CN118070464A - Cable line engineering forward direction drawing method under Revit platform - Google Patents
Cable line engineering forward direction drawing method under Revit platform Download PDFInfo
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Abstract
The invention relates to the technical field of municipal cable design, in particular to a forward drawing method of cable line engineering under a Revit platform, which is used for automatically extracting path data from a line path object.
Description
Technical Field
The invention relates to the technical field of municipal cable design, in particular to a forward direction drawing method of cable line engineering under a Revit platform.
Background
The traditional CAD drawing generally adopts a method of parameterization drawing, namely drawing a graph according to parameters (scale, frame parameters and the like) and geometric data, but symbol display cannot be dynamically adjusted according to the parameters, and external editing is needed. For complex symbols, which are typically based on a combination of entities, such discrete combined symbol editing is cumbersome. Therefore, to achieve dynamic display of the symbol, the graphic symbol must be redefined, the symbol display is associated with drawing parameters, and parameterized dynamic display of the graphic symbol object is achieved, while maintaining the integrity of the symbol.
Therefore, the drawing of the pipeline horizontal section diagram needs to have two characteristics of CAD and GIS at the same time in the aspects of data model, graphic expression and functional processing, and the superior editing and display mode of the CAD platform and the powerful data processing and management function of the GIS platform are fused, so that the advantages and advantages are taken into account, and a complete CAD and GIS integration scheme is constructed. The existing pipeline section diagrams all express the elevation and the position of the underground pipeline on the longitudinal section of the pipeline by the crossing point (section) of the pipeline. This approach meets the current regulatory requirements, but has significant drawbacks:
1. the underground line engineering channels have certain widths, and only the crossing pipelines on the line center line cannot reflect the height of the pipelines in the side line range (construction range), so that designers must obtain the highest or lowest positions of the pipelines in the path range by other methods, and inconvenience is brought to design.
2. The lines parallel or adjacent to the line centerline and within the design of the duct channel do not intersect with the centerline or edge line and are difficult to express by way of intersection (cross section). If the end points or the sampling points on the pipeline are used as the cross points to be drawn, the designer needs to confirm the connection relationship from the plan view. The expression mode is neither complete nor visual, and is easy to cause misjudgment.
3. Besides intersection line and intersection point, drawing left and right 2 intersection points or sampling a plurality of points from the pipeline as intersection points to draw the section of the pipeline can reflect the height distribution of one pipeline to a certain extent, but the mode is complicated and can cause crowded and overlapped drawing symbols, and interpretation is difficult.
In summary, only the cross section of the pipeline is drawn, while the conventional standard requirement is met, but the design requirement cannot be completely met, so that the forward drawing method of the cable line engineering under the Revit platform is provided, the forward drawing of the cable line engineering under the Revit platform can be changed from passive design to active design, the design quality can be grasped from the source, the cable laying is simulated in advance, the problem of cable laying before the cable design is solved, the production period is shortened, and the production cost is reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a forward direction drawing method of cable line engineering under a Revit platform.
In order to solve the technical problems, the invention provides the following technical scheme: a forward direction drawing method of cable line engineering under a Revit platform comprises the following steps:
S1: designing a cable channel; the modeling design of pipelines, structures, buildings and equipment in a three-dimensional environment has practical significance in three-dimensional arrangement of cable channels. And planning the space trend position of the cable channel in Revit according to the conditions of the density of the used cables and the like, performing collision verification, and correcting the layout design according to the verification result. The cable channel is the carrier for cabling. The cable channels are arranged in multiple layers in the design, and different types of cables run through the cable channels in different layers in the laying process. The cable channel may have a cable fill rate set therein. The software calculates the sectional area of the cable by calling the outer diameter attribute of the cable in the channel in the database, and further calculates the filling rate of the cable channel. Thus, the cable can be laid according to the cable filling rate required by the design specification.
S2: designing a buried pipe;
S3: leading in an original cable album; the original cable inventory provides the software with cabling data that participates in the cabling. And completing the initial cable inventory according to the cable connection data. The content comprises a cable number, a starting point and an ending point device name, a model and a specification of a cable are selected, and a cable filling rate detection attribute is set. And importing the compiled Excel list into three-dimensional software to generate the cable with the album content attribute.
S4: laying cables in batches;
S5: detecting the channel filling rate;
s6: and (5) finishing the laying.
