Novel steel-concrete composite beam bridge deck pavement structure

Abstract

The utility model discloses a novel steel-concrete composite beam bridge deck pavement structure, which comprises connecting bolts, a steel bridge deck slab and a plurality of precast concrete slabs spliced and paved on the steel bridge deck slab, and is characterized in that upper bolt holes and post-pouring reinforcing holes are uniformly formed in the precast concrete slabs; the post-pouring reinforcing holes are formed above the upper bolt holes and communicate with the upper bolt holes. Lower bolt holes matched with the upper bolt holes are formed in the steel bridge deck slab; the connecting bolt comprises a screw penetrating through the upper bolt hole and the lower bolt hole, a bolt head arranged at the top of the screw and abutting against the edge of the top of the lower bolt hole, and a connecting rib arranged at the top of the bolt head and contained in the post-pouring reinforcing hole. The steel-concrete composite beam bridge deck structure solves the problems that in an existing steel-concrete composite beam bridge deck structure, the connection strength between the steel bridge deck slab and the concrete deck slab is not high, and stability is not high.

Description

Technical Field

[0001] The utility model relates to the technical field of traffic engineering, in particular to a novel steel-concrete composite beam bridge deck pavement structure. Background Art

[0002] Steel-concrete composite beam bridge decks are constructed by splicing steel decks and concrete slabs. Combining the advantages of both steel and concrete decks, they are currently a relatively practical bridge deck paving method. However, existing steel-concrete composite beam bridge deck construction lacks an effective connection method between the steel and concrete decks, resulting in low overall joint strength between the steel and concrete decks, which in turn affects the load-bearing stability and service life of the bridge deck. To address this issue, we propose a new steel-concrete composite beam bridge deck paving structure. Utility Model Content

[0003] In view of the above problems, the purpose of the present invention is to provide a new type of steel-concrete composite beam bridge deck pavement structure to solve the problem of low connection strength and stability between the steel bridge deck and the concrete deck in the existing steel-concrete composite beam bridge deck structure.

[0004] The utility model provides the following technical solutions.

[0005] A novel steel-concrete composite beam bridge deck pavement structure comprises connecting bolts, a steel bridge deck and a plurality of precast concrete slabs assembled and laid on the steel bridge deck, characterized in that upper bolt holes and post-cast reinforcement holes are evenly arranged on the precast concrete slabs, the post-cast reinforcement holes are arranged above the upper bolt holes and are connected to the upper bolt holes; lower bolt holes matching the upper bolt holes are arranged on the steel bridge deck; the connecting bolts comprise a screw rod passing through the upper bolt hole and the lower bolt hole, a bolt head arranged at the top of the screw rod and abutting the top edge of the lower bolt hole, and a connecting rib arranged at the top of the bolt head and accommodated in the post-cast reinforcement hole; concrete is poured in the post-cast reinforcement hole to embed the connecting rib on the connecting bolt connected between the upper bolt hole and the lower bolt hole in the post-cast reinforcement hole.

[0006] Preferably, the outer surface of the connecting rib is provided with a thread, and a plurality of inner reinforcing ribs are connected along the circumferential direction.

[0007] Preferably, a plurality of external reinforcing ribs are arranged in a circumferential direction on the hole wall of the post-cast reinforcement hole, and the external reinforcing ribs and the internal reinforcing ribs are staggered in the vertical direction.

[0008] Preferably, the post-cast reinforcement hole is coaxially connected to the upper bolt hole.

[0009] Preferably, the upper surfaces of the plurality of precast concrete slabs are paved with an asphalt layer.

[0010] Preferably, the upper bolt holes and post-cast reinforcement holes are arranged in a rectangular array on the precast concrete slab.

