An intelligent urban rail transit system based on BIM and GIS

Abstract

The present invention discloses an urban rail transit intelligent system based on BIM and GIS. The system splices two already established BIMs after adjusting the actual parameters obtained according to GIS. That is, the BIM of the existing project and the BIM of the extended project are adjusted according to the actual parameters obtained according to the latest GIS. At the same time, the two BIMs are spliced ​​according to an interface. When splicing, the parameters of the BIM of the extended project are adjusted. In this way, the construction of the overall BIM can be completed, which is conducive to the integrity of the overall BIM. Therefore, the present invention, based on the BIM of the existing project and the BIM of the extended project, combines the latest environmental data of GIS, and creates a new BIM of the extended project on the BIM of the existing project to obtain an overall BIM, thereby achieving a complete BIM without a gap between the existing project and the extended project when the overall BIM is established, thereby ensuring the integrity of the overall BIM.

Description

Technical Field

[0001] The present invention relates to the technical field of urban rail transit construction, and in particular to an urban rail transit intelligent system based on BIM and GIS. Background Art

[0002] Urban rail transit is the preferred mode of transportation for urban residents. Its convenience and speed significantly reduce travel time and improve travel efficiency. Generally, BIM (Building Information Modeling) systems are used in the construction and operation of urban rail transit. BIM models are built using relevant data from urban rail transit construction and simulates the real-world information of urban rail transit through digital simulation. GIS (Geographic Information System) systems are also used to acquire information beyond urban rail transit, collecting and storing natural geographic environmental data, thus providing a data foundation for research on urban rail transit construction and operation.

[0003] Currently, the aforementioned BIM and GIS systems operate and operate independently, providing basic data for urban rail transit researchers to analyze and study. Urban rail transit construction requires early design based on topographical space. This requires researchers to collect topographic information from the construction area using the GIS system, then design based on the terrain and establish a BIM system, providing a foundation for later construction.

[0004] For the expansion of urban rail transit construction based on existing projects, the current method is to establish the BIM of the expansion project based on GIS, and then complete the splicing of the BIM of the expansion project with the BIM of the existing project to finally obtain the entire BIM. However, during the splicing, since the BIM of the existing project and the BIM of the expansion project are completed at different times, there will be a certain deviation in the interface part when splicing the two BIMs, which makes the spliced ​​BIM incoherent as a whole. If there is a need to expand other expansion projects in the future, it will cause more cracks in the overall BIM, which is not conducive to the subsequent direct use of BIM, so that the overall BIM cannot replace the real project construction and cannot be effectively used. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide an urban rail transit intelligent system based on BIM and GIS. According to the BIM of the existing project and the BIM of the completed extension project, combined with the environmental data collected by GIS, the BIM of the extension project is newly built on the BIM of the existing project to obtain the overall BIM, thereby achieving the goal of not having any gaps between the existing project and the extension project when the overall BIM is established, thereby ensuring the integrity of the overall BIM.

[0006] To solve the above technical problems, the present invention adopts a technical solution: an urban rail transit intelligent system based on BIM and GIS, comprising:

[0007] The original BIM acquisition module acquires the BIM of existing projects and the BIM of extended projects respectively;

[0008] GIS data acquisition module, which uses GIS to obtain environmental data of existing projects and environmental data of expansion projects;

[0009] BIM update module, which updates the BIM of existing projects based on the environmental data of existing projects, and updates the BIM of extended projects based on the environmental data of extended projects;

[0010] The extended project BIM adjustment module obtains interface parameters at the extended interface in the updated existing project BIM and adjusts the updated extended project BIM according to the interface parameters;

[0011] The BIM splicing module splices the adjusted extended project BIM to the extended interface of the updated existing project BIM to obtain the overall BIM.

[0012] Furthermore, the BIM update module includes:

[0013] Existing project BIM update module, which updates the BIM of existing projects based on the environmental data of existing projects;

[0014] The extended project BIM update module updates the BIM of the extended project according to the environmental data of the extended project.

