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A spatial complex multi-branch pipe column joint bearing capacity calculation method

A computing method, a technology of manifolds, applied in computing, instrumentation, electrical digital data processing, etc.

Inactive Publication Date: 2019-05-28
重庆顺泰铁塔制造有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, studies on space intersecting joints with steel pipe inserts are rare, and the calculation of ultimate bearing capacity of such joints is an urgent research issue in structural design

Method used

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  • A spatial complex multi-branch pipe column joint bearing capacity calculation method
  • A spatial complex multi-branch pipe column joint bearing capacity calculation method
  • A spatial complex multi-branch pipe column joint bearing capacity calculation method

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Experimental program
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Embodiment

[0023] A method for calculating the bearing capacity of space-complex multi-branch joints, comprising the following steps:

[0024] S1. Establish the finite element model of the complex multi-branch pipe string in space; use the software ANSYS to model, establish such as figure 1 The finite element model shown includes the main pipe 1, the fourth branch 2, the first branch 3, the fifth branch 4, the second branch 5, the third branch 6 and the first auxiliary material rod 7, and the node model is simulated by SHELL181 shell element , regardless of the influence of the weld, the connection between the member and the gusset plate bolt hole is simulated by the MPC184 unit.

[0025] Considering the geometric nonlinearity and material nonlinearity of the joint model, the constitutive relationship of steel adopts multi-linear model and isotropic strengthening theory.

[0026] S2. Splitting the finite element model of the spatially complex multi-branch pipe string to obtain the K-typ...

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Abstract

The invention discloses a method for calculating the joint bearing capacity of multiple spatial complex pipe columns. The method comprises the following steps: establishing a finite element model of the multiple spatial complex pipe columns; performing finite element analysis on the finite element models of the multiple spatial complex pipe columns to obtain a finite element analysis result; and performing regression fitting on the finite element analysis result to obtain a calculation formula of the ultimate bearing capacity of the spatial column node. According to the method, a calculation formula of the ultimate bearing capacity of the multiple spatial complex pipe column joints is fitted, and a reference can be provided for engineering design through calculation according to the formula.

Description

technical field [0001] The invention belongs to the technical field of angle steel tower design, and in particular relates to a method for calculating the bearing capacity of space-complex multi-branch joints. Background technique [0002] The appearance and use of round steel pipe joints is earlier than that of square steel pipe joints, so the research time of the former is earlier, the research history is longer, and more data have been accumulated. The research on steel pipe joints began in 1948. The steel pipe joint experiments carried out in former West Germany mainly studied the ultimate strength and failure mode of joints. In the 1950s, the United States began the analysis and research of intersecting joints of steel pipes. Then in the 1960s, many countries adopted steel pipe member joints in long-span space structures and high-rise structures. At this time, steel pipe joints were developed rapidly, and the research work on steel pipe joints was gradually launched. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 刘蜀宇刘红军陈文军
Owner 重庆顺泰铁塔制造有限公司
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