Basement construction method and system based on BIM

Abstract

The invention relates to the field of building construction, in particular to a basement building method and system based on BIM. The method comprises the following steps: obtaining design arrangement information of a basement and building environment information, constructing an underground three-dimensional model, and analyzing the underground three-dimensional model to obtain building element points; obtaining a building area and an intersection area according to the building element points and the underground three-dimensional model, analyzing the intersection area to obtain an area coefficient, analyzing the underground three-dimensional model through the building area to obtain intersection points, and analyzing the intersection points to obtain a point coefficient; analyzing the underground three-dimensional model, constructing an underground construction model, analyzing the underground construction model, obtaining regional construction nodes, platform construction nodes, regional construction time and platform construction time, and generating a construction drawing according to the regional construction nodes, the platform construction nodes, the regional construction time and the platform construction time. The method is beneficial to optimizing the construction process.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and particularly to a BIM-based basement construction method and system. Background Art

[0002] With the continuous improvement of the requirements for efficiency and precision in the construction industry, BIM technology has become an important tool for solving problems such as information silos, design errors, and resource waste in traditional construction; through three-dimensional modeling, collaborative work, and information sharing, BIM enables close cooperation between different teams. Especially in basement construction, due to the complexity of underground space, accurate positioning of the central axis platform is particularly important.

[0003] As the foundation part of a building, the design and construction quality of the basement directly affect the stability and safety of the entire building; as the core reference line in basement construction, the accuracy of the central axis platform is directly related to the precision of the basement structure. The central axis platform (or core tube) is usually the core part of the building structure and involves the layout of facilities such as vertical transportation, water supply, electricity, and HVAC.

[0004] In the prior art, the basement design drawings lack consideration of construction process problems and the actual construction environment. For example, in the surrounding buildings of the basement, whether there are events of possible conflicts or collisions during the construction of the elevation platform structure; for the complex internal structure of the basement, there are construction conflicts and low-efficiency construction between the construction of the integrated pipe gallery and the central axis platform, which are problems that need to be solved. Summary of the Invention

[0005] The object of the present invention is to propose a BIM-based basement construction method for the problems existing in the background art.

[0006] The technical solution of the present invention: A BIM-based basement construction method includes the following steps:

[0007] S1. Obtain the design layout information and building environment information of the basement, and based on the design layout information and building environment information, construct an underground three-dimensional model, analyze the underground three-dimensional model, and obtain building element points;

[0008] S2. According to the building element points and the underground three-dimensional model, obtain the construction area and the intersection area, analyze the intersection area to obtain the area coefficient, analyze the underground three-dimensional model through the construction area to obtain the intersection points, and analyze the intersection points to obtain the point coefficient;

[0009] S3. Analyze the underground three-dimensional model, construct an underground construction model, analyze the underground construction model to obtain regional construction nodes, platform construction nodes, regional construction time, and platform construction time, and generate construction drawings based on the regional construction nodes, platform construction nodes, regional construction time, and platform construction time.

[0010] Preferably, obtain the design layout information and building environment information of the basement, and based on the design layout information and building environment information, construct an underground three-dimensional model. The process of analyzing the underground three-dimensional model to obtain building element points includes:

[0011] The design layout information includes basement foundation information, utility tunnel layout information, and central axis platform layout information. The basement foundation information includes basement design drawings, equipment layout drawings, and basement structure data; the utility tunnel layout information includes pipeline space and pipeline angle;

[0012] The central axis platform layout information includes platform foundation information and platform design data; the platform design data includes central axis platform space and platform angle; the central axis platform space includes support column space and platform space;

[0013] The building environment information includes floor platform elevation, building data, and environmental information; the building data includes topographic maps, building structure diagrams, and foundation structures;

[0014] Through BIM technology, according to the building structure diagram, foundation structure, and topographic map of the building environment information, construct a surrounding building model; according to the basement design drawings and basement structure data, construct a basement building model; according to the equipment layout drawings, construct an equipment space model; combine the surrounding building model, equipment space model, and basement structure model to obtain an underground physical model, and based on the design layout information, building environment information, and underground physical model, obtain an underground three-dimensional model;

[0015] Based on the underground three-dimensional model, obtain the contour edge line, divide the contour edge line into several line segments, denoted as edge points; based on the underground three-dimensional model and edge points, obtain building element points.

