Drainage pipeline pre-embedding construction method and system based on BIM model

Abstract

The invention discloses a drainage pipeline pre-embedding construction method and system based on a BIM model, and relates to the technical field of data processing, and the method comprises the steps: obtaining preset path information and material information of a drainage pipeline; obtaining a preset turning frequency and a preset straight line length, obtaining a first cost index, a second cost index and a weight index, and obtaining the comprehensive cost of the drainage pipeline; obtaining a first calculation turning frequency and a first calculation straight line length under the minimum comprehensive cost, obtaining a first output path of the drainage pipeline, and obtaining a plurality of intersection points of the drainage pipeline and the multi-story building; predicting an installation difficulty prediction index corresponding to the intersection, screening out to-be-adjusted point locations, determining an adjustment strategy according to the number of the to-be-adjusted point locations, and obtaining a second output path according to the adjustment strategy; and pre-burying construction is conducted according to the second output path. The method 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 process of modern multi-story buildings, the reasonable layout and efficient installation of the drainage pipe system is one of the most important links. The traditional method of pre-buried drainage pipe construction often relies on two-dimensional drawings and on-site experience to plan and design the pipe path, which has many limitations. First, it is difficult for two-dimensional drawings to intuitively show the actual layout of the pipe in three-dimensional space, which leads to problems such as pipe collision and unreasonable path during construction, increasing the rework rate and construction cost. Secondly, the lack of systematic cost evaluation means makes the decision-making process such as pipe material selection and path planning relatively extensive, making it difficult to achieve cost control optimization while ensuring functionality. Furthermore, the 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 processing 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 more and more extensive. BIM technology provides accurate data support for the entire life cycle of the project by creating a three-dimensional digital model containing rich geometric information, attribute information and related information. However, the specific methods of applying BIM technology to the pre-buried construction of 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 make full use of the advantages of BIM technology, realize the intelligent planning of drainage pipe paths, comprehensively consider factors such as cost, materials, and installation difficulty, and automatically generate optimal or near-optimal pipe layout plans, 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 view of the defects in the prior art, the present invention provides a drainage pipe pre-buried construction method and system based on the 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 according to the three-dimensional model; 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; obtaining a first calculated number of turns and a first calculated straight line length under a minimum comprehensive cost, and obtaining a first output path of the drainage pipe according to the first calculated number of turns and the first calculated straight line length, and obtaining a plurality of intersections where the drainage pipe intersects with the multi-story building according to 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, and selecting intersections corresponding to the installation difficulty prediction index exceeding a first preset threshold as points to be adjusted, and determining an adjustment strategy according to the number of points to be adjusted, and obtaining a second output path according to 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 according to 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 point and the end point of the drainage pipe; obtaining the obstacle area between the starting point and the end point; 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 layer 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, which 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, which is used to obtain a preset number of turns and a preset straight line length according to the preset path information, and obtain a first cost index according to the preset number of turns, and obtain a second cost index according to the preset straight line length, and obtain a weight index according to the material information, and obtain the comprehensive cost of the drainage pipe according to the first cost index, the second cost index and the weight index; a second calculation module, which is used to obtain the first cost index under the minimum comprehensive cost. A calculation module is provided for calculating the number of turns and the first calculated straight line length, and obtaining a first output path of the drainage pipe according to 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 according to the first output path and the three-dimensional model; a prediction and adjustment module is 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 the points to be adjusted, and determine the adjustment strategy according to the number of the points to be adjusted, and obtain the second output path according to the adjustment strategy; a construction module is 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 point and end point of the drainage pipe; obtain the obstacle area between the starting point and end point; 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 for: 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, and obtaining a second calculated number of turns and a second calculated straight line length under the 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; if the number of points to be adjusted does not exceed the second preset threshold, using 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, the floor height and the 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 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 caused 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 the construction cost; 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 path 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 the BIM model, and uses the prediction model 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 the 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] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0019] Figure 1It is a schematic diagram of the steps of the pre-buried construction method of the drainage pipe based on the BIM model of the present invention;

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

[0021] Figure 3 It is a schematic diagram of a part of the steps of S4 in the pre-buried construction method of drainage pipes based on the BIM model of the present invention;

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

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 here 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 claimed for protection, but merely represents selected embodiments of the present invention. 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.

