Roller compacted concrete construction drain hole pipe drawing process

Through the drainage hole extraction process of rolling concrete construction, the problems of high cost and low efficiency of traditional construction methods are solved, efficient and economical drainage hole construction is achieved, construction risks and costs are reduced, and concrete density and construction efficiency are improved.

CN119308287APending Publication Date: 2025-01-14SINOHYDRO FOUND ENG
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Patent Information

Application Number
CN202411409243.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-10
Publication Date
2025-01-14

AI Technical Summary

Technical Problem

The traditional drainage hole construction method has high cost, poor construction efficiency, and high equipment requirements, which is not conducive to personnel use.

Method used

Adopt the drainage hole extraction process for rolling concrete construction, including preparing steel pipe extraction and tools, positioning marks, installing pipe extraction, pouring concrete and performing full-section rolling, real-time monitoring of the pipe extraction process, optimizing the process flow, monitoring pressure through sensors, Displacement and vibration, collect data to build simulation models to optimize the process.

Benefits of technology

It improves the density of concrete and construction efficiency, reduces labor intensity and cost, reduces material waste and construction time, reduces construction risks, and ensures the accuracy and safety of drainage holes.

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Abstract

The invention belongs to the field of drain hole construction, and particularly discloses a roller compacted concrete construction drain hole pipe drawing process which comprises the following specific steps: S1, preparing appliances; s2, positioning and marking; s3, installing a drawing pipe; s4, concrete is poured; s5, carrying out full-section rolling; s6, tube drawing; s7, performing real-time monitoring; and S8, ending. S9, optimizing the process; according to the method, the concrete is poured and paved to be flush with the top of the steel drawing pipe, large-area rolling compaction can be directly conducted through a machine, the concrete compactness is improved, meanwhile, the working efficiency is improved, the labor intensity of constructors is reduced, economic benefits are quite considerable, a simulation model is established by collecting real-time data, and the construction cost is reduced. According to the method, the construction result is compared with model prediction, the accuracy of the model is improved, then different technological processes are simulated by adjusting parameters, and the current technological process and technological parameters are optimized, so that a better effect is achieved, material waste and construction time are reduced, and the total cost is reduced.
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Description

Technical Field

[0001] The invention belongs to the field of drainage hole construction, and in particular relates to a drainage hole pipe pulling process for roller compacted concrete construction. Background Art

[0002] A dam is an artificial structure used to intercept water flow, store water resources and control water levels. The dam body refers to the main structure of the dam. The design of the dam body must take into account the water pressure, soil characteristics and dam materials. Common dam body types include earth dams, rock dams, concrete dams, etc.

[0003] Dam body drainage holes refer to the holes set inside or on the surface of the dam body to discharge the water inside the dam body, reduce the water pressure of the dam body, and maintain the stability of the dam body. They are usually formed by drilling or excavation and installed at specific locations of the dam body to prevent water from accumulating inside the dam body, thereby reducing the potential risk of landslides or leakage. By setting up dam body drainage holes, the water level of the dam body can be effectively controlled to ensure the safety and stability of the dam body.

[0004] However, conventional drainage holes are usually constructed by drilling holes later, which is costly, inefficient, and has high requirements on equipment, which is not conducive to personnel use. Summary of the invention

[0005] The purpose of the present invention is to provide a pipe pulling process for drainage holes in roller compacted concrete construction to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A pipe pulling process for drainage holes in roller compacted concrete construction, the specific steps are as follows:

[0008] S1. Equipment preparation: prepare the steel extubation tube and necessary tools;

[0009] S2. Positioning and marking: Determine the location of the drainage hole according to the design drawing and mark it;

[0010] S3. Install the steel pipe: Before the warehouse is ready for pouring, insert the steel pipe cone downward into the drainage hole of the dam body, and fill the gap between the steel pipe and the drainage hole of the dam body with mortar;

[0011] S4, pouring concrete: unloading and laying the first layer of concrete around the steel pipe, and unloading and laying the second layer of concrete after the vibration is completed;

[0012] S5. Full-section rolling: After the concrete is poured and spread until it is flush with the top of the steel pipe, full-section rolling and compaction are carried out;

[0013] S6. Pipe pulling: After the concrete has initially set, use the pipe pulling tool to slowly lift the steel pipe. The lifting height of the steel pipe pulling corresponds to the thickness of the concrete laying.

