A drainage pipe pre-buried construction method and system based on BIM model

Abstract

The present invention discloses a BIM-based drainage pipe pre-buried construction method and system, relating to the field of data processing technology. The method comprises the following steps: obtaining preset path and material information of the drainage pipe; obtaining a preset number of turns and a preset straight length, obtaining a first cost index, a second cost index, and a weight index, and obtaining a comprehensive cost of the drainage pipe; obtaining a first calculated number of turns and a first calculated straight length under the minimum comprehensive cost, obtaining a first output path of the drainage pipe, and obtaining multiple intersections where the drainage pipe intersects with multi-story buildings; predicting installation difficulty prediction indicators corresponding to the intersections, screening out points to be adjusted, determining an adjustment strategy based on the number of points to be adjusted, and obtaining a second output path based on the adjustment strategy; and performing pre-buried construction according to the second output path. The present invention has the advantages of cost optimization, reliable path planning, and high construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to a drainage pipe pre-buried construction method and system based on a BIM model. Background Art

[0002] In the construction of modern multi-story buildings, the rational layout and efficient installation of drainage pipe systems are crucial links. Traditional pre-buried drainage pipe construction methods often rely on two-dimensional drawings and on-site experience to plan and design pipe paths. This method has many limitations. First, two-dimensional drawings cannot intuitively display the actual layout of pipes in three-dimensional space, which leads to problems such as pipe collisions and unreasonable paths during construction, increasing rework rates and construction costs. Secondly, the lack of systematic cost assessment methods makes the decision-making process for pipe material selection and path planning relatively extensive, making it difficult to achieve optimal cost control while ensuring functionality. Furthermore, insufficient estimation of the difficulty of pipe installation often leads to difficulties in on-site construction, especially in multi-story buildings with complex structures. The intersection of pipes and building structures becomes a construction difficulty, affecting the progress and quality of the project.

[0003] With the rapid development of Building Information Modeling (BIM) technology, its application in architectural design, construction management, and other fields is becoming increasingly widespread. By creating three-dimensional digital models that contain rich geometric, attribute, and relational information, BIM technology provides accurate data support throughout the project lifecycle. However, the current specific methods for applying BIM technology to the construction of pre-buried drainage pipes are still imperfect, especially in terms of how to use BIM models for cost optimization, automatic path planning, and installation difficulty prediction. There is still a lack of systematic technical solutions.

[0004] Therefore, there is an urgent need for a pre-buried drainage pipe construction method based on the BIM model. This method can fully utilize the advantages of BIM technology to realize the intelligent planning of drainage pipe paths, comprehensively consider multiple factors such as cost, materials, and installation difficulty, and automatically generate the optimal or approximately optimal pipe layout plan, thereby improving construction efficiency, reducing errors and rework, reducing overall project costs, and ensuring the efficient operation and long-term stability of the drainage system. Summary of the Invention

[0005] In response to the defects in the prior art, the present invention provides a drainage pipe pre-buried construction method and system based on a BIM model.

[0006] A method for pre-buried construction of drainage pipes based on a BIM model comprises: constructing a three-dimensional model of a multi-story building based on the BIM model, and obtaining preset path information and material information of the drainage pipe based on the three-dimensional model; obtaining a preset number of turns and a preset straight line length based on the preset path information, obtaining a first cost index based on the preset number of turns, obtaining a second cost index based on the preset straight line length, obtaining a weight index based on the material information, and obtaining a comprehensive cost of the drainage pipe based on the first cost index, the second cost index, and the weight index; obtaining a first calculated number of turns and a first calculated straight line length under a minimum comprehensive cost, obtaining a first output path of the drainage pipe based on the first calculated number of turns and the first calculated straight line length, and obtaining multiple intersections where the drainage pipe intersects the multi-story building based on the first output path and the three-dimensional model; predicting an installation difficulty prediction index corresponding to the intersection based on a prediction model and the position of each intersection, screening out intersections corresponding to installation difficulty prediction indexes exceeding a first preset threshold as points to be adjusted, determining an adjustment strategy based on the number of points to be adjusted, and obtaining a second output path based on the adjustment strategy; and performing pre-buried construction according to the second output path.

[0007] Optionally, the comprehensive cost of the drainage pipeline is obtained based on the first cost index, the second cost index and the weight index as follows: C = W q (αT+βL); where C is the comprehensive cost, W q is the weight index, T is the preset number of turns, L is the preset straight line length, α is the turning cost coefficient, and β is the straight line cost coefficient.

