A steel structure bridge bridge signboard base structure

Abstract

This utility model discloses a sign and plaque base structure for steel bridges, belonging to the field of steel structure technology. It includes a concrete base foundation: set on the top slab of the steel box girder bridge and within the effective space of the green belt of the steel box girder bridge; asphalt paving is laid above the concrete base foundation; positioning flange steel plates: set inside the concrete base foundation, forming an integral load-bearing system with the concrete base foundation; anchor bolts: set inside the concrete base foundation, the anchor bolts being L-shaped and symmetrically arranged on both sides inside the concrete base foundation; and side median curb stones: set on both sides of the concrete base foundation. This utility model discloses a safe, reliable, and easy-to-install sign and plaque base structure.

Description

Technical Field

[0001] This utility model relates to the field of steel structure technology, and in particular to a base structure for signs and plaques on steel bridges. Background Technology

[0002] With the vigorous promotion of prefabricated steel structures in recent years, more and more steel structures are being used in municipal bridge projects. To seamlessly connect with the roads on both sides and enhance the landscape, some high-grade steel bridge decks require green belts. As bridge length increases, multiple signs and markers need to be installed on the bridge to meet traffic requirements. However, the space between the top of the green belt and the top of the steel bridge structure is limited, making it impossible to install the large-volume concrete bases for long cantilever signs. Traditional large-volume concrete bases for long cantilever signs are too bulky to fit within this limited space, leading to installation difficulties and safety hazards. Therefore, there is an urgent need for a sign base structure suitable for the limited space of the green belt on steel bridges. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a safe, reliable and easy-to-install sign base structure.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a steel bridge sign and plaque base structure, including...

[0006] Concrete base foundation: It is set on the top plate of the steel box girder bridge and within the effective space of the green belt of the steel box girder bridge. Asphalt paving is laid on the concrete base foundation.

[0007] Positioning flange plate: installed inside the concrete base foundation, the concrete base foundation and the positioning flange plate form an integral load-bearing system;

[0008] Anchor bolts: These are installed inside the concrete base foundation. The anchor bolts are L-shaped and symmetrically arranged on both sides inside the concrete base foundation.

[0009] Side median curb: installed on both sides of the concrete base.

[0010] The preferred technical solution of this utility model is that a steel reinforcement cage is provided inside the concrete base foundation, and the steel reinforcement cage includes N1 steel bars, N2 steel bars and N3 steel bars.

[0011] The preferred technical solution of this utility model is that the spacing of the N1 steel bars is 15cm, the spacing of the N2 steel bars is 15.6cm, and the spacing of the N3 steel bars is 20cm, so as to enhance the strength of the base.

[0012] The preferred technical solution of this utility model is that the horizontal section of the anchor bolt is welded to the top plate of the steel box bridge through a double-sided fillet weld, and the vertical section of the anchor bolt is embedded in the concrete base foundation.

[0013] The preferred technical solution of this utility model is that the weld height of the double-sided fillet weld is 16mm.

[0014] The preferred technical solution of this utility model is that the N1 steel bar is welded to the positioning flange steel plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model effectively solves the problem of limited space for sign bases on steel box girder bridges through a multi-dimensional design of the base, L-shaped anchor bolts, steel reinforcement frame, and positioning flange plate. It combines safety, convenience, and landscape harmony, and is suitable for the installation of ancillary facilities for various steel structure bridges. Attached Figure Description

[0017] Figure 1 This is a concrete base reinforcement diagram provided in a specific embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the sign base structure provided in a specific embodiment of this utility model;

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Concrete base foundation; 11. Positioning flange steel plate; 12. N1 steel bar; 13. N2 steel bar; 14. N3 steel bar; 2. Steel box bridge top plate; 3. Anchor bolts; 4. Side median curb; 5. Asphalt pavement. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] A steel bridge sign base structure, including

[0023] Concrete base foundation 1: Set on the top plate 2 of the steel box girder bridge and within the effective space of the green belt of the steel box girder bridge. Asphalt pavement 5 is laid on the top of the concrete base foundation 1. A steel reinforcement cage is configured inside the concrete base foundation 1. The steel reinforcement cage includes N1 steel bar 12, N2 steel bar 13 and N3 steel bar 14.