[0016] Preferably, the process of obtaining the construction area and intersection area based on the building element points and the underground three-dimensional model includes:

[0017] Based on the building element points of the underground three-dimensional model, obtain the building element points containing floor platform elevation information, denoted as construction points, obtain the continuous building range corresponding to the construction points and the numerical value of the floor platform elevation thereof, denoted as construction area - sequence Z, and based on sequence Z, obtain segment A, segment B, and segment C;

[0018] Set up the building color model y = (R, G, B);

[0019] According to the segmented areas A, B, C and the building color model, obtain the RGB values corresponding to the construction area - sequence Z. Based on the obtained RGB values and the construction areas of the underground three - dimensional model, obtain the construction color area - sequence Z;

[0020] Conduct color - mixing inspection on each construction color area. The process of color - mixing inspection is as follows: divide the construction color area into several construction color sub - areas, obtain the (R, G, B) of the construction color sub - areas, and analyze the (R, G, B) of the construction color sub - areas and the sequence Z of the construction color area to obtain the intersection area - sequence Z a Z b 。

[0021] Preferably, the process of analyzing the intersection area to obtain the area coefficient is as follows:

[0022] Analyze the intersection area to obtain the area coefficient G ab ;

[0023]

[0024] where G ab is the area coefficient of the intersection area between the construction color area - sequence Z a and the construction color area - sequence Z b ; h ab is the height value of the intersection area; s ab is the area of the intersection area; H is the difference between the highest value and the lowest value of the height edges between the construction color area - sequence Z a and the construction color area - sequence Z b ; S is the area of the largest area covering the intersection area among the construction color area - sequence Z a covering the intersection area and the construction color area - sequence Z b covering the intersection area of the largest area.

[0025] Preferably, the process of analyzing the underground three - dimensional model through the construction area to obtain the intersection points and analyzing the intersection points to obtain the point coefficient includes:

[0026] Analyze the integrated pipe gallery layout information and the central axis platform layout information through the pipe space, platform space and support column space to obtain the intersection view, and based on the intersection view, obtain the intersection boundary. Arbitrarily take a point on each intersection boundary and denote it as the intersection point;

[0027] Analyze the intersection point to obtain the point coefficient U a ;

[0028]

[0029] Among them, U a is the point coefficient of the intersection point of the utility tunnel and the central axis platform in each construction area; f is the construction area; α1 and α2 are the weight coefficients of the influence of the utility tunnel construction and the influence of the support column construction; q ab is the maximum difference between the intersection points at both ends of the utility tunnel in the central axis platform; k ab is the maximum difference between the intersection points in the support column; E is the length of the central axis platform; Δθ is the absolute value of the difference between the maximum pipeline angle in the utility tunnel and the platform angle; θ is the standard difference between the pipeline angle and the platform angle.

[0030] Preferably, the process of analyzing the underground three-dimensional model, constructing the underground construction model, and analyzing the underground construction model to obtain the regional construction nodes, platform construction nodes, regional construction time, and platform construction time includes:

[0031] Performing an initial simulation of the entire construction process on the underground three-dimensional model through 4D BIM technology to obtain the initial construction sequence and the initial construction time, and inputting the initial construction sequence and the initial construction time into the underground three-dimensional model to obtain the underground construction model;

[0032] Marking the building element points belonging to the intersection area as regional construction nodes; marking the intersection points in the building area as platform construction nodes;

[0033] Obtaining the initial construction time of the intersection area between building areas in each building area, and obtaining the regional construction time according to the obtained initial construction time;

[0034] Tq a =(1 + G ab ) * tq a ;

[0035] Among them, Tq a is the construction time corresponding to the intersection area of each building area; tq a is the initial construction time of the intersection area between building areas ab in building area a;

[0036] Obtaining the initial construction time between the intersection points in the central axis platform, and obtaining the platform construction time according to the obtained initial construction time;

[0037] Tp a =(1 + U a ) * tp a ;

[0038] Among them, Tp a is the construction time corresponding to the intersection points in the building area; tp aIt is the initial construction time between the intersection points in the central axis platform within the building area.