As a preferred technical scheme of the invention, the S1 cable channel design comprises the establishment of a bridge database and the establishment of a cable database, wherein the establishment of the bridge database requires preparation of bridge data required by projects, and the establishment of the cable database requires preparation of cable data required by projects.
As a preferable technical scheme of the invention, the S3 leading-in original cable album needs to be designed firstly.
As a preferable technical scheme of the invention, if the result of the detection of the filling rate of the S5 channel does not meet the requirement, the S4 batch of cable is laid again by modifying the channel or modifying the bridge and then modifying the channel.
As a preferable technical scheme of the invention, the cable laying chart and the cable album meeting the requirements are obtained after the S6 laying is completed.
As a preferable technical scheme of the invention, the step of importing the cable laying diagram meeting the requirements obtained after the step S6 is laid into CAD software to generate a new pipeline plan, comprises the following steps:
The first step: reading a pipeline point record;
and a second step of: reconstructing a pipeline segment;
and a third step of: drawing a pipeline plan view.
As a preferred embodiment of the present invention, the reading pipeline point record includes pipeline point spatial location and attribute, pipeline point connection, and pipeline segment attribute. And judging whether the pipeline point identification is repeated in the reading process.
As a preferable technical scheme of the invention, the pipeline segment reconstruction is to generate corresponding pipeline segment data according to pipeline point connection, and the repeated pipeline segment record is judged and excluded in the generation process.
As a preferable technical scheme of the invention, the drawing of the pipeline plan is to draw pipeline points and pipeline segments according to system pipeline configuration in CAD software and automatically symbolize the pipeline points and pipeline segments, and simultaneously write attributes into the extension data of the entity according to attribute structure configuration.
As a preferred technical solution of the present invention, data required for drawing a flat section drawing is automatically extracted from a plan view according to a pipeline route path, and then the flat section drawing is automatically drawn using the data, comprising the steps of:
The first step: automatically extracting path data from the line path object;
And a second step of: automatically extracting a compute pipeline cross-over from the pipeline segment object;
And a third step of: automatically extracting terrain section data from a terrain triangle network;
fourth step: automatically intercepting and converting the measured coordinate path diagram into a line coordinate path diagram;
Fifth step: the data extracted by importing are automatically drawn into a pipeline flat section diagram, and a novel pipeline section expression method is provided aiming at the condition that the cross section can not completely express the height distribution of the pipeline section. The method expresses the height distribution of the pipeline on the section by the projection line segment of the pipeline section in the boundary range on the longitudinal section of the line center line. The projection section is drawn according to the actual pipe diameter (or specification) and the offset of the end points is marked.
Compared with the prior art, the invention has the following beneficial effects:
1. The forward drawing of the cable line engineering under the Revit platform can be changed from passive design to active design, the design quality can be grasped from the source, the cable laying is simulated in advance, the problem of cable laying before the cable design is solved, the production period is reduced, and the production cost is reduced.
2. The automatic generation of the vertical section finishes the history of manually making the construction drawing, and the drawing efficiency is greatly improved.
3. N cables can be laid simultaneously, each cable independently exists, the change is convenient, and the independence is strong.
