A Revit model construction method and system based on subway depot family library

Abstract

This invention provides a Revit model construction method and system based on a subway depot family library, comprising: hierarchically dividing depot facilities and equipment using a line classification method; parametrically forming families of depot facilities and equipment at each level using family templates; testing the usability of depot facility and equipment families at each level, and storing the tested families in a hierarchical family library file to form a Revit depot family library; and calling the Revit depot family library to form a 3D model of the depot according to actual engineering needs. This method comprehensively analyzes and classifies depot families, proposes a parametric family creation process, systematically studies and constructs a standardized depot family library based on Revit software, improves the modeling efficiency of depot information models, and facilitates the promotion of BIM-based forward design for depots.

Description

Technical Field

[0001] The present invention relates to the field of rail transit BIM technology, and in particular to a Revit model construction method and system based on a subway depot family library. Background Art

[0002] Building Information Modeling (BIM technology for short) is an engineering data model based on three-dimensional information technology that integrates various relevant digital information of construction projects. It runs through the entire life cycle of the project and guides the planning, design, construction and operation management of the project. In the process of BIM model construction, the family is the core content, the foundation of the model, and the carrier of various information data.

[0003] BIM technology originated from the construction industry and has emerged in the rail transit industry in recent years. Some scholars have conducted many studies on the application of BIM family libraries in the urban rail industry. In a broad sense, urban rail transit refers to urban public passenger transportation systems guided by various forms of guide rails, covering large, medium and small-capacity electric traction rail transit built in cities. As the maintenance base for urban rail system vehicles, the vehicle base generally has an investment of 1 billion to 2 billion yuan. The project scale is large, the interfaces of various disciplines are complex, and it is usually affected by site selection and boundary conditions. The design cycle is short and the construction period is tight. Therefore, in order to achieve the purpose of quickly building the vehicle base engineering information model, it is particularly important to establish a vehicle base family library. At present, the Revit family libraries developed by software manufacturers on BIM basic software mainly include Revit software built-in family library, housing and urban and rural construction product BIM large database, family library master, Hongye family library, component dock, Zhulong.com family library, etc., but there is no standardized family library for vehicle depots in the corresponding soft BIM software.

[0004] Therefore, due to the lack of a standardized family library for complete vehicle depot projects, the application of BIM technology in urban rail transit vehicle depot projects is still in the stage of continuous exploration, with problems such as slow 3D modeling speed, poor coordination among various professional designs, and low modeling accuracy. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of low modeling accuracy and poor coordination effect in the application of existing BIM technology in urban rail transit vehicle depot projects, and to provide a Revit model construction method and system based on a subway vehicle depot family library. This method provides a basis for the high-precision modeling application of BIM technology in urban rail transit vehicle depot projects by defining a standard vehicle depot parameter family library.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] A Revit model construction method based on a subway depot family library, the method comprising:

[0008] Use line classification method to classify the facilities and equipment of the vehicle depot;

[0009] Select a family template to parameterize the depot facilities and equipment at each level into a family;

[0010] Test the availability of each level of vehicle depot facility and equipment families, and store the vehicle depot facility and equipment families that pass the test in the level family library file to form a Revit vehicle depot family library;

[0011] According to actual engineering requirements, the Revit vehicle depot family library is called to form a three-dimensional model of the vehicle depot.

[0012] According to a specific implementation, in the above-mentioned Revit model construction method based on the subway vehicle depot family library, the line classification method is used to hierarchically divide the vehicle depot facilities and equipment, including:

[0013] Divide the depot facilities and equipment into eight first-level categories, and find multiple sub-level categories corresponding to each of the first-level categories, wherein different-level categories are classified according to a subordinate relationship, and categories in the same branch are classified according to a parallel relationship;

[0014] The eight first-level categories are: lines and stations, buildings, vehicles, ventilation and air-conditioning, water supply and drainage and fire protection, power and lighting, process equipment, and other systems.