[0008] Optionally, obtaining the first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost includes: obtaining the starting position and the end position of the drainage pipe; obtaining the obstacle area between the starting position and the end position; obtaining the first influence relationship between the straight line length and the number of turns based on the obstacle area; obtaining the first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost based on the first influence relationship and the comprehensive cost.

[0009] Optionally, determining the adjustment strategy based on the number of points to be adjusted includes: if the number of points to be adjusted exceeds the second preset threshold, obtaining the second influence relationship based on the first influence relationship, the prediction model and the first preset threshold, and obtaining the second calculated number of turns and the second calculated straight line length under the minimum comprehensive cost based on the second influence relationship and the comprehensive cost, and obtaining the second output path of the drainage pipe based on the second calculated number of turns and the second calculated straight line length; if the number of points to be adjusted does not exceed the second preset threshold, the first output path is used as the second output path.

[0010] Optionally, predicting the installation difficulty prediction index corresponding to the intersection based on the prediction model and the position of each intersection includes: obtaining the floor height of the intersection in a multi-story building; obtaining the diameter of the pipe to be installed at the intersection; and obtaining the installation difficulty prediction index corresponding to the intersection based on the prediction model, the floor height and the diameter of the pipe to be installed.

[0011] Optionally, the prediction model for obtaining the installation difficulty prediction index corresponding to the intersection based on the prediction model, the floor height, and the diameter of the pipe to be installed includes: di =k1l i +k2d i ; Among them, I di is the installation difficulty prediction index corresponding to the i-th intersection, l i is the floor height corresponding to the i-th intersection, d i is the diameter of the pipe to be installed at the i-th intersection, k1 is the first difficulty parameter, and k2 is the second difficulty parameter.

[0012] A drainage pipe pre-buried construction system based on the BIM model is also provided. The system includes: a construction module for constructing a three-dimensional model of a multi-story building based on the BIM model, and obtaining preset path information and material information of the drainage pipe according to the three-dimensional model; a first calculation module for obtaining a preset number of turns and a preset straight line length according to the preset path information, and obtaining a first cost index according to the preset number of turns, and obtaining a second cost index according to the preset straight line length, and obtaining a weight index according to the material information, and obtaining a comprehensive cost of the drainage pipe according to the first cost index, the second cost index and the weight index; a second calculation module for obtaining the first cost index under the minimum comprehensive cost A method for calculating the number of turns and the length of a first calculated straight line, and obtaining a first output path of the drainage pipe based on the first calculated number of turns and the first calculated straight line length, and obtaining multiple intersections where the drainage pipe intersects with the multi-story building based on the first output path and the three-dimensional model; a prediction and adjustment module, used to predict the installation difficulty prediction index corresponding to the intersection based on the prediction model and the position of each intersection, and screen out the intersections corresponding to the installation difficulty prediction index exceeding the first preset threshold as points to be adjusted, and determine the adjustment strategy according to the number of points to be adjusted, and obtain the second output path according to the adjustment strategy; a construction module, used to perform pre-buried construction according to the second output path.

[0013] Optionally, the second calculation module is also used to: obtain the starting position and the end position of the drainage pipe; obtain the obstacle area between the starting position and the end position; obtain the first influence relationship between the straight line length and the number of turns based on the obstacle area; obtain the first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost based on the first influence relationship and the comprehensive cost.

[0014] Optionally, the prediction and adjustment module is also used to: if the number of points to be adjusted exceeds a second preset threshold, obtain the second influence relationship based on the first influence relationship, the prediction model and the first preset threshold, and obtain the second calculated number of turns and the second calculated straight line length under the minimum comprehensive cost based on the second influence relationship and the comprehensive cost, and obtain the second output path of the drainage pipe based on the second calculated number of turns and the second calculated straight line length; if the number of points to be adjusted does not exceed the second preset threshold, use the first output path as the second output path.

[0015] Optionally, the prediction and adjustment module is also used to: obtain the floor height of the intersection in a multi-story building; obtain the diameter of the pipe to be installed at the intersection; and obtain an installation difficulty prediction index corresponding to the intersection based on the prediction model, floor height and diameter of the pipe to be installed.