4. The diameter of the cable and the branching position of the cable can be effectively simulated.
5. The cable laying path can be effectively simulated, and the lengths of all branches of the cable are given.
6. The cable space coordination and the cable bending property of the electric power well can be detected.
7. Whether the cable binding design is reasonable or not can be visually checked.
8. The cable three-dimensional laying has strong overall intuitiveness.
Drawings
Fig. 1 is a flow chart of the three-dimensional cable design in 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 forward direction drawing method for cable line engineering under a Revit platform includes the following steps:
S1: designing a cable channel; the S1 cable channel design comprises the establishment of a bridge database and the establishment of a cable database, wherein the establishment of the bridge database requires preparation of bridge data required by projects, the establishment of the cable database requires preparation of cable data required by projects, and the modeling design of pipelines, structures, buildings and equipment in a three-dimensional environment enables the three-dimensional arrangement of the cable channels to have practical significance. And planning the space trend position of the cable channel in Revit according to the conditions of the density of the used cables and the like, performing collision verification, and correcting the layout design according to the verification result. The cable channel is the carrier for cabling. The cable channels are arranged in multiple layers in the design, and different types of cables run through the cable channels in different layers in the laying process. The cable channel may have a cable fill rate set therein. The software calculates the sectional area of the cable by calling the outer diameter attribute of the cable in the channel in the database, and further calculates the filling rate of the cable channel. Thus, the cable can be laid according to the cable filling rate required by the design specification;
Revit is the name of a suite of software from Autodesk. The Revit series software is built for a Building Information Model (BIM), can help a building designer to design, build and maintain a building with better quality and higher energy efficiency, and is software which takes a building Structure as a carrier and is developed by an Autodesk company based on a building Structure design concept, and is called Revit Structure in English. The English name of the software is interpreted as building structure design software, but the application in China is not reflected in the aspect of structure calculation, and nevertheless, the method still provides great help for designers in the working stages of pretreatment and post-treatment. The biggest characteristic of Revit software is to highlight the three-dimensional collaborative model design. The model can be read visually by a designer, a first party and participants at each stage, and the model data can be modified timely, wherein the model covers a plurality of professions such as a building, a structure, water heating electricity and the like, and when the Revit model is built according to a design drawing, the model covers all data information such as a two-dimensional drawing, a three-dimensional model, various pipeline details and the like. The model is just a model, and the model can instantly realize information sharing and information communication, and the model is just a parameterized embodiment. Creating, adjusting, participating in other views, and later maintenance saves a great deal of effort and time for the user. In the design stage, as the model is established, a designer can communicate with an investor more conveniently, an intuitive and clear scheme is provided for the investor, a series of changes caused by modification in the later stage are reduced, and the cooperative work of each participant of the project is greatly enhanced;
S2: designing a buried pipe;
S3: leading in an original cable album; and S3, the original cable album is imported, the original cable album is designed, and the original cable album provides cable data participating in laying for software. And completing the initial cable inventory according to the cable connection data. The content comprises a cable number, a starting point and an ending point device name, a model and a specification of a cable are selected, and a cable filling rate detection attribute is set. Importing the compiled Excel table into three-dimensional software to generate a cable with the property of the album content;
S4: laying cables in batches;
s5: detecting the channel filling rate; if the result of the S5 channel filling rate detection does not meet the requirement, carrying out S4 batch cable laying again by modifying the channel or modifying the bridge frame first and then modifying the channel;
S6: finishing the laying; and (6) obtaining a cable laying diagram and a cable album meeting the requirements after finishing the S6 laying.
The Revit cable design system provides two laying modes, automatic laying and manual laying. Automatic laying can realize batch laying of cables. In the automatic laying process, the system automatically searches the optimal path for laying the cable in the channel. In manual laying, a designer can customize a laying path according to engineering requirements. The software uses Dijkstra algorithm to find the shortest path. The Dijkstra algorithm is a typical single source shortest path algorithm that is used to calculate the shortest path from one node to all other nodes. The method is mainly characterized by taking a starting point as a center and expanding the starting point layer by layer until the starting point is expanded to a finishing point. In the process of laying the cable, the system automatically optimizes according to Dijkstra algorithm according to the starting point and the ending point of the cable to find out the shortest laying path.
And (3) importing the cable laying diagram meeting the requirements obtained after the S6 is laid into CAD software to generate a new pipeline plan, wherein the method comprises the following steps of:
The first step: reading a pipeline point record; the read pipeline point record comprises pipeline point space position and attribute, pipeline point connection and pipeline segment attribute. Judging whether the pipeline point mark is repeated in the reading process
And a second step of: reconstructing a pipeline segment; the pipeline segment reconstruction is to generate corresponding pipeline segment data according to pipeline point connection, and judge and exclude repeated pipeline segment records in the generation process
And a third step of: drawing a pipeline plan; the drawing of the pipeline plan is to draw pipeline points and pipeline segments according to system pipeline configuration in CAD software and automatically symbolize the pipeline points and the pipeline segments, and simultaneously write attributes into the expansion data of the entity according to attribute structure configuration.
The method automatically extracts the data required by drawing the plane section diagram from the plane diagram according to the pipeline route, then automatically draws the plane section diagram by utilizing the data, and greatly reduces the tedious and repeated modification work brought by route rerouting by a highly-automatic extracting and drawing function, and comprises the following steps:
The first step: automatically extracting path data from the line path object;
And a second step of: automatically extracting a compute pipeline cross-over from the pipeline segment object;
And a third step of: automatically extracting terrain section data from a terrain triangle network;
fourth step: automatically intercepting and converting the measured coordinate path diagram into a line coordinate path diagram;
fifth step: the extracted data is imported to automatically draw a pipeline horizontal section diagram.