[0015] According to a specific implementation, in the above-mentioned Revit model construction method based on the subway vehicle depot family library, the method further includes: after hierarchical division of the vehicle depot facilities and equipment by using the line classification method, a coding step is performed,

[0016] The encoding step comprises:

[0017] For each vehicle depot facility and equipment, determine the hierarchical category corresponding to the vehicle depot facility and equipment, find the upper category to which the vehicle depot facility and equipment belongs, and encode the equipment according to each level of category, wherein the codes of each level of category are separated by separators.

[0018] According to a specific implementation, in the above-mentioned Revit model construction method based on the subway vehicle depot family library, the selection of a family template to parameterize the vehicle depot facilities and equipment at each level into a family includes:

[0019] Select the corresponding family template according to the geometric characteristics of the depot facilities and equipment at each level;

[0020] Based on the selected family template, determine the corresponding reference plane;

[0021] Respectively obtain geometric parameters of the depot facilities and equipment at each level, and draw geometric bodies based on the reference plane and the geometric parameters;

[0022] The family type and family characteristics of the parametric geometric body are set to obtain a parametric family of vehicle depot facilities and equipment.

[0023] According to a specific implementation, in the above-mentioned Revit model construction method based on the subway depot family library, the corresponding family template is selected according to the geometric characteristics of the depot facilities and equipment at each level, including: selecting a conventional family defined based on a metric conventional model (wherein the conventional family is a formed building commonly used in this field: piles, columns, etc.), defining a fusible cable trench based on a metric structural frame-beams and supports, and defining a linear component based on a metric conventional model of lines.

[0024] According to a specific implementation, in the above-mentioned Revit model construction method based on the subway depot family library, the step of respectively obtaining geometric parameters of the depot facilities and equipment at each level and drawing a geometric body based on the reference plane and the geometric parameters includes:

[0025] Step 31, collect various drawings required for family creation, including the plan, elevation, section and isometric drawings of facility and equipment objects;

[0026] Step 32, analyzing the geometric shape of the facility equipment according to the drawings, and then determining the geometric shape characteristic parameters;

[0027] Step 33, drawing a geometric shape according to the geometric shape feature parameters, and constraining it to the reference plane and reference line.

[0028] According to a specific implementation, in the above-mentioned Revit model construction method based on the subway vehicle depot family library, the availability of the vehicle depot facility equipment family at each level is tested, including:

[0029] The Revit-based testing tool verifies the variable performance of the vehicle depot facility equipment family at each level, and verifies the integrity of the family file data with qualified variable performance based on the delivery standards.

[0030] According to a specific implementation, in the above-mentioned Revit model construction method based on the subway vehicle depot family library, the integrity of the family file data with qualified parametric performance based on the delivery standard is verified, including:

[0031] Verify whether the family file data includes: the version number of the family file; an introduction to the family category and family type; a description of the meaning of the family's main type parameters, instance parameters, and shared parameters; a description of the placement process of the family in the project file and a functional description of the family controls.

[0032] Another aspect of the present invention provides a Revit model building system based on a subway depot family library, characterized in that it includes a processor, a network interface and a memory, the processor, the network interface and the memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the above-mentioned Revit model building method based on the subway depot family library.

[0033] Compared with the prior art, the invention has the following beneficial effects:

[0034] The embodiment of the present invention divides the vehicle depot facilities and equipment into levels by adopting the line classification method; selects a family template to parameterize the vehicle depot facilities and equipment of each level into a family; tests the availability of the vehicle depot facilities and equipment family of each level, and stores the vehicle depot facilities and equipment families that pass the test in a hierarchical family library file to form a Revit vehicle depot family library; finally, the Revit vehicle depot family library is called according to the actual project to draw a high-precision vehicle depot three-dimensional model; the method comprehensively analyzes and classifies the vehicle base family, and proposes a parametric family creation process; based on the Revit software, a standardized family library of the vehicle base is systematically studied and constructed; the modeling efficiency of the vehicle base information model is improved, which is conducive to promoting the BIM forward design of the vehicle base. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A flow chart of a method for constructing a Revit model based on a subway depot family library according to an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of the classification of the vehicle base family library according to an embodiment of the present invention;