[0016] The beneficial effects of the present invention are embodied in:

[0017] In the entire BIM-based drainage pipe pre-buried construction method, firstly, in the planning and design stage, this method uses the three-dimensional model constructed by BIM technology to achieve an intuitive display and accurate planning of the drainage pipe path, effectively avoiding the problems of pipe collision and unreasonable path brought by traditional two-dimensional drawings. This not only greatly improves the design accuracy, but also significantly reduces the rework rate during the construction process, thereby reducing construction costs; secondly, in terms of cost optimization, this method comprehensively considers multiple factors such as the number of turns, straight line length and material selection of the drainage pipe, and obtains the comprehensive cost through weighted calculation, which provides strong data support for selecting the optimal or approximately optimal pipe layout plan. This refined cost assessment method makes the selection of pipeline materials and route planning more scientific and reasonable, which not only ensures the functionality of drainage but also achieves the optimization of cost control. Furthermore, in terms of intersection identification and installation difficulty prediction, this method accurately identifies the intersections of drainage pipes and building structures through BIM models, and uses prediction models to predict the installation difficulty of these intersections, which helps construction personnel understand construction difficulties in advance and formulate targeted construction plans, thereby effectively reducing construction difficulty and risk. At the same time, for intersections with higher installation difficulty, this method can also adjust the path according to the prediction results, further optimize the pipeline layout, and improve construction efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0019] Figure 1Schematic diagram of the steps of the pre-buried construction method of drainage pipes based on the BIM model of the present invention;

[0020] Figure 2 Schematic diagram of some steps S3 in the BIM model-based drainage pipe pre-buried construction method of the present invention;

[0021] Figure 3 This is a schematic diagram of a portion of step S4 in the BIM model-based drainage pipe pre-buried construction method of the present invention;

[0022] Figure 4 This is a schematic diagram of another part of the steps in S4 of the BIM model-based drainage pipe pre-buried construction method of the present invention. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0026] like Figure 1 As shown, a drainage pipe pre-buried construction method based on the BIM model is provided, including:

[0027] S1. Build a three-dimensional model of a multi-story building based on the BIM model, and obtain the preset path information and material information of the drainage pipe according to the three-dimensional model;

[0028] S2. Obtaining a preset number of turns and a preset straight length according to the preset path information, obtaining a first cost index according to the preset number of turns, obtaining a second cost index according to the preset straight length, obtaining a weight index according to the material information, and obtaining a comprehensive cost of the drainage pipeline according to the first cost index, the second cost index, and the weight index;

[0029] S3. Obtaining a first calculated number of turns and a first calculated straight line length at a minimum comprehensive cost, obtaining a first output path of the drainage pipe based on the first calculated number of turns and the first calculated straight line length, and obtaining a plurality of intersections where the drainage pipe intersects the multi-story building based on the first output path and the three-dimensional model;

[0030] S4. Predicting installation difficulty prediction indicators corresponding to the intersections based on the prediction model and the locations of the intersections, selecting intersections corresponding to installation difficulty prediction indicators exceeding a first preset threshold as points to be adjusted, determining an adjustment strategy based on the number of points to be adjusted, and obtaining a second output path based on the adjustment strategy;

[0031] S5. Perform pre-embedding construction according to the second output path.

[0032] In this embodiment, it should be noted that in S1, BIM software (such as Revit, AutoCAD, etc.) is used to create a three-dimensional model containing detailed elements such as building structure, walls, floor slabs, doors and windows according to architectural design drawings and actual needs. This model not only contains geometric information, but also contains material attribute information (such as material, thickness, strength, etc.) and association information between elements (such as spatial position relationship, connection method, etc.). In the BIM model, according to the drainage system planning of the building design, the starting point, end point and key nodes that need to be passed along the way (such as drainage risers, drainage cross pipes, inspection ports, etc.) of the drainage pipe are determined. Finally, the path planning function of the BIM software is used to plan a reasonable preset path for the drainage pipe.

[0033] In S2, first, based on the preset path information obtained in S1, the preset number of turns and the preset straight length of the drainage pipe in three-dimensional space are accurately calculated. Then, using a preset algorithm or cost database, the number of turns is converted into a first cost indicator (considering that turns usually require more pipes and more complex installation processes, the more turns, the higher the cost), and the straight length is converted into a second cost indicator (the material consumption and installation cost of straight section pipes are relatively low). At the same time, based on the material information provided in the BIM model (such as pipe material, specifications, etc.), the corresponding weight index is obtained. This index reflects the degree of impact of different materials on the overall cost. Finally, the first cost index, the second cost index and the weight index are comprehensively considered, and the comprehensive cost of the drainage pipe is obtained through weighted calculation. This process not only takes into account the impact of pipeline layout on cost, but also takes into account the important contribution of material selection to cost, so that the economic feasibility of different drainage pipe layout schemes can be more comprehensively evaluated, providing strong data support for the subsequent selection of the optimal or near-optimal layout scheme.

