CN112668130A - Contact net modeling method for subway section tunnel power supply specialty - Google Patents
Contact net modeling method for subway section tunnel power supply specialty Download PDFInfo
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Abstract
The invention discloses a contact net modeling method used in the power supply specialty of a subway interval tunnel, which comprises the following steps: s1, generating a three-dimensional datum line according to the X, Y, Z coordinate value of the track center line of the subway interval tunnel; s2, based on the reference line generated in the step S1, solving a contact line and a busbar solid model according to the mileage value, the suspension bracket arrangement point and the pull-out value designed in the design drawing; and S3, calculating the arrangement points of the overhead ground wire shoulder racks according to the position relation between the overhead ground wire shoulder racks and the suspension support and the requirement on the distance between the overhead ground wire shoulder racks and the rail surface 4300mm, and accordingly establishing an overhead ground wire model. The method can solve the problems of large workload of manual modeling, difficult manual modeling and model accuracy.
Description
Technical Field
The invention relates to the technical field of contact network modeling, in particular to a contact network modeling method used in the power supply specialty of a subway interval tunnel.
Background
The requirements for benchmark positioning of an infrastructure three-dimensional model and modeling of each professional in a subway interval are increasing day by day through Revit platform software, interval modeling realized by BIM engineers through various technical means can barely complete interval power supply professional modeling tasks, and the problem that interval power supply professional modeling cannot be still solved even if the application capability level of part of engineers is not up to standard.
At present, professional modeling of interval power supply can be completed through a technical route of Revit + Dynamo, but the problems of large model size and complex operation exist, higher scripting language editing requirements are provided for modeling technicians, and the problems of inaccurate positioning, low efficiency and the like exist when each professional modeling of intervals is performed through native Revit.
At present, a modeling worker establishes a BIM model on the basis of identifying drawing information according to design drawings such as professional plane drawings, section drawings, large pattern drawings and the like. The scheme is better for operation in the interval tunnel with short interval, less professions and less components. For the section tunnels with long sections, multiple specialties and multiple members, such as the power supply specialties, the problems of large workload of manual modeling, difficulty in ensuring model accuracy and the like exist.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a contact net modeling method for the power supply specialty of the subway section tunnel.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a contact network modeling method for the power supply specialty of a subway section tunnel comprises the following steps:
s1, generating a three-dimensional datum line according to the X, Y, Z coordinate value of the track center line of the subway interval tunnel;
and S2, based on the reference line generated in the step S1, solving a contact line and busbar solid model according to the mileage value, the suspension bracket arrangement point and the pull-out value designed in the design drawing:
calculating coordinates of a corresponding mileage position on a reference line according to the mileage value, then carrying out horizontal deviation on the calculated coordinate points according to the pull-out value to obtain new control points, and sequentially connecting all the new control points to create a new control curve; according to the arrangement points of the suspension support, carrying out vertical deviation on the new control curve to obtain an actual control curve, wherein the actual control curve is a contact line; a section is formed between the arrangement points of the two suspension supports, the actual control curve is segmented according to the length of each section, the actual control point is calculated, the bus bar outline is established according to the actual control point, and the two adjacent bus bar outlines are fused to form a bus bar entity model;
and S3, calculating the arrangement points of the overhead ground wire shoulder racks according to the position relation between the overhead ground wire shoulder racks and the suspension support and the requirement on the distance between the overhead ground wire shoulder racks and the rail plane 4300mm, and accordingly establishing an overhead ground wire model.
Further, the method further comprises the step S4 of generating models of the sections of the overhead line system according to the steps S1-S3, and finally integrating the models of the sections of the overhead line system to obtain an integral overhead line system model.
The invention has the beneficial effects that: by the method, the contact line modeling of the power supply specialty of the subway tunnel section is carried out, the contact line, the busbar entity model and the overhead ground wire model can be quickly and accurately generated by inputting various design data in a design drawing, the workload can be effectively reduced, the working efficiency can be improved, and the modeling accuracy can be improved.