[0014] S7, real-time monitoring: using sensors to monitor the status of the tube in real time during the extubation process;

[0015] S8, end: repeat steps S5 and S6 until the warehouse number is closed, and pull the steel pipe out of the concrete after the surface concrete is initially set;

[0016] S9. Process optimization: Collect construction data after tube removal and optimize the process and procedures.

[0017] Preferably, the length of the steel pipe drawing in the step S1 is 3-4m, and there is an expansion joint every 30cm on the steel pipe drawing, with an expansion joint in the middle, threaded rods are movably arranged on both sides of the inner wall, a sleeve is sleeved between the threaded rods, and nut 1 is movably arranged at both ends of the sleeve, nut 1 is threadedly connected to the threaded rod, and nut 2 is threadedly connected to the two threaded rods.

[0018] Preferably, the first layer of concrete spread in step S4 is used to reinforce and maintain the steel pipe to prevent concrete materials and other tools from tilting or hitting the steel pipe.

[0019] Preferably, in the step S5, after the full-section rolling, the steel pipe needs to be rotated once every half an hour. When rotating the steel pipe, first rotate it slowly at a small angle to the left and right, and then rotate it at a large angle.

[0020] Preferably, the sensors used in step S7 include pressure sensors, displacement sensors and vibration sensors.

[0021] Preferably, in the step S8, after the concrete pouring is completed and the steel tube is pulled out of the concrete, the hole needs to be immediately sealed with a plug, and the bonding concrete slurry on the steel tube needs to be scraped clean, and finally a layer of waste oil, lubricating butter or release agent needs to be applied on the surface of the steel tube.

[0022] Preferably, the allowable deviation of the plane position of the drainage holes of the dam body formed in the step S8 is 95 mm, and the allowable deviation of the inclination is 3°.

[0023] Preferably, in the step S9, the construction data after the tube removal is collected to establish a simulation model to optimize the process and flow, and the specific steps are as follows:

[0024] S9.1. Data collection: collect the time, length, speed of pipe extraction and the strength, density and elastic modulus parameters of concrete, and form a database together with historical construction data;

[0025] S9.2, Model construction: Based on the collected data, use software to create geometric models of the dam body, drainage holes and steel pipes, ensuring that the geometric features of the model are consistent with the actual structure;

[0026] S9.3, Model calculation: Perform simulation calculation according to the set conditions to simulate the force during the extubation process and its influence on the structure;

[0027] S9.4, Analysis and Verification: Through the key parameters obtained by simulation calculation, analyze the problems that arise during the construction process, and verify whether the results predicted by the model are consistent with the actual known data to ensure the accuracy of the model;

[0028] S9.5, simulation verification: using simulation models to simulate different process flows;

[0029] S9.6, Process Optimization: Conduct sensitivity analysis on key parameters to evaluate the impact of different conditions on the overall results, and then feed back the analysis results to the construction team to adjust and improve the process flow parameters.

[0030] Preferably, analyzing the problems arising during the construction process in step S9.4 includes studying the stress distribution and deformation of the structure during the pipe pulling process, identifying possible weak points or problem areas, and finding any potential failure modes caused by the pipe pulling process.

[0031] Preferably, the simulation of different process flows in step S9.5 includes simulating the pipe pulling process at different speeds, finding the speed that makes the structural stress and deformation smaller, simulating different drainage holes and surrounding structure designs, evaluating the impact on the construction effect, introducing different environmental conditions in the simulation, and evaluating their impact on the construction process.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The present invention pours and spreads concrete flush with the top of the steel pipe, and can use machinery to directly carry out large-scale rolling, thereby improving the density of concrete and improving work efficiency, reducing the labor intensity of construction workers, and having considerable economic benefits.

[0034] (2) The present invention establishes a simulation model by collecting real-time data, and compares the construction results with the model predictions, continuously adjusts the model according to the actual situation to improve the accuracy of the model, and then simulates different process flows by adjusting parameters, optimizes the current process flow and process parameters to obtain better results, reduce material waste and construction time, and reduce overall costs. The simulation model can simulate the structural response under different working conditions, thereby providing data support for the safety assessment of the process and reducing construction risks.

