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Grassshopper-based space circular steel pipe intersecting welding joint parametric modeling method

A technology of parametric modeling and round steel pipes, which is applied in the field of building structure modeling, can solve the problems of slow modeling, error-prone, and low efficiency, and achieve the effect of improving modeling speed and accuracy

Active Publication Date: 2020-06-23
中南建筑设计院股份有限公司
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Problems solved by technology

In the past, designers often manually established three-dimensional models of nodes in finite element analysis software for calculation and analysis. This modeling method is not only slow in modeling speed and low in efficiency, but also prone to errors when there are many nodes.

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  • Grassshopper-based space circular steel pipe intersecting welding joint parametric modeling method
  • Grassshopper-based space circular steel pipe intersecting welding joint parametric modeling method
  • Grassshopper-based space circular steel pipe intersecting welding joint parametric modeling method

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Such as figure 1 As shown, the present invention provides a parametric modeling method for intersecting welding joints of space round steel pipes based on Grasshopper, and the specific flow chart is as follows figure 1 As shown, the detailed steps are as follows:

[0032] 1) Establish the central axis model of the node according to the starting point coordinates of each member of the node, such as figure 2 shown;

[0033] 2) Establish a spherical surface with the center of the node as the center and 1000mm as the radius, use the spherical surface to cut the central axis of the rod and remove the part located outs...

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Abstract

The invention discloses a Grassshopper-based spatial circular steel pipe intersecting welding joint parametric modeling method. The method comprises the following steps: 1) establishing a joint central axis model according to starting point coordinates of all rod pieces of a joint; 2) trimming the central axis of the rod piece according to a set length, and generating a circular tube curved surface model according to the section size of the rod piece; 3) cutting the circular tube curved surface model according to the following steps, and removing redundant curved surfaces to obtain a circularsteel tube intersecting welding joint curved surface model; and 4) importing the curved surface model of the circular steel tube intersecting welding node into finite element analysis software to perform finite element analysis on the node, and verifying the bearing capacity of the node. The modeling speed and accuracy are improved, and a set of effective modeling method is provided for a designerto calculate and analyze the circular steel tube intersecting welding node.

Description

technical field [0001] The invention relates to building structure modeling technology, in particular to a Grasshopper-based parametric modeling method for intersecting welding joints of space circular steel pipes. Background technique [0002] The steel pipe structure is a structural form that is often used in current buildings, and the intersecting welded joint is a commonly used joint form. In addition to the calculation and analysis of the overall steel structure in the design of steel pipe structures, it is often necessary to perform finite element analysis on some nodes to verify whether the bearing capacity of the nodes is sufficient. In the past, designers often manually established three-dimensional models of nodes in finite element analysis software for calculation and analysis. This modeling method not only has slow modeling speed and low efficiency, but also is prone to errors when there are many nodes and members. [0003] Grasshopper is a parametric modeling p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06T17/10G06F119/14
CPCG06T17/10
Inventor 张慎尹鹏飞李霆
Owner 中南建筑设计院股份有限公司
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