[0037] Figure 3 is a schematic diagram of a family creation process according to an embodiment of the present invention;

[0038] Figure 4 is a schematic diagram of a line and station family model according to an embodiment of the present invention;

[0039] Figure 5 is a schematic diagram of a house building model family according to an embodiment of the present invention;

[0040] Figure 6 is a schematic diagram of a family of electromechanical systems according to an embodiment of the present invention;

[0041] Figure 7 is a schematic diagram of a process equipment family according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of a vehicle base modeling application according to an embodiment of the present invention. Figure 1 ;

[0043] Fig. 9 This is a schematic diagram of a vehicle base modeling application according to an embodiment of the present invention. Figure 2 ;

[0044] Fig.10 The present invention is a block diagram of the Revit model building system based on the subway depot family library described in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0046] Example 1

[0047] Figure 1 A Revit model construction method based on a subway depot family library according to an exemplary embodiment of the present invention is shown, and the method includes:

[0048] S1. Use line classification method to classify the facilities and equipment of the depot;

[0049] S2. Select a family template to parameterize the facilities and equipment of each level of the depot into a family;

[0050] S3. Test the availability of the vehicle depot facility and equipment families at each level, and store the vehicle depot facility and equipment families that pass the test in the level family library file to form a Revit vehicle depot family library;

[0051] S4. According to actual engineering requirements, the Revit vehicle depot family library is called to form a three-dimensional model of the vehicle depot.

[0052] In a possible implementation, S1 specifically includes: classifying vehicle base facilities and equipment using a line classification method. Based on the line classification method, the professional facilities and equipment of the vehicle base are divided into eight levels. Categories at different levels are classified according to a subordinate relationship, and categories in the same branch are classified according to a parallel relationship. The first level of vehicle base equipment and facilities is divided into the following categories: 01 lines and stations, 02 buildings, 03 vehicles, 04 ventilation and air conditioning, 05 water supply and drainage and fire protection, 06 power and lighting, 07 process equipment, 08 other systems, such as Figure 2 shown.

[0053] Among them, the vehicle base is the operation, maintenance, material and logistics support base of the subway system, including the vehicle depot (parking lot), comprehensive maintenance center, material warehouse, training center and other supporting facilities such as production, living and office. Its facilities are various civil construction facilities set up to ensure the normal and safe operation of the vehicle base, mainly including: buildings, tunnels, bridges and culverts, roadbeds, roadbeds, roads, ancillary facilities, etc. Its equipment is various electromechanical systems set up to ensure the normal and safe operation of the vehicle base, mainly including: vehicles, water supply and drainage and fire protection, ventilation and air conditioning, power and lighting, escalators, tools and equipment, process equipment, power supply, weak current, etc.

[0054] It is understandable that the vehicle base engineering has many specialties, complex composition, and a large number of components, and classification is difficult to a certain extent; in order to better achieve collaboration and facilitate unified management, reasonable classification is very important. Therefore, in this embodiment, the characteristics of the vehicle depot equipment are studied and analyzed to form equipment classification categories that can be collaboratively managed.

[0055] In a possible implementation, the above S1 further includes: after the vehicle depot facilities and equipment are hierarchically divided by the line classification method, a coding step is performed,

[0056] The encoding step comprises:

[0057] For each vehicle depot facility and equipment, determine the hierarchical category corresponding to the vehicle depot facility and equipment, find the upper category to which the vehicle depot facility and equipment belongs, and encode the equipment according to each level of category, wherein the codes of each level of category are separated by separators.

[0058] Specifically, the family components classified by the vehicle base are huge and complex. In order to clearly represent the contents of the family library and facilitate identification and communication, the family naming should be concise and strictly standardized. The naming rules of the embodiment of this application refer to the classification and engineering practice of the vehicle base family, innovatively propose the level of professional equipment and facilities of the vehicle base, and use the line classification method to classify and code the facilities and equipment of the urban rail transit vehicle base, as shown in the following table.

[0059] Table 1 Vehicle base equipment and facility levels and codes

[0060]

[0061] Note: The above table is a partial list of levels and not all of them are shown.

