Smoke control design method based on BIM building model, computer device and computer readable storage medium

Abstract

The application provides a smoke prevention design method based on a BIM building model, a computer device and a computer readable storage medium, and comprises the following steps: identifying the BIM building model, and the identified content comprises the building type, the building height, the antechamber type and the stairwell type; if the type of the stairwell is a smoke prevention stairwell, the building height is judged; if the building height is greater than the critical height of the corresponding building type, pressurized air supply is adopted in the antechamber and the smoke prevention stairwell; if the building height is less than or equal to the critical height of the corresponding building type, it is judged whether the antechamber is a three-in-one antechamber; if yes, the smoke prevention mode of the antechamber and the stairwell is designed according to a first preset rule; and if no, the smoke prevention mode of the antechamber and the stairwell is designed according to a second preset rule. When the stairwell is a smoke prevention stairwell, the three-in-one antechamber is firstly designed for smoke prevention, and a smoke prevention design judgment rule used independently is formulated, so that the smoke prevention type of the three-in-one antechamber and the stairwell can be accurately designed.

Description

Technical Field

[0001] This invention relates to the field of building smoke control design, specifically to a smoke control design method, computer device, and computer-readable storage medium based on a BIM building model. Background Technology

[0002] Stairwells and anterooms, as primary circulation spaces in buildings, serve as crucial escape routes for people and auxiliary attack routes for firefighters. In architectural design, the design of smoke control systems for stairwells and their anterooms is both a key focus and a challenge. Existing building smoke control design methods utilize computer software and the "Technical Standard for Building Smoke Control and Exhaust Systems" to determine the smoke exhaust methods for anterooms and stairwells. However, current smoke control design rules consider anterooms and stairwells separately. In some special cases, the smoke exhaust methods of both anterooms and stairwells need to be considered holistically. For example, when a stairwell is a smoke-proof stairwell, the smoke control design criteria for a combined three-in-one anteroom differ from those for other anterooms. In such cases, there are certain mutual constraints between the smoke exhaust methods of the anteroom and stairwell. Therefore, existing building smoke control design methods cannot truly meet the relevant code requirements. Summary of the Invention

[0003] The primary objective of this invention is to provide a smoke control design method based on a BIM building model that prioritizes smoke control design rules for three-in-one anterooms, which fall under special circumstances.

[0004] A second objective of this invention is to provide a computer device for implementing the above-described smoke control design method based on a BIM building model.

[0005] A third objective of this invention is to provide a computer-readable storage medium for implementing the above-described smoke control design method based on a BIM building model.

[0006] To achieve the aforementioned first objective, this invention provides a smoke control design method based on a BIM building model, comprising: Step S1: Identifying the BIM building model, including building type, building height, vestibule type, and stairwell type; if the stairwell type is a smoke-proof stairwell, further determining whether the building is a public building with a height greater than 50m or a residential building with a height greater than 100m; Step S2: If the building is a public building with a height greater than 50m or a residential building with a height greater than 100m, pressurized air supply is adopted in both the vestibule and the smoke-proof stairwell; Step S3: If the building is neither a public building with a height greater than 50m nor a residential building with a height greater than 100m, determining whether the vestibule is a three-in-one vestibule; Step S4: If the vestibule is a three-in-one vestibule, designing the smoke control method for the vestibule and stairwell according to a first preset rule; if the vestibule is not a three-in-one vestibule, designing the smoke control method for the vestibule and stairwell according to a second preset rule.

[0007] Therefore, when the stairwell is a smoke-proof stairwell, the criteria for judging the smoke control design of the three-in-one vestibule differ from those of other vestibules. First, it is necessary to determine whether the vestibule is a three-in-one vestibule. Once it is determined to be a three-in-one vestibule, smoke control design can be carried out on the three-in-one vestibule first. Then, for non-three-in-one vestibules, the common judgment rules can be used to save comparison time. At the same time, for complex situations such as three-in-one vestibules, separate smoke control design judgment rules can be formulated to prevent errors in the selection of smoke control methods for three-in-one vestibules.

