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Bailey truss joint with high structural strength

A high-structure, high-strength technology, which is applied in the erection/assembly of bridges, bridges, buildings, etc., can solve the problems that the bending and shearing resistance cannot meet the requirements of use, and achieve compact structure, enhanced shearing resistance, and improved bar stability Effect

Pending Publication Date: 2018-02-02
THE 3RD ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some cases, such as relatively large loads and relatively large spans of bridges or supports, the bending and shearing capabilities of standard Bailey joints cannot meet the requirements of use.

Method used

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  • Bailey truss joint with high structural strength
  • Bailey truss joint with high structural strength
  • Bailey truss joint with high structural strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment one, such as figure 1 , figure 2 , image 3 with Figure 4 The high structural strength Bailey truss section shown includes upper and lower chords 1, 2, vertical bars 3, middle cross bars 4 and several diagonal web bars 5, and connecting bar gusset plates 6 are welded on each diagonal web bar 5, Two connecting rods 7 are welded on the connecting rod gusset plate 6, and the connecting rods 7 and the connecting rod gusset plate 6 are connected to each other to form a closed section. The thickness of connecting rod gusset plate 6 is 0.6cm. Connecting rod 7 is No. 8 I-beams. The connecting rod 7 is welded to the diagonal web rod 5 and both are welded and covered with the connecting rod gusset plate 6 . The upper and lower chords 1 and 2 are respectively composed of two groups of No. 10 channel steels, and reinforcing steel plates 8 are arranged in the channel steels. The reinforced steel plate 8 is welded in the channel steel and has a thickness of 3cm.

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Embodiment 2

[0033] Embodiment 2, there is another way to improve the shear resistance of the Bailey truss structure:

[0034] By changing the No. 8 I-beam of the diagonal rod 5 into a square steel pipe, the steel pipe is square, the side length is 80mm, the wall thickness is 6mm, and the material is Q345b. By changing the cross-sectional form of the diagonal rod, the cross-sectional area is increased. And increase its radius of inertia to improve the compressive capacity of the diagonal web, so as to achieve the purpose of improving the overall shear bearing capacity of the Bailey truss.

[0035] The above two embodiments can be applied in combination, and can also be used independently according to specific situations.

[0036] In the above example, if Figure 5 The shown upper and lower chords 1, 2, vertical bar 3, middle cross bar 4 and diagonal web bar 5 are called bars. On the basis of the above-mentioned embodiments, the end of the bar is provided with a pre-calibration part 9; the...

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Abstract

The invention discloses a bailey truss joint with the high structural strength, and relates to the technical field of bridge construction. The bailey truss joint comprises upper and lower chords (1 and 2), a vertical rod 3, a middle transverse rod 4 and a plurality of diagonal web members. The bailey truss joint is characterized in that a connecting rod joint plate 6 is arranged on each diagonal web member 5, at least two connecting rods 7 are arranged on each connecting rod joint plate 6, and the connecting rods 7 and the connecting rod joint plates 6 are connected to form a closed region. The bailey truss standard joint capable of improving the bending moment and the shearing bearing force changes the comprehensive bearing force of the bailey truss, and can be used in cooperation with acommon bailey standard joint.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a Bailey truss joint with high structural strength. Background technique [0002] In the prior art, the 321-type Bailey beam is widely used in the field of engineering construction as a temporary assembled bridge structure component or building construction bracket assembly component. It has the characteristics of high strength, fast construction, and wide application. The shear strength of the thunder truss joint is 245.2KN, and the bending resistance is 788.2KN.m. However, in some cases, such as relatively large loads and relatively large spans of bridges or supports, the bending and shearing capabilities of standard Bailey joints cannot meet the requirements of use. [0003] Now the public document with the publication number CN103132449A discloses a Bailey beam with a staggered structure. It is assembled from a Bailey frame and a window; the Bailey frame include...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 段新鸽潘寿东李永刚周家鹏冯鲁豫卫鹏李伟方剑
Owner THE 3RD ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD