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Method for judging bidirectional bending stable bearing of special-shaped concrete filled steel tubular column

A technology for concrete-filled steel pipe columns and concrete columns, which is applied in special data processing applications, instruments, and electrical digital data processing, etc., and can solve problems such as the lack of methods for judging the stability of bi-directional bending of special-shaped concrete-filled steel pipe columns, and achieve improved reliability and safety sexual effect

Active Publication Date: 2019-09-20
HANGZHOU TONGMSK DESIGN CO LTD
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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

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  • Method for judging bidirectional bending stable bearing of special-shaped concrete filled steel tubular column
  • Method for judging bidirectional bending stable bearing of special-shaped concrete filled steel tubular column
  • Method for judging bidirectional bending stable bearing of special-shaped concrete filled steel tubular column

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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 bidirectional bending stable bearing of a special-shaped concrete filled steel tubular column. Firstly, the equivalent bending moment coefficient of the special-shaped concrete-filled steel tubular column around two bending shafts is calculated, and then the bearing stability of the special-shaped concrete-filled steel tubular column in the bidirectional bending stress state is judged: if the condition is met, the special-shaped concrete-filled steel tubular column is stably borne under the action of the bidirectional bending load; and if the conditions are not met, the special-shaped concrete filled steel tubular column is unstable in bearing under the action of bidirectional bending load. The two-way bending stable bearing formula for the special-shaped concrete filled steel tubular column fills the blank of the existing structural design technology, the formula calculation result is safer than the numerical value result, and the reliability and safety of the special-shaped concrete filled steel tubular column structural design are greatly improved.

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 Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/23G06F2119/06
Inventor 付波童根树
Owner HANGZHOU TONGMSK DESIGN CO LTD
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