[0035] (3) The present invention can monitor the changes in the pressure in the hole in real time by installing pressure sensors around the drainage hole to ensure that the pressure during the pipe pulling process is not too high to damage the concrete structure. The displacement sensor can monitor the displacement changes during the steel pipe pulling process to ensure the coordinated movement of the pipe during the pulling process to avoid displacement or damage to the concrete. The vibration sensor can monitor the vibration during the pipe pulling process to determine whether the construction has a great impact so as to adjust the pipe pulling plan in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a block diagram of the specific steps of the present invention;

[0037] Figure 2 It is a process flow chart of the present invention;

[0038] Figure 3 A flowchart of specific steps for optimizing the process and flow of the present invention;

[0039] Figure 4 It is a schematic diagram of the overall structure of the steel pipe drawing of the present invention;

[0040] Figure 5 It is a top view cross-sectional view of the steel pipe drawing of the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] As attached Figure 1 To Attachment Figure 5 As shown:

[0043] Embodiment 1: The present invention provides a process for removing pipes from drainage holes in roller compacted concrete construction, and the specific steps are as follows:

[0044] S1. Equipment preparation: prepare the steel extubation tube and necessary tools;

[0045] S2. Positioning and marking: Determine the location of the drainage hole according to the design drawing and mark it;

[0046] S3. Install the steel pipe: Before the warehouse is ready for pouring, insert the steel pipe cone downward into the drainage hole of the dam body, and fill the gap between the steel pipe and the drainage hole of the dam body with mortar;

[0047] S4, pouring concrete: unloading and laying the first layer of concrete around the steel pipe, and unloading and laying the second layer of concrete after the vibration is completed;

[0048] S5. Full-section rolling: After the concrete is poured and spread until it is flush with the top of the steel pipe, full-section rolling and compaction are carried out;

[0049] S6. Pipe pulling: After the concrete has initially set, use the pipe pulling tool to slowly lift the steel pipe. The lifting height of the steel pipe pulling corresponds to the thickness of the concrete laying.

[0050] S7, real-time monitoring: using sensors to monitor the status of the tube in real time during the extubation process;

[0051] S8, end: repeat steps S5 and S6 until the warehouse number is closed, and pull the steel pipe out of the concrete after the surface concrete is initially set;

[0052] S9. Process optimization: Collect construction data after tube removal and optimize the process and procedures.

[0053] Specifically, the length of the steel pipe in step S1 is 3-4m, and there is an expansion joint every 30cm on the steel pipe. An expansion joint is set in the middle, and threaded rods are movably set on both sides of the inner wall. A sleeve is set between the threaded rods, and a nut 1 is movably set at both ends of the sleeve. Nut 1 is threadedly connected to the threaded rod, and nuts 2 are threadedly connected to the two threaded rods.

[0054] Specifically, the first layer of concrete spread in step S4 is used to reinforce and maintain the steel pipe to prevent concrete materials and other tools from tilting or hitting the steel pipe.

[0055] Specifically, in step S5, after the full section is rolled, it needs to be rotated every half an hour. When rotating the steel tube, first rotate it slowly at a small angle to the left and right, and then rotate it at a large angle until the steel tube can be easily rotated 720°. If the rotation is difficult, the lifting device can be used to connect the pull ring inside the steel tube to slightly lift the steel tube until it can be rotated, thereby reducing the friction resistance between the concrete and the steel tube and effectively avoiding the collapse of the hole.

[0056] From the above, it can be seen that by pouring and paving concrete flush with the top of the steel pipe, a large area can be directly rolled by machinery, which can improve the density of the concrete while improving work efficiency and reducing the labor intensity of construction workers. The economic benefits are considerable. By setting expansion joints every 30 cm, it can be stretched and opened when in use, and pressed and contracted when not in use, thereby reducing the occupied area of ​​the steel pipe and facilitating storage and carrying. In addition, the two nuts 1 can be turned at the same time to drive the threaded rod to move in the sleeve, and the diameter of the steel pipe can be adjusted through the set expansion joint, and then the nut 2 is turned to fit with the nut 1, so that the position of the nut 1 can be limited, the stability can be improved, and the diameter of the pipe can be adjusted as needed, which is convenient for personnel to use.

