Foundation engineering construction planning system and method based on BIM technology

Abstract

The invention provides a foundation engineering construction planning system and method based on a BIM technology, and relates to the technical field of engineering construction. The foundation engineering construction planning system based on the BIM technology comprises a data acquisition module, the data acquisition module is bidirectionally connected with a model management module, the data acquisition module and the model management module are bidirectionally connected with a central control module, the central control module is connected with a data transmission module, and the data transmission module is connected with a data processing module. The data transmission module is connected with an upper computer, and the upper computer is connected with a process simulation module, a construction management module and a business management module. By arranging the process simulation module in the system, a user can establish a VR scene for the current situation of a site through the process simulation module when using the system, perform construction simulation through the VR scene in combination with an internal time control program, and regulate and control the construction period through the time control program, so that the planning effect of the system is improved; and the overall practicability of the system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and in particular to a foundation engineering construction planning system and method based on BIM technology. Background Art

[0002] BIM uses models as carriers and digital technology to integrate and display various physical data and actual information of building design, construction, and operation in three dimensions, thereby providing a collaborative work platform for information exchange for all parties involved in the construction project. Foundation engineering is the basic engineering of building construction. When conducting foundation engineering construction, it usually includes earth excavation, earth backfilling, site leveling, and calculation of the amount of earth to be excavated at high places in the site. The traditional earthwork balance calculation method is to use the grid method to draw an earthwork balance diagram, calculate the amount of earth to be excavated at high places in the site and the amount of earth to be backfilled at low places. The calculation process is cumbersome and complicated, which can easily lead to calculation errors. At the same time, the construction period of the construction process usually has a certain plan. As a basic project, the foundation engineering will affect the overall construction period if it cannot be completed on time. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the present invention provides a foundation engineering construction planning system and method based on BIM technology, which solves the problems that the existing construction planning system is difficult to realize the function of simulating the construction process, has inaccurate grasp of the construction period, slow data processing speed, and poor use effect and practicality.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A foundation engineering construction planning system based on BIM technology, comprising a data acquisition module, the data acquisition module is bidirectionally connected to a model management module, the data acquisition module and the model management module are bidirectionally connected to a central control module, and the central control module is connected to a data transmission module;

[0007] The data transmission module is connected to a host computer, the host computer is connected to a process simulation module, a construction management module and a business management module, the construction management module is connected to an earthwork engineering management module, a cushion engineering management module, a masonry engineering management module, a formwork engineering management module, a steel engineering management module and a concrete engineering management module.

[0008] Preferably, the data acquisition module includes an image capture module and a point measurement module, the image capture module is connected to a drone, a panoramic camera and a depth camera, and the point measurement module is connected to a total station, a level and a GPS locator.

[0009] Preferably, the model management module includes a data acquisition module and a model generation module, the data acquisition module is connected to a data extraction program, and the model generation module is connected to a sketch drawing module, a model construction module and a model rendering module.

[0010] Preferably, the central control module includes a central database, the central database is connected to a trigger module and a model training module, the trigger module is connected to an elevation trigger and a coordinate trigger module, and the model training module is connected to a training set and a verification set.

[0011] Preferably, the data transmission module includes a wireless transceiver module, and the wireless transceiver module is connected to a Bluetooth connection module and a wireless network connection module.

[0012] Preferably, the process simulation module includes a VR simulation system, the VR simulation system is connected to a scene construction module and a time management module, the scene construction module is connected to a basic establishment module and a model fitting module, and the time management module is connected to a time control program.

[0013] Preferably, the business management module includes a work library module, and the work library module is connected to a drawing file management module, a bidding quotation management module, a cost budget management module and a resource planning management module.

