Construction method of water supply and drainage system

Abstract

The invention relates to the field of building construction, and discloses a water supply and drainage system construction method which comprises the following steps: acquiring an internal structure and a pipeline layout of a building through a non-intrusive scanning technology, and constructing a three-dimensional model; based on a multi-objective optimization algorithm, determining an optimal layout path of the pipeline so as to reduce damage to a building structure; minimally invasive grooving is carried out along the optimized path, and the stress distribution of a grooving area is controlled through finite element analysis, so that the influence on a bearing structure is avoided; the novel water supply and drainage pipeline is accurately installed in the groove, and sealing treatment is conducted to ensure the waterproof performance; and finally, repairing the slotting position, and carrying out pressure and flow test acceptance on the system. According to the method, through path optimization, precise construction and repair treatment, the water supply and drainage system is updated efficiently in an environment-friendly mode on the premise that the building structure is protected, and remarkable practicability and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a water supply and drainage system construction method. Background Art

[0002] With the advancement of urbanization, more and more old and historical buildings are facing the problem of aging water supply and drainage systems, and they are in urgent need of renovation and upgrading. However, due to the special structural requirements and protection value of these buildings, traditional construction methods mostly require large-scale excavation during the construction process, which is easy to cause damage to the main structure of the building and may even cause irreversible damage to the load-bearing structure. In addition, traditional large-scale excavation construction will also bring more dust and noise pollution, affecting the surrounding environment and the daily life of residents. The time cost and labor cost of construction are also high, resulting in a long overall construction period and low efficiency, which increases the overall cost of the project.

[0003] In response to these problems, although the existing improvement measures have alleviated some of the problems, there are still obvious shortcomings. For example, although minimally invasive drilling technology can reduce the excavation area to a certain extent, it is difficult to meet the needs of large-scale construction due to its low construction efficiency and limited applicable scenarios. Although the use of prefabricated pipe combination installation method can speed up the construction speed, it lacks flexibility in actual complex environments and is difficult to adjust to the environment, which limits the widespread application of this technology. In addition, the casing method avoids excavation by inserting a new pipe into the original pipe. Although it reduces damage, it often causes problems such as poor water flow due to the difficulty in controlling the gap between the new and old pipes, affecting the overall performance of the system.

[0004] The existing technologies are not versatile enough and flexible enough in these renovation processes. They cannot be flexibly adjusted to different building structures and site conditions, and it is difficult to ensure the protection of the main structure of the building during the construction process while ensuring construction efficiency. Therefore, how to reduce damage to the building structure while ensuring construction efficiency and system reliability has become a key issue in the renovation of water supply and drainage systems in old buildings. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a water supply and drainage system construction method, which can carry out high-efficiency and low-damage water supply and drainage system reconstruction on old buildings without destroying the main structure of the building.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A water supply and drainage system construction method, comprising the following steps: Conduct preliminary survey and design, and obtain the internal structural diagram of the building and the layout of the existing water supply and drainage pipelines through non-invasive scanning technology; determine the optimal layout path of the pipeline in the three-dimensional model based on the survey data; Minimally invasive grooving along the optimal path to avoid damage to the load-bearing structure; Install the water supply and drainage pipes at the slotted positions and seal the interfaces; After the new pipe is installed, the grooved position is repaired and the system acceptance is carried out.

[0007] Preferably, the preliminary survey and design steps include: Acquire building structure data through lidar scanning, infrared scanning and computer tomography; Use image recognition algorithms to identify obstacles, load-bearing structures and existing pipes within buildings; A three-dimensional model including the internal structure of the building, obstacles and pipelines is established based on the acquired three-dimensional point cloud data.

[0008] Preferably, the step of determining the optimal layout path of the pipeline includes: The multi-objective optimization algorithm is used to optimize the path. The optimization objectives include path length, structural damage risk, and water flow resistance. In path length optimization, the total length of the pipeline section is calculated and minimized to reduce construction costs. In the optimization of structural damage risk, the path avoids key parts such as load-bearing walls to reduce damage to the building; In water flow resistance optimization, the resistance caused by water flow is reduced by adjusting the pipeline layout to ensure the water delivery efficiency of the water supply and drainage system.