[0039] Preferably, the process of generating construction drawings based on the regional construction nodes, platform construction nodes, regional construction time, and platform construction time includes:

[0040] Send the intersection area, regional construction nodes, platform construction nodes, intersection points, regional construction time, and platform construction time to the relevant construction personnel to plan the construction sequence. Through the construction sequence, associate the regional construction nodes and platform construction nodes, and mark the corresponding regional construction time and platform construction time to obtain a construction vector. Through the initial construction time and the construction vector, obtain the cumulative construction time, and input the cumulative construction time into the corresponding regional construction node or platform construction node to obtain construction progress points; Connect the building element points with the construction progress points through the construction vector to obtain construction drawings.

[0041] The present invention also discloses a BIM-based basement construction system, including a management center, which is communicatively connected to a model construction module, a data analysis module, and a data processing module:

[0042] The model construction module is used to obtain the design layout information and building environment information of the basement, and based on the design layout information and building environment information, construct a three-dimensional underground model, and analyze the three-dimensional underground model to obtain building element points;

[0043] The data analysis module is used to obtain the construction area and intersection area based on the building element points and the three-dimensional underground model, analyze the intersection area to obtain the area coefficient, analyze the three-dimensional underground model through the construction area to obtain intersection points, and analyze the intersection points to obtain point coefficients;

[0044] The data processing module is used to analyze the three-dimensional underground model, construct an underground construction model, analyze the underground construction model to obtain regional construction nodes, platform construction nodes, regional construction time, and platform construction time, and generate construction drawings based on the regional construction nodes, platform construction nodes, regional construction time, and platform construction time.

[0045] Compared with the prior art, the above technical solutions of the present invention have the following beneficial technical effects:

[0046] By constructing a three-dimensional underground model, marking the building element points, marking the key building points of the basement and the surrounding buildings related to the basement, visualizing the building construction location;

[0047] By analyzing the construction areas and intersection areas, the construction conflicts between platforms can be identified, which helps to discover the construction conflict areas and optimize the construction sequence. The area coefficient reflects the degree of construction conflicts between platforms, which is helpful for adjusting the construction time. By analyzing the intersection points, the construction conflicts and construction efficiency in each basement can be analyzed, and with the help of the point coefficient, the construction time can be refined, improving the resource utilization efficiency and construction efficiency, and reducing the construction interference between multiple areas. By using the regional construction nodes, platform construction nodes, regional construction time and platform construction time, construction drawings can be generated to achieve intelligent operation and maintenance, and improve the cooperation of basement projects. Brief Description of the Drawings

[0048] Figure 1 This is a schematic diagram of an embodiment proposed by the present invention. Detailed Implementation Modes

[0049] Embodiment 1, as Figure 1 shown, a BIM-based basement construction method proposed by the present invention includes the following steps:

[0050] S1. Obtain the design layout information and building environment information of the basement, and based on the design layout information and building environment information, construct an underground three-dimensional model, and analyze the underground three-dimensional model to obtain building element points;

[0051] S2. According to the building element points and the underground three-dimensional model, obtain the construction areas and intersection areas, and analyze the intersection areas to obtain the area coefficient. Analyze the underground three-dimensional model through the construction areas to obtain the intersection points, and analyze the intersection points to obtain the point coefficient;

[0052] S3. Analyze the underground three-dimensional model to construct an underground construction model, analyze the underground construction model to obtain regional construction nodes, platform construction nodes, regional construction time and platform construction time, and generate construction drawings according to the regional construction nodes, platform construction nodes, regional construction time and platform construction time.

[0053] It should be further noted that in the specific implementation process, the process of obtaining the design layout information and building environment information of the basement, and based on the design layout information and building environment information, constructing an underground three-dimensional model, and analyzing the underground three-dimensional model to obtain building element points is as follows:

[0054] The design layout information includes basement foundation information, comprehensive pipe gallery layout information and central axis platform layout information;

[0055] The basement basic information includes basement design drawings, equipment layout plans, and basement structure data; the basement design drawings include entrance and exit design, ramp design, elevator shaft design, etc.; the equipment layout plans include pipeline layout, bridge layout, cable layout, etc.; the basement structure data includes dimension data of the foundation, walls, beams, columns, etc.