[0062] The created family should be named according to the vehicle base equipment and facility level and code table, and the names of each level should be separated by "_", for example: line_track_station trackbed_roadbed_soil roadbed, and the corresponding code is "0101010101".

[0063] In one possible implementation, Figure 3 As shown, the above S2 specifically includes:

[0064] S21. Preliminary settings for family creation

[0065] 1) Select a suitable family template and define the family category, for example, define a regular family based on a metric regular model, define a fusible drainage ditch and cable trench and trough based on a metric structural frame-beam and support, and define a linear component based on a line-based metric regular model;

[0066] 2) Define the insertion point and lock the reference plane of the insertion point;

[0067] 3) Layout reference lines and reference planes;

[0068] 4) Preset family type and family parameters;

[0069] 5) Add dimensioning and associate parameters: Select appropriate reference lines or reference planes to mark dimensions and associate them with corresponding geometric parameters.

[0070] S22. Drawing of family geometric shapes

[0071] 1) The modeling geometry of the facility and equipment family shall be based on the drawing dimensions provided by the equipment supplier. Collect all kinds of drawings required for family creation, including the plan, elevation, section and isometric views of the facility and equipment objects.

[0072] 2) Analyze the geometric shape of facility and equipment objects, determine the characteristic parameters of the object's geometric shape, and clarify the geometric parameter type.

[0073] 3) Draw geometric shapes (2D / 3D) and constrain them to the corresponding reference planes. Load nested families and place additional controls, connectors, etc. as needed.

[0074] S23. Family parameterization settings

[0075] Associate family parameters, adjust parameter values ​​and models, and determine family behavior to verify parametric performance (including geometric and non-geometric parameters).

[0076] S24. Family related property settings

[0077] Family subcategory, visibility, view, save state, uniformity settings (scaling of each view of the family, visual style, clearing unused items, etc.).

[0078] S25. Set family type

[0079] Add other types of families by copying and modifying the parameter values ​​of the preset family types. If the number of family types is ≥ 6, create a type catalog to implement family type settings.

[0080] S26. Save family file for testing

[0081] A family library folder system is established according to the level classification. The hierarchical relationship of the system folders is the same as the facility equipment categories, and the family files are saved in the corresponding hierarchical family library folders.

[0082] In this embodiment, a standardized creation process of a vehicle base family is proposed based on Revit software.

[0083] In a possible implementation, in the above S3, the availability of the vehicle depot facility equipment family at each level is tested, specifically including:

[0084] The Revit-based testing tool verifies the variable performance of the vehicle depot facility equipment family at each level, and verifies the integrity of the family file data with qualified variable performance based on the delivery standards.

[0085] Specifically, the family file delivered after testing contains the user manual of the family, which mainly includes the following contents: version number of the family file; introduction to family categories and family types; description of the meaning of the main type parameters, instance parameters and shared parameters of the family; description of the placement process of the family in the project file; and functional description of the family controls.

[0086] Furthermore, the vehicle base family library will be constructed by testing completed lines and stations, buildings, vehicles, ventilation and air conditioning, water supply and drainage, fire protection, power and lighting, process equipment and other systems.

[0087] Among them, Figure 4 As shown in the figure, in the line and station family model, the rails are stretched to form a parametric family; sleepers and fasteners are made into slightly more complex fixed families using stretching, fusion, shearing and other functions. Tracks are relatively complex fixed families using stretching, fusion, lofting, fusion, lofting, shearing and other functions. The car stopper integrates the rails, bolts, car stop parts and other components to form a fixed family. The road parametric family can realize parametric modeling of road width, length, pavement material (concrete or asphalt) and pavement markings. The drainage ditch is modeled by fusion lofting to realize the parameterization of ditch width, wall thickness, length and slope. The roadbed is parametrically modeled, and the roadbed length can be defined.

