Shield tunnel BIM parametric modeling and lightweight processing method

A parametric modeling and shield tunnel technology, applied in the field of BIM parametric modeling and lightweight processing of shield tunnels, can solve problems such as poor system operation, and achieve the effect of reducing the number and processing.

Active Publication Date: 2019-03-19
CHINA RAILWAY LIUYUAN GRP CO LTD
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a shield tunnel BIM parametric modeling and lightweight processing method, on the basis of retaining segment number, ring number and other attribute parameters, so that the overall model of the tunnel can reach the lightweight standard and meet the application requirements , can run smoothly on browsers and mobile terminals, and effectively solve problems such as poor system operation caused by too large a tunnel model

Method used

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  • Shield tunnel BIM parametric modeling and lightweight processing method

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Embodiment 1

[0036] In the Dalian Metro Line 5 project - the shield tunnel BIM application project of the Suoyu Bay cross-sea section, the shield tunnel BIM parametric modeling and lightweight processing method of the present invention is applied to build a model of the tunnel and perform lightweight processing.

[0037] Firstly, the model is established, and the REVIT modeling tool is used to establish the tunnel segment model, and the model is parametrically processed, including two parts: the parameterization of the segment name and number and the parameterization of the segment rotation angle.

[0038] (1) Parametrization of the segment naming label: number the segment, preset a parameter in the segment model, and mark the specific name of the segment: top segment F; adjacent segment L1 / L2; standard segment B1 / B2 / B3 / B4 / B5.

[0039] (2) Parameterization of segment rotation angle: such as figure 2 As shown, according to the design drawings, the rotation angles of the 8 segments are pa...

Embodiment 2

[0050] In the BIM cloud platform for the construction management of the undersea tunnel of Dalian Metro Line 5, the built REVIT shield tunnel model is directly used, and the number of models that need to be referenced can reach tens of thousands; with the lightweight model, only 13 models are actually referenced, which is greatly reduced the number of models. After testing: the WebGL shield tunnel model generated in lightweight mode is only 10M, but the WebGL shield tunnel model generated in lightweight mode reaches 890M, and the lightweight ratio reaches 1:90.

[0051] In terms of time efficiency, it takes about 1-2 hours to directly use the established REVIT shield tunnel model, while the WebGL shield tunnel model generated in lightweight mode takes 10 minutes, which greatly reduces the time for model generation. Specifically, after lightweight processing, the number of 3D faces that the WebGL engine needs to read is very small, only 8 slices of a shield ring; while directly...

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Abstract

The invention discloses a shield tunnel BIM parametric modeling and lightweight processing method. The invention includes firstly, establishing an REVIT tunnel family library model; carrying out parameterization processing on the REVIT tunnel family library model; and carrying out coordinate transformation on the coordinates of the tunnel center line; the method comprises the steps that firstly, an urban construction coordinate system is converted into a WGS84 coordinate system, then an REVIT tunnel family library model is converted into a WebGL model through an algorithm, lightweight processing is carried out, duct piece self-defined parameters are reserved, finally, a generated tunnel overall lightweight information model is imported into a platform to be applied, and duct piece parameters are displayed. According to the shield tunnel BIM parametric modeling and lightweight processing method, on the basis that attribute parameters such as segment numbers and ring numbers are reserved, the overall tunnel model reaches the lightweight standard, the application requirement is met, smooth operation can be achieved on a browser and a mobile terminal, and the problem that system operation is not smooth due to the fact that the tunnel model is too large is effectively solved.

Description

technical field [0001] The invention relates to the technical field of shield tunnel construction safety risk management, in particular to a shield tunnel BIM parametric modeling and lightweight processing method. Background technique [0002] In recent years, the development of underground space has developed rapidly. In the field of subway construction, shield construction technology has been widely used in the construction process of tunnel sections. Faced with increasingly heavy subway construction tasks and complex and changeable construction risks, it is necessary to explore scientific and effective research and development. The technical means and methods of shield construction safety and quality monitoring and management have become an urgent task in the daily management of subway tunnel engineering construction. [0003] In the tunnel construction project, each ring of the tunnel is composed of a fixed number of segments, and each segment contains relevant parameter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13
Inventor 付功云张佩竹青舟杨喆蒋卓鹏袁文祥
Owner CHINA RAILWAY LIUYUAN GRP CO LTD
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