[0056] The utility tunnel layout information includes pipeline space and pipeline angle.

[0057] The central axis platform layout information includes platform basic information and platform design data; the platform design information includes basic information such as the dimensions, location, elevation, and support method of the central axis platform; the platform design data includes the central axis platform space and platform angle; the central axis platform space includes the support column space and the platform space.

[0058] The building environment information refers to the building information of the relevant areas around the basement, including the elevation of the floor platform, building data, and environmental information; the building data includes topographic maps, building structure diagrams, and foundation structures; the environmental information includes geological exploration information and hydrological information.

[0059] Through BIM technology, based on the building structure diagram of the building environment information, the building structures in the building structure diagram are identified, and combined with the foundation structure and topographic map, a surrounding building model is constructed; based on the basement design drawings and combined with the basement structure data, a basement building model is constructed; based on the various equipment layouts in the equipment layout plan, an equipment space model is constructed; the surrounding building model and the equipment space model are combined with the basement structure model to obtain an underground physical model, and the utility tunnel layout information, central axis platform layout information, floor platform elevation, and environmental information are respectively marked at the corresponding positions of the underground physical model to obtain an underground three-dimensional model.

[0060] Perform building contour recognition on the underground three-dimensional model. The building contour recognition refers to identifying the contour edges of all buildings and the basement in the underground three-dimensional model; obtain the contour edge lines, divide the contour edge lines into several line segments, denoted as edge points; mark the information of the underground three-dimensional model into the corresponding edge points. If the information in multiple edge points is the same, any one edge point can be selected, denoted as a building element point, and mark the building element point at the corresponding position in the underground three-dimensional model.

[0061] It should be further noted that in the specific implementation process, the process of obtaining the construction area and the intersection area based on the building element points and the underground three-dimensional model, analyzing the intersection area to obtain the area coefficient, analyzing the underground three-dimensional model through the construction area to obtain the intersection points, and analyzing the intersection points to obtain the point coefficient is as follows:

[0062] Perform elevation traversal on the building element points in the underground three-dimensional model. The elevation traversal refers to traversing the information within the building element points to obtain the building element points containing the elevation information of the floor platforms, denoted as construction points. Obtain the building range with consistent and continuous elevation of the floor platforms corresponding to the construction points and the numbers of the elevation of the floor platforms, denoted as construction area - sequence Z. Randomly segment sequence Z according to the numerical order within sequence Z to obtain segment A, segment B, and segment C;

[0063] Set the building color model y = (R, G, B);

[0064] Input segment A, segment B, and segment C into R, G, and B of the building color model respectively to obtain the RGB values corresponding to construction area - sequence Z. Through the obtained RGB values, highlight the corresponding construction areas of the underground three-dimensional model. The color highlighting refers to coloring the corresponding construction areas of the underground three-dimensional model through the RGB values of the construction areas without affecting the display of all information in the building areas, and obtain construction color area - sequence Z;

[0065] Conduct color adjustment and inspection on each construction color area. The process of color adjustment and inspection is as follows: Divide the construction color area into several construction color sub-areas, obtain the (R, G, B) of the construction color sub-areas, and make a consistency comparison between the obtained (R, G, B) of the construction color sub-areas and sequence Z of the construction color area; If the obtained (R, G, B) of the construction color sub-areas is inconsistent with sequence Z of the construction color area, then summarize the construction color sub-areas corresponding to the same RGB values, and obtain sequence Z of the adjacent construction color areas of the summarized construction color sub-areas a and sequence Z b and denote the summarized construction color sub-areas as intersection area - sequence Z a Z b ;

[0066] It should be further noted that in the specific implementation process, making a consistency comparison between the obtained (R, G, B) of the construction color sub-areas and sequence Z of the construction color area means comparing whether the numerical values obtained by arranging the numerical values corresponding to RGB in order are the same as sequence Z; It should be noted that when there are multiple color markings in the same space of the underground three-dimensional model, the colors in the same space will change, that is, the RGB values will change;

[0067] Analyze the intersection area to obtain the area coefficient G ab ;

[0068]

