CN116011157A - Automatic desk CAD and Revit secondary development-based pipeline rapid extraction modeling method - Google Patents
Automatic desk CAD and Revit secondary development-based pipeline rapid extraction modeling method Download PDFInfo
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- CN116011157A CN116011157A CN202211553673.0A CN202211553673A CN116011157A CN 116011157 A CN116011157 A CN 116011157A CN 202211553673 A CN202211553673 A CN 202211553673A CN 116011157 A CN116011157 A CN 116011157A
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Abstract
The invention relates to the technical field of pipeline modeling, in particular to a pipeline quick extraction modeling method based on Autodesk CAD and Revit secondary development.
Description
Technical Field
The invention relates to the technical field of pipeline modeling, in particular to a pipeline rapid extraction modeling method based on Autodesk CAD and Revit secondary development.
Background
Municipal pipe network as an infrastructure of a city, including electricity, telecommunications, network, communications, heat, gas, rainwater drainage, sewage drainage, etc., which exists in every detail we live in;
because the municipal pipe network of city specialty is numerous, arranges the route complicacy, and constructor need look over the plane drawing when using the drawing, search well number and coordinate elevation in the table simultaneously, then mark the elevation information on cad drawing manually, this kind of mode of looking over has wasted manpower and materials greatly. Although visual display effect can be achieved through manual BIM modeling, the input-output ratio is extremely low;
aiming at the defects of the prior software technology, a Revit-based parameterized automatic modeling method is researched, and the modeling efficiency and accuracy are improved. And (3) after the geophysical prospecting table is processed, importing screening information of a Revit platform to each functional module for modeling, and modeling of water pipes and air pipes (replacing a pipe trench) is realized through secondary Revit development. After the model is completed, the BIM intuitively reflects the spatial positions of various pipelines and assists in construction decision deployment.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a pipeline rapid extraction modeling method based on Autodesk CAD and Revit secondary development.
In order to solve the technical problems, the invention provides the following technical scheme: a pipeline rapid extraction modeling method based on Autodesk CAD and Revit secondary development comprises the following steps:
s1: familiarizing with CAD drawings;
s2: and (3) importing Revit software, extracting and processing municipal pipeline geophysical prospecting key information data, extracting CAD cable layer data information, extracting comprehensive pipe rack, pipeline and cable information and the like. And (3) automatically completing modeling and drawing by the Revit according to the information extracted by the CAD, and comprehensively displaying by a BIM+GIS fusion technology. The system adopts multiple platforms such as AutoCAD and Revit, so that three-dimensional design of pipelines, power lines and cables can be completed in a single platform, the advantages of each platform can be fully utilized, and the design efficiency and quality are maximized through lossless transmission of information and models, so that multiple requirements of design drawing, model display and application are met;
s3: building a model;
s4: exporting an NWC file;
s5: detecting collision;
s6: deriving a detection report;
s7: marking an error;
s8: optimizing the pipeline;
s9: and finally, counting.
As a preferable technical scheme of the invention, the S1 familiar CAD drawing comprises the positions, the numbers and the angles of pipelines, valves, welded junctions, welding seams and elbows in the familiar CAD drawing.
As a preferable technical scheme of the invention, the S2 is imported into the Revit software, and the CAD drawing is imported into the Revit MEP software as a base drawing for positioning, picking up the line and the like by utilizing the line in the CAD drawing.
As a preferable technical scheme of the invention, the models of each specialty and each system in the S3 building model are combined in a modularization way after being separately built.
As a preferable technical scheme of the invention, after the water heating electric model in the S3 building model is built, a file with a format of NWC is exported, so that preparation is made for collision check in Navisworks in the next step.
As a preferred embodiment of the present invention, the S5 collision detection includes the following steps:
the first step: opening an item model in the Revit, opening Navisworks in a function bar additional module, and exporting nwc of the Revit model;
and a second step of: then the Navisworks software is added with nwc format files which are exported by each profession;
and a third step of: clashdetect is selected in the Navisworks function column for collision setting, items and primitive types participating in collision detection are selected, the type of detection collision is set (hard collision and gap collision can be selected), and finally collision detection is operated to obtain a detection report.
As a preferable embodiment of the invention, after the detection report is derived in S6, the collision point is resolved according to the collision report, and after the collision check is completed, a collision check report is derived.
As a preferable embodiment of the present invention, the method for marking the error in S7 is to return to the Revit model to find the corresponding position through the item ID according to the collision point, the item ID number, the state, the image, and the like included in the collision check report.
As a preferable technical scheme of the invention, the S8 optimized pipeline is modified by the mark marked in the S7, and then secondary inspection is carried out according to the report.
