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Calculation method of flexural strength of dust collector box column under lateral load

A technology of lateral load and flexural strength, applied in the field of structure, can solve problems such as not considering the cooperation between wall panels and columns, inaccurate force transmission mechanism, inaccurate force carrier, etc., to achieve convenient and accurate calculation of section flexural strength, The effect of high accuracy and accurate force transmission mechanism

Active Publication Date: 2021-12-24
JIANGNAN UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simplified calculation method is that the force transmission mechanism is not accurate enough, the wallboard of the dust collector box is not a one-way force transmission plate, and the force transmission effect of the stiffener on the wallboard should be considered; the second is that the force carrier is not accurate enough, and the relationship between the wallboard and the The cooperative work of the columns transmits all the lateral loads on the wall panels to the columns, so this simplified engineering calculation method will cause excessive calculation of internal forces

Method used

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  • Calculation method of flexural strength of dust collector box column under lateral load
  • Calculation method of flexural strength of dust collector box column under lateral load
  • Calculation method of flexural strength of dust collector box column under lateral load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The column of the dust collector box is a two-span column; the number n of wall panels between each column is 1; the spacing a of the stiffeners on the wall panels is 600mm, and the width b of one-span wall panels is 600mm, that is, b / a= 1; Column span l=n×a=600mm; the value p of lateral uniform load such as negative pressure and wind load is 0.008N / mm 2 . The maximum bending moment M of the section of the middle column calculated by programming with MATLAB language t As shown in Table 1, calculate M with the above method t The value has nothing to do with the column section size.

Embodiment 2～ Embodiment 54

[0091] Embodiment 2~embodiment 54 only changes the number n of the wall panel divisions n between each span of the column and the width b of a span wall panel with respect to Embodiment 1, and then changes the size of b / a, the specific construction parameters and the use of MATLAB language The maximum bending moment M of the intermediate column section calculated by programming t As shown in Table 1.

Embodiment 55

[0093] The column of the dust collector box is a two-span column; the number n of wall panels between each column is 1; the spacing a of the stiffeners on the wall panels is 1000mm, and the width b of one-span wall panels is 1000mm, that is, b / a= 1; column span l=n×a=1000mm; the value p of lateral uniform load such as negative pressure and wind load is 0.009N / mm 2 . The maximum bending moment M of the section of the middle column calculated by programming with MATLAB language t As shown in Table 1.

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Abstract

The invention discloses a method for calculating the flexural strength of a column of a box body of a dust collector under the action of a lateral load. The engineering designer can conveniently and accurately calculate the lateral load of the box wall panel according to the formula and the relevant calculation coefficient table proposed by the invention. The maximum section bending moment of the internal force of the middle column when acting; considering the cooperative work of the wall plate and the column, the wall plate within the effective width on both sides of the column is used as the extension of the column flange to form a composite section, which shares the bending moment with the column. The section modulus is multiplied by a correction coefficient γ, and the finite element calculation and analysis of several embodiments show that γ can be safely taken as 1.06, so that the flexural strength of the column section is checked.

Description

technical field [0001] The invention relates to a method for calculating the bending strength of a column of a dust collector box under the action of a transverse load, and belongs to the technical field of structures. Background technique [0002] The dust collector is the main environmental protection equipment widely used in thermal power, metallurgy, chemical and building materials industries to eliminate smoke and dust, and the box is the most important process part. When the enclosure structure of the box body adopts the straight steel plate wall panel with stiffeners-H-shaped (or I-shaped) cross-section column structure system, the side flange of the H-shaped cross-section column is continuously welded with the steel plate wall plate to form a stressed whole. The wall panel of the box body mainly directly bears lateral loads such as air negative pressure (acting from outside to inside) and wind load due to the temperature difference between inside and outside. latera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/17
CPCG06F30/17G06F30/23
Inventor 王登峰钱海峰赵婧同潘立程宋碧颖
Owner JIANGNAN UNIV
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