[0069] where G ab is the construction color area - sequence Z aCoefficient of the intersection area with the construction color area - sequence Z b ; h is the height value of the intersection area ab ; s ab is the area of the intersection area; H is the construction color area - sequence Z a with the construction color area - sequence Z b the difference between the highest and lowest values of the height edges; S is the construction color area - sequence Z a the maximum area covering the intersection area and the area of the covering area of the maximum area covering the intersection area by the construction color area - sequence Z b ;

[0070] Analyze the integrated pipe gallery layout information and the central axis platform layout information in the basement construction model of each construction area of the underground model. Through the overlapping vertical view between the pipe space, the platform space, and the support column space, obtain the intersection view, obtain the vertical boundary of the intersection view, denoted as the intersection boundary, and take any point on each intersection boundary, denoted as the intersection point;

[0071] Analyze the intersection point to obtain the point coefficient U a ;

[0072]

[0073] Among them, U a is the point coefficient of the intersection point of the integrated pipe gallery and the central axis platform in each construction area; f is the construction area; α1, α2 are the weight coefficients of the integrated pipe gallery construction influence and the support column construction influence; q ab is the maximum difference between the intersection points at both ends of the integrated pipe gallery in the central axis platform; k ab is the maximum difference between the intersection points in the support column; E is the length of the central axis platform; Δθ is the absolute value of the difference between the maximum pipe angle and the platform angle in the integrated pipe gallery; θ is the standard difference between the pipe angle and the platform angle, θ > 0.

[0074] It should be further noted that in the specific implementation process, when analyzing the underground three - dimensional model, constructing the underground construction model, analyzing the underground construction model, obtaining the regional construction nodes, platform construction nodes, regional construction time, and platform construction time, the process of generating construction drawings according to the regional construction nodes, platform construction nodes, regional construction time, and platform construction time is as follows:

[0075] Conduct an initial simulation of the entire construction process of the underground three - dimensional model through 4D BIM technology to obtain the initial construction sequence and the initial construction time, and input the initial construction sequence and the initial construction time into the underground three - dimensional model to obtain the underground construction model;

[0076] Mark the building element points within the intersection area as area construction nodes, and mark the area coefficient within the area construction nodes; mark the intersection points within the building area as platform construction nodes, and mark the point coefficient within each platform construction node;

[0077] Obtain the initial construction time of the intersection area between building areas in each building area, and obtain the area construction time according to the obtained initial construction time;

[0078] Tq a =(1 + G ab ) * tq a ;

[0079] Among them, Tq a is the construction time corresponding to the intersection area of each building area; tq a is the initial construction time of the intersection area between building areas a and b in building area a;

[0080] Obtain the initial construction time between the intersection points within the central axis platform, and obtain the platform construction time according to the obtained initial construction time;

[0081] Tp a =(1 + U a ) * tp a ;

[0082] Among them, Tp a is the construction time corresponding to the intersection points within the building area; tp a is the initial construction time between the intersection points within the central axis platform in the building area;

[0083] Send the intersection area, area construction nodes, platform construction nodes, intersection points, area construction time, and platform construction time to the relevant construction personnel to plan the construction sequence. Through the construction sequence, associate the area construction nodes and platform construction nodes, and mark the corresponding area construction time and platform construction time to obtain the construction vector. Through the initial construction time and the construction vector, calculate the cumulative construction time for constructing to the area construction node or platform construction node, and input the cumulative construction time into the corresponding area construction node or platform construction node to obtain the construction progress point; connect the building element points with the construction progress points through the construction vector to obtain the construction drawing; send the construction drawing to the relevant construction personnel to construct the basement, and at the same time update the construction progress to the underground construction model to observe the update of the basement construction process.

[0084] Embodiment 2. A BIM - based basement construction system proposed in the present invention is applied to a BIM - based basement construction method described in Embodiment 1, and specifically includes a management center, which is communicatively connected to a model construction module, a data analysis module, and a data processing module:

[0085] The model construction module is used to obtain the design layout information and building environment information of the basement, and based on the design layout information and building environment information, construct a three-dimensional underground model, analyze the three-dimensional underground model, and obtain building element points;

[0086] The data analysis module is used to obtain the construction area and intersection area according to the building element points and the three-dimensional underground model, analyze the intersection area to obtain the area coefficient, analyze the three-dimensional underground model through the construction area to obtain intersection points, and analyze the intersection points to obtain point coefficients;

[0087] The data processing module is used to analyze the three-dimensional underground model, construct an underground construction model, analyze the underground construction model to obtain regional construction nodes, platform construction nodes, regional construction time and platform construction time, and generate construction drawings according to the regional construction nodes, platform construction nodes, regional construction time and platform construction time.