[0009] Preferably, the multi-objective optimization algorithm is a genetic algorithm or a particle swarm optimization algorithm.

[0010] Preferably, the minimally invasive grooving step comprises: Marking slotting locations along the determined optimal path; The finite element analysis method is used to simulate the stress distribution in the slotted area to ensure that the slotting will not damage the overall structure of the building; Use machinery to cut grooves to avoid damage to the building's load-bearing structure.

[0011] Preferably, the finite element analysis includes: Simulate stress distribution to ensure that stress in the slotted area does not exceed the allowable limit of the building material; The stress distribution is adjusted by controlling the groove depth and position to avoid damage to the surrounding structure during the groove process.

[0012] Preferably, the pipeline installation steps include: Use computational fluid dynamics to simulate water flow in pipes; Optimize pipe diameter and layout angle based on water flow simulation results to reduce turbulence and resistance.

[0013] Preferably, the sealing step comprises: Provide sealing materials at the pipe joints; Contact stress distribution analysis ensures that the sealing pressure is sufficient to prevent water leakage.

[0014] Preferably, the repairing step of the grooved position includes filling the grooved position with a fast-curing epoxy resin mortar so that the grooved surface is consistent with the surrounding environment after the repair.

[0015] Preferably, the system acceptance step includes: Ensure the tightness of the pipeline interface through pressure testing and detect leakage; Use flow rate and flow detection instruments to measure the flow of newly installed water supply and drainage systems to ensure that they meet the design specifications.

[0016] The present invention provides a water supply and drainage system construction method, which has the following beneficial effects: 1. The present invention obtains the internal structure information of the building through non-invasive scanning and three-dimensional modeling technology, and uses a multi-objective optimization algorithm in path planning to effectively avoid key load-bearing structures and complex areas, thereby minimizing the damage to the building structure during the construction process. It is suitable for renovation projects of old buildings and historical buildings that need to be protected.

[0017] 2. The present invention adopts precise path planning and minimally invasive grooving technology during the construction process, and uses quick connector devices and automated positioning tools, which shortens the installation and repair time, improves the overall construction efficiency, and reduces the construction time and labor costs commonly seen in traditional methods.

[0018] 3. The present invention optimizes the flow velocity and pressure distribution of water flow in the pipeline through fluid dynamics simulation, and combines it with precise sealing design to ensure the waterproofness of the pipeline interface and the fluid transportation efficiency of the system, so that the newly installed water supply and drainage system has long-term stability and service life.

[0019] 4. The present invention uses fast-curing and highly compressive repair materials to repair the grooved area, so that the repaired area is consistent with the surrounding structure, ensuring the aesthetics and durability after construction, and meeting the special requirements in the renovation of historical buildings and exquisite buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the method flow of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the specification 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.

[0022] Please see attached Figure 1 , an embodiment of the present invention provides a water supply and drainage system construction method, which aims to complete the renewal of the water supply and drainage system without damaging the building structure by optimizing the construction process and introducing advanced non-invasive detection and analysis technology. The method of the present invention is particularly suitable for protective repair projects of old buildings or historical buildings, which minimizes the damage to the building structure during construction and ensures the efficiency and environmental protection of the construction. The implementation of the method of the present invention is described in detail below in combination with specific steps.

[0023] S1. Preliminary Survey and Design The preliminary survey and design stage of step S1 is a key preparatory step to ensure that the building structure is minimally damaged during the construction process. By conducting a detailed survey and modeling of the internal structure of the building before construction, the present invention achieves scientific planning of the construction path and precise control of the construction impact in subsequent steps.

[0024] Specifically, step S1 uses a variety of non-invasive scanning technologies and 3D modeling methods to obtain the precise structural diagram of the building and the distribution of existing water supply and drainage pipes, providing basic data support for subsequent path optimization, grooving construction and installation. Through this survey and design step, the risk of structural damage caused by blind construction can be effectively avoided.

