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Method for determining axle load stability factor of composite rod piece

A composite material and stability coefficient technology, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inapplicability, and achieve the effect of reducing accidents, accurate determination, and high scientific credibility.

Active Publication Date: 2014-05-07
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, when the slenderness ratio is small, the member is close to strength failure, and the bearing capacity of the member obtained by the edge yield criterion is larger than the experimental value, which shows that the edge yield criterion is not applicable to the member with a small slenderness ratio

Method used

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  • Method for determining axle load stability factor of composite rod piece
  • Method for determining axle load stability factor of composite rod piece
  • Method for determining axle load stability factor of composite rod piece

Examples

Experimental program
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Embodiment 1

[0039] Such as figure 1 As shown, the method for determining the axial compression stability coefficient of the inventive composite member of this example includes the following steps:

[0040] (1) Determine the slenderness ratio of the composite member;

[0041] (2) Determine the regularized slenderness ratio of the composite member;

[0042] (3) Determine the strength reduction factor of the composite member;

[0043] (4) Determine the axial compression stability coefficient of the composite member.

[0044] The slenderness ratio λ in the step (1) is determined by formula (1):

[0045] λ = μl i - - - ( 1 )

[0046] In the formula, μ is the length factor value of the bar, l is the length of the bar, and i is the section moment of inertia of the bar.

[0047] The regularized slenderness ratio in step (2) Determined by formula (2): ...

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Abstract

The invention relates to a method for determining the axle load stability factor of a composite rod piece. The method comprises the following steps: determining the fineness ratio of the composite rod piece; determining the regularization fineness ratio of the composite rod piece; determining the strength reduction factor of the composite rod piece; determining the axle load stability factor of the composite rod piece. The method can be used for providing reference and basis for specification selection of the composite rod piece in a composite tower and the whole tower design.

Description

Technical field: [0001] The invention relates to a method for determining the axial pressure stability coefficient of a rod, and more particularly relates to a method for determining the axial pressure stability coefficient of a composite material rod. Background technique: [0002] With the rapid development of urban construction, land resources are becoming more and more scarce, and people's awareness of environmental protection is also increasing. At present, it is very difficult to deal with transmission lines in terms of policy handling, demolition and resettlement, and saving corridors. This is also one of the main starting points for State Grid Corporation to carry out research on composite towers in 2009. [0003] In the design and calculation of tower structures, the axial compression stability coefficient of members is an indispensable part of the parameters to determine the bearing capacity of towers. For example, the "Code for Design of Steel Structures" provides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 王旭明邢海军杨靖波刘振林
Owner STATE GRID CORP OF CHINA
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