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Calculating method for bending strength of dust-collector-box standing column under transverse-load effect

A technology of lateral load and flexural strength, applied in the field of structure, can solve the problems of not considering the cooperative work of the wall panel and the column, the force carrier is not accurate enough, and the force transmission mechanism is not accurate enough, so as to achieve convenient and accurate calculation of the flexural strength of the section, The calculation method is accurate and reliable, and the effect of high accuracy

Active Publication Date: 2018-05-11
JIANGNAN UNIV
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  • Application Information

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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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  • Calculating method for bending strength of dust-collector-box standing column under transverse-load effect
  • Calculating method for bending strength of dust-collector-box standing column under transverse-load effect
  • Calculating method for bending strength of dust-collector-box standing column under transverse-load effect

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Experimental program
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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 calculating method for the bending strength of a dust-collector-box standing column under the transverse-load effect. Engineering designers can conveniently and accurately calculate the maximum section bending moment of the internal force of the middle standing column when box wall plates suffer from the transverse-load effect according to the formula and related calculation coefficient tables; synergistic work of the wall plates and the standing column are considered, the wall plates in the effective width on the two sides of the standing column serve as extending parts of standing-column flanges to form a compound section, and the compound section and the standing column jointly bear the bending moment; in this way, the standing-column section modulus is multiplied by a correction coefficient gamma, and calculation and analysis of finite elements of multiple embodiments show that the gamma can be valued as 1.06 based on the safety, and therefore checking calculation of the bending strength of the section of the standing column is carried out.

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 Applications(China)
IPC IPC(8): G06F17/50
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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