CN110688701B - Dynamo-based tunnel structure model modeling method - Google Patents
Dynamo-based tunnel structure model modeling method Download PDFInfo
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Abstract
The invention discloses a tunnel structure model modeling method based on Dynamo, which comprises the following steps: acquiring coordinates of each central point on a central line of a tunnel to be built; opening Revit software, programming by using Dynamo, and reading coordinates of each center point to establish a tunnel center line; equally dividing the central line of the tunnel into a plurality of segments; establishing a segment group of the tunnel to be built according to the segment length and the cross section form of the tunnel to be built; programming by Dynamo, and calling segment families to be instantiated on given coordinates of the separation control points according to the central line of the tunnel and the separation control points on the segments to generate a tunnel main body structure model; and constructing a side channel segment family of the tunnel to be built and instantiating the side channel segment family to a control point of the side channel to complete the whole tunnel structure model. The invention has the advantages that: based on Dynamo visual programming tools and in combination with the structural characteristics of tunnel engineering, the method realizes the rapid and accurate establishment of a tunnel structure model on a Revit platform, simplifies the modeling steps of the tunnel structure model and improves the modeling efficiency.
Description
Technical Field
The invention belongs to the technical field of tunnel structure models, and particularly relates to a tunnel structure model modeling method based on Dynamo.
Background
With the rapid popularization of building information model (Building Information Modeling, BIM) technology in the field of civil engineering, its application in tunnel construction is also gradually deepening. The basic information of the tunnel, including the cross section, the structure, the length and the like of the tunnel, can be contained in the whole BIM model through the BIM technology, the visualization and the parameterization of the tunnel model are realized, and in the application of the tunnel BIM, the establishment of the BIM model is a great problem.
BIM technology was proposed by Autodesk in 2002, and its corresponding BIM modeling software is Revit, which is mainly oriented to civil architecture. The tunnel main body structure is different from civil buildings, and is mainly characterized in that: (1) The tunnel cross section is various in form and adopts curve patterns such as horseshoe shape and ellipse, but the cross section is relatively fixed for a specific tunnel structure main body; (2) The tunnel body structure is mainly generated by depending on the tunnel center line, and the tunnel center line is generally a longer space curve. In the tunnel construction process, the mountain tunnel, the subway tunnel and the submarine tunnel are built section by section. Therefore, a better tunnel modeling mode is to divide the tunnel into a plurality of small sections by replacing the curve with a straight curve. The Revit is difficult to meet the requirement of accurate modeling of a tunnel structure, a large amount of mechanized repeated modeling work also increases cost, and great inconvenience is brought to the adjustment and modification of the model, which restricts the development of BIM technology in tunnel engineering, so how to quickly and accurately build the tunnel structure model is important to realize the parameterization modification of the model.
Disclosure of Invention
According to the defects of the prior art, the invention provides a Dynamo-based tunnel structure model modeling method, which divides a tunnel into a plurality of segments according to a tunnel center line, each segment is generated and modified in a family form, and finally the generation of the whole tunnel structure model is realized.
The invention is realized by the following technical scheme:
the tunnel structure model modeling method based on Dynamo is characterized by comprising the following steps of:
s1: acquiring coordinates of each central point on a central line of a tunnel to be built, and respectively inputting the coordinates of each central point into three tables of Excel according to an X axis, a Y axis and a Z axis;
s2: opening Revit software, programming by utilizing Dynamo, reading the coordinates of each central point in the three tables to establish a spline curve, and taking the spline curve as a tunnel center line;
s3: equally dividing the central line of the tunnel into a plurality of segments, wherein separation control points are arranged at two ends of each segment;
s4: establishing a segment group of the tunnel to be established according to the segment length and the cross section form of the tunnel to be established;
s5: programming by Dynamo, and calling the segment family to be instantiated to a given coordinate of the separation control point according to the tunnel central line and the separation control point on each segment to generate a tunnel main body structure model;
s6: and according to the position parameters of the bypass channel of the tunnel to be built, finishing and converting the position parameters into coordinates, inputting the coordinates into Excel, constructing a bypass channel segment family, calling the coordinates of the control points of the bypass channel through Dynamo, and instantiating the bypass channel segment family to the control points of the bypass channel so as to complete the whole tunnel structure model on the basis of the tunnel main structure model.
In the step S4, the affiliated facilities in the tunnel to be built are built as nested families, and the nested families are placed at the corresponding positions of the segmented families.
In the step S4, according to the segment length of the tunnel to be built and a plurality of different cross-sectional forms, segment families of the tunnel to be built corresponding to the different cross-sectional forms are built.
