CN112364428A - BIM technology-based pre-stressed variable cross-section box girder steel bar collision detection method - Google Patents
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Abstract
A method for detecting collision of prestressed variable cross-section box girder steel bars based on a BIM technology. The detection method comprises the following steps: A. preparing data, namely collecting and arranging a main beam end reinforcing steel bar arrangement diagram, a main beam prestress arrangement diagram and a detailed structural diagram of a bridge main body to obtain basic data for establishing a model; B. establishing a model, namely establishing a bridge steel bar model by utilizing Revit software; C. model fusion, namely importing a collision detection model in Revit software into Navisvarks software; D. running collision detection, namely setting collision parameters in Navisvarks software and then carrying out running collision detection; E. and outputting a collision report. The method has the advantages that the collision detection is carried out on the steel bar model through the establishment of the three-dimensional model based on the BIM technology; according to the detection report, design data are optimized, construction is guided according to the three-dimensional visual drawing, unnecessary steel bar adjustment time is shortened, the construction period is shortened, and the construction operation cost is reduced.
Description
Technical Field
The invention relates to a steel bar collision detection method, in particular to a prestress variable cross-section box girder steel bar collision detection method based on a BIM technology.
Background
At present, the traditional variable cross-section box girder steel bars are bound on a construction site on the basis of a two-dimensional drawing, and a prestressed steel bundle pipeline and common steel bars are arranged according to drawing parameter data. Due to the limitation of the two-dimensional drawing, the problem of steel bar collision often occurs after the binding is finished, so that the steel bar binding cannot continue construction according to the drawing, the position of the steel bar needs to be adjusted, the collision of the rear steel bar is avoided, the workload of site construction is increased to a certain extent, the construction period is long, and the operation cost is increased.
Disclosure of Invention
The invention provides a prestress variable cross-section box girder steel bar collision detection method based on a BIM technology, aiming at overcoming the defects that the workload of field construction is increased, the construction period is long and the operation cost is increased due to the fact that the existing variable cross-section box girder steel bars are bound on the construction field on the basis of a two-dimensional drawing and the problem of steel bar collision occurs.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for detecting the collision of prestressed variable cross-section box girder steel bars based on a BIM technology comprises the following steps:
A. the preparation of the data is carried out,
collecting and arranging a main beam end reinforcing steel bar arrangement diagram, a main beam prestress arrangement diagram and a detailed structural diagram of a bridge main body to obtain basic data for establishing a model;
B. the model is built up by the modeling method,
building a bridge steel bar model according to a main beam end steel bar layout drawing and a main beam prestress layout drawing by using Revit software;
C. the model is fused with the model to obtain a model,
importing a collision detection model in Revit software into Navisvarks software;
D. the detection of a collision is run and,
setting collision parameters in Navisvarks software, and then carrying out operation collision detection;
E. outputting a collision report, and according to the collision report conclusion,
returning to the step B to adjust the design scheme when collision occurs;
when no collision occurs, collision detection is completed.
Further, the step B model is built in Revit software, and Revit projects comprise 2 or more than 2 basic models.
And further, the step B model building comprises a transverse prestressed steel bar model, a vertical prestressed steel bar model and a longitudinal prestressed steel bar model.
Further, in the step C model fusion,
b, exporting the collision detection item in the step B through an 'additional module' → 'external tool' → 'Navisvarks 2018' command in Revit software, wherein the export format is nwf;
and running Navisthroks software, clicking an opening command, selecting an exported collision detection nwf file, and completing the fusion of the model from Revit software to the Navisthroks software.
Further, the step D runs parameter setting in collision detection, and a "Clash detail" option in Navisworks software enters a "collision detection" window, which is set as follows:
the options "select a", "select B" are both set to "collision detection";
the option "type" is set to "hard bump";
the option "tolerance" is set to "0.001 m";
the option "link" is set to "none";
the option "composite object collision" check a check mark ".
Further, after the parameter setting in the step D is completed, clicking an operation detection option to perform collision detection;
and checking the collision detection operation result under the 'result' option column.
Further, in the step E of outputting a collision report,
when no collision is displayed in the collision report conclusion, collision detection is completed, and the construction stage is started according to the drawing;
and when the collision is shown in the collision report conclusion, returning to the step B to modify the model, adjusting the position of the model until no collision exists in the collision report conclusion, and then entering a construction stage according to the drawing.
The method has the advantages that the collision detection is carried out on the steel bar model through the establishment of the three-dimensional model based on the BIM technology; according to the detection report, the design data is optimized, and meanwhile, the construction is guided according to the three-dimensional visual drawing, so that the on-site bridge reinforcing steel bar binding is formed at one time, the unnecessary reinforcing steel bar adjusting time is reduced, the construction period is shortened, and the construction operation cost is reduced.
