A steel-concrete composite beam incremental launching construction structure

Abstract

This utility model provides a steel-concrete composite beam jacking construction structure, effectively solving the problems of difficult control of the welding precision of the support plate, cumbersome support plate fixing method, and inconvenience for splicing in the prior art. The technical solution includes a rectangular tube fixed to the bridge deck. A vertical groove is opened on the front side wall of the rectangular tube. Inside the rectangular tube is a block that fits snugly and cannot move. A rectangular plate is fixed to the front end of the block. The rectangular plate extends forward through the vertical groove, and the lower edge of the rectangular plate is flush with the bridge deck. The block has a first insertion hole in the left and right directions. The side wall of the rectangular tube has holes corresponding to the first insertion holes. Insert strips are inserted into the first insertion holes to fix the block inside the rectangular tube. This utility model has an ingenious structure, using prefabricated components to fix the traditional fixed support plate, which can be quickly installed on site, standardized operation, and can achieve precise positioning of the support plate, ensuring that the lower edge of the support plate is flush with the bridge deck.

Description

Technical Field

[0001] This utility model relates to the field of steel-concrete bridge construction technology, and in particular to a steel-concrete composite beam jacking construction structure. Background Technology

[0002] In the jacking construction of steel-concrete composite beams, when two steel box girders are lapped together, a limiting plate, also called a "stacking plate," needs to be welded on-site at the lap joint to ensure the bridge deck is flush. Then, a 10t jack is used to align the axes of the two sections. Current technology often uses on-site welding of the stacking plates, with all plates welded to the box girders to be connected. When adjusting the axis, the jack base lacks support, so a fixing block needs to be welded to the already fixed box girder surface. The jack base is fixed to the fixing block, and the output end of the jack presses against the stacking plate, ultimately achieving the lap joint. After checking the alignment of the U-ribs, four tie rods are quickly inserted and tightened with a wrench. Finally, the two box girders are circumferentially welded together. In the above process, welding is required during the lap joint, and the welding accuracy directly affects the lap joint effect. Welding accuracy includes, but is not limited to, positional spacing, the horizontality of the bottom edge of the stacking plate, and the alignment of the lower edge of the stacking plate with the bridge deck. Furthermore, since the stacking plate is a protruding part, it is easily damaged and deformed.

[0003] To address the aforementioned issues, a steel-concrete composite beam jacking construction structure is proposed. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a steel-concrete composite beam jacking construction structure, which effectively solves the problems of difficult control of the welding accuracy of the support plate, cumbersome fixing method of the support plate, and difficulty in splicing in the prior art.

[0005] The technical solution includes a rectangular tube fixed to the bridge deck. A vertical groove is opened on the front side wall of the rectangular tube, and a block that fits the rectangular tube and cannot move is inside the rectangular tube. A rectangular plate is fixed to the front end of the block, and the rectangular plate extends forward through the vertical groove. The lower edge of the rectangular plate is flush with the bridge deck. A first insertion hole is opened on the left and right sides of the block. There are holes on the side wall of the rectangular tube corresponding to the first insertion hole. An insert is inserted into the first insertion hole, and the insert fixes the block inside the rectangular tube.

[0006] Preferably, the block is provided with a vertical second insertion hole, and when the second insertion hole is aligned with the hole, the rectangular plate is perpendicular to the axis of the bridge deck.

[0007] Preferably, the rectangular tube has wing plates on both lower sides, multiple bolts are fixed at the lower end of the wing plates, there is a horizontal pad on the lower side of the wing plates, the bridge deck is located between the wing plates and the pad, the bolts pass through the bridge deck and the pad in sequence downwards, and the lower end of the bolts is screwed with a fastening bolt.

[0008] Preferably, a triangular reinforcing block is provided on one end of the rectangular plate near the rectangular tube, and the reinforcing block is in contact with the rectangular tube.

[0009] Preferably, a pin is provided at the end of the insert to prevent the insert from detaching from the rectangular tube.

[0010] This utility model has an ingenious structure, which uses assembled components to fix the traditional fixed bridge deck, enabling rapid on-site installation and standardized operations. It can achieve precise positioning of the bridge deck and ensure that the lower edge of the bridge deck is flush with the bridge surface. Attached Figure Description

[0011] Figure 1 This is the front sectional view of the present invention.

[0012] Figure 2 This is a structural diagram of a block, a rectangular plate, a reinforcing block, a first socket, and a second socket.

[0013] Figure 3 This is an exploded view of the present invention.

[0014] Figure 4 This is the second state of the present invention.

[0015] Figure 5 This utility model is in use. Figure 1 .