[0008] Further according to the above scheme, the first preset rule includes: if step S3 confirms that the vestibule is a three-in-one vestibule, then it is further determined whether the two stairwells connected to the vestibule simultaneously have natural ventilation conditions; if either of the two stairwells does not have natural ventilation conditions, then both the three-in-one vestibule and the stairwell adopt pressurized air supply method; if both stairwells connected to the three-in-one vestibule simultaneously have natural ventilation conditions, then it is further determined whether a pressurized air supply vent can be installed above the door of the three-in-one vestibule or on the wall directly opposite the entrance of the three-in-one vestibule; if so, then the three-in-one vestibule adopts pressurized air supply, and the stairwell adopts natural ventilation method; otherwise, both the three-in-one vestibule and the stairwell adopt the pressurized air supply method.

[0009] Therefore, when the anteroom type is a three-in-one anteroom, it is necessary to further consider whether the two stairwells connected to the three-in-one anteroom simultaneously have natural ventilation conditions; and when the two stairwells connected to the three-in-one anteroom simultaneously have natural ventilation conditions, it is necessary to further determine whether pressurized air supply outlets can be installed above the door of the three-in-one anteroom or on the wall directly opposite the entrance of the three-in-one anteroom, etc., to ensure that the smoke prevention methods of the anteroom and stairwell meet the prescribed requirements.

[0010] Further according to the above scheme, the second preset rule includes: if step S3 confirms that the vestibule is not a three-in-one vestibule, then it is further determined whether the vestibule is a shared vestibule; if the vestibule is not a shared vestibule, then it is determined whether the vestibule is fully open or has two windows facing different directions; if so, then the stairwell is not equipped with a smoke prevention system.

[0011] Further according to the above scheme, the second preset rule also includes: if step S3 confirms that the vestibule is not a three-in-one vestibule, and further confirms that the vestibule is not a shared vestibule, then if the vestibule is neither fully open nor has two windows facing different directions, then it is further determined whether the stairwell has natural ventilation conditions; if the stairwell has natural ventilation conditions, then it is further determined whether the vestibule can adopt natural ventilation; if the vestibule can adopt natural ventilation, then both the vestibule and the stairwell adopt natural ventilation.

[0012] Therefore, when the vestibule type is not a three-in-one vestibule, it is also necessary to take into account whether the non-shared vestibule is fully open or has two windows facing different directions. When the non-shared vestibule is neither fully open nor has two windows facing different directions, it is also necessary to further determine whether the stairwell has natural ventilation conditions, and then select the smoke prevention method for the vestibule and stairwell.

[0013] Further according to the above scheme, if step S3 confirms that the vestibule is not a three-in-one vestibule, and further confirms that the vestibule is not a shared vestibule, then if the vestibule is neither fully open nor has two windows facing different directions, then it is further determined whether the stairwell has natural ventilation conditions; if the stairwell has natural ventilation conditions, then it is further determined whether the vestibule can adopt natural ventilation; if the vestibule cannot adopt natural ventilation, then it is further determined whether a pressurized air supply vent can be installed above the door of the vestibule or on the wall directly opposite the entrance of the vestibule; if so, then the vestibule adopts pressurized air supply and the stairwell adopts natural ventilation; if not, then both the vestibule and the stairwell adopt pressurized air supply.

[0014] Therefore, when the stairwell does not have natural ventilation, it is necessary to consider whether pressurized air supply outlets can be installed above the door of the vestibule or on the wall directly opposite the entrance of the vestibule, and ensure that the pressurized air supply method meets the requirements.

[0015] Further according to the above scheme, if step S3 confirms that the vestibule is not a three-in-one vestibule, and further confirms that the vestibule is not a shared vestibule, then if the vestibule is neither fully open nor has two windows facing different directions, then it is further determined whether the stairwell has natural ventilation conditions; if the stairwell does not have natural ventilation conditions, then it is further determined whether the vestibule can be naturally ventilated; if the vestibule cannot be naturally ventilated, then it is further determined whether the vestibule is an independent vestibule with only one door; if the vestibule is an independent vestibule with only one door, then the stairwell adopts a pressurized air supply method; if the vestibule is not an independent vestibule with only one door, then both the vestibule and the stairwell adopt a pressurized air supply method.

