

[0028] S2. Insert the embedded steel bars on one prefabricated component 1 into the embedded grouting sleeve 2 in another prefabricated component 1 to form a preliminary connection structure.

[0029] S3. Mix and stir cement grouting materials in a certain proportion. The mixing ratio of cement grouting materials depends on the specific application scenario. Cement grouting materials include cement, water, and sand, etc. The mixing ratio of cement to water is between 1:0.35-0.45. In order to increase the volume stability of the slurry, the amount of sand added is 10%-30% of the weight of cement. For other materials, according to specific needs, expansion agents, water reducers, retarders, etc. can also be added to meet specific performance requirements.

[0030] Before grouting, an air compressor is required to check the grouting hole 21 and the grouting hole 22 to ensure that the hole is unobstructed. Compressed air is blown into the grouting hole 21 and the grouting hole 22 through the air compressor to check whether there is blockage or foreign matter inside the hole to ensure that the hole is unobstructed, so as to avoid grouting failure or grouting quality degradation caused by blocked hole during the grouting process. The mixed cement grouting material is injected into the grouting sleeve 2 through the grouting hole 21 to fill the gap between the sleeve and the steel bar. The cement grouting slurry should be grouted within 20 to 30 minutes from the start of water addition and stirring. The fluidity of the cement grouting slurry will gradually decrease with the passage of time. Grouting within 20 to 30 minutes can ensure that the slurry has sufficient fluidity, avoid the slurry from starting to set during the grouting process, and ensure the fullness and density of the grouting.

[0031] S4. During the grouting process, air will gradually be discharged from the grouting hole 22. The saturation measuring device 3 is used to collect the air discharged from the grouting hole 22, and the air pressure is detected. The grouting fullness is automatically determined by converting the air pressure. When the detected grouting fullness reaches the preset standard value, the grouting is automatically stopped and the pressure is maintained. Subsequently, a special plug is used to plug the grouting hole 21 and the grouting hole 22, so that the cement grouting material is fully filled and solidified to form a stable connection.

[0032] The saturation measuring device 3 includes a grouting device 31, which is provided with a feed port 311. The grouting device 31 is also provided with a grouting hose 32 for connecting the grouting hole 21, an air intake hose 33 for connecting the slurry outlet hole 22, and a gas collection chamber 34 connected to the air intake hose 33. The connection between the grouting hose 32 and the grouting hole 21 and the connection between the air intake hose 33 and the slurry outlet hole 22 are both provided with a slurry prevention filter 35. During the grouting process, a small amount of cement grouting material may overflow from the connection under pressure, and the slurry prevention filter 35 is used to prevent the slurry from overflowing. The air intake hose 33 is made of a transparent material polytetrafluoroethylene (PTFE), which is used to allow construction personnel to directly observe the state of the air intake hose 33 through human eyes, so as to assist in judging the progress and fullness of the grouting process, and timely discover abnormal conditions such as grouting blockage and poor flow. A barrier filter 36 is also provided at the connection between the air intake hose 33 and the gas collection chamber 34, and the barrier filter 36 is used to prevent impurities such as dust and cement grouting materials from entering the gas collection chamber 34. An exhaust pipe 341 is provided at the top of the gas collection chamber 34, and an exhaust valve 342 is also provided on the exhaust pipe 341.

[0033] Reference Figure 1 The saturation measuring device 3 also includes a pressure sensor 343, a pressure independent display module 344 and a digital control sensing device 345 arranged in the gas collection chamber 34, wherein the pressure sensor 343 is used to detect the air pressure in the gas collection chamber 34 and send a pressure detection signal. The pressure independent display module 344 is connected to the pressure sensor 343, and the pressure independent display module 344 is used to receive the pressure detection signal and display the air pressure in the gas collection chamber 34. The digital control sensing device 345 is connected to the pressure independent display control template and the grouting device 31, and is used to receive the pressure detection signal to know the air pressure in the gas collection chamber 34. When the air pressure in the gas collection chamber 34 reaches the preset pressure value, a control signal is sent to the grouting device 31 to stop the grouting of the grouting device 31.