[0024] Positioning flange steel plate 11: It is installed inside the concrete base foundation 1, and the concrete base foundation 1 and the positioning flange steel plate 11 form an integral force-bearing system;

[0025] Anchor bolts 3: installed inside the concrete base foundation 1, the anchor bolts 3 are L-shaped and symmetrically arranged on both sides inside the concrete base foundation 1;

[0026] Side median curbstone 4: set on both sides of the concrete base 1.

[0027] According to the design drawings, mark the base position in the green belt area of ​​the top plate 2 of the steel box bridge, ensuring that both sides are aligned with the side median curb 4; lay N1 steel bars 12, N2 steel bars 13 and N3 steel bars 14 in sequence to form a steel reinforcement skeleton; install the anchor bolts 3 at the marked position on the top plate 2 of the steel box bridge and embed them in the steel reinforcement skeleton; place the positioning flange steel plate 11 on top of the steel reinforcement skeleton and weld it; set up the base formwork, pour concrete, vibrate and compact it, and cure it for 7 days. After the concrete strength reaches the standard, remove the formwork and lay the cast-in-place concrete layer and asphalt pavement 5 on top of the base;

[0028] The concrete base foundation 1 can be embedded in the space between the green belt and the top plate 2 of the steel box bridge, effectively solving the problems of excessive volume and limited space of traditional bases; the L-shaped anchor bolts 3 increase the horizontal shear area and improve the connection strength compared with traditional straight anchor bolts; through the cooperation of the steel reinforcement skeleton and the positioning flange steel plate 11, the crack resistance and overall rigidity of the concrete base foundation 1 are effectively improved, and the flexible deformation capacity of the steel reinforcement can absorb vibration energy and improve the seismic performance of the structure.

[0029] As one possible implementation of this solution, preferably, the spacing of the N1 steel bars 12 is 15cm, the spacing of the N2 steel bars 13 is 15.6cm, and the spacing of the N3 steel bars 14 is 20cm, so as to enhance the strength of the base. The dense spacing of the steel bars ensures that the stress is evenly distributed when the concrete base foundation 1 is under pressure, and avoids local crushing.

[0030] As a possible implementation of this solution, preferably, the horizontal section of the anchor bolt 3 is welded to the top plate 2 of the steel box girder bridge via a double-sided fillet weld, and the vertical section of the anchor bolt 3 is embedded in the concrete base foundation 1. The weld height of the double-sided fillet weld is 16mm. Compared with a single-sided weld, the weld cross-sectional area is increased by the double-sided weld, which effectively improves the shear bearing capacity. Moreover, the double-sided weld can offset welding deformation, ensure the verticality of the vertical section of the anchor bolt 3, and avoid positioning deviation.

[0031] As a possible implementation of this solution, preferably, the N1 steel bar 12 is welded to the positioning flange steel plate 11, which can ensure that the positioning flange steel plate 11 does not shift during the concrete pouring process and reduce the installation flatness error of the sign.

[0032] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A sign support structure for a steel structure bridge, characterized by: include Concrete base foundation (1): Set on the top plate (2) of the steel box girder bridge and within the effective space of the green belt of the steel box girder bridge. Asphalt pavement (5) is laid on the top of the concrete base foundation (1). Positioning flange steel plate (11): It is set inside the concrete base foundation (1), and the concrete base foundation (1) and the positioning flange steel plate (11) form an integral force-bearing system; Anchor bolts (3): set inside the concrete base foundation (1), the anchor bolts (3) are L-shaped and symmetrically arranged on both sides inside the concrete base foundation (1); Side median curb (4): set on both sides of the concrete base foundation (1).

2. The steel bridge signage base structure according to claim 1, characterized in that: The concrete base foundation (1) is equipped with a steel reinforcement cage, which includes N1 steel reinforcement (12), N2 steel reinforcement (13) and N3 steel reinforcement (14).

3. The steel bridge signage base structure according to claim 2, characterized in that: The N1 steel bars (12) are spaced at 15cm, the N2 steel bars (13) are spaced at 15.6cm, and the N3 steel bars (14) are spaced at 20cm to enhance the strength of the base.

4. The steel bridge signage base structure according to claim 1, characterized in that: The horizontal section of the anchor bolt (3) is welded to the top plate (2) of the steel box bridge through a double-sided fillet weld, and the vertical section of the anchor bolt (3) is embedded in the concrete base foundation (1).

5. The steel bridge signage base structure according to claim 4, characterized in that: The weld height of the double-sided fillet weld is 16mm.

6. The steel bridge signage base structure according to claim 2, characterized in that: The N1 steel bar (12) is welded to the positioning flange plate (11).

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