[0034] In S3, it is the path optimization and intersection identification link in the pre-buried construction method of drainage pipes based on the BIM model. Specifically, first, based on the comprehensive cost calculated in S2, find and determine the drainage pipe layout plan corresponding to the minimum comprehensive cost. The plan includes a specific number of turns and straight line length, that is, the first calculated number of turns and the first calculated straight line length. Then, using these optimized parameters, the first output path of the drainage pipe is automatically generated in the BIM model. This path not only meets the functional requirements of drainage in three-dimensional space, but also achieves cost optimization. Then, the spatial relationship between this optimized path and the three-dimensional model of the multi-story building is further analyzed, and through precise geometric calculations, all intersections where the drainage pipes intersect with the building structure (such as walls, floor slabs, etc.) are identified and located. These intersections are difficult points in subsequent construction, involving complex operations such as the crossing, connection or fixing of pipes. For example, water stop joints and brackets will be installed at these intersections.

[0035] S4 involves the installation difficulty prediction and route adjustment phase of the BIM-based pre-buried drainage pipe construction method. Specifically, a pre-established prediction model, incorporating machine learning algorithms, historical construction data, and expert experience, analyzes the location information of each intersection identified in S3 and predicts an installation difficulty prediction index for each intersection. This index takes into account the spatial location of the intersection and the size of the drainage pipe to be installed. Next, a first preset threshold is set to filter intersections with high installation difficulty. Intersections whose installation difficulty prediction index exceeds this threshold are marked as locations requiring adjustment. Based on the number of these locations, an adjustment strategy is determined. For example, when there are too many locations requiring adjustment, a global optimization adjustment strategy is adopted. This strategy comprehensively considers the location, installation difficulty, and interactions of all locations requiring adjustment, and then replans the drainage pipe route. Alternatively, when there are only a few locations requiring adjustment, a laissez-faire adjustment strategy is adopted to maintain the overall stability and economy of the drainage pipe route and conserve algorithm resources. Through S4, not only cost optimization is taken into consideration, but also the feasibility and convenience in actual construction are fully considered, especially those intersections with higher installation difficulty are optimized, thereby effectively reducing the construction difficulty and risk and improving construction efficiency and quality.

[0036] In S5, the previous steps (S1 to S4) have completed intelligent drainage pipe routing, cost optimization, intersection identification, installation difficulty prediction, and necessary adjustments, ultimately generating a second output path. This path meets drainage functional requirements in three-dimensional space while optimizing costs. It also fully considers feasibility and convenience in actual construction, particularly optimizing intersections that present significant installation challenges. In S5, construction personnel will conduct the actual pre-embedded construction based on this second output path. They will cut, assemble, secure, and connect the pipes based on the detailed geometric, attribute, and contextual information provided in the BIM model, such as pipe location, size, material, and connection method. Furthermore, construction personnel will refer to the intersection locations and optimized treatment plans noted in the BIM model and implement appropriate construction techniques and measures, such as installing water stops and brackets, to ensure that the pipes are secure and sealed as they pass through the building structure without compromising the integrity and safety of the structure.

[0037] In summary, in the entire drainage pipe pre-buried construction method based on the BIM model, firstly, in the planning and design stage, this method realizes the intuitive display and precise planning of the drainage pipe path through the three-dimensional model constructed by BIM technology, effectively avoiding the problems of pipe collision and unreasonable path brought by traditional two-dimensional drawings. This not only greatly improves the design accuracy, but also significantly reduces the rework rate during the construction process, thereby reducing construction costs; secondly, in terms of cost optimization, this method comprehensively considers multiple factors such as the number of turns, straight line length and material selection of the drainage pipe, and obtains the comprehensive cost through weighted calculation, which provides powerful data for selecting the optimal or approximately optimal pipe layout plan. It is supported that this refined cost assessment method makes the selection of pipeline materials and route planning more scientific and reasonable, which not only ensures the functionality of drainage but also achieves the optimization of cost control; furthermore, in terms of intersection identification and installation difficulty prediction, this method accurately identifies the intersections of drainage pipes and building structures through BIM models, and uses prediction models to predict the installation difficulty of these intersections, which helps construction personnel understand the construction difficulties in advance and formulate targeted construction plans, thereby effectively reducing construction difficulty and risks. At the same time, for intersections with higher installation difficulty, this method can also adjust the path according to the prediction results, further optimize the pipeline layout, and improve construction efficiency and quality.

[0038] In one embodiment, the comprehensive cost of the drainage pipe obtained in S2 according to the first cost index, the second cost index and the weight index is expressed as:

[0039] C=W q (αT+βL); where

[0040] C is the comprehensive cost, Wq is the weight index, T is the preset number of turns, L is the preset straight line length, α is the turning cost coefficient, and β is the straight line cost coefficient.