[0034] After the grouting starts, the air discharged from the grouting hole 22 enters the gas collection chamber 34 through the air inlet hose 33. The pressure sensor 343 monitors the air pressure in the gas collection chamber 34 in real time and converts the data into a pressure detection signal. The pressure detection signal is transmitted to the pressure independent display module 344, which converts the signal into a readable air pressure value and displays it. The digital control sensing device 345 simultaneously receives the pressure detection signal and analyzes the air pressure in the gas collection chamber 34 in real time. When the air pressure in the gas collection chamber 34 reaches the preset qualified air pressure value (such as 2.2MPa), the digital control sensing device 345 sends a control signal to the grouting device 31. After receiving the control signal, the grouting device 31 automatically stops grouting to ensure that the grouting fullness meets the standard.

[0035] Here is an example: During the production stage of the prefabricated component 1, the grouting sleeve 2 is pre-buried in the component. Since the volume of the grouting sleeve 2 and the cavities of other parts inside the prefabricated component 1 are all standard and constant, the volume of each grouting cavity can be calculated and input into the digital control sensing device 345 to realize automatic grouting. If the actual grouting cavity volume is 1 m³, the cavity in the gas collection chamber 34 is 0.1 m³, the grouting pressure is 0.2 MPa, and the measuring instrument is ≥2.2 MPa, the grouting pressure is automatically stopped by the digital control sensing device 345 after passing the test.

[0036] After the grouting stops, the construction personnel exhaust the air in the gas collection chamber 34 through the exhaust valve 342 on the exhaust pipe 341, and prepare for the next test. The saturation measuring device 3 can automatically and accurately control the grouting process, which not only reduces manual intervention, improves construction efficiency and safety, but also can accurately control the grouting amount, reduce material waste and construction costs. At the same time, the coordinated use of the pressure sensor 343 and the digital control sensing device 345 realizes the accurate detection of the grouting fullness, avoiding the human error in the traditional method.

[0037] Reference Figure 1 A collecting tube 37 is provided on the side of the air intake hose 33 near the pulp outlet hole 22, and a sealing end cap 371 is detachably connected to the bottom of the collecting tube 37 through a thread. A backwashing pipe 38 is also provided on the air intake hose 33, and the collecting tube 37 is located between the backwashing pipe 38 and the pulp outlet hole 22. A water inlet valve 381 is provided on the backwashing pipe 38, and an air intake valve 331 is provided on the air intake hose 33, and the air intake valve 331 is located between the backwashing pipe 38 and the gas collection chamber 34.

[0038] During the grouting process, a small amount of cement grouting material may overflow or splash from the slurry outlet 22. The collecting tube 37 can collect this part of cement grouting material to prevent it from entering the gas collection chamber 34 and affecting the measurement results. And the construction personnel can regularly remove the sealing end cover 371 to clean the cement grouting material inside the collecting tube 37, so that the equipment can operate stably for a long time. The backwashing pipe 38 is used to remove the residual slurry in the air intake hose 33 by backwashing after the grouting is completed, so as to prevent the slurry from solidifying and clogging the air intake hose 33. The water inlet valve 381 is used to control the water flow during the backwashing process. When the backwashing operation is required, the water inlet valve 381 is opened, the air intake valve 331 is closed, and the water flows in through the backwashing pipe 38 to clean the air intake hose 33 to ensure smooth flow during subsequent use.

[0039] The implementation principle of a method for measuring the fullness of assembled sleeve grouting in an embodiment of the present application is as follows: when measuring the fullness of assembled sleeve grouting, firstly, two adjacent prefabricated components 1 are accurately aligned to ensure that the connection position is accurate, then the embedded steel bars on one prefabricated component 1 are inserted into the embedded grouting sleeve 2 in the other prefabricated component 1 to form a preliminary connection structure, and the cement grouting material is mixed and stirred according to a specific ratio so that the performance of the cement grouting material meets the construction requirements, and then the stirred cement grouting material is injected into the grouting sleeve 2 through the grouting hole 21 to fill the gap between the sleeve and the steel bar. During the grouting process, the air will be gradually discharged from the slurry outlet hole 22 to collect the air. The air pressure is detected, and the fullness of the grouting is automatically calculated by converting the air pressure for quantitative analysis. When the detected grouting fullness reaches the preset standard value, the grouting is automatically stopped and the pressure is maintained. Subsequently, a special plug is used to seal the grouting hole 21 and the slurry outlet hole 22, so that the cement grouting material is fully filled and solidified to form a stable connection. The grouting fullness is monitored in real time during the grouting process. Once the preset value is reached, the system automatically stops grouting, thereby controlling the grouting amount to avoid excessive or insufficient grouting. In addition, through automated air pressure detection and conversion, the human visual error in the traditional method is avoided, and the accuracy and reliability of the grouting fullness detection are improved, thereby improving the overall construction progress.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for measuring the fullness of assembled sleeve grouting, characterized in that: include: S1, splicing adjacent prefabricated components (1); S2, inserting the embedded steel bars on the prefabricated component (1) into the embedded grouting sleeve (2) in the adjacent prefabricated component (1); S3, mixing and stirring cement grouting material in a certain proportion, and injecting the mixed cement grouting material into the grouting sleeve (2) through the grouting hole (21); S4, collecting the air exhausted from the grout outlet (22), detecting the air pressure, and automatically determining the grouting fullness by converting the air pressure. If the grouting fullness reaches a preset value, the grouting is automatically stopped and the pressure is maintained.