[0088] like Figure 5As shown in the figure, in the housing building family model, the cap and pile are formed into parametric families by stretching, and the single pile, double pile, triple pile, quadruple pile and multi-pile cap families are completed; the crane beam is formed into the crane beam family by means of stretching, fusion, shearing, etc., by embedding bolt holes, ribs, support pads, column connectors, etc. The steel and truss are formed into variable section H-shaped steel family and truss family by stretching, lofting and fusion; the grid is formed into the grid with parameterized length and width by using the volume model to create basic units as embedded families. The cable trench is formed into the cable trench family by using the line-based metric conventional model and stretching. The cable well is made into a fixed family by stretching, array, etc., and the length of the cable well and the number of brackets are adjusted parametrically. The strong and weak electric pipe row is formed into a parametric family by stretching. The column inspection pit is formed into the inspection pit family by using stretching, lofting, array, etc. The inspection pit foundation, steps, small columns and tracks are integrated into the inspection pit family by stretching. The working platform is formed into the working platform parametric family by stretching. Refer to the basic equipment data of the equipment supplier's construction drawings, and use commands such as stretching, fusion, shearing, and lofting to complete the production of basic equipment families such as cleaning areas, static load test benches, weighing equipment, wheel lathes, car washers, and fixed-stand car machines.

[0089] like Figure 6 As shown, for electromechanical engineering, the family libraries that come with conventional systems and the Revit family library plug-ins on the market are relatively mature. Common facilities for electromechanical engineering in vehicle bases are sorted out. Ventilation and air conditioning include cold and heat source equipment, heating equipment, air conditioning equipment, ventilation equipment, wind systems, water systems and others. Water supply and drainage and fire protection include water supply accessories, drainage accessories, valves, equipment, fire protection, pipes, brackets and outdoor accessories. Power and lighting include power distribution systems, bridge systems and grounding systems. According to the characteristics of vehicle base projects, parametric families are established through stretching, fusion and shearing to check for omissions. In the contact network and signal system family model, the production of signal machines, switch machines, contact network pillar foundations, and contact network wire foundation families is completed by using commands such as stretching, fusion, shearing, and lofting.

[0090] like Figure 7 As shown in the figure, for vehicles and process equipment, various geometric information drawings required for family creation are collected from vehicle manufacturers and equipment suppliers, including the plan, elevation, section and isometric views of facility equipment objects. After completing the modeling of the corresponding equipment using 3D software such as Sketchup and Solidworks, the model is imported into Revit to form a vehicle and process equipment family.

[0091] In a further embodiment of the present invention, the vehicle base standardized family library established in the embodiment of the present invention is applied to the BIM modeling of a certain overseas vehicle base project (wherein, the design scale of a certain overseas vehicle base is 3 rows for large frame repair, 2 rows for scheduled repair, 5 rows for biweekly and monthly inspection, and 20 rows for parking and train inspection. The main units include the main maintenance plant, biweekly and monthly inspection warehouse, parking and train inspection warehouse, material warehouse, machine adjustment and engineering garage, car wash garage, comprehensive maintenance workshop, OCC, etc., with a total construction area of ​​about 78,000 square meters;) including:

[0092] Using Revit software, load the vehicle base standardized family library, select appropriate facilities and equipment in the family library for import according to the equipment and facility models, adjust and modify the relevant parameters, and then assemble each part to build a complete vehicle base BIM assembly model, including the yard, track, road, pipeline, building, structure, ventilation and air conditioning, water supply and drainage, fire protection, dynamic lighting and other three-dimensional models. The application library, maintenance main workshop and vehicle base assembly BIM models are as follows Figure 8 , 9 shown.

[0093] Another aspect of the present invention, as Fig.10 As shown, a fusion system is also provided, which includes a processor, a network interface and a memory, wherein the processor, the network interface and the memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the above-mentioned cutting and fusion method.

[0094] In the embodiments of the present invention, the processor may be an integrated circuit chip having the ability to process signals. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0095] The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present invention can be directly embodied as a hardware decoding processor for execution, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The processor reads the information in the storage medium and completes the steps of the above method in combination with its hardware.

[0096] The storage medium may be a memory, which may be, for example, a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memory.

[0097] Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.

[0098] The volatile memory may be a random access memory (RAM) which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDRSDRAM), enhanced synchronous DRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus DRAM (DRRAM).