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

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

[0027] S1. Build 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;

[0028] S2. Obtaining a preset number of turns and a preset straight line 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 line length, 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;

[0029] S3, obtaining a first calculated number of turns and a first calculated straight line length under a minimum comprehensive cost, and obtaining a first output path of the drainage pipe according to 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 according to the first output path and the three-dimensional model;

[0030] S4, predicting the installation difficulty prediction index corresponding to the intersection based on the prediction model and the position of each intersection, and selecting the intersection corresponding to the installation difficulty prediction index exceeding the first preset threshold as the point to be adjusted, and determining the adjustment strategy according to the number of the points to be adjusted, and obtaining the second output path according to 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 architectural design, determine 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.). Finally, use the path planning function of the BIM software to plan a reasonable preset path for the drainage pipe.

[0033] In S2, first, according to 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 the preset algorithm or cost database, the number of turns is converted into the first cost index (considering that more pipes and more complex installation processes are usually required at the turns, the more turns, the higher the cost), and the straight length is converted into the second cost index (the material consumption and installation cost of the straight section pipe are relatively low). At the same time, according to the material information provided in the BIM model (such as pipe material, specifications, etc.), the corresponding weight index is obtained, which reflects the degree of influence 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 pipeline layout schemes can be more comprehensively evaluated, and strong data support is provided for the subsequent selection of the optimal or approximately 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, according to 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 optimizes the cost. Then, the spatial relationship between this optimized path and the three-dimensional model of the multi-story building is further analyzed, and all intersections where the drainage pipes intersect with the building structure (such as walls, floor slabs, etc.) are identified and located through precise geometric calculations. These intersections are difficult points in subsequent construction, involving complex operations such as the crossing, connection or fixing of pipes, such as the installation of water stop joints and brackets at these intersections.

[0035] In S4, it is the installation difficulty prediction and path adjustment link in the pre-buried construction method of drainage pipes based on the BIM model. Specifically, first, the pre-established prediction model is used, which integrates machine learning algorithms, historical construction data and expert experience, to analyze the location information of each intersection identified in S3, and predict the installation difficulty prediction index corresponding to each intersection. This index comprehensively considers the spatial position of the intersection and the size of the drainage pipe to be installed. Next, a first preset threshold is set to screen intersections with higher installation difficulty, that is, those intersections whose installation difficulty prediction index exceeds the threshold are marked as points to be adjusted. According to the number of these points to be adjusted, an adjustment strategy is determined. For example, when there are too many points to be adjusted, a global optimization adjustment strategy will be adopted. Under this strategy, the location, installation difficulty and mutual influence of all points to be adjusted will be comprehensively considered, and then the path of the drainage pipe will be replanned. For example, when there are few points to be adjusted, a laissez-faire adjustment strategy will be adopted to maintain the overall stability and economy of the drainage pipe path and save 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 intelligent planning, cost optimization, intersection identification and installation difficulty prediction of the drainage pipe path, as well as the necessary adjustment of the path have been completed through the previous steps (S1 to S4), and finally the second output path is generated. This path not only meets the functional requirements of drainage in three-dimensional space, but also optimizes the cost, while fully considering the feasibility and convenience in actual construction, especially optimizing the intersections with high installation difficulty. In S5, the construction personnel will carry out the actual pre-embedded construction based on this second output path. They will cut, assemble, fix and connect the pipes according to the detailed geometric information, attribute information and related information provided in the BIM model, such as the location, size, material, connection method, etc. of the pipes. At the same time, the construction personnel will also refer to the intersection location marked in the BIM model and the optimized treatment plan, and take appropriate construction processes and measures, such as installing water stop joints and brackets, to ensure that the pipes can be stable and sealed when passing through the building structure without affecting the integrity and safety of the building structure.

