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Structure and method for strengthening stability of H-section upright

A technology of stability and column, which is applied in the structural field of enhancing the stability of the H-shaped section column, can solve the problems of instability and damage of the column column of the dust collector box, low utilization rate of material strength, and reduction of the design section of the column, etc., to achieve processing and production Convenience, increase the carrying capacity, improve the effect of stable carrying capacity

Active Publication Date: 2017-05-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a reinforcement structure and method that can significantly enhance the stability of the H-shaped column for the column in the wallboard-H-shaped section column structure system, so as to solve the problem that the existing dust collector box column is prone to failure. The problem of stable failure and low utilization rate of material strength can reduce the design section of the column, thereby reducing the production cost

Method used

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  • Structure and method for strengthening stability of H-section upright
  • Structure and method for strengthening stability of H-section upright
  • Structure and method for strengthening stability of H-section upright

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The thickness t of the wall panel of the dust collector box is 7mm, the width w of the wall panel is 3500mm, the spacing s of the angle steel stiffener is 1170mm, and a horizontal support is provided every three stiffener spacings (the spacing of the lateral support is l=3s), the total height of the column H is 11990mm, and the column section is H200mm×150mm×6mm×9mm (section height h×flange width b f × web thickness t w × Flange thickness t f ).

[0036] When the lateral load is small, the initial bending and torsion deformation of the column section is constructed within the range of 0-0.08l below the column top; when the lateral load is large, the initial bending and torsion deformation is constructed within the range of 0.24l-0.32l. Calculate the bearing capacity of the column when the lateral load is 3000Pa and 9000Pa, and the stable bearing capacity before the stability of the column is enhanced is shown in Table 1.

Embodiment 2

[0038] Using the model parameters in Example 1, the stability-enhancing construction measures are adopted for the column simulation, and the thickness of the reinforced steel plate is t s and the thickness of the L-shaped diaphragm t Ls It is 1 time of the thickness of the column flange, and the width of the reinforced steel plate is b s It is 0.5 times the width of the column flange, and the reinforcement section is the first stiffener section. The stable bearing capacity after the column stability is enhanced is shown in Table 1.

Embodiment 3 and Embodiment 4

[0040] Compared with Example 2, Example 3 and Example 4 only changed the width of the reinforced steel plate in the stability-enhancing structure, and the specific structural parameters and the comparison of the stable bearing capacity of the column are shown in Table 1.

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Abstract

The invention discloses a structure and a method for strengthening the stability of an H-section upright, and belongs to the technical field of structures. A strengthening steel slab is welded on each of the two sides of the front flange of the H-section upright at an interval of two adjacent stiffening ribs of a wall plate with the stiffening ribs, so that the stable bearing capability of the upright is greatly improved on the basis of the original structure, then the designed section of the upright is further reduced, the stability is improved, the structure is convenient to process and manufacture, the steel is saved, and the production cost is low.

Description

technical field [0001] The invention relates to a structure and method for enhancing the stability of an H-shaped cross-section column, which 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 industry, building materials and other industries to eliminate smoke and dust, and the box (also called the shell) is the most important process part. When the enclosure structure of the box body adopts the stiffened straight steel plate wallboard-H-shaped (or I-shaped) cross-section column structure system, the side flange of the H-shaped cross-section column is continuously welded to the steel plate wallboard. The wall panels in the box are subjected to lateral loads caused by negative pressure and wind loads, and the lateral loads acting on the wall panels will be transferred to the columns, so that the columns bear the bending moment; the top...

Claims

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Application Information

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IPC IPC(8): B01D46/42
CPCB01D46/42
Inventor 王登峰潘立程宋碧颖
Owner JIANGNAN UNIV
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