[0014] A foundation engineering construction planning method based on BIM technology specifically comprises the following steps:

[0015] S1. Site data collection

[0016] Use the total station to introduce two points from the nearby national elevation benchmark to the vicinity of the construction site, use steel bars to mark them, and select an appropriate number of points from the drawings as the boundary points of the foundation in combination with the drawings. Obtain the coordinates of each point through the drawings, use one of the two introduced benchmarks as the station of the total station and the other as the backsight point, and perform layout in combination with the boundary point coordinate drawings. Mark the laid points with wooden stakes or colored flags. Use the GPS locator to layout the points that are difficult for the total station to reach. After the layout is completed, fix the panoramic camera to the bottom of the drone to collect multiple panoramic images of the construction site. Then, fix the depth camera to the bottom of the drone to collect multiple depth images of the construction site. After the image collection is completed, determine the elevation of each point with a level and make records.

[0017] S2. Establishment of site database

[0018] Input the collected data and images into the central control module, create a worksheet through the built-in MySQL database of the central control module, store the collected data, and create triggers for elevation data and coordinate data through the trigger module. Input the relevant data of multiple other projects into the model training module, divide the input data into a subsets through the model training module, use the union of a-1 subsets as the training set, and the remaining subset as the verification set;

[0019] S3. Key data extraction

[0020] Input the relevant data of the construction site into the data acquisition module, integrate the collected data of the site through the data extraction program, substitute the elevation information and coordinate information of the site into the screening program according to the training results to calculate the priority of each information point, match the elevation data and coordinate data, and sort the matched arrays by priority to obtain the prioritized array DOT[Umax+1], where Dmax is the number of the largest array;

[0021] S4. Site model construction

[0022] Let k-0, k be the subscript of the dispatch information point in the array DOT, determine the position of the priority array in the site, dispatch array DOT[k], determine its continuity with other points, draw its location in the spatial layout through the sketch drawing module, connect the arrays to form a sketch of the site status, import the generated sketch into the model building module, establish a white model of the site status, and render it through the model rendering module;

[0023] S5. VR scene establishment

[0024] The acquired depth image and panoramic image are input into the VR simulation system. Through the basic establishment module, the focal length is focused on a target area respectively to generate multiple multi-focus images. The enhanced differential evolution method is used to obtain the optimal block size of each multi-focus image, and the multi-focus image is segmented. Only one target area is retained in each part. Each part of each segmented multi-focus image is evaluated by the image clarity evaluation function, and the key points of the image are detected. Combined with the key points of each image, the mask image of the multi-focus image is established, and a Gaussian pyramid is made for the mask image of the multi-focus image. Starting from the starting image with the lowest resolution, each layer is spliced ​​to obtain a synthesized high-definition image. Through the model fitting module, the high-definition image is fitted as a texture and a white film, and combined with the rendered model, the site scene is established;

[0025] S6. Simulate construction progress

[0026] Through the VR simulation system, the completion model of the site foundation and the established original site model are superimposed to determine the overall elevation deviation of the site, adjust the earthwork balance in the site, and determine the construction process and construction time through the built-in time control program of the time management module. Combined with the construction period, the construction process is optimized to ensure that the foundation construction process is completed within the construction period;

[0027] S7. Construction organization plan

[0028] Combined with the simulation construction results, the construction management module can be used to conduct on-site construction measurement and calculate the excavation workload before construction begins. The excavation of earthwork can be carried out only after the location of the building, structure or site has passed the acceptance of the positioning control line. After excavation or backfilling to the corresponding elevation, the excavated bottom surface is compacted, the cushion layer is made, the steel bars and formwork are configured according to the drawings, and the relevant brickwork on the drawings is laid, and then concrete is poured to complete the foundation construction;

[0029] S8. Cost-profit accounting

[0030] Organize all the data of the foundation project, establish a work library through the work library module, compare the construction cost and bid quotation, select the appropriate supplier, optimize resource supply, and estimate project profit.

[0031] Preferably, in S2, the model training module uses an unsupervised training method to train the data extraction program, in S4, the sketch drawing module realizes its use function based on AutoCAD software, the model building module realizes its use function based on Rhi no software and Sketchup software, and the model rendering module realizes its use function based on Lumion software.

[0032] Preferably, in S7, the on-site construction measurement content includes checking and verifying the control network, adding control piles and leveling points, measuring and setting up grids, and drawing a topographic map of the construction site.