[0037] In summary, in the entire BIM-based drainage pipe pre-buried construction method, 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, which not only greatly improves the design accuracy, but also significantly reduces the rework rate during the construction process, thereby reducing the construction cost; 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 the BIM model, and uses the prediction model 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 the 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.

[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, W isq 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 turning 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 an obstacle area between the starting position and the end position;

[0045] S33, obtaining a first influence relationship between the straight line length and the number of turns according to the obstacle area;

[0046] S34. Obtain a first calculated number of turns and a first calculated straight line length under 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 point and end point of the drainage pipe is the primary task of drainage pipe path planning based on the BIM model. The starting point usually refers to the source of drainage, such as the drain in the bathroom, the sink in the kitchen, etc., while the end point 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 according to the architectural design drawings and actual needs, with three-dimensional coordinates and detailed attribute information. By obtaining the starting point and end point 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 the 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 the drainage pipe. In the BIM model, these obstacles exist in the form of three-dimensional entities with precise geometric information and attribute information. Through the spatial analysis algorithm, 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 collision with obstacles during the layout process and ensure the rationality and feasibility of the path.

[0049] In S33, obtaining the first influencing relationship between the straight length and the number of turns according to 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, the relationship between the obstacle area and the straight length and number of turns of the drainage pipe, that is, the first influencing relationship, can be analyzed. 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 influencing relationship reflects the trade-offs and choices 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 obtain the first calculated number of turns and the first calculated straight length under the minimum comprehensive cost according to the first influence relationship and the comprehensive cost. On the premise of meeting the drainage function requirements and obstacle avoidance requirements, the path parameters (number of turns and straight length) of the drainage pipe are continuously iterated and adjusted to find and determine the drainage pipe layout plan corresponding to the minimum comprehensive cost. The number of turns and straight length in this plan are the first calculated number of turns and the first calculated straight length, which represent the optimal drainage pipe layout plan 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 the second preset threshold, a second influence relationship is obtained according to 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 according to 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 pipeline layout plan, there are more 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 pipeline layout plan that can minimize the comprehensive cost (including material cost, construction difficulty cost, etc.) is found under the premise of meeting the drainage function requirements and obstacle avoidance requirements. 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, which represent the optimal drainage pipeline layout plan after deep optimization under the current conditions. Finally, according to these parameters, the second output path of the drainage pipeline 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, it means that in the current drainage pipeline layout plan, only a few intersections have installation difficulty prediction indicators that exceed the first preset threshold, that is, the overall construction difficulty and risk are relatively low. In this case, it is considered unnecessary to make large-scale adjustments to the entire drainage pipeline layout, because such adjustments may bring additional costs and time consumption.

[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-rise buildings may also affect the 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 position data for subsequent installation difficulty predictions.

[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 the handling, assembly and fixing operations during the construction process. Generally speaking, the larger the pipe diameter, the greater the weight and volume of the pipeline, and the difficulty of operation during the construction process increases accordingly. Especially at the intersection position, 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 diameter information of the pipe to be installed obtained in S42 are input into the prediction model. The prediction model will perform calculations based on this information and eventually output the installation difficulty prediction index 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 layer 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. The 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 installing the pipeline, and the possible installation difficulty increases accordingly. i Represents the diameter of the pipe to be installed at the i-th intersection. The larger the diameter, the larger the weight and volume of the pipe, and the more space and difficulty of operation required for installation. k1 and k2 are the first difficulty parameter and the second difficulty parameter, respectively. They are weight coefficients in the model and are used to adjust the influence of floor height and pipe diameter on the installation difficulty prediction index. These parameters can be determined through actual 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, used for obtaining a preset number of turns and a preset straight line length according to 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 line length, obtaining a weight index according to 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;

[0070] a second calculation module, for obtaining a first calculated number of turns and a first calculated straight line length under a minimum comprehensive cost, and obtaining a first output path of the drainage pipe according to 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 according to the first output path and the stereoscopic model;

[0071] 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 select the intersection corresponding to the installation difficulty prediction index exceeding the first preset threshold as the point to be adjusted, and determine the adjustment strategy according to the number of the points to be adjusted, and obtain the second output path according to the adjustment strategy;

[0072] A 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 point and end point of the drainage pipe; obtain the obstacle area between the starting point and end point; 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 for: 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 according to 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.