[0057] Embodiment 2: The present invention provides a process for removing pipes from drainage holes in roller compacted concrete construction, and the specific steps are as follows:

[0058] S1. Equipment preparation: prepare the steel extubation tube and necessary tools;

[0059] S2. Positioning and marking: Determine the location of the drainage hole according to the design drawing and mark it;

[0060] S3. Install the steel pipe: Before the warehouse is ready for pouring, insert the steel pipe cone downward into the drainage hole of the dam body, and fill the gap between the steel pipe and the drainage hole of the dam body with mortar;

[0061] S4, pouring concrete: unloading and laying the first layer of concrete around the steel pipe, and unloading and laying the second layer of concrete after the vibration is completed;

[0062] S5. Full-section rolling: After the concrete is poured and spread until it is flush with the top of the steel pipe, full-section rolling and compaction are carried out;

[0063] S6. Pipe pulling: After the concrete has initially set, use the pipe pulling tool to slowly lift the steel pipe. The lifting height of the steel pipe pulling corresponds to the thickness of the concrete laying.

[0064] S7, real-time monitoring: using sensors to monitor the status of the tube in real time during the extubation process;

[0065] S8, end: repeat steps S5 and S6 until the warehouse number is closed, and pull the steel pipe out of the concrete after the surface concrete is initially set;

[0066] S9. Process optimization: Collect construction data after tube removal and optimize the process and procedures.

[0067] Specifically, the length of the steel pipe in step S1 is 3-4m, and there is an expansion joint every 30cm on the steel pipe. An expansion joint is set in the middle, and threaded rods are movably set on both sides of the inner wall. A sleeve is set between the threaded rods, and a nut 1 is movably set at both ends of the sleeve. Nut 1 is threadedly connected to the threaded rod, and nuts 2 are threadedly connected to the two threaded rods.

[0068] Specifically, the first layer of concrete spread in step S4 is used to reinforce and maintain the steel pipe to prevent concrete materials and other tools from tilting or hitting the steel pipe.

[0069] Specifically, in step S5, after the full-section rolling, it is necessary to rotate once every half an hour. When rotating the steel pipe, first rotate it slowly at a small angle to the left and right, and then rotate it at a large angle.

[0070] Specifically, the sensors used in step S7 include pressure sensors, displacement sensors, and vibration sensors.

[0071] Specifically, in step S8, after the concrete pouring is completed and the steel tube is pulled out of the concrete, it is necessary to immediately seal the hole with a wooden plug to prevent flushing water or residue from entering the drainage hole, and scrape the bonding concrete slurry on the steel tube clean. Finally, apply a layer of waste engine oil, lubricating butter or release agent on the surface of the steel tube to ensure the quality of the steel tube.

[0072] Specifically, the allowable deviation of the plane position of the drainage holes of the dam body formed in step S8 is 95 mm, and the allowable deviation of the inclination is 3°.

[0073] From the above, it can be seen that by installing pressure sensors around the drainage holes, the changes in the pressure in the holes can be monitored in real time to ensure that the pressure during the pipe pulling process is not too high, so as to damage the concrete structure. The displacement sensor can be used to monitor the displacement changes during the steel pipe pulling process to ensure the coordinated movement of the pipe during the pulling process to avoid displacement or damage to the concrete. The vibration sensor can be used to monitor the vibration during the pipe pulling process to determine whether the construction has too much impact so that the pipe pulling plan can be adjusted in time.

[0074] Embodiment 3: The present invention provides a process for removing pipes from drainage holes in roller compacted concrete construction, and the specific steps are as follows:

[0075] S1. Equipment preparation: prepare the steel extubation tube and necessary tools;

[0076] S2. Positioning and marking: Determine the location of the drainage hole according to the design drawing and mark it;

[0077] S3. Install the steel pipe: Before the warehouse is ready for pouring, insert the steel pipe cone downward into the drainage hole of the dam body, and fill the gap between the steel pipe and the drainage hole of the dam body with mortar;

[0078] S4, pouring concrete: unloading and laying the first layer of concrete around the steel pipe, and unloading and laying the second layer of concrete after the vibration is completed;

[0079] S5. Full-section rolling: After the concrete is poured and spread until it is flush with the top of the steel pipe, full-section rolling and compaction are carried out;

[0080] S6. Pipe pulling: After the concrete has initially set, use the pipe pulling tool to slowly lift the steel pipe. The lifting height of the steel pipe pulling corresponds to the thickness of the concrete laying.

[0081] S7, real-time monitoring: using sensors to monitor the status of the tube in real time during the extubation process;

[0082] S8, end: repeat steps S5 and S6 until the warehouse number is closed, and pull the steel pipe out of the concrete after the surface concrete is initially set;

[0083] S9. Process optimization: Collect construction data after tube removal and optimize the process and procedures.