Drawings
FIG. 1 is a flow chart of a method for detecting the collision of prestressed variable cross-section box girder steel bars based on the BIM technology.
Detailed Description
The invention is further illustrated by the following figures and examples. However, it should be understood by those skilled in the art that the present invention is not limited to the specific embodiments listed, and should be included within the scope of the present invention as long as the spirit of the present invention is met.
See figure 1. The invention relates to a method for detecting the collision of prestressed variable cross-section box girder steel bars based on a BIM technology, which comprises the following steps:
A. the preparation of the data is carried out,
and collecting and arranging a main beam end reinforcing steel bar arrangement diagram, a main beam prestress arrangement diagram and a detailed structural diagram of the bridge main body to obtain basic data for establishing the model.
B. The model is built up by the modeling method,
and (4) building a bridge steel bar model by utilizing Revit software according to the main beam end steel bar layout and the main beam prestress layout.
C. The model is fused with the model to obtain a model,
and importing the collision detection model in Revit software into Navisvarks software.
D. The detection of a collision is run and,
setting collision parameters in Navisvarks software, and then running collision detection;
E. outputting a collision report, and according to the collision report conclusion,
returning to the step B to adjust the design scheme when collision occurs;
when no collision occurs, the collision detection is completed.
Further, the step B model is built in Revit software, and Revit projects comprise 2 or more than 2 basic models.
And step B, establishing a model, wherein the model comprises a transverse prestressed steel bar model, a vertical prestressed steel bar model and a longitudinal prestressed steel bar model.
Further, in the step C model fusion, the collision detection item in the step B is exported by a command of "additional module" → "external tool" → "Navisworks 2018" in the Revit software, and the export format is nwf.
And running Navisthroks software, clicking an opening command, selecting an exported collision detection nwf file, and completing the fusion of the model from Revit software to the Navisthroks software.
Further, the step D runs parameter setting in collision detection, and a "Clash detail" option in Navisworks software enters a "collision detection" window, which is set as follows:
the options "select a", "select B" are both set to "collision detection";
the option "type" is set to "hard bump";
the option "tolerance" is set to "0.001 m";
the option "link" is set to "none",
the option "composite object collision" check a check mark ".
After the parameter setting in the step D is finished, clicking an operation detection option to perform collision detection; and the collision detection operation result is viewed under the result option bar.
Further, in the step E of outputting a collision report,
when no collision is displayed in the collision report conclusion, collision detection is finished, and a construction stage is started according to a drawing;
and when the collision is shown in the collision report conclusion, returning to the step B to modify the model, adjusting the position of the model until no collision exists in the collision report conclusion, and then entering a construction stage according to the drawing.
Example (b):
the invention discloses a method for detecting the collision of prestressed variable cross-section box girder reinforcing steel bars based on a BIM technology, which comprises the following steps:
step A, data preparation
Collecting and arranging a main girder end reinforcing steel bar arrangement diagram, a main girder prestress arrangement diagram and a detailed structural diagram of a bridge main body, and collecting and arranging required drawings by screening to obtain basic data for establishing a model;
step B, model building
The model is built in Revit software, and Revit projects comprise 2 or more than 2 basic models.
And B, establishing a model in the step B, wherein the model comprises a transverse prestressed steel bar model, a vertical prestressed steel bar model and a longitudinal prestressed steel bar model.
And (4) building a model for the whole bridge reinforcing steel bar by utilizing Revit software according to the reinforcing steel bar layout at the end of the main beam and the prestress layout of the main beam.
A Revit project is composed of many families, which are the base models. The family creation function is entered in Revit by a command of "family" → "new construction" → "metric system common model", and the family is saved and named No. 0.
Firstly, a corresponding model is established according to the drawing size through a 'stretching' or 'lofting' command in a functional area.
The established family is then imported into the project via a "load to project" command.
And establishing a transverse prestressed reinforcement model, a vertical prestressed reinforcement model and a longitudinal prestressed reinforcement model respectively by the same method, and importing the models into projects.
Click on the "save" icon, save the item and name "collision detection".
Step C, model fusion
And importing the collision detection model in Revit software into Navisvarks software for model fusion.
And B, exporting the collision detection item in the step B through an 'additional module' → 'external tool' → 'Navisvarks 2018' command in Revit software, wherein the export format is nwf.
And running Navisthroks software, clicking an opening command, selecting an exported collision detection nwf file, and completing the fusion of the model from Revit software to the Navisthroks software.
