Reticulated shell structure modeling method

Abstract

The invention provides a reticulated shell structure modeling method. The method comprises the following steps of determining a required member specification parameter table, creating the member specification parameter table as a member parameter table, creating a member parametric template by using the member parameter table, and importing the parametric template; and setting a calling environment, creating a three-dimensional model, and performing collision detection on the three-dimensional model. Reticulated shell structure three-dimensional models of massive members can be quickly built,so that the modeling efficiency is greatly improved; the model precision is required to reach the member processing level, and information of each member can be subjected to statistics accurately, thereby achieving the purpose of high-precision modeling; spatial collision check can be performed based on the reticulated shell structure three-dimensional models, thereby avoiding mistake, omission, collision and deficiency of reticulated shells; and the three-dimensional models can be applied to the member processing discharging and the field construction installation locating, thereby achievingthe purposes of improving the production efficiency and guiding the reticulated shell construction.

Description

technical field [0001] The invention relates to a method for modeling a reticulated shell structure, which belongs to the technical field of industrial and civil buildings. Background technique [0002] The reticulated shell structure is a curved grid structure, which has the characteristics of both the bar system structure and the thin shell structure. The force is reasonable, and it can realize a large span and a beautiful appearance at the same time, and can use factory prefabricated components to realize industrial production. , the comprehensive technical and economic indicators are good, and it is a spatial structure with good development prospects. [0003] When traditional CAD software is used for reticulated shell structure design, due to the large number of reticulated shell structural members and complex spatial layout, the conventional two-dimensional diagram expression method cannot completely and accurately express the design information, especially the arrange...

AI Technical Summary

Problems solved by technology

[0003] When traditional CAD software is used for reticulated shell structure design, due to the large number of reticulated shell structural members and complex spatial layout, the conventional two-dimensional diagram expression method cannot completely and accurately express the design information, especially the layout of the rods on the nodes

Because the deviation of the geometric dimensions of the members and nodes and the deviation of the curved surface have a great influence on the internal force, overall stability and construction accuracy of the reticulated shell, it brings certain difficulties to the structural design and construction, resulting in insufficient expression of component information and difficult Guidance on manufacturing and installation, engineering quantity statistics, time-consuming and labor-intensive issues

The traditional design method gives limited information on members and nodes, which cannot be accurate to the machining accuracy, and it is difficult to provide useful help for the installation and positioning of components on the construction site, and it is also impossible to perform space collision checks

For example, the design often uses TEKLA, MST and other steel grid design and calculation software, focusing on the structural calculation and analysis of the grid, the continuity of the model is not enough, and there is still a distance for refined modeling

Therefore, when the number of components reaches the order of tens of thousands, it takes a lot of manpower and material resources to refine the modeling of massive components

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