[0041] In this embodiment, it should be noted that C represents the comprehensive cost of the drainage pipe, which is the ultimate goal to be optimized. q It is a weight index, which reflects the degree of influence of different materials or specifications on the overall cost. This weight is determined based on the material information provided in the BIM model (such as pipe material, specifications, etc.), which reflects the important position of material cost in the comprehensive cost. T represents the preset number of turns, which is an important parameter in the layout of drainage pipes. The more turns, the more pipes and more complex installation processes are required, so the cost will increase accordingly. L represents the preset straight length, that is, the length of the straight section in the drainage pipe. The material consumption and installation cost of the straight section pipe are relatively low. At the same time, the straight length is also an important factor affecting the comprehensive cost. α is the turn cost coefficient, which is used to convert the number of turns into the first cost index. This coefficient can be determined based on actual construction experience or cost database, reflecting the specific impact of the number of turns on cost. β is the straight line cost coefficient, which is used to convert the straight line length into the second cost index. Similarly, this coefficient is also determined based on actual construction experience or cost database, reflecting the degree of influence of the straight line length on cost.

[0042] like Figure 2 As shown, in one embodiment, obtaining the first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost in S3 includes:

[0043] S31, obtaining the starting point and end point of the drainage pipe;

[0044] S32, obtaining the obstacle area between the starting position and the end position;

[0045] S33. Obtaining a first influencing relationship between straight line length and number of turns based on the obstacle area;

[0046] S34. Obtain a first calculated number of turns and a first calculated straight line length at a minimum comprehensive cost according to the first influence relationship and the comprehensive cost.

[0047] In this embodiment, it should be noted that, in S31, obtaining the starting and ending positions of the drainage pipe is the primary task of drainage pipe path planning based on the BIM model. The starting position usually refers to the source of drainage, such as the drain outlet of the bathroom, the sink in the kitchen, etc., while the ending position is the location where the drainage is finally discharged, such as the sewer, septic tank, etc. In the BIM model, these location information are accurately determined based on the architectural design drawings and actual needs, with three-dimensional coordinates and detailed attribute information. By obtaining the starting and ending positions, the general direction and layout range of the drainage pipe can be clarified, providing basic data for subsequent path planning and optimization.

[0048] In S32, obtaining the obstacle area between the starting position and the end position is a key link in drainage pipe path planning. The obstacle area mainly includes building structures (such as walls, floor slabs, columns, etc.), other pipelines (such as wires, cables, water pipes, etc.) and other factors that may hinder the layout of drainage pipes. In the BIM model, these obstacles exist in the form of three-dimensional entities with precise geometric information and attribute information. Through spatial analysis algorithms, the obstacle area between the starting point and the end point can be automatically identified and extracted, providing key information for subsequent path obstacle avoidance and optimization. The completion of this step can ensure that the drainage pipe avoids collisions with obstacles during the layout process and ensure the rationality and feasibility of the path.

[0049] In S33, obtaining the first influence relationship between the straight length and the number of turns based on the obstacle area is the core issue in the optimization of the drainage pipe path. Due to the existence of the obstacle area, the drainage pipe often needs to bypass these areas during the layout process, resulting in turns and an increase in the length of the pipe. Through actual analysis of specific obstacle areas, it is possible to analyze the relationship between the obstacle area and the straight length and number of turns of the drainage pipe, that is, the first influence relationship. Generally speaking, the more obstacle areas there are, the more turns there are. When the obstacle area reaches a certain value, the drainage pipe will be detoured, which will also affect the straight length of the drainage pipe. The first influence relationship reflects the trade-off between the straight length and the number of turns that the drainage pipe needs to increase in order to avoid obstacles in a given obstacle area.

[0050] In S34, the ultimate goal of drainage pipe path optimization is to determine the first calculated number of turns and first calculated straight-line length for the minimum comprehensive cost based on the first impact relationship and the comprehensive cost. While satisfying drainage function requirements and obstacle avoidance requirements, the drainage pipe path parameters (number of turns and straight-line length) are continuously iterated and adjusted to find and determine the drainage pipe layout solution that corresponds to the minimum comprehensive cost. The number of turns and straight-line length in this solution are the first calculated number of turns and first calculated straight-line length, representing the optimal drainage pipe layout solution under the current conditions.

[0051] like Figure 3 As shown, in one embodiment, determining the adjustment strategy according to the number of points to be adjusted in S4 includes:

[0052] S44. If the number of points to be adjusted exceeds a second preset threshold, obtaining a second influence relationship based on the first influence relationship, the prediction model, and the first preset threshold, obtaining a second calculated number of turns and a second calculated straight line length at a minimum comprehensive cost based on the second influence relationship and the comprehensive cost, and obtaining a second output path of the drainage pipe based on the second calculated number of turns and the second calculated straight line length;

[0053] S45: If the number of points to be adjusted does not exceed a second preset threshold, the first output path is used as the second output path.

