Urban underground pipe network BIM rapid automatic modeling method

Abstract

The invention relates to an urban underground pipe network BIM rapid automatic modeling method. According to the method, programming processing is performed on original pipeline data information stored in an electronic database, pipeline data information in a standardized format are generated and then imported into BIM software to achieve automatic modeling, and programming processing comprises the following steps that (1) classifying the original pipeline data information according to attribute information and expression forms of all pipelines; 2) judging whether pipelines collide or not according to the classified pipeline data information, if yes, executing a step 3), and if not, executing a step 4); 3) according to a set avoidance rule, modifying corresponding pipeline data information, carrying out automatic avoidance, and executing the step 2); and 4) converting the pipeline data information subjected to automatic avoidance into pipeline data information in a standardized format,and importing the pipeline data information into BIM software to realize automatic modeling. Compared with the prior art, the method has the advantages of improving the modeling efficiency, reducingthe labor cost and the like.

Description

technical field [0001] The invention relates to the field of automatic modeling of underground pipe networks, in particular to a BIM rapid automatic modeling method for urban underground pipe networks. Background technique [0002] Urban underground pipelines have always been the "blood vessels" and "nerves" of cities. Underground pipelines involve various underground pipelines such as water supply, rainwater, sewage, gas, electricity, and information, forming an intricate network of underground pipelines, that is, the urban pipeline network. It is an important part of urban infrastructure, responsible for transmitting information and transporting energy. Traditional two-dimensional CAD drawings are difficult to show the spatial distribution of pipelines in the underground pipe network, and can only show the plane distribution of pipelines. There are many intersections in densely populated pipelines, and it is difficult to distinguish whether pipelines collide. At the same t...

AI Technical Summary

Problems solved by technology

The traditional two-dimensional CAD drawing is difficult to show the spatial distribution of pipelines in the underground pipe network, and can only show the plane distribution of pipelines. There are many intersections in densely populated pipelines, and it is difficult to distinguish whether pipelines collide. At the same time, CAD drawings cannot visually display pipelines Attribute information and appendage information at pipeline connections are only expressed indirectly through labeling, so labeling at densely populated pipelines is relatively chaotic, and even pipeline information is covered up

However, as the scale of the city continues to change, the degree of refined urban management continues to increase, and the complexity of the underground pipe network is getting higher and higher, and the needs are constantly changing. Therefore, if the traditional two-dimensional method is still used, the planning and design of the underground pipe network , construction, maintenance and other work will bring greater challenges

[0003] On the BIM three-dimensional dynamic model diagram, the spatial distribution of the underground pipeline network can be displayed, and the vertical hierarchical relationship of different pipelines can be clearly seen. Therefore, the application of BIM technology in the development of urban underground space is conducive to the establishment of underground space systems. Comparative analysis of different design schemes, fine design and collision detection, etc., but the application of BIM in underground space development is still in its infancy, and the corresponding functional modules or plug-ins are still being developed and perfected

[0004] In "Research on Key Technologies of 3D Modeling of Urban Underground Pipelines", Lu Dandan et al. proposed a technical method of high-precision automatic 3D modeling. Using 2D pipeline census data, different methods were adopted according to the characteristics of various pipeline points and pipeline segments. , through spatial, attribute and material information mapping, real-time drive to generate 3D models of underground pipelines, but this method does not perform collision detection and avoidance operations on the generated 3D models, but in the actual operation process, due to detection errors, the automatically generated 3D models Models collide between different pipelines

[0005] In "Research on 3D Automated Modeling of Existing Underground Pipelines Based on BIM Technology", Wu Feng et al. proposed that through the secondary development of BIM software, the existing underground pipelines and their corresponding appendages can be imported into the software in batches, and the BIM model can be constructed. The model is modified and perfected by using the software’s built-in collision detection module and manual inspection. This method can detect the collision between pipelines through the software’s own collision detection module, but it cannot automatically avoid and requires manual participation. Automated modeling, low modeling efficiency and high cost

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