[0025] In this embodiment, non-invasive scanning technologies such as laser radar scanning, infrared scanning, and computer tomography (CT) are mainly used in the preliminary survey and design stage. Generally, laser radar scanning is used to construct a three-dimensional point cloud model of the internal structure of the building, infrared scanning technology is used to identify the temperature difference of pipelines and other components, and computer tomography can further improve the recognition accuracy.

[0026] In one possible implementation, LiDAR scanning technology can be used to perform a global scan of the interior of a building, generating 3D point cloud data containing all structural components. These point cloud data can highly accurately reflect the spatial layout, wall distribution, and pipe locations of the building. LiDAR scanning accuracy can usually reach the millimeter level, which is suitable for identifying key load-bearing structures and existing pipe locations to ensure the integrity of the model data.

[0027] As an option, infrared scanning can be used to detect temperature differences, especially in the detection of existing water supply and drainage pipes. Specifically, infrared scanning technology can capture the temperature difference between the water flow and the pipe material in the pipe, thereby effectively locating the distribution of existing pipes. Combining temperature difference data with point cloud data can further improve the accuracy of the 3D model.

[0028] In this embodiment, infrared scanning can not only detect pipes made of metal and plastic materials, but also identify the dynamic characteristics of fluid flow, which is suitable for the investigation of complex pipeline layouts.

[0029] In some embodiments, computed tomography (CT) technology can also be used to more closely survey the interior of a building. CT scanning technology is suitable for detecting dense structural features inside a building. Specifically, by scanning the interior of a building layer by layer, multi-layer images of the cross-section of the interior of the building can be generated. These images can be used as structural data supplements for a three-dimensional model, and are particularly suitable for carefully identifying hidden or complex pipes and key structures. CT scanning usually has a high resolution, which can accurately identify small structures within a building, and further calibrate the point cloud and temperature difference data obtained by lidar and infrared scanning to ensure the high accuracy of the model.

[0030] During the model generation process, this embodiment uses image recognition and machine learning technology to process the scanned data to automatically identify and mark the load-bearing structures, obstacles, and existing pipelines in the building.

[0031] In one possible implementation, image recognition algorithms are used to automatically classify and label point clouds in lidar and infrared scanning data, and structural features such as load-bearing walls, beams, and existing pipes can be clearly labeled. By learning from a large number of building structure samples, machine learning models can automatically classify different features in the data, so that the internal structure of the building can be labeled in detail.

[0032] Specifically, the classification and labeling process of point cloud data includes the following steps: First, the point cloud data is preliminarily analyzed based on the image recognition algorithm to roughly classify large structures such as walls and columns in the building; Then, the initially classified point cloud is subjected to a more detailed feature decomposition through a machine learning algorithm, and smaller structures such as pipes and obstacles are identified in detail.

[0033] In one possible implementation, the model training process of the machine learning algorithm relies on the training of a large amount of building data, so that a three-dimensional structural diagram of the building can be automatically generated based on the data from lidar and infrared scanning.

[0034] In a specific implementation of the present invention, the data from LiDAR scanning, infrared scanning and CT scanning are integrated through 3D modeling technology to construct a 3D model containing all the details of the interior of the building. Generally, this 3D model includes all load-bearing structures, existing pipeline layouts, and the distribution of obstacles that may affect construction.

[0035] As an option, real-time dynamic pipeline data can be added to the 3D model to ensure the real-time and integrity of the model.

[0036] In the specific modeling implementation process, this embodiment can also improve the accuracy and data integrity of the model through joint analysis of various technologies.

[0037] In the point cloud model generated by LiDAR, the walls, columns, and beams of the building can be clearly identified; In the thermal map generated by infrared scanning, the temperature difference data can mark the distribution of the temperature difference between the existing pipeline and its fluid; In the CT scan data, the internal cross-sectional details of the building can further provide depth reference information for the 3D model.