Detailed Description
The present invention will be further described below. It should be noted that the present embodiment is premised on the technical solution, and detailed description and specific implementation are given, but the scope of protection of the present invention is not limited to the present embodiment.
The embodiment provides a contact network modeling method for the power supply specialty of a tunnel between subway sections, which comprises the following steps:
s1, generating a three-dimensional datum line according to the X, Y, Z coordinate value of the track center line of the subway interval tunnel;
and S2, based on the reference line generated in the step S1, solving a contact line and busbar solid model according to the mileage value, the suspension bracket arrangement point and the pull-out value designed in the design drawing:
calculating coordinates of a corresponding mileage position on a reference line according to the mileage value, then carrying out horizontal deviation on the calculated coordinate points according to the pull-out value to obtain new control points, and sequentially connecting all the new control points to create a new control curve; according to the arrangement points of the suspension support, carrying out vertical deviation on the new control curve to obtain an actual control curve, wherein the actual control curve is a contact line; a section is formed between the arrangement points of the two suspension supports, the actual control curve is segmented according to the length of each section, the actual control point is calculated, the bus bar outline is established according to the actual control point, and the two adjacent bus bar outlines are fused to form a bus bar entity model;
s3, calculating arrangement points of the overhead ground wire shoulder racks according to the position relation between the overhead ground wire shoulder racks and the suspension support and the requirement on the distance between the overhead ground wire shoulder racks and the rail plane 4300mm, and accordingly establishing an overhead ground wire model;
and S4, generating models of all sections of the overhead line system according to the steps S1-S3, and finally integrating the models of all the sections of the overhead line system to obtain an integral overhead line system model.
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (2)
1. A contact network modeling method for the power supply specialty of a tunnel between subway sections is characterized by comprising the following steps:
s1, generating a three-dimensional datum line according to the X, Y, Z coordinate value of the track center line of the subway interval tunnel;
and S2, based on the reference line generated in the step S1, solving a contact line and busbar solid model according to the mileage value, the suspension bracket arrangement point and the pull-out value designed in the design drawing:
calculating coordinates of a corresponding mileage position on a reference line according to the mileage value, then carrying out horizontal deviation on the calculated coordinate points according to the pull-out value to obtain new control points, and sequentially connecting all the new control points to create a new control curve; according to the arrangement points of the suspension support, carrying out vertical deviation on the new control curve to obtain an actual control curve, wherein the actual control curve is a contact line; a section is formed between the arrangement points of the two suspension supports, the actual control curve is segmented according to the length of each section, the actual control point is calculated, the bus bar outline is established according to the actual control point, and the two adjacent bus bar outlines are fused to form a bus bar entity model;
and S3, calculating the arrangement points of the overhead ground wire shoulder racks according to the position relation between the overhead ground wire shoulder racks and the suspension support and the requirement on the distance between the overhead ground wire shoulder racks and the rail plane 4300mm, and accordingly establishing an overhead ground wire model.
2. The method of claim 1, further comprising the steps of S4, generating models of the sections of the catenary according to the steps S1-S3, and finally integrating the models of the sections of the catenary to obtain the overall catenary model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011617542.5A CN112668130A (en) | 2020-12-30 | 2020-12-30 | Contact net modeling method for subway section tunnel power supply specialty |
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| CN202011617542.5A CN112668130A (en) | 2020-12-30 | 2020-12-30 | Contact net modeling method for subway section tunnel power supply specialty |
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Cited By (2)
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| CN113468649A (en) * | 2021-07-28 | 2021-10-01 | 广州地铁设计研究院股份有限公司 | BIM design method for rail transit power supply system |
| CN116379926A (en) * | 2023-05-31 | 2023-07-04 | 中国铁建电气化局集团第五工程有限公司 | Trackless measurement method and system for contact net of circular shield tunnel and electronic equipment |
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Application publication date: 20210416 |