[0011] Compared with the existing technology, the beneficial effects of the present invention are: the steel-concrete composite beam bridge deck pavement structure of the present invention is not only convenient to construct and has high construction efficiency, but also improves the conventional bolt connection method between the steel bridge deck and the concrete deck, and connects the connecting reinforcement on the connecting bolt with the concrete poured in the post-cast reinforcement hole to form an integral structure, thereby strengthening the connection strength and stability between the steel bridge deck and the concrete deck, thereby improving the service life and load-bearing stability of the steel-concrete composite beam bridge deck. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the main structure of the precast concrete slab;

[0015] Figure 4 It is a top view of the precast concrete slab;

[0016] Figure 5 This is a schematic diagram of the post-cast reinforcement holes between steel bridge deck and concrete deck when concrete is not poured in them;

[0017] The meanings of the symbols in the above figure are: steel bridge deck 1, lower bolt hole 101, precast concrete slab 2, upper bolt hole 201, post-cast reinforcement hole 202, external reinforcement rib 2021, connecting bolt 3, screw 301, bolt head 302, connecting rib 303, internal reinforcement rib 3031, asphalt layer 4. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. However, the protection scope of the present invention is not limited to the following embodiments. That is, any simple equivalent changes and modifications made within the scope of the patent application of the present invention and the contents of the specification are still within the scope of the patent of the present invention. Example 1

[0019] A new type of steel-concrete composite beam bridge deck pavement structure, please refer to Figures 1 to 5, including connecting bolts 3, a steel bridge deck 1 and a plurality of precast concrete slabs 2 assembled and laid on the steel bridge deck; wherein, upper bolt holes 201 and post-casting reinforcement holes 202 are evenly arranged on the precast concrete slabs 2, and the post-casting reinforcement holes 202 are arranged above the upper bolt holes 201 and communicated with the upper bolt holes 201; the steel bridge deck 1 is provided with lower bolt holes 101 that match the upper bolt holes 201; the connecting bolts 3 include passing through the upper bolt holes 201 and the lower bolt hole 101 are provided with a screw rod 301, a bolt head 302 is provided at the top of the screw rod 301 and abuts against the top edge of the lower bolt hole 101, and a connecting rib 303 is provided at the top of the bolt head 302 and accommodated in the post-cast reinforcement hole 202; the post-cast reinforcement hole 202 is poured with concrete for embedding the connecting rib 303 on the connecting bolt 3 connected between the upper bolt hole 201 and the lower bolt hole 101 in the post-cast reinforcement hole 202;

[0020] In the above structure, the steel bridge deck 1 can be processed in the factory according to the design requirements; the precast concrete slab 2 is prefabricated in the factory and has upper bolt holes 201 and post-cast reinforcement holes 202 reserved. The diameter of the post-cast reinforcement holes 202 is larger than the diameter of the upper bolt holes 201. The construction process of the steel-concrete composite beam bridge deck pavement structure of the present invention is as follows:

[0021] S1. Processing the steel bridge deck 1 in a factory and prefabricating precast concrete slabs 2 of corresponding specifications, and then transporting the steel bridge deck 1 and precast concrete slabs 2 to the construction site;

[0022] S2. After the steel bridge deck 1 is installed, the precast concrete slab 2 is laid on the steel bridge deck 1 so that the upper bolt holes 201 of the precast concrete slab 2 are aligned with the lower bolt holes 101 of the steel bridge deck 1;

[0023] S3. Insert the screw rod 301 at the lower end of the connecting bolt 3 through the upper bolt hole 201 and the lower bolt hole 101 in sequence until the bolt head 302 abuts the top edge of the lower bolt hole 101; then tighten the fixing nut at the bottom of the screw rod 301, thereby completing the preliminary installation of the connecting bolt 3, thereby forming a preliminary connection between the precast concrete slab 2 and the steel bridge deck 1; at this time, the connecting rib 303 is accommodated in the post-cast reinforcement hole 202, and then concrete is poured in the post-cast reinforcement hole 202. After the concrete strength reaches the required level, the overall connection between the steel bridge deck and the concrete deck is completed;

[0024] In summary, the present invention improves the conventional bolt connection method between the steel bridge deck and the concrete deck, connects the connecting ribs 303 on the connecting bolts with the concrete poured in the post-cast reinforcement holes 202 to form an integral structure, thereby strengthening the connection strength and stability between the steel bridge deck and the concrete deck, thereby improving the service life and load-bearing stability of the steel-concrete composite beam bridge deck; at the same time, the steel-concrete composite beam bridge deck pavement structure of the present invention also has the advantages of convenient construction and high construction efficiency.