[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-based drainage pipe pre-buried construction system, the specific method of performing operations has been described in detail in the implementation method of the BIM-based drainage pipe pre-buried 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 in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope 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. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0079] In addition, 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 specification of the present invention.

Claims

1. A drainage pipe pre-buried construction method based on BIM model, characterized in that: include: 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; 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 pipe 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, and obtaining a first output path of the drainage pipe according to 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 according to the first output path and the stereoscopic model; Predicting the installation difficulty prediction index corresponding to the intersection based on the prediction model and the position of each intersection, and selecting the intersection corresponding to the installation difficulty prediction index exceeding the first preset threshold as the point to be adjusted, and determining the adjustment strategy according to the number of the points to be adjusted, and obtaining the second output path according to the adjustment strategy; 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 pipe obtained according to the first cost index, the second cost index and the weight index is expressed as: C=W q (αT+βL); where C is the comprehensive cost, W is 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.

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 comprises: 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 according to 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 the second preset threshold, the second influence relationship is obtained according to the first influence relationship, the prediction model and the first preset threshold, and the second calculated number of turns and the second calculated straight line length under the minimum comprehensive cost are obtained based on the second influence relationship and the comprehensive cost, and the second output path of the drainage pipe is obtained according to 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.

5. The BIM model-based drainage pipe pre-buried construction method according to claim 4 is characterized in that: The prediction of the installation difficulty prediction index corresponding to the intersection based on the prediction model and the position of each intersection includes: Get the floor height of the intersection in a multi-story building; Get the diameter of the pipe to be installed at the intersection; The installation difficulty prediction index corresponding to the intersection is obtained based on the prediction model, floor height and the diameter of the pipe to be installed.

6. The BIM model-based drainage pipe pre-buried construction method according to claim 5 is characterized in that: The prediction model for obtaining the installation difficulty prediction index corresponding to the intersection based on the prediction model, the layer height and the diameter of the pipe to be installed includes: I di =k1l i +k2d i ;in, 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.

7. 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, used for obtaining a preset number of turns and a preset straight line length according to 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 line length, obtaining a weight index according to 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 a first calculated number of turns and a first calculated straight line length under a minimum comprehensive cost, and obtaining a first output path of the drainage pipe according to 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 according to the first output path and the stereoscopic 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 select the intersection corresponding to the installation difficulty prediction index exceeding the first preset threshold as the point to be adjusted, and determine the adjustment strategy according to the number of the points to be adjusted, and obtain the second output path according to the adjustment strategy; A construction module is used to perform pre-embedded construction according to the second output path.

8. The BIM model-based drainage pipe pre-buried construction system according to claim 7 is characterized in that: The second calculation module is also used for: 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 according to 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.

9. The BIM model-based drainage pipe pre-buried construction system according to claim 8 is characterized in that: The prediction and adjustment module is also used for: If the number of points to be adjusted exceeds the second preset threshold, the second influence relationship is obtained according to the first influence relationship, the prediction model and the first preset threshold, and the second calculated number of turns and the second calculated straight line length under the minimum comprehensive cost are obtained based on the second influence relationship and the comprehensive cost, and the second output path of the drainage pipe is obtained according to 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.

10. The BIM model-based drainage pipe pre-buried construction system according to claim 9 is characterized in that: The prediction and adjustment module is also used for: Get the floor height of the intersection in a multi-story building; Get the diameter of the pipe to be installed at the intersection; The installation difficulty prediction index corresponding to the intersection is obtained based on the prediction model, floor height and the diameter of the pipe to be installed.

Images