[0033] (III) Beneficial effects

[0034] The present invention provides a foundation engineering construction planning system and method based on BIM technology, which has the following beneficial effects:

[0035] 1. The present invention provides a foundation engineering construction planning system and method based on BIM technology. Compared with the existing foundation engineering construction planning method, the foundation engineering construction planning method is provided with a process simulation module inside. When using the method, the user can use the process simulation module to establish a VR scene for the current status of the site. During use, the user can combine the internal time control program to simulate the construction through the VR scene, and adjust the construction period through the time control program to optimize the construction process, improve the planning effect of the system, and improve the overall practicality of the system.

[0036] 2. The present invention provides a foundation engineering construction planning system and method based on BIM technology. Compared with the existing foundation engineering construction planning system, the foundation engineering construction planning method adopts the establishment of a central database to store the collected basic on-site construction information, and establishes triggers according to the data type to facilitate the subsequent data extraction, thereby improving the work efficiency of the system as a whole when processing data. At the same time, by training the program, the accuracy of the system when processing data is improved, thereby improving the overall use effect of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the system working process of the present invention;

[0038] Figure 2 It is a flow chart of the data acquisition module of the present invention;

[0039] Figure 3 It is a flow chart of the model management module of the present invention;

[0040] Figure 4 It is a flow chart of the central control module of the present invention;

[0041] Figure 5 It is a flow chart of the data transmission module of the present invention;

[0042] Figure 6 It is a schematic diagram of the process simulation module of the present invention;

[0043] Figure 7 It is a flowchart of the construction management module of the present invention;

[0044] Figure 8 It is a flowchart of the business management module of the present invention.

[0045] Among them, 1. Data acquisition module; 2. Model management module; 3. Central control module; 4. Data transmission module; 5. Host computer; 6. Process simulation module; 7. Construction management module; 8. Business management module; 101. Image shooting module; 102. UAV; 103. Panoramic camera; 104. Depth camera; 105. Point measurement module; 106. Total station; 107. Level; 108. GPS locator; 201. Data acquisition module; 202. Data extraction program; 203. Model generation module; 204. Sketch drawing module; 205. Model construction module; 206. Model rendering module; 301. Central database; 302. Trigger module; 303. Elevation trigger module; 304. Coordinate trigger module; 305. Model Training module; 306, training set; 307, validation set; 401, wireless transceiver module; 402, Bluetooth connection module; 403, wireless network connection module; 601, VR simulation system; 602, scene construction module; 603, foundation establishment module; 604, model fitting module; 605, time management module; 606, time control program; 701, earthwork engineering management module; 702, cushion engineering management module; 703, masonry engineering management module; 704, formwork engineering management module; 705, steel bar engineering management module; 706, concrete engineering management module; 801, work library module; 802, drawing file management module; 803, bidding quotation management module; 804, cost budget management module; 805, resource planning management module. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Embodiment 1:

[0048] like Figure 1-8 As shown, the embodiment of the present invention provides a foundation engineering construction planning system based on BIM technology, including a data acquisition module 1, which is conducive to realizing the basic data acquisition function of the system. The data acquisition module 1 is bidirectionally connected with a model management module 2, which is convenient for users to model the original situation of the site through the system, and is convenient for subsequent planning and construction. The data acquisition module 1 and the model management module 2 are bidirectionally connected with a central control module 3, which is conducive to coordinating the work between various institutions of the system and improving the use effect of the system. The central control module 3 is connected with a data transmission module 4, which is conducive to realizing the data transmission and communication function between various structures in the system;

[0049] The data transmission module 4 is connected to a host computer 5, which can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices, which is conducive to realizing the basic use functions of the system. The host computer 5 is connected to a process simulation module 6, a construction management module 7 and a business management module 8, which is conducive to the user to complete a preliminary simulation of the site construction process through the system, and is convenient for the user to plan the foundation project, improve construction efficiency, and ensure the construction period. The construction management module 7 is connected to an earthwork engineering management module 701, a cushion engineering management module 702, a masonry engineering management module 703, a formwork engineering management module 704, a steel engineering management module 705 and a concrete engineering management module 706, which is conducive to realizing the system's function of unified management of various distributed sub-projects.