[0038] The three-dimensional model generated by integrating these data can be displayed in the form of image layering or spatial layering, ensuring that the subsequent construction process can accurately locate the structural features and pipeline distribution positions.

[0039] After the model data is generated, the 3D model in this embodiment will be used for path planning, slot positioning and installation guidance. In one possible implementation, the generated model can not only provide a reference for determining the best path, but also display and monitor the construction changes inside the building in real time during the construction process. For example, the slot position and installation path can be updated in real time in the 3D model to ensure the visibility and accuracy of the construction operation and reduce the risk of structural damage.

[0040] S2. Determine the optimal layout path of the pipeline Step S2 aims to use the three-dimensional building structure data obtained in the previous survey to plan the pipeline layout path through the optimization algorithm. In the process of determining the optimal pipeline path, this step takes into account multiple factors such as path length, building structure protection, and water flow efficiency to achieve a balance between building structure protection and construction efficiency. By using a multi-objective optimization algorithm, the optimal path that meets the conditions is found in the complex environment of the building structure, thereby minimizing the potential damage to the building during the construction process and ensuring the rationality of the system layout.

[0041] In this embodiment, by constructing the three-dimensional model data obtained in step S1, a comprehensive analysis is performed on the spatial distribution of the load-bearing structure, pipeline layout and other obstacles inside the building. Generally, this embodiment uses a genetic algorithm or a particle swarm optimization algorithm to achieve multi-objective optimization of the path. In path planning, specific goals include minimizing the path length, avoiding key building structures and reducing water flow resistance.

[0042] As an option, in practical applications, the parameters of the optimization algorithm can be adjusted according to the specific structural complexity and construction requirements of the building to achieve different optimization priorities.

[0043] Specifically, the objective function of path optimization in this embodiment is set as follows: MinimizeZ=αL+βW+γS Among them, α, β and γ are weight coefficients, which are used to allocate weights among different objectives to meet actual engineering needs.

[0044] In one possible implementation, the selection of the weight coefficient can be adjusted according to the priority of the construction requirements. For example, in a building with a high-strength load-bearing structure, the β value is increased first to minimize damage to the key structure.

[0045] In the path length optimization, the optimization goal of the path length L in this embodiment is set to minimize the total path length. The path length L represents the total length of the entire water supply and drainage pipeline layout path, which is used to reduce construction material and labor costs. The optimization expression of the path length is: Among them, d i represents the length of pipeline segment i, and n represents the number of segments in the path. Generally speaking, a shorter path length can effectively reduce the consumption of construction materials and shorten the construction time. In some cases, the path length can be moderately relaxed according to the special requirements of the construction site to take into account the realization of other optimization goals.

[0046] In terms of optimizing the risk of structural damage, in this embodiment, a higher "risk weight" is set for key structures such as load-bearing walls and columns in the building to achieve the goal of avoiding key structures. The expression for building structure protection optimization is as follows: Among them, r j is the weight coefficient of the key structure (reflecting the importance of the structure), δ j is an indicator variable. When the path passes through this key part, j =1, otherwise δ j = 0. m is the number of key parts that need to be protected in the building.

[0047] As an option, in the path planning process, this embodiment sets a higher risk weight coefficient for load-bearing walls and key columns to ensure that these key structures will not be damaged by construction. j value, which can further strengthen the protection of load-bearing walls.

[0048] In terms of optimizing water flow resistance, in this embodiment, the pipeline path is optimized according to the principle of fluid mechanics to reduce the water flow resistance in the pipeline. In multi-objective optimization, the calculation of water flow resistance S is based on the Poiseuille equation, that is, by adjusting the pipeline layout to reduce the turbulence and resistance of the water flow in the pipeline, ensure smooth water flow, and achieve efficient operation of the water supply and drainage system. The optimization target expression of water flow resistance is as follows: Where η represents the fluid viscosity, L k represents the length of the pipe segment, Q k is the water flow rate, r k Indicates the radius of the pipe section. Specifically, in this embodiment, a smaller path curvature and an appropriate pipe diameter design are used to reduce turbulence in the water flow and ensure the water delivery efficiency of the pipe. In some cases, by appropriately increasing the pipe radius, the water flow resistance can be effectively reduced to ensure the stability of the water flow and the smoothness of the flow rate.