[0015] Furthermore, the existing project BIM update module includes:

[0016] BIM point parameter acquisition module, which obtains the parameters of set points in the BIM of an existing project as original parameters;

[0017] An actual point parameter acquisition module, which selects the parameters of the set points from the environmental data of the existing project as actual parameters;

[0018] The BIM parameter reconstruction module obtains the parameter ratio based on the ratio between the original parameters and the actual parameters, and then modifies the parameters of each point in the BIM of the existing project based on the parameter ratio;

[0019] The BIM reconstruction module rebuilds the BIM based on the parameters of each point in the BIM of the existing project and completes the update of the BIM of the existing project.

[0020] Furthermore, the extended project BIM adjustment module includes:

[0021] An extended interface determination module determines the position of the interface in the updated existing project BIM according to the cross section of the updated extended project BIM port;

[0022] An interface parameter acquisition module extracts interface parameters from the updated existing project BIM according to the interface position in the updated existing project BIM;

[0023] An extended project BIM parameter adjustment module obtains port parameters of the updated extended project BIM port cross section and adjusts various parameters in the updated extended project BIM according to a ratio between the interface parameters and the port parameters;

[0024] The extended project BIM construction module rebuilds an updated extended project BIM according to the adjusted parameters of the extended project BIM.

[0025] Furthermore, the extended project BIM parameter adjustment module adjusts various parameters in the updated extended project BIM according to the ratio between the interface parameters and the port parameters, including the following steps:

[0026] Determine the adjustment coefficient based on the ratio between the interface parameters and the port parameters;

[0027] Adjust each parameter in the updated extended project BIM according to the adjustment coefficient.

[0028] Furthermore, in the extended interface determination module, the method for determining the position of the interface in the updated existing project BIM includes any one of the following:

[0029] A: Determine the interface location in the updated existing project BIM based on the cross-section of the updated extended project BIM port;

[0030] B: Determine the interface location in the updated existing project BIM based on the parameters in the cross section of the updated extended project BIM port.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] The present invention provides an urban rail transit intelligent system based on BIM and GIS, which completes splicing by adjusting two already established BIMs according to actual parameters obtained by GIS, that is, the BIM of the existing project and the BIM of the extended project are adjusted according to the actual parameters obtained by the latest GIS, ensuring the real-time update and splicing connectivity of the two BIMs, and at the same time, the two BIMs are spliced ​​according to the interface, and the parameters of the BIM of the extended project are adjusted during the splicing, so that the construction of the overall BIM can be completed. Adjusting the parameters of the BIM of the extended project is conducive to the integrity of the overall BIM and avoids gaps in the model when splicing. Therefore, the present invention, based on the BIM of the existing project and the BIM of the already completed extended project, combines environmental data collected by GIS, and newly creates the BIM of the extended project on the BIM of the existing project to obtain the overall BIM, thereby achieving that there is no gap between the existing project and the extended project when the overall BIM is established, ensuring the integrity of the overall BIM.

[0033] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural schematic diagram of an urban rail transit intelligent system based on BIM and GIS provided by the present invention. DETAILED DESCRIPTION

[0035] like Figure 1 As shown, the present invention provides an urban rail transit intelligent system based on BIM and GIS, including:

[0036] The original BIM acquisition module acquires the BIM of existing projects and the BIM of extended projects respectively;

[0037] GIS data acquisition module, which uses GIS to obtain environmental data of existing projects and environmental data of expansion projects;

[0038] BIM update module, which updates the BIM of existing projects based on the environmental data of existing projects, and updates the BIM of extended projects based on the environmental data of extended projects;

[0039] The extended project BIM adjustment module obtains interface parameters at the extended interface in the updated existing project BIM and adjusts the updated extended project BIM according to the interface parameters;

[0040] The BIM splicing module splices the adjusted extended project BIM to the extended interface of the updated existing project BIM to obtain the overall BIM.

[0041] The above modules coordinate and interact with each other, and the two established BIMs are spliced ​​after adjusting the actual parameters obtained according to GIS. That is, the BIM of the existing project and the BIM of the extended project are adjusted according to the actual parameters obtained according to the latest GIS respectively, to ensure the real-time update and splicing connectivity of the two BIMs. At the same time, the two BIMs are spliced ​​according to the interface. When splicing, the parameters of the BIM of the extended project are adjusted, so that the construction of the overall BIM can be completed. Adjusting the parameters of the BIM of the extended project is conducive to the integrity of the overall BIM and avoids gaps in the model during splicing.

