Steel-concrete composite structure prefabricated bridge deck slab quick connecting structure

Abstract

The utility model discloses a steel-concrete composite structure prefabricated bridge deck slab quick connecting structure which comprises a plurality of prefabricated bridge deck slabs which are sequentially connected in the length direction of a bridge, and inverted-L-shaped bridge deck slab side steel plates are arranged at the longitudinal ends of the prefabricated bridge deck slabs. Horizontal plates of the inverted-L-shaped bridge deck slab side steel plates are in lap joint with the step openings, the inner side faces of vertical plates of the inverted-L-shaped bridge deck slab side steel plates are welded to the longitudinal steel bars, the bottoms of the vertical plates of the inverted-L-shaped bridge deck slab side steel plates are lower than the bottom of the prefabricated bridge deck slab, and side steel plate covering steel plates are welded to the tops of the horizontal plates of every two adjacent inverted-L-shaped bridge deck slab side steel plates. The lower portions of the vertical plates of the side steel plates of every two adjacent inverted-L-shaped bridge deck slabs are connected through a plurality of high-strength bolts, and every two adjacent prefabricated bridge deck slabs are connected through a side steel plate joint layer. The inverted-L-shaped bridge deck slab side steel plates are installed at the ends of the bridge deck slabs prefabricated in a factory, every two adjacent bridge deck slabs on a construction site are connected in an upper-welding and lower-bolting mode, a middle gap is firmly connected in a polymer mortar mode, the construction progress can be accelerated, and quality is easy to control.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated bridge deck connection, and in particular relates to a steel-concrete composite structure prefabricated bridge deck quick connection structure. Background Art

[0002] As my country's modernization process continues to accelerate, the requirements for infrastructure construction speed are also increasing. Considering that the degree of prefabrication and assembly of steel structures has reached a very high level, the key to speeding up the construction of steel-concrete composite beam bridges is to increase the construction speed of bridge decks. Obviously, traditional cast-in-place bridge decks are difficult to meet the requirements of rapid construction, and prefabricated bridge decks are the most suitable structural form for the efficient construction of steel-concrete composite beam bridges. The use of prefabricated bridge decks can greatly improve the degree of prefabrication and assembly of steel-concrete composite beam bridges, and can maximize the standardized construction, factory manufacturing and convenient construction of bridges.

[0003] However, the biggest challenge of using precast bridge decks is how to achieve good and fast connections between precast bridge decks and between precast bridge decks and steel main beams. The connection structure is the key and weak link of precast bridge decks. The quality of its performance not only affects the construction speed of precast bridge decks during construction, but also affects the performance of precast bridge decks during operation.

[0004] The connection between current bridge panels usually adopts the hanging formwork method. A large number of formworks are erected on site, the construction speed is slow, and the workload on site is large. This method undoubtedly increases the construction period. In addition, the joint concrete is poured on site, and the pouring and maintenance quality is difficult to guarantee. In addition, the strength of the interface between the new and old concrete is low, and it is the weakest link in the stress. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a quick connection structure of a prefabricated bridge deck of a steel-concrete composite structure in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a steel-concrete composite structure prefabricated bridge deck quick connection structure, the steel-concrete composite structure prefabricated bridge deck comprises a plurality of prefabricated bridge decks connected in sequence along the length direction of the bridge, a step opening is provided on the upper side of the longitudinal end of the prefabricated bridge deck, a steel skeleton is cast in the prefabricated bridge deck, and the longitudinal steel bars of the steel skeleton extend out of the prefabricated bridge deck, characterized in that: the longitudinal end of the prefabricated bridge deck is provided with a bridge deck side steel plate matched with the step opening, the bridge deck side steel plate is an inverted L-shaped bridge deck side steel plate, and the inverted L-shaped The horizontal plate of the side steel plate of the bridge deck is overlapped on the step mouth, the inner side surface of the vertical plate of the side steel plate of the inverted L-shaped bridge deck is welded to the longitudinal steel bar, the bottom of the vertical plate of the side steel plate of the inverted L-shaped bridge deck is lower than the bottom of the prefabricated bridge deck, the top of the horizontal plate of the side steel plate of the inverted L-shaped bridge deck at the connection position of two adjacent prefabricated bridge decks is welded with a side steel plate covering steel plate, the lower part of the vertical plate of the side steel plate of the inverted L-shaped bridge deck at the connection position of two adjacent prefabricated bridge decks is connected by a plurality of high-strength bolts, and the outer side surface of the side steel plate of the inverted L-shaped bridge deck at the connection position of two adjacent prefabricated bridge decks is connected by a side steel plate seam layer.

[0007] The above-mentioned steel-concrete composite structure prefabricated bridge deck quick connection structure is characterized in that the upper surface of the side steel plate covering steel plate is flush with the upper surface of the prefabricated bridge deck.