[0016] Therefore, when the stairwell does not have natural ventilation, it is necessary to further determine whether the vestibule can be naturally ventilated. If the vestibule cannot be naturally ventilated, it is also necessary to further determine whether the vestibule is an independent vestibule with only one door. Different ventilation methods should be selected for different situations to ensure that the pressurized air supply method meets the prescribed requirements.

[0017] Further according to the above scheme, after completing step S4, the smoke control design method also includes step S5: calculating the air volume for the anteroom system and / or staircase system.

[0018] Therefore, calculating the air volume of the anteroom system and / or staircase system can lay a solid foundation for the selection of subsequent equipment.

[0019] Further according to the above scheme, after performing step S5, the smoke control design method also includes step S6: outputting the smoke control design information of the building model, and automatically and / or manually modifying the BIM building model using the design information.

[0020] Therefore, it is evident that automatically modifying the BIM building model based on smoke control design information and directly outputting a building model with smoke control design can lay the foundation for subsequent smoke control engineering construction; manually modifying the BIM building model can correct errors or adjust the BIM building model as needed.

[0021] To achieve the second objective described above, the present invention provides a computer device comprising a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, it implements the steps of the smoke control design method based on the BIM building model as described above.

[0022] To achieve the third objective mentioned above, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when running, implements the steps of the smoke control design method based on BIM building model described above. Attached Figure Description

[0023] Figure 1 This is a flowchart of an embodiment of the method for verifying architectural drawings according to the present invention.

[0024] Figure 2 This is the first flowchart of the stairwell and anteroom smoke control selection method of the architectural drawing verification method of the present invention.

[0025] Figure 3 This is the second flowchart of the method for verifying architectural drawings of the present invention, which describes the selection of smoke control systems for stairwells and anterooms.

[0026] Figure 4 This is the third flowchart of the smoke control selection for stairwells and anterooms in an embodiment of the method for verifying architectural drawings of the present invention.

[0027] Figure 5 This is the fourth flowchart of the smoke control selection for stairwells and anterooms in an embodiment of the method for verifying architectural drawings of the present invention.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0029] Example of smoke control design method based on BIM building model:

[0030] The method in this embodiment is implemented using a computer program, for example, by running a computer program on a computer. When the computer program is run, the following steps can be executed.

[0031] See Figure 1 The smoke control design method based on BIM building models first executes step S1, where the computer identifies the BIM building model. The identified information includes building type, building height, vestibule type, and stairwell type. If the stairwell type is a smoke-proof stairwell, it further determines whether the building is a public building with a height greater than 50m or a residential building with a height greater than 100m. Specifically, the BIM building model of the building corresponding to the project in this embodiment is collected and organized to obtain the building's nature, number of floors, floor height, building height, number of stairwells and vestibules, number of evacuation doors in stairwells and vestibules, and evacuation door size parameters, etc.

[0032] Combination Figures 2 to 5 The following process is used to traverse each stairwell in this project: determine the stairwell type F1, determine the nature and type of each stairwell and vestibule based on the BIM building model, if the stairwell is an open stairwell, proceed to the open stairwell process F101; if the stairwell is an enclosed stairwell, proceed to the enclosed stairwell process F103; if the stairwell is a smoke-proof stairwell, proceed to the smoke-proof stairwell process F102.

[0033] Open stairwell procedure F101: There are no requirements for smoke prevention methods in the vestibule and stairwell of an open stairwell.

[0034] Enclosed stairwell procedure F103: Determine if the stairwell has natural ventilation conditions F2; ​​specifically, if the enclosed stairwell is a single-level basement and does not share a basement level with any above-ground stairwell, then the effective area of ​​the first floor of the stairwell should be no less than 1.2m². 2 The stairwell must have operable exterior windows or direct evacuation doors to the outside. If so, the stairwell will use natural ventilation; otherwise, it will use mechanical pressurized air supply. If the stairwell is not a single-story basement and does not share a space with above-ground stairwells, the area of ​​the highest point of the stairwell must be at least 1.0m². 2 The building may have operable exterior windows or openings; or, when the building height exceeds 10m, the exterior walls of the stairwell may have openings with a total area of ​​not less than 2.0m² every 5 floors. 2 There should be operable windows or openings, and the spacing between windows or openings should not exceed 3 floors. If so, natural ventilation should be used; otherwise, mechanical pressurization should be used.