[0054] In this embodiment, it should be noted that in S44, if the number of points to be adjusted exceeds the second preset threshold, it indicates that in the current drainage pipe layout plan, there are many intersections whose installation difficulty prediction index exceeds the first preset threshold, that is, there are too many intersections with high installation difficulty. In order to reduce the construction difficulty and construction cost, the constraint of the installation difficulty prediction index will be added to the first influence relationship again, and the constraint of the installation difficulty prediction index is obtained through the prediction model and the first preset threshold, so as to obtain the second influence relationship. On this basis, through algorithm iteration, a new drainage pipe layout plan that can minimize the comprehensive cost (including material cost, construction difficulty cost, etc.) while meeting the drainage function requirements and obstacle avoidance requirements is found. The number of turns and the straight line length in this plan are the second calculated number of turns and the second calculated straight line length. They represent the optimal drainage pipe layout plan after deep optimization under the current conditions. Finally, based on these parameters, the second output path of the drainage pipe will be generated in the BIM model.

[0055] In S45, if the number of points to be adjusted does not exceed the second preset threshold, this indicates that in the current drainage pipe layout, only a few intersections have predicted installation difficulty indicators exceeding the first preset threshold, indicating that the overall construction difficulty and risk are relatively low. In this case, it is deemed unnecessary to make large-scale adjustments to the entire drainage pipe layout, as such adjustments may incur additional costs and time.

[0056] like Figure 4 As shown, in one embodiment, the prediction of the installation difficulty prediction index corresponding to the intersection based on the prediction model and the position of each intersection in S4 includes:

[0057] S41. Obtaining the floor height of the intersection in the multi-story building;

[0058] S42, obtaining the diameter of the pipe to be installed at the intersection;

[0059] S43. Obtain an installation difficulty prediction index corresponding to the intersection based on the prediction model, the floor height, and the diameter of the pipe to be installed.

[0060] In this embodiment, it should be noted that, in S41, the floor height of the intersection in a multi-story building is one of the important indicators for predicting the difficulty of installing the intersection. In a multi-story building, the floor heights of different floors may be different, and the floor height of the intersection will directly affect the difficulty of the construction operation. For example, if the intersection is located on a higher floor, construction workers may need to use aerial work equipment or build scaffolding to reach it, which will increase the complexity and risk of construction. At the same time, environmental factors such as wind and temperature in high floors may also affect construction, further increasing the difficulty of installation. Therefore, in step S41, the specific floor height information of each intersection in the multi-story building will be accurately obtained to provide accurate spatial location data for subsequent predictions of installation difficulty.

[0061] In S42, obtaining the diameter of the pipe to be installed at the intersection is also an important parameter for predicting the difficulty of installation. The size of the pipe diameter directly determines the physical size and weight of the pipeline, which in turn affects operations such as transportation, assembly, and fixing during the construction process. Generally speaking, the larger the pipe diameter, the heavier and larger the pipe, and the more difficult the operation during the construction process. Especially at the intersection, large-diameter pipes may require more space for installation and adjustment, and the connection with other pipelines will be more complicated. Therefore, in step S42, the diameter of the pipe to be installed at each intersection will be recorded in detail so that the subsequent prediction model can accurately assess the installation difficulty of the location.

[0062] In S43, the floor height information obtained in S41 and the pipe diameter information to be installed obtained in S42 are input into the prediction model. The prediction model calculates based on this information and ultimately outputs a prediction index of installation difficulty corresponding to each intersection.

[0063] In one embodiment, the prediction model in S43 for obtaining the installation difficulty prediction index corresponding to the intersection based on the prediction model, the floor height, and the diameter of the pipe to be installed includes:

[0064] I di =k1l i +k2d i ;in,

[0065] I di is the installation difficulty prediction index corresponding to the i-th intersection, l i is the floor height corresponding to the i-th intersection, d iis the diameter of the pipe to be installed at the i-th intersection, k1 is the first difficulty parameter, and k2 is the second difficulty parameter.