[0016] Figure 6 This utility model is in use. Figure 2 . 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 6 The present invention includes a rectangular tube 1 fixed to the bridge deck. A vertical groove 2 is provided on the front side wall of the rectangular tube 1. A block 3 is provided inside the rectangular tube 1 and is fixed to it and cannot move. A rectangular plate 4 is fixed to the front end of the block 3. The rectangular plate 4 extends forward through the vertical groove 2 and the lower edge of the rectangular plate 4 is flush with the bridge deck. A first insertion hole 5 is provided on the left and right sides of the block 3. There are holes on the side wall of the rectangular tube 1 corresponding to the first insertion hole 5. An insert 6 is inserted into the first insertion hole 5, and the insert 6 fixes the block 3 inside the rectangular tube 1.

[0019] In order to install a support plate at both ends of the box girder to facilitate quick alignment and provide support for the jacks, so as to facilitate the alignment of the bridge deck axis; the block 3 is provided with a vertical second insertion hole 7. When the second insertion hole 7 is aligned with the hole, the rectangular plate 4 is perpendicular to the axis of the bridge deck.

[0020] To fix the rectangular tube 1 and facilitate on-site assembly, the rectangular tube 1 has wing plates 8 on both lower sides. Multiple bolts 9 are fixed to the lower end of the wing plates 8. There is a horizontal pad on the lower side of the wing plates 8. The bridge deck is located between the wing plates 8 and the pad. The bolts 9 pass through the bridge deck and the pad in sequence. The lower end of the bolts 9 is screwed with a fastening bolt 9.

[0021] To increase the deformation resistance of the rectangular plate 4, a triangular reinforcing block 10 is provided on one end of the rectangular plate 4 near the rectangular cylinder 1, and the reinforcing block 10 is in contact with the rectangular cylinder 1.

[0022] A pin 11 is provided at the end of the insert 6 to prevent the insert 6 from detaching from the rectangular tube 1.

[0023] It is worth noting that when the bridge deck is prefabricated, reserved holes are set at the ends of the bridge deck, and the accuracy of the reserved holes directly affects the quality of the joint.

[0024] This scheme has two states, the first state is as follows: Figure 1 As shown, the insert 6 mates with the first socket 5 to align the bridge surface; the second state is as follows. Figure 4 As shown, the insert 6 mates with the second socket 7, a configuration intended to prevent interference during overlap.

[0025] In use, such as Figure 1 As shown, the entire device is placed at intervals on the end decks of two box girders. One box girder end is in the first state, and the other box girder end is in the second state. When the two bridge decks are aligned, all of the devices are placed in the first state, as shown. Figure 6 As shown, placing the jack between two adjacent rectangular plates 4 will quickly align the bridge deck axis.

[0026] This utility model has an ingenious structure, which uses assembled components to fix the traditional fixed bridge deck, enabling rapid on-site installation and standardized operations. It can achieve precise positioning of the bridge deck and ensure that the lower edge of the bridge deck is flush with the bridge surface.

Claims

1. A steel-concrete composite beam jacking construction structure, characterized in that, The rectangular tube (1) is fixed to the bridge deck. A vertical groove (2) is opened on the front side wall of the rectangular tube (1). Inside the rectangular tube (1) is a block (3) that fits against it and cannot move. A rectangular plate (4) is fixed to the front end of the block (3). The rectangular plate (4) extends forward through the vertical groove (2) and the lower edge of the rectangular plate (4) is flush with the bridge deck. A first insertion hole (5) is opened on the block (3) along the left and right direction. There is a hole on the side wall of the rectangular tube (1) corresponding to the first insertion hole (5). An insert (6) is inserted into the first insertion hole (5). The insert (6) fixes the block (3) inside the rectangular tube (1).

2. The steel-concrete composite beam jacking construction structure according to claim 1, characterized in that, The block (3) is provided with a vertical second insertion hole (7). When the second insertion hole (7) is aligned with the hole, the rectangular plate (4) is perpendicular to the axis of the bridge deck.

3. The steel-concrete composite beam jacking construction structure according to claim 1, characterized in that, The rectangular tube (1) has wing plates (8) on both sides of its lower side. Multiple bolts (9) are fixed at the lower end of the wing plates (8). There is a horizontal pad on the lower side of the wing plates (8). The bridge deck is located between the wing plates (8) and the pad. The bolts (9) pass through the bridge deck and the pad in sequence. A fastening bolt (9) is screwed on the lower end of the bolts (9).

4. A steel-concrete composite beam jacking construction structure according to claim 2 or 3, characterized in that, A triangular reinforcing block (10) is provided on one end of the rectangular plate (4) near the rectangular tube (1), and the reinforcing block (10) is in contact with the rectangular tube (1).

5. The steel-concrete composite beam jacking construction structure according to claim 4, characterized in that, A pin (11) is provided at the end of the insert (6) to prevent the insert (6) from detaching from the rectangular tube (1).

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