[0049] In a possible implementation, this embodiment applies an optimization algorithm to solve a multi-objective function, and finds a path that minimizes Z through an iterative evolution process of a genetic algorithm. Generally, a genetic algorithm can effectively handle multi-objective optimization problems and is suitable for path planning under multiple constraints.

[0050] When the algorithm is initialized, an initial path group is first generated based on the 3D model data; then new path combinations are generated through crossover and mutation operations to continuously approach the optimal solution. In the path selection process, this embodiment combines the fitness function with the multi-objective optimization function to ensure that the final path achieves the expected goals in terms of building protection, construction efficiency and system performance.

[0051] S3, micro-invasive grooving along the optimal path Step S3 is used to perform micro-invasive grooving on the determined optimal path to provide space for subsequent pipeline installation. In this step, grooving technology is combined with stress distribution analysis to avoid damage to the building's load-bearing structure, while controlling the impact of thermal stress during the cutting process. This step uses finite element analysis (FEA) technology to ensure that the overall stability of the building is minimally affected during construction.

[0052] In this embodiment, the minimally invasive grooving operation is performed along the optimal path determined in step S2. Generally, the grooving positions are distributed along the predetermined pipeline path inside the building. To ensure accuracy and safety during the construction process, the stress distribution in the grooving area needs to be simulated by finite element analysis.

[0053] In a possible implementation, this embodiment first marks the path on the surface of the building to clarify the location and range of the grooves, and ensures that the depth and width of the groove cutting are consistent with the path planning design.

[0054] In this embodiment, the stress distribution of the slotted area is simulated by the finite element analysis (FEA) method to ensure that the cutting process will not have a destructive effect on the load-bearing structure of the building. Specifically, the stress distribution calculation formula used in the finite element analysis is as follows: Among them, σ represents the material stress in the slot area, F is the force acting on the slot position, and A is the slot cross-sectional area.

[0055] In some embodiments, the allowable stress value of the building material is pre-set as a reference standard, and the stress value obtained through finite element analysis must not exceed the allowable stress, thereby avoiding breakage or deformation of the material during slotting.

[0056] As an option, the allowable stress value can be adjusted according to factors such as the type of building materials and the age of the building to meet the needs of different building environments.

[0057] In the slotting process, the present embodiment uses mechanical equipment to cut to reduce the impact on the surrounding building structure. Generally, the used machinery can be flexibly operated in a small space and is suitable for precise slotting operations inside buildings.

[0058] In a specific implementation, the mechanical device of this embodiment has an automatic alignment function and maintains the stability of the cutting path during the grooving process to prevent cutting deviation.

[0059] As a possible implementation method, during the equipment cutting process, the grooving depth is controlled within the range that does not damage the load-bearing wall. At the same time, the cutting width is based on being able to accommodate the pipe. By controlling the equipment, high precision and low damage of the grooving operation are guaranteed.

[0060] In a possible implementation, the present embodiment can also adjust the depth and width of the micro-traumatic grooves according to different types of building structures and construction requirements. For example, in a concrete structure with high compressive strength, the groove depth can be appropriately increased to ensure the stability of the pipeline layout; while in a material structure with lower compressive strength, the groove depth can be reduced to avoid the impact of the cutting process on the building structure.

[0061] In general, the minimally invasive grooving step in this embodiment ensures that the grooving process can be carried out strictly according to the planned path and will not cause destructive effects on the building structure by combining path marking, grooving equipment and finite element analysis simulation. This multi-level control method has good adaptability in a variety of construction environments, so that the present invention has excellent implementation effects in the construction of low-damage water supply and drainage systems.