[0035] Execute step S2. If the building is a public building with a height greater than 50m or a residential building with a height greater than 100m, pressurized air supply is used in both the anteroom and the smoke-proof stairwell. Specifically, the smoke-proof stairwell process F102: Identify the building type and height F3, determine whether the building is a public building greater than 50m or a residential building greater than 100m F4. If so, mechanical pressurized air supply is used in the stairwell and its anteroom; otherwise, proceed to the next step.

[0036] Then, step S3 is executed. If the building is not a public building with a height greater than 50m or a residential building with a height greater than 100m, it is determined whether the vestibule is a three-in-one vestibule F5. In this embodiment, the three-in-one vestibule is a vestibule shared by a common vestibule and a fire elevator vestibule.

[0037] Next, step S4 is executed. If the anteroom is a three-in-one anteroom, the smoke prevention method for the anteroom and stairwell is designed according to the first preset rule; if the anteroom is not a three-in-one anteroom, the smoke prevention method for the anteroom and stairwell is designed according to the second preset rule. Specifically, the first preset rule is that if the anteroom is a three-in-one anteroom, it is further determined whether the two stairwells connected to the three-in-one anteroom simultaneously have natural ventilation conditions F6. The determination condition for whether the two stairwells connected to the three-in-one anteroom simultaneously have natural ventilation conditions F6 is: the area of ​​the highest point of the stairwell is not less than 1.0m². 2 The building may have operable exterior windows or openings; or, when the building height exceeds 10m, the exterior walls of the stairwell may have openings with a total area of ​​not less than 2.0m² every 5 floors. 2 The windows or openings must be operable, and the spacing between them must not exceed three floors. Based on the above criteria, if the two stairwells cannot simultaneously have natural ventilation, then both the combined vestibule and the two stairwells will use mechanical pressurization. If the two stairwells simultaneously have natural ventilation, then it must be further determined whether the pressurized air supply vents of the vestibule can be installed above the door or on the wall directly opposite the vestibule entrance. If so, the combined vestibule will use pressurized air supply, and the two stairwells will use natural ventilation; otherwise, the combined vestibule will use pressurized air supply, and the two stairwells will use pressurized air supply.

[0038] The second preset rule includes: if the result of the judgment of whether the vestibule is a three-in-one vestibule F5 is that the vestibule is not a three-in-one vestibule, then it is further judged whether the vestibule is a shared vestibule F8. If the vestibule is not a shared vestibule, then it is judged whether the vestibule is fully open or has two windows facing different directions F9. If the vestibule is fully open or has two windows facing different directions, then the stairwell is not equipped with a smoke prevention system and the vestibule adopts natural ventilation.

[0039] If the vestibule is not a three-in-one vestibule and is not a shared vestibule, and the result of the determination of whether the vestibule is fully open or has two windows facing different directions (F9) is that the vestibule is neither fully open nor has two windows facing different directions, or that the vestibule is a shared vestibule, then the further determination of whether the stairwell can be naturally ventilated (F10) is made; the criterion for determining whether the stairwell has natural ventilation conditions is that the area at the highest point of the stairwell is not less than 1.0m². 2 The building may have operable exterior windows or openings, or, when the building height exceeds 10m, a total area of ​​not less than 2.0m² may be provided on the exterior wall of the stairwell every 5 floors. 2The stairwell must have operable exterior windows or openings, and the spacing between these windows or openings should not exceed three floors. If the stairwell has natural ventilation, then it should be further determined whether the vestibule can be naturally ventilated (F11). The conditions for determining whether the vestibule can use natural ventilation are: the operable exterior windows or openings of an independent vestibule or fire elevator vestibule should not be less than 2.0 m². 2 Shared or combined anterooms should not be less than 3.0m in size. 2 If the vestibule can be naturally ventilated, then both the vestibule and the stairwell will be naturally ventilated. If the vestibule cannot be naturally ventilated, then it will be further determined whether the pressurized air supply vent of the vestibule can be installed above the door or on the wall directly opposite the entrance of the vestibule (F12). If so, the vestibule will be pressurized and the stairwell will be naturally ventilated; if not, both the vestibule and the stairwell will be pressurized. If the result of the assessment F10 regarding whether the stairwell can be naturally ventilated is that the stairwell does not have natural ventilation conditions, then the assessment F13 regarding whether the vestibule can be naturally ventilated is conducted. The conditions for determining whether the vestibule can use natural ventilation are the same as those mentioned above. If the vestibule has natural ventilation conditions, then the vestibule uses natural ventilation, and the stairwell uses mechanical pressurization. If the vestibule does not have natural ventilation conditions, then the assessment F14 regarding whether the vestibule is an independent vestibule with only one door is conducted. If the vestibule is an independent vestibule with only one door, then the stairwell uses pressurization, and there are no requirements for the smoke prevention method of the vestibule. If the vestibule is not an independent vestibule with only one door, then both the vestibule and the stairwell use pressurization.