[0066] In this embodiment, it should be noted that I di It represents the installation difficulty prediction index of the i-th intersection. The higher this index is, the more difficult it is to install the pipeline at this intersection. i Indicates the floor height corresponding to the i-th intersection. Floor height refers to the vertical distance from the ground to the ceiling or the upper floor. Generally speaking, the higher the floor height, the larger the working space required for pipe installation, and the greater the installation difficulty. i represents the diameter of the pipe to be installed at the i-th intersection. A larger diameter generally means greater weight and volume, requiring more space and increasing the difficulty of installation. k1 and k2, respectively, are the first and second difficulty parameters. They are weight coefficients in the model used to adjust the impact of floor height and pipe diameter on the installation difficulty prediction index. These parameters can be determined through practical experience, historical data, or expert evaluation.

[0067] A drainage pipe pre-buried construction system based on a BIM model is also provided, the system comprising:

[0068] A construction module is used to construct a three-dimensional model of a multi-story building based on the BIM model, and obtain preset path information and material information of the drainage pipe according to the three-dimensional model;

[0069] a first calculation module, configured to obtain a preset number of turns and a preset straight line length according to the preset path information, obtain a first cost index according to the preset number of turns, obtain a second cost index according to the preset straight line length, obtain a weight index according to the material information, and obtain a comprehensive cost of the drainage pipe according to the first cost index, the second cost index, and the weight index;

[0070] a second calculation module, configured to obtain a first calculated number of turns and a first calculated straight line length at a minimum comprehensive cost, obtain a first output path of the drainage pipe based on the first calculated number of turns and the first calculated straight line length, and obtain a plurality of intersection points where the drainage pipe intersects the multi-story building based on the first output path and the three-dimensional model;

[0071] a prediction and adjustment module, configured to predict, based on the prediction model and the positions of the intersections, an installation difficulty prediction index corresponding to the intersections, select intersections corresponding to installation difficulty prediction indexes exceeding a first preset threshold as points to be adjusted, determine an adjustment strategy based on the number of points to be adjusted, and obtain a second output path based on the adjustment strategy;

[0072] The construction module is used to perform pre-embedded construction according to the second output path.

[0073] In one embodiment, the second calculation module is also used to: obtain the starting position and the end position of the drainage pipe; obtain the obstacle area between the starting position and the end position; obtain the first influence relationship between the straight line length and the number of turns based on the obstacle area; obtain the first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost based on the first influence relationship and the comprehensive cost.

[0074] In one embodiment, the prediction and adjustment module is also used to: if the number of points to be adjusted exceeds the second preset threshold, obtain the second influence relationship based on the first influence relationship, the prediction model and the first preset threshold, and obtain the second calculated number of turns and the second calculated straight line length under the minimum comprehensive cost based on the second influence relationship and the comprehensive cost, and obtain the second output path of the drainage pipe based on the second calculated number of turns and the second calculated straight line length; if the number of points to be adjusted does not exceed the second preset threshold, use the first output path as the second output path.

[0075] In one embodiment, the prediction and adjustment module is also used to: obtain the floor height of the intersection in a multi-story building; obtain the diameter of the pipe to be installed at the intersection; and obtain the installation difficulty prediction index corresponding to the intersection based on the prediction model, floor height and diameter of the pipe to be installed.

[0076] In this embodiment, it should be noted that, regarding the above-mentioned BIM model-based pre-buried drainage pipe construction system, the specific method of performing operations has been described in detail in the implementation method of the BIM model-based pre-buried drainage pipe construction method, and will not be elaborated here.

[0077] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0078] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0079] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

[0080] Finally, 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A drainage pipe pre-buried construction method based on BIM model, characterized in that: include: Build a 3D model of a multi-story building based on the BIM model, and obtain the preset path information and material information of the drainage pipes based on the 3D model; Obtaining a preset number of turns and a preset straight length according to the preset path information, obtaining a first cost index according to the preset number of turns, obtaining a second cost index according to the preset straight length, obtaining a weight index according to the material information, and obtaining a comprehensive cost of the drainage pipeline according to the first cost index, the second cost index, and the weight index; Obtaining a first calculated number of turns and a first calculated straight line length under a minimum comprehensive cost, obtaining a first output path of the drainage pipe based on the first calculated number of turns and the first calculated straight line length, and obtaining a plurality of intersections where the drainage pipe intersects the multi-story building based on the first output path and the three-dimensional model; Predicting installation difficulty prediction indicators corresponding to the intersections based on the prediction model and the positions of the intersections, selecting intersections corresponding to installation difficulty prediction indicators exceeding a first preset threshold as points to be adjusted, determining an adjustment strategy based on the number of points to be adjusted, and obtaining a second output path based on the adjustment strategy; The method of predicting the installation difficulty prediction index corresponding to each intersection based on the prediction model and the location of each intersection includes: obtaining the floor height of the intersection in a multi-story building; obtaining the diameter of the pipe to be installed at the intersection; and obtaining the installation difficulty prediction index corresponding to the intersection based on the prediction model, the floor height, and the diameter of the pipe to be installed. Carry out pre-embedded construction according to the second output path.