As a preferable technical scheme of the invention, the S9 final statistics is to use the engineering quantity statistics function of the software to count various devices and materials in the drawing after the optimization in the step S8 is completed, and to derive a table to guide the purchase of the devices and materials in the earlier stage of construction.
Compared with the prior art, the invention has the following beneficial effects:
1. while the pipelines in the traditional two-dimensional drawing are simply combined by using dotted lines, the pipelines in the Revit have geometrical characteristics, and also include attributes and functional characteristics, such as pipeline flow, pipeline roughness and the like.
2. In the pipeline comprehensive design, the spatial relationship of various pipelines is clear at a glance, and the pipeline collision problem can be efficiently solved by utilizing the collision checking function of software to check, especially on the problem of collision of pipelines with other professions.
3. The parameterized design is an important feature of Revit, the graphic elements in Revit are all displayed in a component form, software itself has a series of parameterized definition basic graphic elements, for example, pipelines in the current two-dimensional drawing are all represented by single lines or double lines, when the pipe diameter is modified, lines are required to be manually moved, text labels are required to be manually modified, and in Revit software, only the pipe diameter is required to be input, and the pipeline specification and the text labels are both modified in a linkage manner.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention. .
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present invention are obtained will become readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.
Examples:
as shown in fig. 1, a pipeline rapid extraction modeling method based on Autodesk CAD and Revit secondary development includes the following steps:
s1: familiar with CAD drawings, most of the current drawing modes adopt CAD two-dimensional drawings firstly and then three-dimensional drawings are drawn according to the requirements of actual projects. Therefore, familiarity with CAD two-dimensional drawings is of great importance. The outline of the project can be mastered in the process of drawing and reading, and the whole project is known in detail;
s2: revit software is imported, and an Autodesk Revit technology is a platform for an Autodesk to be used for a building information model. Autodesk Revit Building software is built on the Revit platform, is a complete and specific professional building design and document system, and supports design and construction drawings at all stages. From conceptual research to the most detailed construction drawings and detailed tables, revit-based applications can bring instant competitive advantages, provide better coordination and quality, and make architects and other members of the building team more profitable. At the heart of the Revit platform is a Revit parameterized modification engine which can automatically coordinate modification made at any location (e.g., in model view or drawing, detail table, profile, plan view), municipal pipeline geophysical prospecting key information data extraction, processing, extraction of CAD cable layer data information, utility tunnel, pipeline, cable information extraction, etc. And (3) automatically completing modeling and drawing by the Revit according to the information extracted by the CAD, and comprehensively displaying by a BIM+GIS fusion technology. The system adopts multiple platforms such as AutoCAD and Revit, so that three-dimensional design of pipelines, power lines and cables can be completed in a single platform, the advantages of each platform can be fully utilized, and the design efficiency and quality are maximized through lossless transmission of information and models, so that multiple requirements of design drawing, model display and application are met;
building Information Models (BIMs) are coordinated, internally consistent, computable information about building projects that is created and used in the design and construction process. The functionality keeps the information up to date and allows users to access it in an integrated digital environment so that architects, engineers, constructors and owners have a clear overall knowledge of their projects, enabling them to make more informed decisions faster, thus helping to improve the quality and profitability of the project;
s3: in order to avoid overlarge model files, various professions of water heating electricity and even models of various systems are sometimes required to be built respectively, all models can be assembled in a link or working set mode in the later period, the S3 building model comprises modeling data reading, data preprocessing, pipe section modeling, communication characteristic modeling and pipe well semiautomatic parameter modeling, modeling configuration information comprises information such as a pipe point pipeline table, type mapping coding, accessory facility mapping coding and prefabricated model names used for modeling in a database, and a user can modify configuration information according to self = pipe line data organization form and map the configuration information to a standard interface of three-dimensional modeling of a pipeline defined by the system, so that standardization of pipeline information mapping is realized. Typically for an item, the configuration of pipeline data collected using the same-standard may remain unchanged after setup;
and reading pipeline data of the pipeline points in the tables according to the pipeline table names of the pipeline points in the acquired configuration information, including IDs, positions, burial depths and the like, and storing the pipeline data by utilizing pipeline points and pipeline data structures. During modeling, generating a three-dimensional model in batches according to different types of pipelines;
the data preprocessing aims at carrying out certain calculation, preparing for three-dimensional modeling of pipe points and pipe sections, and simplifying processing steps in the process of formal modeling. The pretreatment mainly comprises position calculation, connection feature and pipe section connection position calculation and accessory parameter position calculation. During preprocessing, intermediate results are generated, which are parameters needed for three-dimensional pipeline modeling, and are stored in pipeline points and pipeline fields, and the specific field meaning is referred to in the following preprocessing steps;