The modeling method further includes step S7: after the tunnel structure model is completed, the line of the tunnel center line is adjusted by modifying the center point coordinate data in the three tables of the Excel, the cross section form of the tunnel structure model is adjusted by selecting different segment families, and the modification of the tunnel structure model is realized by modifying the segment families, the nested families, the spacing of the segments and the separation control points.
The invention has the advantages that:
(1) The modeling can be quickly and accurately performed according to the tunnel center line coordinates and the cross section information, so that a large number of mechanized repeated modeling works are reduced, and the modeling efficiency is improved;
(2) Parameterized structural model, modularized Dynamo code, which can quickly and accurately adjust and modify the route, cross-sectional form and accessory facilities of the tunnel structural model;
(3) The modeling technology is wide in application range, and can be applied to different types of tunnels such as railway tunnels, subway tunnels, highway tunnels, water delivery tunnels and the like, and also can be applied to tunnels with different structural forms such as spliced lining and composite lining structures.
Drawings
FIG. 1 is a schematic diagram of a modeling workflow of a tunnel structure model in the present invention;
FIG. 2 is a schematic diagram of the present invention for center point coordinates on the upstream and downstream lines entered into an Excel table;
FIG. 3 is a schematic diagram of the centerline segments of the tunnel of the upstream and downstream lines of the present invention;
FIG. 4 is a schematic view of a segment ring segment family of the present invention;
FIG. 5 is a schematic diagram of a tunnel structure model according to the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
examples: as shown in fig. 1-5, the present embodiment relates to a tunnel structure model modeling method based on Dynamo, specifically to a Dynamo for Revit visual programming tool, which includes the following steps:
s1: center point coordinate data processing
The tunnel cross section is basically generated by relying on the central line of the tunnel although the tunnel cross section is five-flower eight-door, so that the central point coordinate of the tunnel is important; firstly, carrying out coordinate system unification on collected coordinate data in measurement or other data, and then shifting the coordinates of each point according to the size of a tunnel section and a measurement datum point to obtain a tunnel center point coordinate corresponding to the point, so as to obtain each center point coordinate on a center line of a tunnel to be built, and respectively inputting each center point coordinate into three tables of Excel according to an X axis, a Y axis and a Z axis;
in this embodiment, the length of the tunnel to be built is 0.6 km, which is divided into two tunnel lines of an uplink line and a downlink line, and according to the completion measurement data of the subway tunnel, the coordinate data of one hundred measurement points are processed, and the obtained central point coordinates are divided into 6 tables and sequentially input into Excel, that is, the uplink line has 3 tables of an X axis, a Y axis and a Z axis, and the downlink line has 3 tables of the X axis, the Y axis and the Z axis, as shown in fig. 2.
S2: establishing tunnel centerline
Opening Revit software, programming by utilizing Dynamo, reading tunnel center point coordinates in Excel to establish a spline curve, and taking the spline curve as a tunnel center line of a tunnel to be established;
s3: centerline segment partitioning
Dividing a tunnel to be built into a plurality of segments with the same length during modeling and then splicing the segments to form the tunnel, particularly equally dividing the central line of the tunnel to be built into a plurality of segments, particularly a subway shield tunnel, wherein the main assembly of the tunnel to be built is a shield segment, so that in the embodiment, the length of the segment is 1200mm as the segment length, the reference line of the central line of the tunnel is divided into separation control points, and the divided central line of the tunnel is shown in figure 3;
s4: establishment of segment families
According to the sectional length and the cross section form of the tunnel to be built, the sectional group (namely the segment group) of the tunnel to be built is built, and the fact that under the condition that a plurality of different cross section forms exist in the tunnel to be built, the sectional group also has a plurality of the same cross section forms and corresponds to each other one by one; meanwhile, constructing auxiliary facilities in the tunnel to be built as nested families, and placing the nested families on corresponding positions of the segmented families;
in the embodiment, when a segment group is established, a 'self-adaptive metric conventional model' group template is adopted, the length of a segment is 1200mm as a control parameter, two self-adaptive points are adopted, the length between the two points is equal to the length of a segment, 6 shield segments are spliced into segment rings in sequence, and a segmented main body structure is established, as shown in fig. 4; then, arranging auxiliary facilities drainage ditches, cable pipes and the like of the tunnel to be built at corresponding positions in a nested group mode, so as to construct a segment ring segment group of the whole tunnel to be built; establishing a parameterized family of components with high use frequency, naming family files by the characteristics and the structure types of the parameterized family files, and establishing a family file database of a tunnel structure model, such as a rectangular drainage ditch, wherein the parameterized family is driven by three parameters of width, depth and length, and can be suitable for rectangular drainage ditches in most tunnels;
s5: lofting to form tunnel main body structure model
Programming by Dynamo, calling segment ring segment group instantiation in the previous step to a coordinate of a separation control point according to the existing tunnel center line reference line and the separation control point, and generating a tunnel main body structure model, as shown in fig. 5;
s6: placing a family of side channels
According to the position parameters of the bypass channel of the tunnel to be built, the position parameters are tidied and converted into coordinates, the coordinates are input into Excel, a bypass channel segment family is built, the coordinates of the control points of the bypass channel are called through Dynamo, and the bypass channel segment family is instantiated to the control points of the bypass channel, so that the whole tunnel structure model is completed on the basis of the tunnel main body structure model;
s7: adjusting and modifying models
After the whole tunnel structure model is completed, the line of the central line of the tunnel is adjusted by modifying the central point coordinate data in three tables of Excel, the cross section form of the tunnel structure model is adjusted by selecting segment families with different cross section forms, and the detail of the tunnel structure model is modified by modifying segment families, nested families, the spacing of the segments and separation control points.