Step D, running collision detection
First, collision parameters are set in the Navisworks software.
In Navisthrocks software, entering a collision detection window from a Clash Detactive option, and setting the following settings:
the options "select a", "select B" are both set to "collision detection";
the option "type" is set to "hard bump";
the option "tolerance" is set to "0.001 m";
the option "link" is set to "none";
the option "composite object collision" check a check mark ".
After parameter setting is completed, clicking an operation detection option to perform operation collision detection;
and checking the collision detection operation result under the 'result' option column.
E. And outputting a collision report, setting the report type as the current test and the report format as HTML (form) under a 'report' option column, and clicking a 'write report' option to finish the output of the collision report.
In view of the collision report conclusion,
and when no collision is displayed in the collision report conclusion, collision detection is completed, and the construction stage is started according to the drawing.
And when the collision is shown in the collision report conclusion, returning to the step B to modify the model, adjusting the position of the model until no collision exists in the collision report conclusion, and then entering a construction stage according to the drawing.
Revit software and Navisthrocks software in BIM software are utilized to convert a two-dimensional drawing into a three-dimensional model, collision detection is carried out on prestressed reinforcements according to a flow, and then reinforcement design is optimized. The steel bars can be simulated in an integral family mode, each steel bar can be made into a family, then the steel bars are spliced in a project, and finally the steel bars are led into Navisvarks software for collision detection.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.
Claims (7)
1. A method for detecting the collision of prestressed variable cross-section box girder steel bars based on a BIM technology comprises the following steps:
A. the preparation of the data is carried out,
collecting and arranging a main beam end reinforcing steel bar arrangement diagram, a main beam prestress arrangement diagram and a detailed structural diagram of a bridge main body to obtain basic data for establishing a model;
B. the model is built up by the modeling method,
building a bridge steel bar model according to a main beam end steel bar layout drawing and a main beam prestress layout drawing by using Revit software;
C. the model is fused with the model to obtain a model,
importing a collision detection model in Revit software into Navisvarks software;
D. the detection of a collision is run and,
setting collision parameters in Navisvarks software, and then carrying out operation collision detection;
E. outputting a collision report, and according to the collision report conclusion,
returning to the step B to adjust the design scheme when collision occurs;
when no collision occurs, collision detection is completed.
2. The method for detecting the collision of the prestressed variable cross-section box girder steel bars based on the BIM technology as claimed in claim 1, is characterized in that: the step B model is built in Revit software, and Revit projects comprise 2 or more than 2 basic models.
3. The method for detecting the collision of the prestressed variable cross-section box girder steel bars based on the BIM technology as claimed in claim 2, wherein the method comprises the following steps: and B, establishing a model in the step B, wherein the model comprises a transverse prestressed steel bar model, a vertical prestressed steel bar model and a longitudinal prestressed steel bar model.
4. The method for detecting the collision of the prestressed variable cross-section box girder steel bars based on the BIM technology as claimed in claim 3, wherein the method comprises the following steps: in the step C model fusion, the model is fused,
b, exporting the collision detection item in the step B through an 'additional module' → 'external tool' → 'Navisvarks 2018' command in Revit software, wherein the export format is nwf;
and running Navisthroks software, clicking an opening command, selecting an exported collision detection nwf file, and completing the fusion of the model from Revit software to the Navisthroks software.
5. The method for detecting the collision of the prestressed variable cross-section box girder steel bars based on the BIM technology as claimed in claim 1, is characterized in that: and D, operating parameter setting in collision detection, and enabling a 'Clash detail' option in Navisthroks software to enter a 'collision detection' window, wherein the setting is as follows:
the options "select a", "select B" are both set to "collision detection";
the option "type" is set to "hard bump";
the option "tolerance" is set to "0.001 m";
the option "link" is set to "none";
the option "composite object collision" check a check mark ".
6. The BIM technology-based pre-stressed variable cross-section box girder steel bar collision detection method as claimed in claim 5, wherein the method comprises the following steps: after the parameter setting in the step D is finished, clicking an operation detection option to perform collision detection;
and checking the collision detection operation result under the 'result' option column.
7. The BIM technology-based pre-stressed variable cross-section box girder steel bar collision detection method as claimed in claim 6, wherein the method comprises the following steps: in the output of the collision report at said step E,
when no collision is displayed in the collision report conclusion, collision detection is completed, and the construction stage is started according to the drawing;
and when the collision is shown in the collision report conclusion, returning to the step B to modify the model, adjusting the position of the model until no collision exists in the collision report conclusion, and then entering a construction stage according to the drawing.
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