Steel box girder incremental launching construction positioning horse plate structure

Abstract

The utility model provides a kind of steel box girder incremental launching construction positioning horse plate structure, effectively solve the horse plate welding precision not easy control in prior art, horse plate fixed mode is complicated, not conducive to the problem of bridge deck lap joint;Its solution technical scheme is, including vertical outer tube, there is rotatable inner shaft in outer tube, inner shaft upper and lower ends protrude outer tube, outer tube side wall is screwed with compression screw, compression screw can be fixed in outer tube with inner shaft so that it is fixed not to rotate;The upper end of outer tube and the upper end of inner shaft are both fixed with vertical upper plate, the front end of two upper plates is mutually far away and presents V shape;The lower end of outer tube and the lower end of inner shaft are both fixed with a vertical lower plate, and two lower plates are close;The utility model structure is ingenious, the structure will traditional welding fixed horse plate improve to assembly component, can realize on-site quick installation and standardization construction, not only be conducive to guaranteeing the accurate positioning of horse plate, but also can ensure that horse plate lower edge and bridge deck keep flush.

Description

Technical Field

[0001] This utility model relates to the field of steel-concrete bridge construction technology, and in particular to a positioning platform structure for the jacking construction of steel box girders. Background Technology

[0002] During the jacking construction of steel-concrete composite beams, when two steel box girder sections are lapped together, it is usually necessary to weld limiting plates (commonly known as "studs") on-site at the joint to ensure the overall flatness of the bridge deck. Specifically, multiple studs are welded to the upper side of one end of the bridge deck and the lower side of the other end, thus confining the two bridge decks between the upper and lower rows of studs during the lap joint, effectively preventing vertical misalignment and facilitating subsequent welding of the joint. However, in actual construction, studs, as protruding components welded to the ends of the bridge deck, are prone to impacts and damage. Their installation accuracy—including the spacing between studs, the horizontality of the bottom edge, and the alignment accuracy between the lower edge and the bridge deck—directly affects the quality and accuracy of the lap joint construction.

[0003] To address the above issues, this paper proposes a prefabricated positioning plate structure for the jacking construction of steel box girders. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a steel box girder jacking construction positioning plate structure, which effectively solves the problems of difficult control of the welding accuracy of the plate, cumbersome fixing method of the plate, and unfavorable bridge deck splicing in the prior art.

[0005] The technical solution includes a vertical outer cylinder with a rotatable inner shaft inside. The upper and lower ends of the inner shaft extend out of the outer cylinder. A clamping screw is screwed onto the side wall of the outer cylinder to fix the inner shaft inside the outer cylinder so that it cannot rotate. A vertical upper plate is fixed to the upper end of the outer cylinder and the upper end of the inner shaft. The front ends of the two upper plates are far apart and form a V shape. A vertical lower plate is fixed to the lower end of the outer cylinder and the lower end of the inner shaft. The two lower plates are in close contact.

[0006] To improve the accuracy of bridge deck overlap, the gap between the upper and lower plates is equal to the bridge deck thickness.

[0007] A bearing is installed between the outer cylinder and the inner shaft.

[0008] This utility model has an ingenious structure. It improves the traditional welded fixed bridge deck into an assembled component, which can realize rapid on-site installation and standardized construction. It not only helps to ensure the precise positioning of the bridge deck, but also ensures that the lower edge of the bridge deck is flush with the bridge deck. Attached Figure Description

[0009] Figure 1 This is a three-dimensional drawing of the present invention.

[0010] Figure 2 This is the front view of the present utility model.

[0011] Figure 3 This is a top view of the present invention.

[0012] Figure 4 This is a diagram showing the usage state of this utility model.

[0013] Figure 5 This is a diagram showing the state of the present invention in the initial stage of overlapping.

[0014] Figure 6 This is a front view of the present invention during the initial stage of assembly.

[0015] Figure 7 This is a top view of the present invention during the initial stage of overlapping.

[0016] Figure 8 This is a diagram showing the state of use of this utility model in the initial stage of overlapping. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0018] Depend on Figures 1 to 8 The present invention includes a vertical outer cylinder 1, inside which is a rotatable inner shaft 2. The upper and lower ends of the inner shaft 2 extend out of the outer cylinder 1. A clamping screw is screwed onto the side wall of the outer cylinder 1, which can fix the inner shaft 2 inside the outer cylinder 1 so that it is fixed and does not rotate. A vertical upper plate 3 is fixed to the upper end of the outer cylinder 1 and the upper end of the inner shaft 2. The front ends of the two upper plates 3 are far apart from each other and form a V shape. A vertical lower plate 4 is fixed to the lower end of the outer cylinder 1 and the lower end of the inner shaft 2. The two lower plates 4 are in close contact.

[0019] To improve the accuracy of bridge deck overlap, the gap between the upper plate 3 and the lower plate 4 is equal to the bridge deck thickness.

[0020] A bearing is installed between the outer cylinder 1 and the inner shaft 2.

[0021] When using it, in the initial stage of overlapping, the initial state is as follows: Figure 4-8 As shown, at this time, the two upper plates 3 are flush and in the same flat plate. This state facilitates the smooth overlapping of another bridge deck onto multiple lower plates 4, and the upper plates 3 do not interfere with the bridge deck overlapping process. After the two bridge decks are initially overlapped and aligned, the two upper plates 3 rotate forward at the same time and gradually move closer together. The upper plates 3 drive the corresponding lower plates 4 to gradually press against each other through the outer cylinder 1 or the inner shaft 2. At this time, the two upper plates 3 ride on the overlap joint to make the two bridge decks flush. Finally, the clamping screws are tightened.

[0022] This utility model has an ingenious structure. It improves the traditional welded fixed bridge deck into an assembled component, which can realize rapid on-site installation and standardized construction. It not only helps to ensure the precise positioning of the bridge deck, but also ensures that the lower edge of the bridge deck is flush with the bridge deck.

Claims

1. A positioning support plate structure for jacking steel box girders, characterized in that, It includes a vertical outer cylinder (1), an inner shaft (2) that can rotate inside the outer cylinder (1), the upper and lower ends of the inner shaft (2) extending out of the outer cylinder (1), and a clamping screw screw screwed on the side wall of the outer cylinder (1) to fix the inner shaft (2) inside the outer cylinder (1) so that it is fixed and does not rotate; a vertical upper plate (3) is fixed at the upper end of the outer cylinder (1) and the upper end of the inner shaft (2), the front ends of the two upper plates (3) are far apart from each other and form a V shape; a vertical lower plate (4) is fixed at the lower end of the outer cylinder (1) and the lower end of the inner shaft (2), the two lower plates (4) are close together.

2. The positioning support plate structure for steel box girder jacking construction according to claim 1, characterized in that, The gap between the upper plate (3) and the lower plate (4) is equal to the thickness of the bridge deck.

3. The positioning support plate structure for the jacking construction of a steel box girder according to claim 1, characterized in that, A bearing is installed between the outer cylinder (1) and the inner shaft (2).

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