modeling a pipe section of a circular pipe, calculating section characteristic points according to the section normal line (which is generally parallel to the connecting line of two central points of the pipe section) of the pipe section by adopting a rotary vector method, and then assembling the circular pipe into the square pipe section, wherein for the square pipe section, attention is paid to the orientation of the square pipe, and the side surface of the square pipe is vertical, so that the section characteristic points of the square pipe are calculated by controlling the normal line of the side surface of the pipe section to be horizontal;
the straight-through pipe of the round pipe and the square pipe can be divided into a plurality of pipe sections. The modeling is carried out according to the first segmentation of the straight-through, the center point of each segment and the normal of the section of each segment are calculated, then the section characteristic point is calculated, and finally the circular pipe or square pipe straight-through is assembled. The key of modeling is to establish a segmentation center point and a section normal;
in the semi-automatic parameter modeling of the pipe well, a semi-automatic parameter modeling method is adopted for the three-dimensional modeling of part of the pipe well, 3dsMax software is utilized for manufacturing a prefabricated model for a complex well lid, a parameterized modeling mode is adopted for a well body part, the establishment of a pipe body model is realized according to different structures and sizes of each pipe well, and the establishment of a combined pipe well model is finally realized. This modeling approach can be used for some complex, reuse-high, but there are some different models to build. The three-dimensional modeling is carried out on the variable part in a parameterized mode by extracting common components and complex modeling, and preparing a model in advance;
s4: export NWC file Autodesk Navisworks is a comprehensive project review solution supporting 5D simulation, reconciliation, analysis, and exchange of design intent and constructability. Extensive Building Information Models (BIMs), digital prototypes, and multidisciplinary design data created in a process plant design application can be consolidated into one integrated project model. Comprehensive planning, quantification, cost, animation and visualization functions can assist users in exhibiting design intent, simulating construction, and helping to improve insight and predictability. Real-time navigation in combination with viewing the tool set supports collaboration throughout the project team. The entire project model can be published and viewed using NWD and DWFTM file formats to provide valuable digital resources from the design during construction. The interference management tool may help design specialists and construction specialists to anticipate and avoid potential problems before construction begins, thereby minimizing costly delays and rework. The entire project model can be published and viewed for free using AutodeskNavisworks Freedom software;
s5: the collision detection is the most important step in all works, and the collision between the water heating and electricity models and the building model can be checked;
s6: a detection report is exported, and after the collision inspection is finished, the report of the collision inspection is needed to be exported and provided for other staff or is ready for archiving, so that the integrity and the authenticity of the information are ensured;
s7: marking errors, at present, the RevitMEP software and the AutoCAD software cannot realize automatic marking errors according to a collision inspection report, and the collision position needs to be marked manually for reference and modification;
s8: optimizing the pipeline, a designer can look up the design position to be modified according to the collision mark, and then optimize the pipeline system according to the related specification requirements of each specialty, so that some design errors can be corrected before construction is realized, and the construction efficiency and cost are saved;
s9: and finally, counting.
The S1 familiarity CAD drawing comprises positions, numbers and angles of pipelines, valves, welded junctions, welding seams and elbows in familiarity CAD drawing, the S2 is imported into Revit software for positioning, picking up lines and the like by using the lines in the CAD drawing, the CAD drawing is imported into Revit MEP software as a base drawing, the models of each specialty and each system in the S3 construction model are separately constructed and then combined in a modularized manner, and after the water heating electric model in the S3 construction model is constructed, files with the format of NWC are exported for preparing for collision check in Navisworks in the next step.
The S5 collision detection comprises the following steps:
the first step: opening an item model in the Revit, opening Navisworks in a function bar additional module, and exporting nwc of the Revit model;
and a second step of: then the Navisworks software is added with nwc format files which are exported by each profession;
and a third step of: clashdetect is selected in the Navisworks function column for collision setting, items and primitive types participating in collision detection are selected, the type of detection collision is set (hard collision and gap collision can be selected), and finally collision detection is operated to obtain a detection report.
After the detection report is exported according to the S6, the collision point is solved, after the collision inspection is run, the collision inspection report is exported, the S7 error marking method is that the corresponding position is searched in a Revit model for marking according to the collision point, the project ID number, the state, the image and the like included in the collision inspection report, the project ID is returned, the S8 optimized pipeline is modified through the marked mark in the S7, the secondary inspection is carried out according to the report, the S9 final statistics is that after the optimization of the S8 is finished, the engineering quantity statistics function of software is used for counting various equipment and materials in a drawing, a table is exported, and the equipment and the material purchase in the early stage of construction are guided.
