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Method for improving local flexural capacity of staggered-truss chord members

A truss chord and bearing capacity technology, applied in the direction of building, building structure, etc., can solve the problems affecting the use of buildings, and achieve the effect of saving steel consumption and facilitating welding

Active Publication Date: 2017-11-10
ZHEJIANG GREEN BUILDING INTEGRATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology helps prevent damage caused by excessive stress on certain parts or components during use. It also saves more material while still providing enough strength without adding extra weight that could be added later when needed.

Problems solved by technology

This patented problem addressed in previous methods has been related to improving how well the design allows for better load distribution between different parts within the framework without causing damage or compromising its overall strength.

Method used

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  • Method for improving local flexural capacity of staggered-truss chord members
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  • Method for improving local flexural capacity of staggered-truss chord members

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Embodiment Construction

[0024] Please refer to the attached figure 1 To attach Figure 4 As shown, the present invention is a method for improving the local bending capacity of the chord of a staggered truss, comprising the following steps:

[0025] 1) Determine the section moment of inertia I of the chord according to the section size of the truss chord, and determine the elastic modulus E and strength design value f according to the steel type of the chord d , to obtain the design value M1 of the flexural bearing capacity of the chord, M1=f d *E*I;

[0026] 2), analyze and calculate the structural stress of the truss, and obtain the maximum bending moment M2 of the internode chords on both sides of the truss close to the column. When M2>M1, the flexural bearing capacity of the internodes on both sides is insufficient, and steel plates need to be welded;

[0027] 3), the length a of the steel plate is determined according to the range of the internode bending moment on both sides exceeding M1, ge...

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Abstract

The invention relates to a method for improving the local flexural capacity of staggered-truss chord members. The method comprises the following steps that (1) a flexural capacity design value M1 of the chord members is calculated; (2) the structural force of a truss is analyzed and calculated, a maximum bending moment M2 of panel length chord members, close to columns, of the two sides of the truss is obtained, when M2 is greater than M1, the two side panel length flexural capacity is insufficient, and a steel plate needs to be welded; (3) the length a of the steel plate is determined; (4) the thickness t of the steel plate is calculated; (5) the final thickness T of the steel plate needing to be welded is determined; (6) the width b of the steel plate is determined; and (7) the steel plate is welded in the range with a midspan as a center and the length being a in the panel length on the two sides of the truss, the steel plate is aligned to chord member lower flanges, and the steel plate and the chord members are subjected to fillet weld welding in the length direction and the width direction of the chord members. Under the condition that the height of the chord members is not changed, the steel plate is welded to the bottom of the lower flanges of the chord members in the range where the lock bending moment of the chord member is too large, and thus the flexural capacity of the part is improved.

Description

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Claims

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Application Information

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Owner ZHEJIANG GREEN BUILDING INTEGRATION TECH CO LTD
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