2. The method for measuring the fullness of assembled sleeve grouting according to claim 1 is characterized in that: In S4, a saturation measuring device (3) is used to collect the air discharged from the grout outlet (22), and the air pressure is tested to obtain the grouting fullness. The saturation measuring device (3) comprises: A grouting device (31); the grouting device (31) is provided with a grouting hose (32) for connecting to the grouting hole (21), an air intake hose (33) for connecting to the grouting hole (22), and a gas collection chamber (34) connected to the air intake hose (33); A pressure sensor (343) is disposed in the gas collection chamber (34) and is used to detect the air pressure in the gas collection chamber (34) and to send a pressure detection signal; An exhaust pipe (341) is arranged in the gas collection chamber (34), and an exhaust valve (342) is also arranged on the exhaust pipe (341); The pressure independent display module (344) is connected to the pressure sensor (343) and is used to receive the pressure detection signal and display the air pressure in the gas collection chamber (34). The digital control sensing device (345) is connected to the independent pressure display control template and the grouting device (31) and is used to receive a pressure detection signal to obtain the air pressure in the gas collection chamber (34); when the air pressure in the gas collection chamber (34) reaches a preset pressure value, a control signal is sent to the grouting device (31) to stop the grouting of the grouting device (31).

3. The method for measuring the fullness of assembled sleeve grouting according to claim 2 is characterized in that: The saturation determination device (3) further comprises two anti-slurry filter screens (35) respectively arranged at the connection between the grouting hose (32) and the grouting hole (21) and at the connection between the air intake hose (33) and the slurry outlet hole (22).

4. The method for measuring the fullness of assembled sleeve grouting according to claim 2 is characterized in that: The saturation determination device (3) further comprises: A collecting cylinder (37) is arranged on a side of the air inlet hose (33) close to the pulp outlet hole (22); The sealing end cover (371) is detachably connected to the bottom of the collecting tube (37).

5. The method for measuring the fullness of assembled sleeve grouting according to claim 4 is characterized in that: The saturation determination device (3) further comprises: A backwash pipe (38) is arranged on the air inlet hose (33), and the collecting tube (37) is located between the backwash pipe (38) and the pulp outlet hole (22); A water inlet valve (381) is arranged on the backwash pipe (38); An air intake valve (331) is arranged on the air intake hose (33), and the air intake valve (331) is located between the backwash pipe (38) and the gas collection chamber (34).

6. The method for measuring the fullness of assembled sleeve grouting according to claim 2 is characterized in that: A barrier filter (36) is provided at the connection between the air intake hose (33) and the gas collection chamber (34).

7. The method for measuring the fullness of assembled sleeve grouting according to claim 2 is characterized in that: The air intake hose (33) is made of a transparent material.

8. The method for measuring the fullness of assembled sleeve grouting according to any one of claims 1 to 7, characterized in that: In S3, before grouting, an air compressor is used to check the grouting hole (21) and the grouting hole (22) to ensure that the hole paths are unobstructed.

9. The method for measuring the fullness of assembled sleeve grouting according to any one of claims 1 to 7, characterized in that: In S3, the cement grouting slurry should complete the grouting operation within 20 to 30 minutes from the start of water addition and mixing.

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