[0050] The data acquisition module 1 includes an image shooting module 101 and a point measurement module 105. The image shooting module 101 is connected to a drone 102, a panoramic camera 103 and a depth camera 104, which is beneficial for users to complete image acquisition at a certain height, improve the comprehensiveness of image acquisition, and avoid subsequent image stitching, which affects the image accuracy. The point measurement module 105 is connected to a total station 106, a level 107 and a GPS locator 108, which is beneficial for users to complete foundation construction layout work according to on-site conditions and to measure the elevation. The model management module 2 includes a data acquisition module 201 and a model generation module 203. The data acquisition module 201 is connected to a data extraction program 202. The model generation module 203 is connected to a sketch drawing module 204, a model construction module 205 and a model rendering module 206, which is beneficial for users to complete the generation of sketches through the system, modeling in combination with sketches, and rendering the models.

[0051] The central control module 3 includes a central database 301, which is connected to a trigger module 302 and a model training module 305. The trigger module 302 is connected to an elevation trigger 303 and a coordinate trigger module 304, which is convenient for subsequent classification and extraction of elevation data and coordinate data in the database. The model training module 305 is connected to a training set 306 and a verification set 307, which is conducive to training the programs and models used by the system and improving the use effect of the system. The data transmission module 4 includes a wireless transceiver module 401, which is connected to a Bluetooth connection module 402 and a wireless network connection module 403, which is convenient for providing users with a variety of different communication connection options.

[0052] The process simulation module 6 includes a VR simulation system 601, which is connected to a scene construction module 602 and a time management module 605. The scene construction module 602 is connected to a basic establishment module 603 and a model fitting module 604, which is beneficial for users to complete the simulation of the site through the system. The time management module 605 is connected to a time control program 606, which is beneficial for users to control the construction period and improve the overall practicality of the system. The business management module 8 includes a work library module 801, which is connected to a drawing file management module 802, a bid quotation management module 803, a cost budget management module 804 and a resource planning management module 805, which is convenient for users to manage various settlement information through the system.

[0053] Embodiment 2:

[0054] like Figure 1-8 As shown, an embodiment of the present invention provides a foundation engineering construction planning method based on BIM technology, which specifically includes the following steps:

[0055] S1. Site data collection

[0056] Two points are introduced from the nearby national elevation benchmark point by the total station 106 to the vicinity of the construction site, and are marked with steel bars. In combination with the drawings, an appropriate number of points are selected from the drawings as the boundary points of the foundation, and the coordinates of each point are obtained through the drawings. One of the two introduced benchmark points is used as the station of the total station 106, and the other is used as the backsight point, which is conducive to improving the accuracy of the layout. The layout is carried out in combination with the boundary point coordinate drawings, and the laid points are marked with wooden stakes or colored flags. The points that are difficult for the total station 106 to reach are laid out by the GPS locator 108. After the layout is completed, the panoramic camera 103 is fixed to the bottom of the drone 102 to collect multiple panoramic images of the construction site. After that, the depth camera 104 is fixed to the bottom of the drone 102 to collect multiple depth images of the construction site. After the image collection is completed, the elevation of each point is determined by the level meter 107, and records are made to realize the collection of basic information of the site in the early stage;

[0057] S2. Establishment of site database

[0058] Input the collected data and images into the central control module 3, establish a worksheet through the built-in MySQL database of the central control module 3, store the collected data, and establish triggers for the elevation data and coordinate data respectively through the trigger module 302, input the relevant data of multiple other projects into the model training module 305, divide the input data into a subsets through the model training module 305, use the union of a-1 subsets as the training set 306, and use the remaining subset as the verification set 307, so as to realize the training function of the program of the method and improve the accuracy of the program when the method is running;

[0059] S3. Key data extraction

[0060] The relevant data of the construction site is input into the data acquisition module 201, and the collected data of the site is integrated through the data extraction program 202. The data integration is realized by the following code:

[0061] train_data=pd.read_csv('training30.csv')

[0062] test_data=pd.read_csv('test30.csv')

[0063] total_data=pd.concat([train_data,test_data],axis=0)

[0064] total_data.info()

[0065] According to the training results, the elevation information and coordinate information of the site are substituted into the screening program to calculate the priority of each information point. Data screening is achieved through the following code:

[0066] cdma=pd.read_csv('cdma.xls', encoding='gbk', sep='\t')

[0067] print(cdma.shape)

[0068] cdma=cdma[(cdma['elevation data'])&(cdma['coordinate data'].isin(['elevation value','coordinate point']))]

[0069] print(cdma.shape)

[0070] #cdma=cdma[~cdma['array'].str.contains('elevation value + coordinate point')]

[0071] #print(cdma.shape)

[0072] Match the elevation data and the coordinate data, and prioritize the matched arrays to obtain a prioritized array DOT[Umax+1], where Dmax is the number of the largest array;

[0073] S4. Site model construction

[0074] Let k-0, k be the subscript of the dispatch information point in the array DOT, determine the position of the priority array in the venue, dispatch the array DOT[k], determine its continuity with other points, draw its location in the spatial layout through the sketch drawing module 204, connect the arrays to form a sketch of the current situation of the venue, import the generated sketch into the model building module 205, build a white model of the current situation of the venue, and render it through the model rendering module 206, which is conducive to improving the effect of the model built by this method and facilitating the subsequent VR scene construction;

[0075] S5. VR scene establishment

[0076] The acquired depth image and panoramic image are input into the VR simulation system 601. Through the basic establishment module 603, the focal length is focused on a target area respectively to generate multiple multi-focus images. The enhanced differential evolution method is used to obtain the optimal block size of each multi-focus image. The multi-focus image is segmented, and only one target area is retained in each part. Each part of each segmented multi-focus image is evaluated by an image clarity evaluation function, and the key points of the image are detected. Combined with the key points of each image, a mask image of the multi-focus image is established, and a Gaussian pyramid is made for the mask image of the multi-focus image. Starting from the starting image with the lowest resolution, each layer is spliced ​​to obtain a synthesized high-definition image. Through the model fitting module 604, the high-definition image is fitted as a texture and a white film. Combined with the rendered model, a site scene is established to improve the use effect of the built VR scene;

[0077] S6. Simulate construction progress

[0078] Through the VR simulation system 601, the completion model of the site foundation is superimposed on the established original site model to determine the overall elevation deviation of the site and adjust the earthwork balance in the site. Through the built-in time control program 606 of the time management module 605, time control is implemented through the following code:

[0079]

[0080]

[0081] Determine the construction process and construction time, optimize the construction process based on the construction period, and ensure that the foundation construction process is completed within the construction period;

[0082] S7. Construction organization plan

[0083] Combined with the simulation construction results, the construction management module 7 is used to conduct on-site construction measurement and calculate the excavation workload before starting construction. The excavation of earthwork can be carried out only after the location of the building and structure or the site has passed the acceptance of the positioning control line. After excavation or backfilling to the corresponding elevation, the bottom surface after excavation is compacted, the cushion layer is made, the steel bars and templates are configured according to the drawings, and the relevant brickwork on the drawings is laid, and then concrete is poured to complete the foundation construction;

[0084] S8. Cost-profit accounting

[0085] Organize all the data of the foundation project, establish a work library through the work library module 801, compare the construction cost and bid quotation, select the appropriate supplier, optimize resource supply, and estimate project profit.