2. The BIM model-based drainage pipe pre-buried construction method according to claim 1 is characterized in that: The comprehensive cost of the drainage pipeline obtained according to the first cost index, the second cost index and the weight index is expressed as: ;in, For comprehensive cost, is the weight index, To preset the number of turns, is the preset straight line length, is the turning cost coefficient, is the straight-line cost coefficient.

3. The BIM model-based drainage pipe pre-buried construction method according to claim 2 is characterized in that: The obtaining of the first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost includes: Get the starting point and end point of the drainage pipe; Get the obstacle area between the starting position and the end position; Obtaining the first influencing relationship between the straight line length and the number of turns based on the obstacle area; The first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost are obtained according to the first influence relationship and the comprehensive cost.

4. The BIM model-based drainage pipe pre-buried construction method according to claim 3 is characterized in that: Determining the adjustment strategy according to the number of points to be adjusted includes: If the number of points to be adjusted exceeds a second preset threshold, a second influence relationship is obtained based on the first influence relationship, the prediction model, and the first preset threshold, and a second calculated number of turns and a second calculated straight line length under the minimum comprehensive cost are obtained based on the second influence relationship and the comprehensive cost, and a second output path of the drainage pipe is obtained based on the second calculated number of turns and the second calculated straight line length; If the number of points to be adjusted does not exceed a second preset threshold, the first output path is used as the second output path.

5. The BIM model-based drainage pipe pre-buried construction method according to claim 1 is characterized in that: The prediction model for obtaining the installation difficulty prediction index corresponding to the intersection based on the prediction model, the floor height, and the diameter of the pipe to be installed includes: ;in, is the installation difficulty prediction index corresponding to the i-th intersection, is the floor height corresponding to the i-th intersection, is the diameter of the pipe to be installed at the i-th intersection, is the first difficulty parameter, is the second difficulty parameter.

6. A drainage pipe pre-buried construction system based on BIM model, characterized in that: The system comprises: A construction module is used to construct a three-dimensional model of a multi-story building based on the BIM model, and obtain preset path information and material information of the drainage pipe according to the three-dimensional model; a first calculation module, configured to obtain a preset number of turns and a preset straight line length according to the preset path information, obtain a first cost index according to the preset number of turns, obtain a second cost index according to the preset straight line length, obtain a weight index according to the material information, and obtain a comprehensive cost of the drainage pipe according to the first cost index, the second cost index, and the weight index; a second calculation module, configured to obtain a first calculated number of turns and a first calculated straight line length at a minimum comprehensive cost, obtain a first output path of the drainage pipe based on the first calculated number of turns and the first calculated straight line length, and obtain a plurality of intersection points where the drainage pipe intersects the multi-story building based on the first output path and the three-dimensional model; a prediction and adjustment module, configured to predict, based on the prediction model and the positions of the intersections, an installation difficulty prediction index corresponding to the intersections, select intersections corresponding to installation difficulty prediction indexes exceeding a first preset threshold as points to be adjusted, determine an adjustment strategy based on the number of points to be adjusted, and obtain a second output path based on the adjustment strategy; The prediction and adjustment module is further used to: obtain the floor height of the intersection in a multi-story building; obtain the diameter of the pipe to be installed at the intersection; and obtain the installation difficulty prediction index corresponding to the intersection based on the prediction model, the floor height, and the diameter of the pipe to be installed; The construction module is used to perform pre-embedded construction according to the second output path.

7. The BIM model-based drainage pipe pre-buried construction system according to claim 6 is characterized in that: The second calculation module is further configured to: Get the starting point and end point of the drainage pipe; Get the obstacle area between the starting position and the end position; Obtaining the first influencing relationship between the straight line length and the number of turns based on the obstacle area; The first calculated number of turns and the first calculated straight line length under the minimum comprehensive cost are obtained according to the first influence relationship and the comprehensive cost.

8. The BIM model-based drainage pipe pre-buried construction system according to claim 7 is characterized in that: The prediction and adjustment module is also used for: If the number of points to be adjusted exceeds a second preset threshold, a second influence relationship is obtained based on the first influence relationship, the prediction model, and the first preset threshold, and a second calculated number of turns and a second calculated straight line length under the minimum comprehensive cost are obtained based on the second influence relationship and the comprehensive cost, and a second output path of the drainage pipe is obtained based on the second calculated number of turns and the second calculated straight line length; If the number of points to be adjusted does not exceed a second preset threshold, the first output path is used as the second output path.

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