[0040] Then perform step S5: calculate the air volume for the anteroom system and / or staircase system.

[0041] Specifically, based on the selection results of each vestibule and stairwell determined in steps S1 to S5, the type of smoke control system and the height of each system are selected. The building height to which each smoke control system is responsible is determined. If the building height is less than 24m, the air volume for stairwells and vestibules using mechanical pressurized air supply is calculated according to the relevant formula in Section 3.4.5 of the "Technical Standard for Smoke Control and Exhaust Systems in Buildings" GB 51251-2017. If the building height is greater than 24m, the air volume for stairwells and vestibules using mechanical pressurized air supply is the larger value between the table value in Section 3.4.2 and the calculated value in Section 3.4.5 of the "Technical Standard for Smoke Control and Exhaust Systems in Buildings" GB 51251-2017.

[0042] Based on the relevant provisions of the "Technical Standard for Smoke Control and Exhaust Systems in Buildings" GB 51251-2017 regarding parameters such as air outlet velocity, duct velocity, and fan volume, the parameters of the air outlet, duct, and fan are determined.

[0043] Finally, step S6 is executed: output the smoke control design information of the building model, and automatically and / or manually modify the BIM building model using the design information. Specifically, the selected smoke control method for each stairwell, the attributes of each system component, and the system calculation sheet are output. The output information is used to automatically or manually modify and refine the BIM information model, adding relevant smoke control facilities.

[0044] Computer device embodiment:

[0045] The computer device in this embodiment includes a processor and a memory. The memory stores a computer program. When the processor executes the computer program, it implements each step of the smoke control design method based on the BIM building model described above. The computer device also reserves an interface for modifying computer constraint rules according to the specifications, thereby improving future applicability.

[0046] A computer device may include, but is not limited to, a processor and memory. Those skilled in the art will understand that a computer device may include more or fewer components, or a combination of certain components, or different components; for example, a computer device may also include input / output devices, network access devices, buses, etc.

[0047] For example, a processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microcontroller or any conventional processor. The processor is the control center of a computer device, connecting all parts of the computer device through various interfaces and lines.

[0048] The memory can be used to store computer programs and / or modules. The controller implements various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. For example, the memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (e.g., sound receiving function, sound-to-text function, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (e.g., audio data, text data, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0049] Examples of computer-readable storage media:

[0050] If the modules integrated into the computer device in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, implementing all or part of the processes in the embodiments of the smoke control design method based on a BIM building model can also be accomplished by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a controller, it can implement the steps of the above embodiments of the smoke control design method based on a BIM building model. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The storage medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content contained in computer-readable media may be appropriately added to or subtracted from the requirements of legislation and patent practice in a jurisdiction. For example, in some jurisdictions, computer-readable media may not include electrical carrier signals and telecommunication signals, in accordance with legislation and patent practice.

[0051] It should be noted that the above are only preferred embodiments of the present invention, but the design concept of the invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept also fall within the scope of protection of the present invention.