[0086] The steps of the method or algorithm described in this application can be directly embedded in hardware, software units executed by a processor, or a combination of the two. The software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be arranged in an ASIC, and the ASIC can be arranged in a terminal. Optionally, the processor and the storage medium can also be arranged in different components in the terminal. These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are performed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0087] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps of the functions specified in a box or multiple boxes. Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the attached claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0088] Embodiment 3:

[0089] like Figure 1-8 As shown, the embodiment of the present invention provides a foundation engineering construction planning method based on BIM technology. In S2, the model training module 305 uses an unsupervised training method to train the data extraction program 202, which is beneficial to improving the training effect when the system is used as a whole. In S4, the sketch drawing module 204 realizes its use function based on AutoCAD software, and the model building module 205 realizes its use function based on Rhi no software and Sketchup software. Rhi no software is beneficial to parameterize and finely model the surface and improve the effect of the model. Sketchup software can improve the modeling efficiency. The model rendering module 206 realizes its use function based on Lumion software, which is beneficial to shorten the rendering time and speed up the rendering process. In S7, the on-site construction measurement content includes checking and reviewing the control network, adding control piles and leveling points, measuring and setting grids, and drawing construction site topographic maps, which is convenient for users to modify the plan and arrange it according to the site conditions.

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

Claims

1. A foundation engineering construction planning system based on BIM technology, comprising a data acquisition module (1), characterized in that: The data acquisition module (1) is bidirectionally connected to the model management module (2), the data acquisition module (1) and the model management module (2) are bidirectionally connected to the central control module (3), and the central control module (3) is connected to the data transmission module (4); The data transmission module (4) is connected to a host computer (5), the host computer (5) is connected to a process simulation module (6), a construction management module (7) and a business management module (8), the construction management module (7) is connected to an earthwork engineering management module (701), a cushion engineering management module (702), a masonry engineering management module (703), a formwork engineering management module (704), a steel bar engineering management module (705) and a concrete engineering management module (706).

2. The foundation engineering construction planning system based on BIM technology according to claim 1 is characterized by: The data acquisition module (1) comprises an image capture module (101) and a point measurement module (105); the image capture module (101) is connected to a drone (102), a panoramic camera (103) and a depth camera (104); and the point measurement module (105) is connected to a total station (106), a level meter (107) and a GPS locator (108).

3. The foundation engineering construction planning system based on BIM technology according to claim 1 is characterized by: The model management module (2) comprises a data acquisition module (201) and a model generation module (203), wherein the data acquisition module (201) is connected to a data extraction program (202), and the model generation module (203) is connected to a sketch drawing module (204), a model construction module (205) and a model rendering module (206).

4. The foundation engineering construction planning system based on BIM technology according to claim 1 is characterized by: The central control module (3) comprises a central database (301), the central database (301) is connected to a trigger module (302) and a model training module (305), the trigger module (302) is connected to an elevation trigger (303) and a coordinate trigger module (304), and the model training module (305) is connected to a training set (306) and a verification set (307).

5. The foundation engineering construction planning system based on BIM technology according to claim 1 is characterized by: The data transmission module (4) comprises a wireless transceiver module (401), and the wireless transceiver module (401) is connected to a Bluetooth connection module (402) and a wireless network connection module (403).

6. The foundation engineering construction planning system based on BIM technology according to claim 1 is characterized by: The process simulation module (6) includes a VR simulation system (601), wherein the VR simulation system (601) is connected to a scenario construction module (602) and a time management module (605), wherein the scenario construction module (602) is connected to a basic establishment module (603) and a model fitting module (604), and wherein the time management module (605) is connected to a time control program (606).

7. The foundation engineering construction planning system based on BIM technology according to claim 1 is characterized by: The business management module (8) includes a work library module (801), and the work library module (801) is connected to a drawing file management module (802), a bidding quotation management module (803), a cost budget management module (804) and a resource planning management module (805).