[0088] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A BIM-based basement construction method, characterized in that, It includes the following steps: S1. Obtain the design layout information and building environment information of the basement, and based on the design layout information and building environment information, construct an underground three-dimensional model, analyze the underground three-dimensional model, and obtain building element points; S2. According to the building element points and the underground three-dimensional model, obtain the construction area and the intersection area, analyze the intersection area to obtain the area coefficient, analyze the underground three-dimensional model through the construction area to obtain the intersection points, and analyze the intersection points to obtain the point coefficient; S3. Analyze the underground three-dimensional model to construct an underground construction model, analyze the underground construction model to obtain the area construction nodes, platform construction nodes, area construction time, and platform construction time, and generate construction drawings according to the area construction nodes, platform construction nodes, area construction time, and platform construction time.

2. The method for constructing a basement based on BIM according to claim 1, wherein, The process of obtaining the design layout information and building environment information of the basement, and based on the design layout information and building environment information, constructing an underground three-dimensional model, and analyzing the underground three-dimensional model to obtain building element points includes: The design layout information includes the basement foundation information, the integrated pipe gallery layout information, and the central axis platform layout information. The basement foundation information includes the basement design drawings, equipment layout drawings, and basement structure data; the integrated pipe gallery layout information includes the pipe space and pipe angles; The central axis platform layout information includes the platform foundation information and platform design data; the platform design data includes the central axis platform space and platform angles; the central axis platform space includes the support column space and the platform space; The building environment information includes the floor platform elevation, building data, and environmental information; the building data includes the topographic map, building structure diagram, and foundation structure; Through BIM technology, according to the building structure diagram, foundation structure, and topographic map of the building environment information, construct a surrounding building model; according to the basement design drawings and basement structure data, construct a basement building model; according to the equipment layout drawings, construct an equipment space model; combine the surrounding building model, equipment space model, and basement structure model to obtain an underground physical model, and obtain an underground three-dimensional model according to the design layout information, building environment information, and underground physical model; According to the underground three-dimensional model, obtain the contour edge line, divide the contour edge line into several line segments, denoted as edge points; according to the underground three-dimensional model and the edge points, obtain the building element points.

3. The method for constructing a basement based on BIM according to claim 2, characterized in that, The process of obtaining the construction area and the intersection area according to the building element points and the underground three-dimensional model includes: According to the building element points of the underground three-dimensional model, obtain the building element points containing the floor platform elevation information, denoted as construction points, obtain the continuous building range corresponding to the construction points and the number of the floor platform elevation, denoted as the construction area - sequence Z, and obtain the segments A, B, and C according to the sequence Z; Set the building color model y = (R, G, B); According to segmented section A, segmented section B, segmented section C, and the building color model, obtain the RGB values corresponding to the construction area - sequence Z. According to the obtained RGB values and the construction area of the underground three - dimensional model, obtain the construction color area - sequence Z; Perform color matching and troubleshooting on each construction color area. The color matching and troubleshooting process is as follows: Divide the construction color area into several construction color sub-areas, obtain the (R, G, B) values of the construction color sub-areas, analyze the (R, G, B) values of the construction color sub-areas and the sequence Z of the construction color area to obtain the intersection area - sequence Z a Z b 。 4. The method for constructing a basement based on BIM according to claim 3, characterized in that, The process of analyzing the intersection area to obtain the area coefficient is as follows: Analyze the intersection area to obtain the regional coefficient G ab ; Among them, G ab is the regional coefficient of the intersection area of the construction color area - sequence Z a and the construction color area - sequence Z b ; h ab is the height value of the intersection area; s ab is the area of the intersection area; H is the difference between the highest value and the lowest value of the height edges between the construction color area - sequence Z a and the construction color area - sequence Z b ; S is the area of the largest area covering the intersection area by the construction color area - sequence Z a and the area of the covering area of the largest area covering the intersection area by the construction color area - sequence Z b .