[0042] Therefore, the present invention builds a new BIM of the extended project on the BIM of the existing project based on the BIM of the existing project and the BIM of the completed extended project, in combination with the environmental data collected by GIS, to obtain an overall BIM, thereby ensuring that there will be no gap between the existing project and the extended project when the overall BIM is established, thereby ensuring the integrity of the overall BIM.

[0043] Among them, the original BIM acquisition module is used to obtain the BIM of the existing project and the BIM of the extended project. The BIM of the existing project and the BIM of the extended project are pre-established. The present invention is a process of splicing two BIMs. The process of BIM construction is no longer described in detail, and the conventional construction method can be used.

[0044] The GIS data acquisition module in the present invention collects the actual conditions of existing projects and expansion projects through the constructed GIS system to obtain specific parameters, namely environmental data. The two BIMs are subsequently updated through the environmental data, making the BIMs real-time and the splicing continuity, ensuring that the subsequent splicing parameters are normal and the splicing is smooth.

[0045] The BIM update module includes two submodules, namely the existing project BIM update module and the extended project BIM update module.

[0046] Existing project BIM update module, which updates the BIM of existing projects based on the environmental data of existing projects;

[0047] The extended project BIM update module updates the BIM of the extended project according to the environmental data of the extended project.

[0048] The two submodules are used to update two BIMs: the existing project BIM and the extended project BIM. This article uses the existing project BIM update module as an example to introduce its contents and describe the update process. The extended project BIM update module operates in exactly the same way as the existing project BIM update module, differing in that it operates on different entities: one operates on the existing project BIM, while the other operates on the extended project BIM.

[0049] The BIM update module for the existing project includes:

[0050] BIM point parameter acquisition module, which obtains the parameters of set points in the BIM of an existing project as original parameters;

[0051] An actual point parameter acquisition module, which selects the parameters of the set points from the environmental data of the existing project as actual parameters;

[0052] The BIM parameter reconstruction module obtains the parameter ratio based on the ratio between the original parameters and the actual parameters, and then modifies the parameters of each point in the BIM of the existing project based on the parameter ratio;

[0053] The BIM reconstruction module rebuilds the BIM based on the parameters of each point in the BIM of the existing project and completes the update of the BIM of the existing project.

[0054] When updating, the original parameters are compared with the environmental data actually detected at the moment. The comparison rule is generally a proportional relationship. At this time, the parameters of all points in the BIM can be updated according to the proportional relationship. This provides a basis for BIM update and reconstruction, and then the BIM is rebuilt to complete the BIM update.

[0055] In the present invention, for two BIMs that have been updated, the next step is to perform a splicing process, referring to the extended project BIM adjustment module in the present invention to complete the splicing of the two BIMs.

[0056] The extended project BIM adjustment module includes: an extended interface determination module, an interface parameter acquisition module, an extended project BIM parameter adjustment module and an extended project BIM construction module.

[0057] An extended interface determination module determines the position of the interface in the updated existing project BIM according to the cross section of the updated extended project BIM port;

[0058] An interface parameter acquisition module extracts interface parameters from the updated existing project BIM according to the interface position in the updated existing project BIM;

[0059] An extended project BIM parameter adjustment module obtains port parameters of the updated extended project BIM port cross section and adjusts various parameters in the updated extended project BIM according to a ratio between the interface parameters and the port parameters;

[0060] The extended project BIM construction module rebuilds an updated extended project BIM according to the adjusted parameters of the extended project BIM.

[0061] In the above splicing process, the first step is to determine the splicing interface position. This is the work of the extended interface determination module. This module includes two methods (A and B), and you can choose either one, namely:

[0062] In the extended interface determination module, the method for determining the position of the interface in the updated existing project BIM includes any of the following:

[0063] A: Determine the interface location in the updated existing project BIM based on the cross-section of the updated extended project BIM port;

[0064] B: Determine the interface location in the updated existing project BIM based on the parameters in the cross section of the updated extended project BIM port.

[0065] Among them, A starts from the perspective of graphic shape, and B starts from the perspective of parameters. The present invention recommends method B, which can more accurately obtain the position of the interface. A is used when the shape difference is relatively large to achieve rapid positioning.

