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Semi-closed and semi-open stiffening rib and stiffening plate

A stiffener and semi-opening technology, applied in the field of stiffeners, can solve the problems of poor torsional and bending rigidity of open ribs of stiffeners, increase the cross-sectional area of ​​the lower edge of stiffeners, and difficult welding of closed ribs, etc., to increase flexibility Sex and strain, avoid welding fatigue factor, improve the effect of torsion resistance

Pending Publication Date: 2022-07-29
ZHEJIANG CTB WAVEFORM STEEL WEB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to solve the problems of poor torsional and bending rigidity of open ribs of existing stiffeners, difficulty in welding closed ribs, and poor fatigue resistance. A semi-closed and semi-open stiffener, the upper part still uses an open section, which retains the connection advantages of the open rib, and the lower steel plate is bent to form a tubular flange, which not only increases the cross-sectional area of ​​the lower edge of the stiffener, but also passes through the lower section. Micro-deformation energy absorption greatly improves the torsion resistance and bending resistance of the stiffener. At the same time, the application provides a stiffener comprising the above-mentioned stiffener

Method used

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  • Semi-closed and semi-open stiffening rib and stiffening plate
  • Semi-closed and semi-open stiffening rib and stiffening plate
  • Semi-closed and semi-open stiffening rib and stiffening plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1As shown, Embodiment 1 provides a half-closed half-open stiffening rib for a stiffening plate, the stiffening rib is a long strip, and the stiffening rib is formed from a sheet of steel plate, including a web 1 and a flange portion 2, The web 1 and the flange portion 2 are integrally connected; the flange portion 2 is tubular, formed by the steel plate at the lower part of the web 1 to form a tubular member, and the flange portion 2 has a tail end 20 close to the web 1 . like Figure 4 As shown in the partial enlarged view of , there is a small gap between the tail end 20 and the web 1 or a natural fit, and the distance between the tail end 20 and the web 1 is 0-15 mm. The tail end 20 and the web 1 are not welded, but can also be partially welded.

[0037] The upper part of the stiffening rib is a web 1, and the lower part is surrounded by a tube, forming a half-open and half-closed structure. Compared with the traditional open rib, such as the spherical...

Embodiment 2

[0044] like Figure 5 and Image 6 As shown, the difference between Embodiment 2 and Embodiment 1 is that: in Embodiment 2, the end of the web 1 away from the flange portion 2 has a corrugated portion 11, and the corrugated direction of the corrugated portion 11 extends along the length of the stiffener, and the further toward the web The end wave height is higher.

[0045] Restricted by the height-to-thickness ratio of stiffener plate thickness and rib height, using higher beam height or rib height often requires increasing the plate thickness of the rib, which not only increases the material cost, but more importantly, the dead weight of the bridge deck system is too large and weakens. its applicability in long-span bridges. By rolling the corrugated shape on the stiffener web 1, the virtual thickness of the stiffener web 1 is increased, and the shear resistance and buckling resistance of the stiffener are improved. The weld is changed from the traditional single-directio...

Embodiment 3

[0048] like Figure 7 , 8 As shown, the difference between Embodiment 3 and Embodiment 1 is that the stiffening rib also includes a connecting plate 3 connected to the other end of the web 1, and the connecting plate 3 and the web 1 have an included angle φ, 85°≤φ≤95° . The connection plate 3 has connection holes 31 . The connecting plate 11 is used to connect with the stiffened panel. When connecting, the connecting plate 11 is attached to the panel, which can be fixed by welding, or connected by an assembly method such as bolt connection.

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Abstract

The invention relates to the field of stiffening plates, discloses a semi-closed and semi-open stiffening rib and a stiffening plate comprising the stiffening rib, and solves the problems that in an existing stiffening plate, an open rib is poor in torsion resistance and flexural rigidity, and a closed rib is large in welding difficulty, prone to fatigue cracking and the like. According to the technical scheme, the reinforcing rib is characterized by comprising a web plate (1) and a flange part (2), the reinforcing rib is formed by forming a steel plate, and the web plate (1) and the flange part (2) are integrally connected; the flange part (2) is tubular and is defined by forming a steel plate at the lower part of the web plate (1), the flange part (2) is provided with a tail end (20) close to the web plate (1), and the distance between the tail end (20) and the web plate (1) is 0-15mm. The upper portion adopts the open section, the connection advantage of the open rib is reserved, the lower steel plate is bent to form the flange portion capable of being naturally closed, the section of the lower edge of the rib is increased, and meanwhile the torsion resistance and the bending resistance of the stiffening rib are greatly improved through small deformation energy absorption of the lower section.

Description

technical field [0001] The present application relates to the field of stiffening plates, in particular to a stiffening rib and a stiffening plate. Background technique [0002] As a strip reinforcement, the stiffener is usually arranged on the side of the single-layer steel top plate or panel to form a stiffener to increase the virtual thickness of the veneer and improve the bending and torsion resistance of the veneer. Because of its light weight and good mechanical properties, it is widely used. For example, bridge decks in bridges are a typical application of stiffeners. The bridge deck is an important component in the bridge structure. In addition to participating in the overall stress of the bridge structure, it is more important to directly bear the vehicle load on the bridge deck and transfer the vehicle load on the bridge to other structural components. [0003] From the point of view of the form of stiffener, it is mainly divided into open rib and closed rib. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12
CPCE01D19/125
Inventor 孙天明冯雅萍
Owner ZHEJIANG CTB WAVEFORM STEEL WEB
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