Claims

1. A smoke control design method based on BIM building models, comprising: Step S1: Identify the BIM building model. The identification includes the building type, building height, vestibule type, and stairwell type. If the stairwell type is a smoke-proof stairwell, then it is further determined whether the building is a public building with a building height greater than 50m or a residential building with a building height greater than 100m. Step S2: If the building is a public building with a height greater than 50m or a residential building with a height greater than 100m, pressurized air supply shall be used in both the vestibule and the smoke-proof stairwell. Its features are: Step S3: If the building is not a public building with a height greater than 50m or a residential building with a height greater than 100m, determine whether the vestibule is a three-in-one vestibule; Step S4: If the vestibule is a three-in-one vestibule, the smoke prevention method of the vestibule and the stairwell shall be designed according to the first preset rule; if the vestibule is not a three-in-one vestibule, the smoke prevention method of the vestibule and the stairwell shall be designed according to the second preset rule. If step S3 confirms that the anteroom is the three-in-one anteroom, then it is further determined whether the two stairwells connected to the anteroom simultaneously have natural ventilation conditions. If either of the two stairwells lacks natural ventilation, then both the combined vestibule and the stairwell shall be equipped with pressurized air supply. If both stairwells connected to the three-in-one vestibule have natural ventilation, then it is further determined whether a pressurized air supply vent can be installed above the door of the three-in-one vestibule or on the wall directly opposite the entrance of the three-in-one vestibule; if so, the three-in-one vestibule adopts pressurized air supply, and the stairwell adopts natural ventilation; otherwise, both the three-in-one vestibule and the stairwell adopt the pressurized air supply method.

2. The smoke control design method based on BIM building model according to claim 1, characterized in that, The second preset rule includes: If step S3 confirms that the anteroom is not the three-in-one anteroom, then it is further determined whether the anteroom is a shared anteroom. If the anteroom is not a shared anteroom, then it is determined whether the anteroom is fully open or has two windows facing different directions. If so, the stairwell will not be equipped with a smoke control system.

3. The smoke control design method based on BIM building model according to claim 1, characterized in that, The second preset rule also includes: If step S3 confirms that the vestibule is not the three-in-one vestibule, and further confirms that the vestibule is not a shared vestibule, then if the vestibule is neither fully open nor has two windows facing different directions, then it is further determined whether the stairwell has natural ventilation conditions. If the stairwell has natural ventilation, then it is further determined whether the vestibule can use the natural ventilation method; If the anteroom can be ventilated using the natural ventilation method, then both the anteroom and the stairwell will be ventilated using the natural ventilation method.

4. The smoke control design method based on BIM building model according to claim 1, characterized in that, The second preset rule also includes: If step S3 confirms that the vestibule is not the three-in-one vestibule, and further confirms that the vestibule is not a shared vestibule, then if the vestibule is neither fully open nor has two windows facing different directions, then it is further determined whether the stairwell has natural ventilation conditions. If the stairwell has natural ventilation, then it is further determined whether the vestibule can use the natural ventilation method; if the vestibule cannot use the natural ventilation method, then it is further determined whether a pressurized air supply vent can be installed above the door of the vestibule or on the wall directly opposite the entrance of the vestibule; if yes, then the vestibule uses the pressurized air supply method and the stairwell uses the natural ventilation method; if no, then both the vestibule and the stairwell use the pressurized air supply method.

5. The smoke control design method based on BIM building model according to claim 1, characterized in that, The second preset rule also includes: If step S3 confirms that the vestibule is not the three-in-one vestibule, and further confirms that the vestibule is not a shared vestibule, then if the vestibule is neither fully open nor has two windows facing different directions, then it is further determined whether the stairwell has natural ventilation conditions; if the stairwell does not have natural ventilation conditions, then it is further determined whether the vestibule can be naturally ventilated. If the anteroom cannot be naturally ventilated, it is further determined whether the anteroom is an independent anteroom with only one door; if the anteroom is an independent anteroom with only one door, the stairwell adopts a pressurized air supply method; if the anteroom is not an independent anteroom with only one door, both the anteroom and the stairwell adopt the pressurized air supply method.

6. The smoke control design method based on BIM building model according to claim 1, characterized in that: After performing step S4, the smoke control design method further includes step S5: calculating the air volume for the anteroom system and / or staircase system.

7. The smoke control design method based on BIM building model according to claim 6, characterized in that: After performing step S5, the smoke control design method further includes step S6: outputting the smoke control design information of the building model, and automatically and / or manually modifying the BIM building model using the design information.

8. A computer device, comprising a processor and a memory, characterized in that: The memory stores a computer program that, when executed by the processor, implements the steps of the smoke control design method based on a BIM building model as described in any one of claims 1 to 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is run, it implements the steps of the smoke control design method based on BIM building model as described in any one of claims 1 to 7.

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