8. A foundation engineering construction planning method based on BIM technology, characterized in that: The specific steps include: S1. Site data collection Two points are introduced from the nearby national elevation reference point by the total station (106) to the vicinity of the construction site, and are marked with steel bars. In combination with the drawings, an appropriate number of points are selected from the drawings as the boundary points of the foundation, and the coordinates of each point are obtained from the drawings. One of the two reference points introduced is used as the station of the total station (106), and the other is used as the backsight point. The boundary point coordinate drawings are used for staking out, and the laid points are marked with wooden stakes or colored flags. Points that are difficult for the total station (106) to reach are staking out by using a GPS locator (108). After the staking out is completed, the panoramic camera (103) is fixed to the bottom of the drone (102) to collect multiple panoramic images of the construction site. Thereafter, the depth camera (104) is fixed to the bottom of the drone (102) to collect multiple depth images of the construction site. After the image collection is completed, the elevation of each point is determined by a level meter (107) and recorded. S2. Establishment of site database Input the collected data and images into the central control module (3), create a worksheet through the built-in MySQL database of the central control module (3), store the collected data, and respectively create triggers for the elevation data and the coordinate data through the trigger module (302), input the relevant data of multiple other items into the model training module (305), divide the input data into a subsets through the model training module (305), use the union of a-1 subsets as the training set (306), and use the remaining subset as the verification set (307); S3. Key data extraction Input the relevant data of the construction site into the data acquisition module (201), integrate the collected data of the site through the data extraction program (202), substitute the elevation information and coordinate information of the site into the screening program according to the training result to calculate the priority of each information point, match the elevation data and the coordinate data, and sort the matched arrays by priority to obtain the array DOT[Umax+1] after priority sorting, wherein Dmax is the number of the largest array; S4. Site model construction Let k-0, k be the index of the dispatch information point in the array DOT, determine the position of the priority array in the venue, dispatch the array DOT[k], determine its continuity with other points, draw its location in the spatial layout through the sketch drawing module (204), connect the arrays to form a sketch of the venue status, import the generated sketch into the model building module (205), establish a white model of the venue status, and render it through the model rendering module (206); S5. VR scene establishment The acquired depth image and panoramic image are input into the VR simulation system (601), and the focal length is respectively focused on a target area through the basic establishment module (603) to generate multiple multi-focus images. The enhanced differential evolution method is used to obtain the optimal block size of each multi-focus image, and the multi-focus image is segmented, and only one target area is retained in each part. Each part of each segmented multi-focus image is evaluated by an image clarity evaluation function, and the key points of the image are detected. In combination with the key points of each image, a mask image of the multi-focus image is established, and a Gaussian pyramid is made for the mask image of the multi-focus image. Starting from the starting image with the lowest resolution, each layer is spliced ​​to obtain a synthesized high-definition image. The high-definition image is used as a texture and a white film for fitting through the model fitting module (604), and the site scene is established in combination with the rendered model; S6. Simulate construction progress Through the VR simulation system (601), the completion status model of the site foundation and the established original site model are superimposed to determine the overall elevation deviation of the site, adjust the earthwork balance in the site, and determine the construction process and construction time through the built-in time control program (606) of the time management module (605). Combined with the construction period, the construction process is optimized to ensure that the foundation construction process is completed within the construction period; S7. Construction organization plan Combined with the simulation construction results, the construction management module (7) conducts on-site construction measurement and calculates the excavation workload before starting construction. The excavation of earthwork can be carried out only after the location of the building, structure or site has passed the acceptance of the positioning control line. After excavation or backfilling to the corresponding elevation, the excavated bottom surface is compacted, a cushion layer is made, steel bars and formwork are configured according to the drawings, and the relevant brickwork on the drawings is laid, and then concrete is poured to complete the foundation construction; S8. Cost-profit accounting Organize all the data of the foundation project as a whole, establish a work library through the work library module (801), compare the construction cost with the bid quotation, select the appropriate supplier, optimize the resource supply, and estimate the project profit.

9. The method for foundation engineering construction planning based on BIM technology according to claim 8 is characterized by: In S2, the model training module (305) uses an unsupervised training method to train the data extraction program (202), in S4, the sketch drawing module (204) implements its use function based on AutoCAD software, the model building module (205) implements its use function based on Rhino software and Sketchup software, and the model rendering module (206) implements its use function based on Lumion software.

10. The method for foundation engineering construction planning based on BIM technology according to claim 8, characterized in that: In S7, the on-site construction measurement includes checking and verifying the control network, adding control piles and leveling points, measuring and setting up grids, and drawing a topographic map of the construction site.

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