The pipelines in the traditional two-dimensional drawing are simply combined by using dotted lines, the geometric relationship can be expressed only, the pipelines in the Revit have geometric characteristics, properties and functional characteristics such as pipeline flow, pipeline roughness and the like, the spatial relationship of various pipelines is clear at a glance in the comprehensive design of the pipelines, the collision problem of the pipelines can be effectively solved by using the collision checking function of software, especially on the collision problem of other professional pipelines, the parameterized design is an important characteristic of the Revit, the primitives in the Revit are all displayed in the form of components, software itself has a series of parameterized definition basic primitives, for example, when the pipelines in the existing two-dimensional drawing are all represented by single lines or double lines, the lines are required to be manually moved and the text labels are required to be manually modified, and in the Revit software, the pipeline specifications and the text labels are required to be manually modified in a linkage manner.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. A pipeline rapid extraction modeling method based on Autodesk CAD and Revit secondary development is characterized by comprising the following steps:
s1: familiarizing with CAD drawings;
s2: leading in Revit software;
s3: building a model;
s4: exporting an NWC file;
s5: detecting collision;
s6: deriving a detection report;
s7: marking an error;
s8: optimizing the pipeline;
s9: and finally, counting.
2. The method for rapid extraction modeling of pipelines based on Autodesk CAD and Revit secondary development according to claim 1, wherein the S1 familiar CAD drawing includes the positions, numbers and angles of pipelines, valves, welded junctions, welds and elbows in the familiar CAD drawing.
3. The method for rapidly extracting and modeling a pipeline based on Autodesk CAD and Revit secondary development according to claim 1, wherein the S2 is imported into Revit software, and the CAD drawing is imported into Revit MEP software as a base drawing for positioning, picking up lines and the like by using the lines in the CAD drawing.
4. The method for rapidly extracting and modeling a pipeline based on Autodesk CAD and Revit secondary development according to claim 1, wherein the S3 construction model comprises modeling data reading, data preprocessing, pipe section modeling, communication characteristic modeling, pipe well semiautomatic parameter modeling and, after the models of each professional and each system in the S3 construction model are separately constructed, modularization combination is carried out.
5. The method for rapidly extracting and modeling a pipeline based on Autodesk CAD and Revit secondary development according to claim 1, wherein after the construction of a water heating electric model in the S3 construction model is completed, a file with a format of NWC is exported, and preparation is made for the next collision check in Navisworks.
6. The method for rapid pipeline extraction modeling based on Autodesk CAD and Revit secondary development according to claim 1, wherein the S5 collision detection comprises the steps of:
the first step: opening an item model in the Revit, opening Navisworks in a function bar additional module, and exporting nwc of the Revit model;
and a second step of: then the Navisworks software is added with nwc format files which are exported by each profession;
and a third step of: clashdetect is selected in the Navisworks function column for collision setting, items and primitive types participating in collision detection are selected, the type of detection collision is set (hard collision and gap collision can be selected), and finally collision detection is operated to obtain a detection report.
7. The method for rapidly extracting and modeling a pipeline based on Autodesk CAD and Revit secondary development according to claim 1, wherein after the detection report is derived in step S6, the collision point is solved according to the collision report, and after the collision inspection is run, a collision inspection report is derived.
8. The method for rapidly extracting and modeling a pipeline based on Autodesk CAD and Revit secondary development according to claim 1, wherein the method for marking the error by S7 is to return to the Revit model to find the corresponding position for marking through the item ID according to the collision point, the item ID number, the state, the image and the like included in the collision check report.
9. The method for rapid extraction modeling of pipelines based on Autodesk CAD and Revit secondary development according to claim 1, wherein the S8 optimized pipeline is modified by the mark marked in S7, and then is subjected to secondary inspection according to the report.
10. The method for rapidly extracting and modeling a pipeline based on Autodesk CAD and Revit secondary development according to claim 1, wherein the S9 final statistics is that after the optimization in the step S8 is completed, various devices and materials in a drawing are counted by using an engineering quantity counting function of software, a table is derived, and the purchase of the devices and materials in the earlier stage of construction is guided.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117290132A (en) * | 2023-11-15 | 2023-12-26 | 江西少科智能建造科技有限公司 | Data processing method and system convenient for electromechanical pipeline synthesis of three-dimensional model |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117290132A (en) * | 2023-11-15 | 2023-12-26 | 江西少科智能建造科技有限公司 | Data processing method and system convenient for electromechanical pipeline synthesis of three-dimensional model |
| CN117290132B (en) * | 2023-11-15 | 2024-03-08 | 江西少科智能建造科技有限公司 | Data processing method and system convenient for electromechanical pipeline synthesis of three-dimensional model |
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