[0099] The storage media described in the embodiments of the present invention are intended to include, but are not limited to, these and any other suitable types of memory.

[0100] It should be understood that the system disclosed in the present invention can be implemented in other ways. For example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the communication connection between modules can be through some interfaces, indirect coupling or communication connection of servers or units, which can be electrical or other forms.

[0101] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each module may exist physically separately, or two or more modules may be integrated into one processing unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional unit.

[0102] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Revit model construction method based on a subway depot family library, characterized in that: The method comprises: The vehicle depot facilities and equipment are hierarchically divided by using a line classification method; the vehicle depot facilities and equipment are hierarchically divided by using a line classification method, including: dividing the vehicle depot facilities and equipment according to eight first-level categories, and finding multiple sub-level categories corresponding to each of the first-level categories, wherein different levels of categories are classified according to a subordinate relationship, and categories of the same branch are classified according to a parallel relationship; the eight first-level categories are: lines and stations, buildings, vehicles, ventilation and air conditioning, water supply and drainage and fire protection, power and lighting, process equipment, and other systems; Selecting a family template to parameterize the vehicle depot facilities and equipment at each level into a family; the selecting a family template to parameterize the vehicle depot facilities and equipment at each level into a family includes: selecting a corresponding family template according to the geometric characteristics of the vehicle depot facilities and equipment at each level; determining a corresponding reference plane based on the selected family template; respectively obtaining geometric parameters of the vehicle depot facilities and equipment at each level, and drawing a geometric body based on the reference plane and the geometric parameters; setting the family type and family characteristics of the parameterized geometric body to obtain a parameterized family of vehicle depot facilities and equipment; The selecting of corresponding family templates according to the geometric characteristics of the depot facilities and equipment at each level includes: selecting to define a conventional family based on a metric conventional model, defining a fusible cable trench based on a metric structural frame-beam and support, and defining a linear component based on a line-based metric conventional model; The step of respectively obtaining geometric parameters of the vehicle depot facilities and equipment at each level and drawing a geometric body based on the reference plane and the geometric parameters includes: Step 31, collect various drawings required for family creation, including plan, elevation, section and isometric drawings of facility and equipment objects; Step 32, analyzing the geometric shape of the facility equipment according to the drawings, and then determining the geometric shape characteristic parameters; Step 33, drawing a geometric shape according to the geometric shape feature parameters, and constraining it to the reference plane and reference line; Test the availability of each level of vehicle depot facility and equipment families, and store the vehicle depot facility and equipment families that pass the test in the level family library file to form a Revit vehicle depot family library; According to actual engineering requirements, the Revit vehicle depot family library is called to form a three-dimensional model of the vehicle depot.

2. The Revit model construction method based on the subway depot family library according to claim 1 is characterized in that: The method further comprises: a coding step after hierarchical division of the depot facilities and equipment by using the line classification method, The encoding step comprises: For each vehicle depot facility and equipment, determine the hierarchical category corresponding to the vehicle depot facility and equipment, find the upper category to which the vehicle depot facility and equipment belongs, and encode the equipment according to each level of category, wherein the codes of each level of category are separated by separators.

3. The Revit model construction method based on the subway depot family library according to claim 1 is characterized in that: The test is to test the availability of each level of depot facilities and equipment, including: The Revit-based testing tool verifies the variable performance of the vehicle depot facility equipment family at each level, and verifies the integrity of the family file data with qualified variable performance based on the delivery standards.

4. The Revit model construction method based on the subway depot family library according to claim 3 is characterized in that: The integrity of the family file data with qualified parameter variation performance verified based on the delivery standard includes: Verify whether the family file data includes: the version number of the family file; an introduction to the family category and family type; a description of the meaning of the family's main type parameters, instance parameters, and shared parameters; a description of the placement process of the family in the project file and a functional description of the family controls.

5. A Revit model building system based on a subway depot family library, characterized in that: It includes a processor, a network interface and a memory, wherein the processor, the network interface and the memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the Revit model construction method based on the subway depot family library as described in any one of claims 1-4.

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