[0084] Specifically, the length of the steel pipe in step S1 is 3-4m, and there is an expansion joint every 30cm on the steel pipe. An expansion joint is set in the middle, and threaded rods are movably set on both sides of the inner wall. A sleeve is set between the threaded rods, and a nut 1 is movably set at both ends of the sleeve. Nut 1 is threadedly connected to the threaded rod, and nuts 2 are threadedly connected to the two threaded rods.

[0085] Specifically, the first layer of concrete spread in step S4 is used to reinforce and maintain the steel pipe to prevent concrete materials and other tools from tilting or hitting the steel pipe.

[0086] Specifically, in step S5, after the full-section rolling, it is necessary to rotate once every half an hour. When rotating the steel pipe, first rotate it slowly at a small angle to the left and right, and then rotate it at a large angle.

[0087] Specifically, the sensors used in step S7 include pressure sensors, displacement sensors, and vibration sensors.

[0088] Specifically, in step S8, after the concrete pouring is completed and the steel tube is pulled out of the concrete, it is necessary to immediately seal the hole with a plug, and scrape the bonding concrete slurry on the steel tube clean, and finally apply a layer of waste oil, lubricating butter or release agent on the surface of the steel tube.

[0089] Specifically, the allowable deviation of the plane position of the drainage holes of the dam body formed in step S8 is 95 mm, and the allowable deviation of the inclination is 3°.

[0090] Specifically, in step S9, the construction data after the pipe removal is collected to establish a simulation model to optimize the process and flow. The specific steps are as follows:

[0091] S9.1. Data collection: collect the time, length, speed of pipe extraction and the strength, density and elastic modulus parameters of concrete, and form a database together with historical construction data;

[0092] S9.2, Model construction: Based on the collected data, use software to create geometric models of the dam body, drainage holes and steel pipes, ensuring that the geometric features of the model are consistent with the actual structure;

[0093] S9.3, Model calculation: Perform simulation calculation according to the set conditions to simulate the force during the extubation process and its influence on the structure;

[0094] S9.4, Analysis and Verification: Through the key parameters obtained by simulation calculation, analyze the problems that arise during the construction process, and verify whether the results predicted by the model are consistent with the actual known data to ensure the accuracy of the model;

[0095] S9.5, simulation verification: using simulation models to simulate different process flows;

[0096] S9.6, process optimization: Conduct sensitivity analysis on key parameters, evaluate the impact of different conditions on the overall results, help select the best process conditions, and then feed back the analysis results to the construction team to adjust and improve the process parameters to improve construction efficiency and quality.

[0097] Specifically, the analysis of problems that arise during construction in step S9.4 includes studying the stress distribution and deformation of the structure during the tube extraction process, identifying possible weak points or problem areas, and looking for any potential failure modes caused by the tube extraction process, such as excessive displacement or stress concentration.

[0098] Specifically, the simulation of different process flows in step S9.5 includes simulating the pipe pulling process at different speeds, finding the speed that makes the structural stress and deformation smaller, simulating different drainage holes and surrounding structure designs, evaluating the impact on the construction effect, and introducing different environmental conditions in the simulation to evaluate their impact on the construction process.

[0099] From the above, we can see that by collecting real-time data to establish a simulation model, and comparing the construction results with the model predictions, the model is constantly adjusted according to the actual situation to improve the accuracy of the model, and then by adjusting the parameters to simulate different process flows, the current process flow and process parameters are optimized to obtain better results, reduce material waste and construction time, and reduce overall costs. The simulation model can simulate the structural response under different working conditions, thereby providing data support for the safety assessment of the process and reducing construction risks.

[0100] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0101] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0102] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0103] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A pipe pulling process for drainage holes in roller compacted concrete construction, characterized in that: The specific steps are as follows: S1. Equipment preparation: prepare the steel extubation tube and necessary tools; S2. Positioning and marking: Determine the location of the drainage hole according to the design drawing and mark it; S3. Install the steel pipe: Before the warehouse is ready for pouring, insert the steel pipe cone downward into the drainage hole of the dam body, and fill the gap between the steel pipe and the drainage hole of the dam body with mortar; S4, pouring concrete: unloading and laying the first layer of concrete around the steel pipe, and unloading and laying the second layer of concrete after the vibration is completed; S5. Full-section rolling: After the concrete is poured and spread until it is flush with the top of the steel pipe, full-section rolling and compaction are carried out; S6. Pipe pulling: After the concrete has initially set, use the pipe pulling tool to slowly lift the steel pipe. The lifting height of the steel pipe pulling corresponds to the thickness of the concrete laying. S7, real-time monitoring: using sensors to monitor the status of the tube in real time during the extubation process; S8, end: repeat steps S5 and S6 until the warehouse number is closed, and pull the steel pipe out of the concrete after the surface concrete is initially set; S9. Process optimization: Collect construction data after tube removal and optimize the process and procedures.