[0008] The above-mentioned steel-concrete composite structure prefabricated bridge deck quick connection structure is characterized in that: there is a gap between the side steel plate covering steel plate and the vertical side walls of the step openings on both sides, and a smoothing filling layer is arranged in the gap, and the upper surface of the smoothing filling layer is flush with the upper surface of the prefabricated bridge deck.

[0009] The above-mentioned steel-concrete composite prefabricated bridge deck quick connection structure is characterized in that the smoothing filling layer is a polymer mortar filling layer, and the side steel plate joint layer is a polymer mortar joint layer.

[0010] The above-mentioned steel-concrete composite prefabricated bridge deck quick connection structure is characterized in that the thickness of the side steel plate joint layer is 3mm to 5mm.

[0011] The above-mentioned steel-concrete composite prefabricated bridge deck quick connection structure is characterized in that a plurality of high-strength bolts are arranged along the width direction of the bridge deck side steel plate, and the interval between two adjacent high-strength bolts is 10 cm to 20 cm.

[0012] The above-mentioned steel-concrete composite structure prefabricated bridge deck quick connection structure is characterized in that: a plurality of bridge deck side steel plate supports are arranged between the vertical plate section of the inverted L-shaped bridge deck side steel plate that is lower than the bottom of the prefabricated bridge deck and the lower surface of the prefabricated bridge deck, and the plurality of bridge deck side steel plate supports are arranged along the width direction of the prefabricated bridge deck.

[0013] The beneficial effects of the utility model are that the design is novel and reasonable. Steel plates are installed at the ends of the bridge panels prefabricated in the factory. The height of the steel plates is greater than the height of the bridge panels. Two adjacent bridge panels on the construction site are connected by upper welding and lower bolting. The lower part is bolted with high-strength bolts, and the upper part is connected by butt connection of the bridge panels covering the steel plates. The middle gap is firmly connected by polymer mortar. The thickness of the middle polymer mortar is only about 4 mm, which can greatly shorten the construction period and is easy to control the quality. It can speed up the construction progress, shorten the construction period, and is easy to control the quality, which is convenient for promotion and use.

[0014] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Description of reference numerals:

[0017] 1—Prefabricated bridge deck; 2—Longitudinal reinforcement; 3—Side steel plate of bridge deck;

[0018] 4—Side steel plate covering steel plate; 5—Smoothing and filling layer; 6—Side steel plate joint layer;

[0019] 7—High-strength bolts. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, the utility model is a steel-concrete composite structure prefabricated bridge deck quick connection structure, the steel-concrete composite structure prefabricated bridge deck comprises a plurality of prefabricated bridge decks 1 connected in sequence along the length direction of the bridge, a step opening is provided on the upper side of the longitudinal end of the prefabricated bridge deck 1, a steel skeleton is cast in the prefabricated bridge deck 1, the longitudinal steel bars 2 of the steel skeleton extend out of the prefabricated bridge deck 1, and the longitudinal end of the prefabricated bridge deck 1 is provided with a bridge deck side steel plate 3 matched with the step opening, the bridge deck side steel plate 3 is an inverted L-shaped bridge deck side steel plate, and the horizontal plate of the inverted L-shaped bridge deck side steel plate is laid Connected to the step mouth, the inner side surface of the vertical plate of the inverted L-shaped bridge deck side steel plate is welded to the longitudinal steel bar 2, the bottom of the vertical plate of the inverted L-shaped bridge deck side steel plate is lower than the bottom of the prefabricated bridge deck 1, and the top of the horizontal plate of the inverted L-shaped bridge deck side steel plate at the connection position of two adjacent prefabricated bridge decks 1 is welded with a side steel plate covering steel plate 4, the lower part of the vertical plate of the inverted L-shaped bridge deck side steel plate at the connection position of two adjacent prefabricated bridge decks 1 is connected by a plurality of high-strength bolts 7, and the outer side surface of the inverted L-shaped bridge deck side steel plate at the connection position of two adjacent prefabricated bridge decks 1 is connected by a side steel plate seam layer 6.

[0021] It should be noted that steel plates are installed at the ends of the prefabricated bridge decks in the factory. The height of the steel plates is greater than the height of the bridge decks. The two adjacent bridge decks on the construction site are connected by upper welding and lower bolting. The lower part is bolted with high-strength bolts, and the upper part is connected by butt connection of the bridge deck covering the steel plate. The middle gap is firmly connected by polymer mortar. The thickness of the middle polymer mortar is only about 4mm, which can greatly shorten the construction period and is easy to control the quality. It can speed up the construction progress, shorten the construction period, and is easy to control the quality. There is no need to set up formwork on site, and the strength of the interface between the prefabricated bridge decks with steel-concrete composite structure is enhanced.

[0022] In this embodiment, the upper surface of the side steel plate covering steel plate 4 is flush with the upper surface of the prefabricated bridge deck 1 .

[0023] In this embodiment, there is a gap between the side steel plate covering steel plate 4 and the vertical side walls of the step openings on both sides, and a smoothing filling layer 5 is arranged in the gap, and the upper surface of the smoothing filling layer 5 is flush with the upper surface of the prefabricated bridge deck 1.