[0062] S4. Install new pipes and seal them The purpose of step S4 is to accurately install the new water supply and drainage pipe in the opened groove and effectively seal the pipe interface to ensure the long-term stability and waterproof performance of the system. In this step, fluid dynamics simulation is used to optimize the flow rate and pressure distribution of the water flow in the pipe to reduce the pipe resistance, and high-performance sealing materials and contact stress control are used to ensure that each interface is well sealed, thereby achieving the safety and reliability of the system.

[0063] In this embodiment, based on the layout plan and slot positions of the previous path optimization, the pre-processed water supply and drainage pipes are installed and the interface parts are sealed. In general, the layout and diameter of the pipe installation need to be optimized according to the requirements of water flow velocity and pressure to ensure that the water flow resistance of the pipe system is small and the flow velocity is stable during operation.

[0064] In one possible implementation, this embodiment simulates the water flow in the pipeline by computational fluid dynamics (CFD) to predict the effects of different layouts and pipe diameters on the water flow characteristics. Specifically, the flow velocity and pressure of the water flow can be calculated by the Poiseuille equation: Among them, Q represents the flow rate, ΔP is the pressure difference between the two ends of the pipe, r is the radius of the pipe, η is the viscosity of the fluid, and L is the length of the pipe. In general, by increasing the pipe radius r or reducing the pipe length L, the water flow resistance can be effectively reduced, thereby ensuring that the system can achieve the expected flow demand under moderate pressure conditions.

[0065] In some embodiments, in order to further optimize the flow velocity and pressure distribution, this embodiment adopts an arc transition design for the corners of the pipeline to reduce turbulence and water flow disturbance and improve water delivery efficiency.

[0066] In this embodiment, a precise positioning tool is used when installing the pipeline so that the pipeline is laid strictly along a predetermined path.

[0067] As an option, the positioning tool can be set with an automatic leveling function to ensure that the horizontality and verticality of the pipe in the groove meet the design requirements and avoid poor water flow due to installation errors. In addition, in the process of connecting the pipes, the present embodiment adopts a quick connector device to make the connection between the pipe sections more stable and shorten the construction time. In practical applications, the quick connector can improve construction efficiency while ensuring the tight connection of the pipe interface, providing a basis for subsequent sealing operations.

[0068] After the pipeline is installed, the interface is precisely sealed to prevent leakage in the long-term use of the system. Generally, the sealing material is a highly elastic and corrosion-resistant epoxy resin, which not only maintains stability in a high humidity environment, but also has strong adhesion to the pipeline, and is suitable for waterproof sealing of the water supply and drainage system.

[0069] In terms of sealing pressure control, this embodiment is based on contact mechanics theory and uses stress distribution analysis to ensure that the sealing pressure of the interface is appropriate to ensure the sealing effect. Specifically, the sealing pressure σ c It can be calculated according to the following formula: Among them, σ c is the sealing pressure at the interface, P is the contact force, A c It is the contact area of ​​the interface. Generally speaking, appropriate sealing pressure can ensure the waterproof effect of the interface, while too high sealing pressure may cause material fatigue or damage.

[0070] In a possible implementation, the sealing pressure is adjusted according to the actual requirements of the pipe material and the installation environment to achieve the best waterproof effect and durability. For example, in a high-pressure fluid environment, the sealing pressure can be appropriately increased to ensure the reliability of the interface, while in a normal pressure or low pressure environment, the sealing pressure can be correspondingly reduced to extend the life of the sealing material.

[0071] In terms of the selection of sealing materials, this embodiment gives priority to the use of fast-curing high-elastic epoxy resin mortar, which has a fast curing speed and can quickly achieve a sealing effect after construction.

[0072] In some embodiments, in order to further enhance the pressure resistance and durability of the sealing material, fillers (such as glass fiber or corrosion-resistant powder) may be added to provide better structural stability under high pressure environments. In addition, the sealing material should be water-resistant and acid- and alkali-resistant to ensure long-term stability under different water quality conditions.

[0073] As an option, when used in cold climates, antifreeze agents may be added to the seal material to prevent embrittlement in low temperature environments.