The effective effects of this embodiment are: based on Dynamo visual programming tools and in combination with the structural characteristics of tunnel engineering, the technology for quickly and accurately building the tunnel structure model on the Revit platform is realized, the modeling steps of the tunnel structure model are simplified, the modeling efficiency is improved, and the further development of BIM technology in tunnel engineering is facilitated.
Claims (1)
1. The tunnel structure model modeling method based on Dynamo is characterized by comprising the following steps of:
s1: acquiring coordinates of each central point on a central line of a tunnel to be built, and respectively inputting the coordinates of each central point into three tables of Excel according to an X axis, a Y axis and a Z axis;
s2: opening Revit software, programming by utilizing Dynamo, reading the coordinates of each central point in the three tables to establish a spline curve, and taking the spline curve as a tunnel center line;
s3: equally dividing the central line of the tunnel into a plurality of segments, wherein separation control points are arranged at two ends of each segment;
s4: establishing a segment group of the tunnel to be established according to the segment length and the cross section form of the tunnel to be established; constructing auxiliary facilities in the tunnel to be constructed as nested families, and placing the nested families on corresponding positions of the segmented families; establishing a segment group of the tunnel to be built corresponding to different cross section forms according to the segment length of the tunnel to be built and a plurality of different cross section forms;
s5: programming by Dynamo, and calling the segment family to be instantiated to a given coordinate of the separation control point according to the tunnel central line and the separation control point on each segment to generate a tunnel main body structure model;
s6: according to the position parameters of the bypass channel of the tunnel to be built, the position parameters are tidied and converted into coordinates and then are input into Excel, a bypass channel segment family is built, the coordinates of the control points of the bypass channel are called through Dynamo, and the bypass channel segment family is instantiated to the control points of the bypass channel, so that the whole tunnel structure model is completed on the basis of the tunnel main structure model;
s7: after the tunnel structure model is completed, the line of the tunnel center line is adjusted by modifying the center point coordinate data in the three tables of the Excel, the cross section form of the tunnel structure model is adjusted by selecting different segment families, and the modification of the tunnel structure model is realized by modifying the segment families, the nested families, the spacing of the segments and the separation control points.
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| CN112214823B (en) * | 2020-10-22 | 2024-05-10 | 淮安市水利勘测设计研究院有限公司 | Aqueduct modeling method based on Revit+ Dynamo |
| CN112417562B (en) * | 2020-11-23 | 2023-05-05 | 潍柴动力股份有限公司 | Dynamo-based earthwork construction modeling method and device |
| CN112685809A (en) * | 2020-12-10 | 2021-04-20 | 上海燃气工程设计研究有限公司 | BIM technology-based method for simulating construction process of gas pipeline in tunnel |
| CN112943364B (en) * | 2021-03-02 | 2023-04-28 | 云南省交通规划设计研究院有限公司 | Dynamo and Revit-based parameterized modeling method for long tunnel |
| CN113408042B (en) * | 2021-04-14 | 2024-03-29 | 南京市市政设计研究院有限责任公司 | BIM-based shield segment parameterization drawing generation method and system |
| CN116561859B (en) * | 2023-05-10 | 2023-12-19 | 华设设计集团股份有限公司 | Modeling method of roads, bridges and tunnels based on Revit |
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Address after: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Address before: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee before: SGIDI ENGINEERING CONSULTING (Group) Co.,Ltd. |