[0024] It should be noted that the upper surface of the side steel plate covering steel plate 4 and the upper surface of the smoothed caulking layer 5 are flush with the upper surface of the prefabricated bridge deck 1 to ensure the flatness of the bridge deck.

[0025] In this embodiment, the smoothing filling layer 5 is a polymer mortar filling layer, and the side steel plate joint layer 6 is a polymer mortar joint layer.

[0026] In this embodiment, the thickness of the side steel plate seam layer 6 is 3 mm to 5 mm.

[0027] In this embodiment, a plurality of high-strength bolts 7 are arranged along the width direction of the bridge deck side steel plate 3 , and the interval between two adjacent high-strength bolts 7 is 10 cm to 20 cm.

[0028] In this embodiment, a plurality of bridge deck side steel plate supports are arranged between the vertical plate section of the inverted L-shaped bridge deck side steel plate that is lower than the bottom of the prefabricated bridge deck 1 and the lower surface of the prefabricated bridge deck 1, and the plurality of bridge deck side steel plate supports are arranged along the width direction of the prefabricated bridge deck 1.

[0029] When the utility model is used, an inverted L-shaped bridge deck side steel plate is installed at the end of the bridge deck prefabricated in the factory to form a new prefabricated structure. On the construction site, two adjacent bridge decks are connected by upper welding and lower bolting, and the middle is connected by polymer mortar. The construction is efficient and fast, and the defect of weak stress on the bridge deck interface is eliminated.

[0030] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A quick connection structure of a prefabricated bridge deck of a steel-concrete composite structure, the prefabricated bridge deck of the steel-concrete composite structure comprising a plurality of prefabricated bridge decks (1) connected in sequence along the length direction of the bridge, a step opening being provided on the upper side of the longitudinal end of the prefabricated bridge deck (1), a steel skeleton being cast inside the prefabricated bridge deck (1), and the longitudinal steel bars (2) of the steel skeleton extending out of the prefabricated bridge deck (1), characterized in that: The longitudinal end of the prefabricated bridge deck (1) is provided with a bridge deck side steel plate (3) that matches the step opening, the bridge deck side steel plate (3) is an inverted L-shaped bridge deck side steel plate, the horizontal plate of the inverted L-shaped bridge deck side steel plate is overlapped on the step opening, the inner side surface of the vertical plate of the inverted L-shaped bridge deck side steel plate is welded to the longitudinal steel bar (2), the bottom of the vertical plate of the inverted L-shaped bridge deck side steel plate is lower than the bottom of the prefabricated bridge deck (1), the top of the horizontal plate of the inverted L-shaped bridge deck side steel plate at the connection position of two adjacent prefabricated bridge decks (1) is welded with a side steel plate covering steel plate (4), the lower part of the vertical plate of the inverted L-shaped bridge deck side steel plate at the connection position of two adjacent prefabricated bridge decks (1) is connected by a plurality of high-strength bolts (7), and the outer side surface of the inverted L-shaped bridge deck side steel plate at the connection position of two adjacent prefabricated bridge decks (1) is connected by a side steel plate joint layer (6).

2. A steel-concrete composite prefabricated bridge deck quick connection structure according to claim 1, characterized in that: The upper surface of the side steel plate covering steel plate (4) is flush with the upper surface of the prefabricated bridge deck (1).

3. A steel-concrete composite prefabricated bridge deck quick connection structure according to claim 2, characterized in that: There is a gap between the side steel plate covering steel plate (4) and the vertical side walls of the step openings on both sides, and a smoothing and filling layer (5) is arranged in the gap, and the upper surface of the smoothing and filling layer (5) is flush with the upper surface of the prefabricated bridge deck (1).

4. A steel-concrete composite prefabricated bridge deck quick connection structure according to claim 3, characterized in that: The smoothing caulking layer (5) is a polymer mortar caulking layer, and the side steel plate joint layer (6) is a polymer mortar joint layer.

5. A steel-concrete composite prefabricated bridge deck quick connection structure according to claim 1, characterized in that: The thickness of the side steel plate joint layer (6) is 3 mm to 5 mm.

6. A steel-concrete composite prefabricated bridge deck quick connection structure according to claim 1, characterized in that: A plurality of high-strength bolts (7) are arranged along the width direction of the bridge deck side steel plate (3), and the interval between two adjacent high-strength bolts (7) is 10 cm to 20 cm.

7. A steel-concrete composite prefabricated bridge deck quick connection structure according to claim 1, characterized in that: A plurality of bridge deck side steel plate supports are arranged between the vertical plate section of the inverted L-shaped bridge deck side steel plate that is lower than the bottom of the prefabricated bridge deck (1) and the lower surface of the prefabricated bridge deck (1), and the plurality of bridge deck side steel plate supports are arranged along the width direction of the prefabricated bridge deck (1).

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