Aiming at the problem that the cross section can not completely express the height distribution of the pipeline section, a novel pipeline section expression method is provided. The method expresses the height distribution of the pipeline on the section by the projection line segment of the pipeline section in the boundary range on the longitudinal section of the line center line. The projection section is drawn according to the actual pipe diameter (or specification) and the offset of the end points is marked.
Working principle: the forward drawing of the cable line engineering under the Revit platform can be changed from passive design to active design, the design quality can be grasped from the source, the cable laying is simulated in advance, the problem of cable laying before the cable design is solved, the production period is reduced, the production cost is reduced, the vertical section is automatically generated, the history of manually manufacturing the construction drawing is finished, the drawing efficiency is greatly improved, N cables can be laid simultaneously, each cable is independent, the change is convenient, the independence is strong, the cable diameter and the branching position of the cable can be effectively simulated, the cable laying path can be effectively simulated, the branching length of the cable can be provided, the space harmony of the cable in the electric power well and the bending property of the cable can be detected, whether the cable binding design is reasonable or not can be visually checked, and the three-dimensional overall intuitiveness of the cable laying is strong.
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. The forward direction drawing method of the cable line engineering under the Revit platform is characterized by comprising the following steps of:
s1: designing a cable channel;
S2: designing a buried pipe;
s3: leading in an original cable album;
S4: laying cables in batches;
S5: detecting the channel filling rate;
s6: and (5) finishing the laying.
2. The forward direction diagram method of cable plant engineering under a Revit platform according to claim 1, wherein the S1 cable channel design comprises a bridge database establishment and a cable database establishment, wherein the bridge database establishment requires bridge data required by preparation projects, and the cable database establishment requires cable data required by preparation projects.
3. The forward direction drawing method of cable line engineering under a Revit platform according to claim 1, wherein the step S3 of importing the original cable inventory requires the design of the original cable inventory.
4. The forward direction drawing method of cable line engineering under a Revit platform according to claim 1, wherein if the result of the detection of the filling rate of the S5 channel does not meet the requirement, the S4 batch cable laying is carried out again by modifying the channel or modifying the bridge first and then modifying the channel.
5. The forward direction drawing method of cable line engineering under a Revit platform according to claim 1, wherein a cable laying chart and a cable album meeting requirements are obtained after the S6 laying is completed.
6. The forward direction drawing method of cable line engineering under a Revit platform according to claim 1, wherein the step of importing the cable laying diagram meeting the requirements obtained after the step of S6 laying is completed into CAD software to generate a new pipeline plan comprises the following steps:
The first step: reading a pipeline point record;
and a second step of: reconstructing a pipeline segment;
and a third step of: drawing a pipeline plan view.
7. The forward direction drawing method of cable line engineering under a Revit platform according to claim 6, wherein the reading of the pipeline point record comprises spatial position and attribute of the pipeline point, connection of the pipeline point and attribute of the pipeline section, and the reading process is to judge whether the identification of the pipeline point is repeated or not.
8. The forward direction drawing method of cable line engineering under a Revit platform according to claim 7, wherein the pipeline segment reconstruction is to generate corresponding pipeline segment data according to pipeline point connection, and the repeated pipeline segment record is judged to be excluded in the generation process.
9. The forward direction drawing method of cable line engineering under a Revit platform according to claim 8, wherein the drawing the pipeline plan is to draw pipeline points and pipeline segments according to system pipeline configuration in CAD software and automatically symbolize pipeline point data and pipeline segment data, and simultaneously write attributes into the extension data of the entity according to attribute structure configuration.
10. The forward direction drawing method for cable wiring project under a Revit platform according to claim 9, wherein the data required for drawing the flat section drawing is automatically extracted from the plan view according to the pipeline route path, and then the flat section drawing is automatically drawn by using the data, comprising the steps of:
The first step: automatically extracting path data from the line path object;
And a second step of: automatically extracting a compute pipeline cross-over from the pipeline segment object;
And a third step of: automatically extracting terrain section data from a terrain triangle network;
fourth step: automatically intercepting and converting the measured coordinate path diagram into a line coordinate path diagram;
fifth step: the extracted data is imported to automatically draw a pipeline horizontal section diagram.
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