2. A pipe pulling process for drainage holes in roller compacted concrete construction according to claim 1, characterized in that: The length of the steel pipe in step S1 is 3-4m, and there is an expansion joint every 30cm on the steel pipe, with an expansion joint in the middle. Threaded rods are movably arranged on both sides of the inner wall, and sleeves are sleeved between the threaded rods. Nut 1 is movably arranged at both ends of the sleeve, and nut 1 is threadedly connected to the threaded rod. Nut 2 is threadedly connected to the two threaded rods.

3. A pipe pulling process for drainage holes in roller compacted concrete construction according to claim 2, characterized in that: The first layer of concrete spread in the step S4 is used to reinforce and maintain the steel pipe, and prevent the concrete material and other tools from tilting or hitting the steel pipe.

4. A pipe pulling process for drainage holes in roller compacted concrete construction according to claim 3, characterized in that: In the step S5, after the full section is rolled, it is necessary to rotate once every half an hour. When rotating the steel pipe, first rotate slowly at a small angle to the left and right, and then rotate at a large angle.

5. A process for removing pipes from drainage holes in roller compacted concrete construction according to claim 4, characterized in that: The sensors used in step S7 include pressure sensors, displacement sensors and vibration sensors.

6. A process for removing pipes from drainage holes in roller compacted concrete construction according to claim 5, characterized in that: In the step S8, after the concrete pouring is completed and the steel tube is pulled out of the concrete, the hole needs to be immediately blocked with a plug, and the bonding concrete slurry on the steel tube needs to be scraped clean, and finally a layer of waste oil, lubricating butter or release agent needs to be applied on the surface of the steel tube.

7. A process for removing pipes from drainage holes in roller compacted concrete construction according to claim 6, characterized in that: The allowable deviation of the plane position of the drainage holes of the dam body formed in the step S8 is 95 mm, and the allowable deviation of the inclination is 3°.

8. A process for removing pipes from drainage holes in roller compacted concrete construction according to claim 7, characterized in that: In the step S9, the construction data after the pipe removal is collected to establish a simulation model to optimize the process and flow. The specific steps are as follows: S9.

1. Data collection: collect the time, length, speed of pipe extraction and the strength, density and elastic modulus parameters of concrete, and form a database together with historical construction data; S9.2, Model construction: Based on the collected data, use software to create geometric models of the dam body, drainage holes and steel pipes, ensuring that the geometric features of the model are consistent with the actual structure; S9.3, Model calculation: Perform simulation calculation according to the set conditions to simulate the force during the extubation process and its influence on the structure; S9.4, Analysis and Verification: Through the key parameters obtained by simulation calculation, analyze the problems that arise during the construction process, and verify whether the results predicted by the model are consistent with the actual known data to ensure the accuracy of the model; S9.5, simulation verification: using simulation models to simulate different process flows; S9.6, Process Optimization: Conduct sensitivity analysis on key parameters to evaluate the impact of different conditions on the overall results, and then feed back the analysis results to the construction team to adjust and improve the process flow parameters.

9. A process for removing pipes from drainage holes in roller compacted concrete construction according to claim 8, characterized in that: Analyzing problems that arise during construction in step S9.4 includes studying the stress distribution and deformation of the structure during the tube extraction process, identifying possible weak points or problem areas, and looking for any potential failure modes caused by the tube extraction process.

10. A process for removing pipes from drainage holes in roller compacted concrete construction according to claim 9, characterized in that: The simulation of different process flows in step S9.5 includes simulating the pipe pulling process at different speeds, finding the speed that makes the structural stress and deformation smaller, simulating different drainage holes and surrounding structure designs, evaluating the impact on the construction effect, introducing different environmental conditions in the simulation, and evaluating their impact on the construction process.

Citation Information

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