5. The method for constructing a basement based on BIM according to claim 4, wherein The process of analyzing the underground three - dimensional model through the construction area to obtain the intersection points and analyzing the intersection points to obtain the point coefficient includes: Analyze the integrated pipe gallery layout information and the central axis platform layout information through the pipe space, platform space, and support column space to obtain the intersection view. According to the intersection view, obtain the intersection boundary. Arbitrarily select a point on each intersection boundary and denote it as the intersection point; Analyze the intersection points to obtain the point coefficient U a ; Among them, U a is the point coefficient of the intersection point of the utility tunnel and the central axis platform in each construction area; f is the construction area; α1 and α2 are the weight coefficients of the influence of the utility tunnel construction and the influence of the support column construction; q ab is the maximum difference between the intersection points at both ends of the utility tunnel in the central axis platform; k ab is the maximum difference between the intersection points in the support column; E is the length of the central axis platform; Δθ is the absolute value of the difference between the maximum pipeline angle and the platform angle in the utility tunnel; θ is the standard difference between the pipeline angle and the platform angle.

6. A BIM-based basement construction method according to claim 1 or 5, characterized in that The process of analyzing the underground three - dimensional model to construct the underground construction model and analyzing the underground construction model to obtain the regional construction nodes, platform construction nodes, regional construction time, and platform construction time includes: Conduct an initial simulation of the entire construction process of the underground three - dimensional model through 4D BIM technology to obtain the initial construction sequence and initial construction time, and input the initial construction sequence and initial construction time into the underground three - dimensional model to obtain the underground construction model; Denote the building element points belonging to the intersection area as regional construction nodes; denote the intersection points within the building area as platform construction nodes; Obtain the initial construction time of the intersection area between building areas in each building area. According to the obtained initial construction time, obtain the regional construction time; Tq a = (1 + G ab ) * tq a ; Among them, Tq a is the construction time corresponding to the intersection area of each building area; tq a is the initial construction time of the intersection area between building areas a and b in building area a; Obtain the initial construction time between the intersection points within the central axis platform. According to the obtained initial construction time, obtain the platform construction time; Tp a = (1 + U a ) * tp a ; Among them, Tp a is the construction time corresponding to the intersection points within the building area; tp a is the initial construction time between the intersection points within the central axis platform in the building area.

7. A BIM-based basement construction method according to claim 6, characterized in that, The process of generating construction drawings according to the regional construction nodes, platform construction nodes, regional construction time, and platform construction time includes: Send the intersection area, regional construction nodes, platform construction nodes, intersection points, regional construction time, and platform construction time to the relevant construction personnel to plan the construction sequence. Through the construction sequence, associate the regional construction nodes and platform construction nodes, and mark the corresponding regional construction time and platform construction time to obtain the construction vector. Through the initial construction time and the construction vector, obtain the cumulative construction time, and input the cumulative construction time into the corresponding regional construction node or platform construction node to obtain the construction progress points. Connect the building element points with the construction progress points through the construction vector to obtain the construction drawings.

8. A BIM-based basement construction system, specifically applied to a BIM-based basement construction method described in any one of claims 1 to 7, including a management center, characterized in that, The management center is communicatively connected to a model construction module, a data analysis module, and a data processing module: The model construction module is used to obtain the design layout information and building environment information of the basement, and based on the design layout information and building environment information, construct an underground three - dimensional model and analyze the underground three - dimensional model to obtain building element points; The data analysis module is used to obtain the construction area and intersection area according to the building element points and the underground three - dimensional model, analyze the intersection area to obtain the area coefficient, analyze the underground three - dimensional model through the construction area to obtain the intersection points, and analyze the intersection points to obtain the point coefficient; The data processing module is used to analyze the underground three-dimensional model, construct an underground construction model, analyze the underground construction model, obtain regional construction nodes, platform construction nodes, regional construction time, and platform construction time, and generate construction drawings based on the regional construction nodes, platform construction nodes, regional construction time, and platform construction time.

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