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A Judgment Method for Bidirectional Bending Stability of Special-shaped Concrete-filled Steel Tube Columns

A technology for concrete-filled steel tubular columns and concrete columns, which is applied in the directions of instruments, geometric CAD, design optimization/simulation, etc., can solve the problem of lack of two-way buckling and stable bearing judgment methods for special-shaped concrete-filled steel tubular columns, so as to improve reliability and safety. Effect

Active Publication Date: 2020-11-13
HANGZHOU TONGMSK DESIGN CO LTD
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  • Description
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Problems solved by technology

[0005] In order to promote the application of special-shaped concrete-filled steel tube columns in engineering, the present invention provides a method for judging the two-way bending stability of special-shaped concrete-filled steel tube columns, which solves the technical problem in the prior art that there is no method for judging the two-way bending stability of special-shaped concrete-filled steel tube columns , compared with the numerical analysis results, this method is more secure and has strong applicability

Method used

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  • A Judgment Method for Bidirectional Bending Stability of Special-shaped Concrete-filled Steel Tube Columns
  • A Judgment Method for Bidirectional Bending Stability of Special-shaped Concrete-filled Steel Tube Columns
  • A Judgment Method for Bidirectional Bending Stability of Special-shaped Concrete-filled Steel Tube Columns

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0040] Embodiments of the present invention and concrete steps thereof are as follows:

[0041] 1. If figure 1 As shown, the special-shaped concrete-filled steel pipe column is formed by splicing steel pipe 1 and L-shaped steel plate 2 / steel plate 4 to form a special-shaped section member, and then pouring concrete 3 inside the member cavity. Firstly, according to the geometric parameters and material parameters of special-shaped concrete filled steel tube columns, calculate u , N' Ex , N' Ey . Among them, N u Indicates the full-section compressive bearing capacity of special-shaped concrete-filled steel tube columns, N′ Ex , N' Ey Respectively represent the calculation parameters related to the Euler critical load of the special-shaped concrete filled steel tube column around the two bending axes, the specific formula is as follows:

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Abstract

The invention discloses a method for judging the stable load bearing of a special-shaped steel pipe concrete column in bidirectional bending. First calculate the equivalent bending moment coefficient of the special-shaped concrete-filled steel tube column around two bending axes, and then judge the load-bearing stability of the special-shaped steel tube concrete column under the state of two-way compression bending force: if the conditions are met, the special-shaped steel tube concrete column will The load is stable under the action; if the condition is not met, the special-shaped concrete-filled steel tube column is unstable under the action of bidirectional compressive bending load. The two-way compression-bending stable bearing formula of special-shaped concrete-filled steel pipe columns proposed by the present invention fills the gap in the existing structural design technology. Compared with the numerical results, the calculated results of the formulas are more secure, which greatly improves the reliability and safety of special-shaped concrete-filled steel pipe structure design. sex.

Description

technical field [0001] The invention belongs to the technical field of structural design and relates to a method for judging the stability of construction structural members, in particular to a method for judging the stability of a special-shaped concrete-filled steel tube column in two-way compression bending stability. Background technique [0002] Concrete-filled steel pipe columns are formed by filling concrete in empty steel pipes. During the stress process, the steel pipes restrain the concrete inside, making the concrete in a three-dimensional compression state, which improves the compressive strength and deformation capacity of the concrete; Concrete can effectively prevent local buckling of steel pipes, so CFST columns have excellent mechanical properties, specifically manifested in the characteristics of high bearing capacity and high ductility. [0003] According to the different cross-sectional forms, the steel tube concrete column can be divided into circular st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/13G06F119/14
CPCG06F30/13G06F30/23G06F2119/06
Inventor 付波童根树
Owner HANGZHOU TONGMSK DESIGN CO LTD
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