[0074] In general, the pipeline installation and sealing steps in this embodiment achieve efficient and stable connection of the water supply and drainage system by combining fluid dynamics simulation, precision positioning installation, contact stress control and the application of high-performance sealing materials.

[0075] S5. Complete slotting position repair and system acceptance Step S5 is used to repair the slotted position of the installed pipeline system and conduct a final quality inspection of the entire system. This step restores the structural integrity of the slotted area through high-strength repair materials, and conducts comprehensive system tests, including pressure tests and flow tests, to ensure the stability and sealing effect of the pipeline system. The successful completion of this step helps the long-term safe operation of the system and ensures the beauty and durability after construction.

[0076] In this embodiment, after the pipe installation and sealing are completed, the grooved area is repaired to ensure the integrity of the building appearance, and the water supply and drainage system is inspected and accepted through a series of testing methods. In general, the repair material should have the characteristics of fast curing, strong pressure resistance and good compatibility with the building surface.

[0077] Therefore, this embodiment preferably uses fast-curing epoxy resin mortar as the repair material. Epoxy resin mortar has high adhesion and can be cured quickly, which is suitable for building repair needs.

[0078] As an option, fine fillers can be added to the epoxy mortar to enhance the compressive strength of the repaired structure, depending on the building’s material and specific needs.

[0079] Specifically, the repair thickness and width of the grooved position should be consistent with the surrounding building surface to ensure aesthetics. The thickness of the repair material in this embodiment can be calculated by the following formula: Where t is the thickness of the repair material, F is the load acting on the repair area, A is the groove cross-sectional area, σ m The compressive strength of the material. Generally speaking, the thickness of the repair material should be appropriate, which should not only meet the structural strength requirements but also not affect the appearance.

[0080] In some embodiments, anti-aging agents may be added to the repair material to improve its weather resistance and durability in long-term use and to make it suitable for various environmental conditions.

[0081] After the groove repair is completed, this embodiment also performs a final acceptance test on the newly installed water supply and drainage system, including a pressure test and a flow test. In general, the pressure test can verify the tightness of the pipeline system, that is, the waterproof performance of the pipeline interface under the working pressure. Specifically, this embodiment adopts a step-by-step pressurization method to gradually increase the test pressure to 1.5 times the design working pressure to verify the tightness of the interface.

[0082] In a possible implementation, during the pressure test, the pressure change of each interface is monitored by a pressure sensor to ensure that there is no leakage under the specified pressure conditions.

[0083] In addition, in this embodiment, the water delivery capacity of the system is verified by flow test to ensure that the flow of the new pipeline system meets the design specifications. The flow rate Q can be calculated by the following formula: Q=v·A Among them, v is the average flow velocity of the water flow in the pipeline, and A is the cross-sectional area of ​​the pipeline. In general, flow tests use high-precision flow measurement instruments to measure the water flow rate and flow rate in the pipeline at multiple points to verify the stability of the water flow.

[0084] In some embodiments, flow testing can be combined with water quality monitoring to ensure that the water quality in the newly installed pipes meets the standards. After the flow and pressure test results are recorded, the data can be processed through statistical analysis to ensure the stability and consistency of the test results.

[0085] In terms of data analysis, this embodiment uses statistical analysis methods to perform variance analysis on the test data to verify the stability of the pipeline system. Specifically, variance analysis is used to determine the degree of discreteness of pressure and flow data, thereby determining the reliability of the system in long-term operation.

[0086] As an option, if there are large fluctuations in pressure and flow data, it may indicate potential risks in the pipeline. Further inspection and debugging can be carried out to ensure that the system meets safe operation requirements.

[0087] In one possible implementation, this embodiment performs an aesthetic inspection on the slot repair location after system acceptance to ensure that the appearance of the repaired building is consistent with the original structure. For example, in the restoration of historical buildings, the color and texture of the repair materials should match the original building materials. In some special scenarios, the repair location can also be surface treated or coated to improve the overall appearance.

[0088] In general, step S5 in this embodiment ensures the stability and safety of the water supply and drainage system by repairing the grooved positions, performing pressure and flow tests, and performing aesthetic inspections, thus providing a basis for the final acceptance of the construction.