[0066] In addition, the above-mentioned extended project BIM parameter adjustment module adjusts various parameters in the updated extended project BIM according to the ratio between the interface parameters and the port parameters, including the following steps:

[0067] Determine the adjustment coefficient based on the ratio between the interface parameters and the port parameters;

[0068] Adjust each parameter in the updated extended project BIM according to the adjustment coefficient.

[0069] Similarly, when splicing, the parameters are adjusted according to the correspondence between the parameters to complete the reconstruction of the BIM. This can make the standards of each parameter in the two BIMs the same, so that no cracks will be generated after splicing, and it is completely consistent with the actual situation. Therefore, when the overall BIM is established, there will be no cracks between the existing project and the expanded project, ensuring the integrity of the overall BIM.

[0070] The BIM splicing module in this invention splices the adjusted extended project BIM onto the extended interface of the updated existing project BIM to create the integrated BIM. Based on the aforementioned parameter adjustments, this module achieves seamless splicing, creating the expanded project BIM on top of the existing project BIM to create the integrated BIM without creating gaps between the existing and expanded projects during the splicing process.

[0071] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An urban rail transit intelligent system based on BIM and GIS, characterized by: include: The original BIM acquisition module acquires the BIM of existing projects and the BIM of extended projects respectively; GIS data acquisition module, which uses GIS to obtain environmental data of existing projects and environmental data of expansion projects; BIM update module, which updates the BIM of existing projects based on the environmental data of existing projects, and updates the BIM of extended projects based on the environmental data of extended projects; The BIM update module includes an existing project BIM update module and an extended project BIM update module: Existing project BIM update module, which updates the BIM of existing projects based on the environmental data of existing projects; The extended project BIM update module updates the BIM of the extended project according to the environmental data of the extended project; The existing project BIM update module includes: a BIM point parameter acquisition module, an actual point parameter acquisition module, a BIM parameter reconstruction module and a BIM reconstruction module; BIM point parameter acquisition module, which obtains the parameters of set points in the BIM of an existing project as original parameters; An actual point parameter acquisition module, which selects the parameters of the set points from the environmental data of the existing project as actual parameters; The BIM parameter reconstruction module obtains the parameter ratio based on the ratio between the original parameters and the actual parameters, and then modifies the parameters of each point in the BIM of the existing project based on the parameter ratio; The BIM reconstruction module rebuilds the BIM based on the parameters of each point in the BIM of the existing project and completes the update of the BIM of the existing project; The extended project BIM adjustment module obtains interface parameters at the extended interface in the updated existing project BIM and adjusts the updated extended project BIM according to the interface parameters; The extended project BIM adjustment module includes: an extended interface determination module, an interface parameter acquisition module, an extended project BIM parameter adjustment module and an extended project BIM construction module; An extended interface determination module determines the position of the interface in the updated existing project BIM according to the cross section of the updated extended project BIM port; An interface parameter acquisition module extracts interface parameters from the updated existing project BIM according to the interface position in the updated existing project BIM; An extended project BIM parameter adjustment module obtains port parameters of the updated extended project BIM port cross section and adjusts various parameters in the updated extended project BIM according to a ratio between the interface parameters and the port parameters; The extended project BIM construction module rebuilds the updated extended project BIM according to the adjusted parameters of the extended project BIM; The BIM splicing module splices the adjusted extended project BIM to the extended interface of the updated existing project BIM to obtain the overall BIM.

2. The urban rail transit intelligent system based on BIM and GIS according to claim 1 is characterized in that: The extended project BIM parameter adjustment module adjusts various parameters in the updated extended project BIM according to the ratio between the interface parameters and the port parameters, including the following steps: Determine the adjustment coefficient based on the ratio between the interface parameters and the port parameters; Adjust each parameter in the updated extended project BIM according to the adjustment coefficient.

3. The urban rail transit intelligent system based on BIM and GIS according to claim 1 is characterized in that: In the extended interface determination module, the method for determining the position of the interface in the updated existing project BIM includes any of the following: A: Determine the interface location in the updated existing project BIM based on the cross-section of the updated extended project BIM port; B: Determine the interface location in the updated existing project BIM based on the parameters in the cross section of the updated extended project BIM port.

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