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Transverse rib with turnup and bridge deck structure

A transverse rib and flanging technology, used in bridges, bridge materials, bridge construction, etc., can solve the problems of poor fatigue resistance and complicated installation of transverse ribs, so as to improve fatigue resistance, avoid welding fatigue cracking, prevent torsion and Distortion effect

Pending Publication Date: 2022-07-15
ZHEJIANG CTB WAVEFORM STEEL WEB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of this application is to provide a transverse rib with flanging and a bridge deck structure using the transverse rib in order to solve the problems of poor fatigue resistance at the joint between the traditional transverse rib and the longitudinal rib and the complicated installation of the transverse rib. Supporting the longitudinal ribs by surrounding or semi-enclosing the flanges not only improves the supporting force of the transverse ribs as the fulcrum, but also greatly improves the fatigue resistance of the connecting parts of the longitudinal ribs and transverse ribs by releasing the constraints at the bottom of the longitudinal ribs

Method used

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  • Transverse rib with turnup and bridge deck structure
  • Transverse rib with turnup and bridge deck structure
  • Transverse rib with turnup and bridge deck structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 1 Shown is a bridge deck structure, including a top plate 1, a longitudinal rib 2, and a transverse rib 3. The longitudinal direction is the X axis, the transverse direction is the Y axis, and the vertical direction is the Z axis.

[0051] like figure 1 and Figure 12 As shown, the longitudinal rib 2 is a closed rib. The longitudinal rib 2 includes a pair of mirror-symmetrical rib plates 21 and a bottom edge 22. The lower ends of the two rib plates 21 are connected to the bottom edge 22. Figure 12 A V-shape with an arcuate bottom edge 22 is shown. The upper end of the rib plate 21 has a lug plate 23 that is turned outward, and the longitudinal rib 2 is fixedly connected to the top plate 1 through the eversion lug plate 23. The connection methods are diversified, not only the traditional welding connection can be used, but also in the steel-concrete composite bridge deck. A more assembled connection method such as bolt connection can be used.

[0052] li...

Embodiment 2

[0066] like Figure 13As shown, the bridge deck structure in Embodiment 2 of the present application is different from Embodiment 1 in that the flange 32 of the transverse rib 3 is an arc-shaped flange in cross-section, and the flange used is different from the straight-sided flange 32. Although the contact area with the longitudinal rib 2 is small, the curling edge has a certain elastic deformation space. When the transverse rib 3 is connected with the longitudinal rib 2, the longitudinal rib 2 can be pressed into the transverse rib. The incision of the rib 3, due to the elastic deformation of the curled edge, makes the longitudinal rib and the transverse rib have a certain fault tolerance when connecting, and the requirement for dimensional accuracy is lower than that of the straight edge, which can effectively improve the assembly efficiency.

Embodiment 3

[0068] like Figure 14 As shown, it is a schematic diagram of the bridge deck structure in Example 3 of the application; the difference from Example 1 is that in Example 3, the flange 32 and the bottom edge 22 of the longitudinal rib 2 have the same cross-sectional shape, and the longitudinal rib 2 and the horizontal When the rib 3 is connected, the upper edge of the transverse rib 3 is not directly connected with the bottom surface of the top plate 1 , and the transverse rib 3 only forms a semi-embedded connection with the longitudinal rib 2 . The inner surface of the flange 32 is in contact with the outer surface of the bottom edge 22 , and the flange 32 and the longitudinal rib 2 are fixedly connected by welding. The area where the flange 32 and the bottom edge 22 fit together preferably adopts a surrounding welding that is closed around.

[0069] In the third embodiment of the present application, the transverse truss-like structure of the bridge deck structure is formed,...

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Abstract

The invention discloses a transverse rib with a turnup and a bridge deck structure, and solves the problems that the anti-fatigue performance of the connecting part of a traditional transverse rib and a longitudinal rib is poor, the transverse rib is difficult to install and the like, and the technical scheme is characterized in that a transverse rib web of the transverse rib is provided with a notch for the longitudinal rib to pass through, and the edge of the notch is provided with the turnup integrated with the transverse rib; according to the bridge floor structure comprising the transverse rib, the longitudinal rib penetrates through the notch of the transverse rib, and the turned-over edge of the transverse rib is attached to the outer surface of the longitudinal rib. The bearing force of the transverse ribs serving as fulcrums is improved, and meanwhile the anti-fatigue performance of the connecting portions of the longitudinal ribs and the transverse ribs is greatly improved by releasing constraint of the bottoms of the longitudinal ribs.

Description

technical field [0001] The present application relates to bridge engineering, and in particular to bridge deck structures and transverse ribs for bridge deck structures. Background technique [0002] Orthotropic bridge deck structure is composed of multiple longitudinal ribs, multiple transverse ribs and panels connected into a whole by welding to jointly bear the vehicle load, in which the longitudinal ribs play the role of continuous beams, and the transverse ribs Support each longitudinal rib. With the rapid development of the national economy and the improvement of transportation capacity requirements, bridges are developing in the direction of high piers, large spans, durability and high speed. Due to its unique advantages such as light weight, low structural height, good integrity, and large bearing capacity, ortho-shaped bridge deck structure has become the most commonly used solution for long-span highway bridge deck structures, and is also widely used in railway br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12E01D2/00E01D101/30
CPCE01D19/125E01D2/00E01D2101/30
Inventor 孙天明徐哲能
Owner ZHEJIANG CTB WAVEFORM STEEL WEB