[0089] In general, the present invention realizes the efficient completion of the renewal of the water supply and drainage system under the premise of protecting the building structure through non-invasive scanning, three-dimensional model path optimization, minimally invasive grooving, precision pipeline installation and sealing, as well as grooving repair and system acceptance. The optimal pipeline path is determined by a multi-objective optimization algorithm, and the construction quality is controlled by combining finite element stress analysis and fluid dynamics simulation to ensure the accuracy of pipeline installation and the reliability of system operation. This method is suitable for the protective renovation of old and historical buildings, significantly reducing the structural damage and environmental impact in traditional construction methods, and has good economy and adaptability.

[0090] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water supply and drainage system construction method, characterized in that: The following steps are involved: Conduct preliminary survey and design, and obtain the internal structural diagram of the building and the layout of the existing water supply and drainage pipelines through non-invasive scanning technology; Determine the optimal pipeline layout path in the 3D model based on survey data; Minimally invasive grooving along the optimal path to avoid damage to the load-bearing structure; Install the water supply and drainage pipes at the slotted positions and seal the interfaces; After the new pipe is installed, the grooved position is repaired and the system acceptance is carried out.

2. A water supply and drainage system construction method according to claim 1, characterized in that: The preliminary investigation and design steps include: Acquire building structure data through lidar scanning, infrared scanning and computer tomography; Use image recognition algorithms to identify obstacles, load-bearing structures and existing pipes within buildings; A three-dimensional model including the internal structure of the building, obstacles and pipelines is established based on the acquired three-dimensional point cloud data.

3. A water supply and drainage system construction method according to claim 1, characterized in that: The step of determining the optimal layout path of the pipeline includes: The path is optimized using a multi-objective optimization algorithm, with the optimization objectives including path length, structural damage risk, and water flow resistance; In path length optimization, the total length of the pipeline segment is calculated and minimized to reduce the construction cost; In the optimization of structural damage risk, the path avoids key parts such as load-bearing walls to reduce damage to the building; In water flow resistance optimization, the resistance caused by water flow is reduced by adjusting the pipeline layout to ensure the water delivery efficiency of the water supply and drainage system.

4. A water supply and drainage system construction method according to claim 3, characterized in that: The multi-objective optimization algorithm is a genetic algorithm or a particle swarm optimization algorithm.

5. A water supply and drainage system construction method according to claim 1, characterized in that: The minimally invasive grooving step comprises: Marking the slotting positions along the determined optimal path; The finite element analysis method is used to simulate the stress distribution in the slotted area to ensure that the slotting will not damage the overall structure of the building; Use machinery to cut grooves to avoid damage to the building's load-bearing structure.

6. A water supply and drainage system construction method according to claim 5, characterized in that: The finite element analysis includes: Simulate stress distribution to ensure that stress in the slotted area does not exceed the allowable limit of the building material; The stress distribution is adjusted by controlling the groove depth and position to avoid damage to the surrounding structure during the groove process.

7. A water supply and drainage system construction method according to claim 1, characterized in that: The installation steps of the pipeline include: Use computational fluid dynamics to simulate water flow in pipes; Optimize pipe diameter and layout angle based on water flow simulation results to reduce turbulence and resistance.

8. A water supply and drainage system construction method according to claim 1, characterized in that: The sealing process step comprises: Provide sealing materials at the pipe joints; Contact stress distribution analysis ensures that the sealing pressure is sufficient to prevent water leakage.

9. A water supply and drainage system construction method according to claim 1, characterized in that: The repairing step of the grooved position includes filling the grooved position with a fast-curing epoxy resin mortar so that the grooved surface is consistent with the surrounding environment after the repair.

10. A water supply and drainage system construction method according to claim 1, characterized in that: The system acceptance steps include: Ensure the tightness of the pipeline interface through pressure testing and detect leakage; Use flow rate and flow detection instruments to measure the flow of newly installed water supply and drainage systems to ensure that they meet the design specifications.

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