[0025] In order to improve the bonding strength between the connecting ribs 303 and the concrete poured in the post-cast reinforcement holes 202, further, in a preferred embodiment, refer to Figure 2 and Figure 5 The outer surface of the connecting rib 303 is provided with a thread, and multiple inner reinforcing ribs 3031 are connected along the circumferential direction.

[0026] Further, in a preferred embodiment, see Figure 2 and Figure 5 , a plurality of external reinforcement ribs 2021 are circumferentially arranged on the hole wall of the post-cast reinforcement hole 202, and the external reinforcement ribs 2021 and the internal reinforcement ribs 3031 are staggered up and down; and a certain gap is left between the ends of the external reinforcement ribs 2021 and the internal reinforcement ribs 3031 that are close to each other to prevent the external reinforcement ribs 2021 from affecting the installation of the connecting bolts 3; the external reinforcement ribs 2021 can be installed when the precast concrete slab 2 is prefabricated, and one end of the external reinforcement rib 2021 is implanted in the concrete panel and the other end extends into the post-cast reinforcement hole 202; based on the above arrangement, through the arrangement of the external reinforcement ribs 2021, the bonding force between the concrete panel and the concrete in the post-cast reinforcement hole 202 can be strengthened, thereby improving the connection strength and stability between the steel bridge deck and the concrete panel.

[0027] Furthermore, in a preferred embodiment, the post-cast reinforcement hole 202 is coaxially connected to the upper bolt hole 201 .

[0028] In order to prevent the concrete poured into the post-cast reinforcement hole 202 from affecting the appearance of the bridge deck, further, in a preferred embodiment, please refer to Figure 1 The upper surfaces of the plurality of precast concrete slabs 2 are paved with an asphalt layer 4 .

[0029] In order to ensure the uniformity of the force of the integral connection between the steel bridge deck and the concrete deck, further, in a preferred embodiment, please refer to Figure 4 The upper bolt holes 201 and the post-casting reinforcement holes 202 are arranged in a rectangular array on the precast concrete slab 2.

Claims

1. A novel steel-concrete composite beam bridge deck pavement structure, comprising connecting bolts (3), a steel bridge deck (1) and a plurality of precast concrete slabs (2) assembled and laid on the steel bridge deck, characterized in that: The precast concrete slab (2) is evenly provided with upper bolt holes (201) and post-cast reinforcement holes (202), and the post-cast reinforcement holes (202) are provided above the upper bolt holes (201) and communicate with the upper bolt holes (201); the steel bridge deck (1) is provided with lower bolt holes (101) that match the upper bolt holes (201); the connecting bolts (3) include screw rods (301) provided through the upper bolt holes (201) and the lower bolt holes (101). A bolt head (302) is provided at the top of the screw rod (301) and abuts against the top edge of the lower bolt hole (101); a connecting rib (303) is provided at the top of the bolt head (302) and accommodated in the post-cast reinforcement hole (202); concrete is poured in the post-cast reinforcement hole (202) to embed the connecting rib (303) on the connecting bolt (3) connected between the upper bolt hole (201) and the lower bolt hole (101) in the post-cast reinforcement hole (202).

2. The novel steel-concrete composite beam bridge deck pavement structure according to claim 1, characterized in that: The outer surface of the connecting rib (303) is provided with a thread, and is connected to a plurality of inner reinforcing ribs (3031) along the circumferential direction.

3. The novel steel-concrete composite beam bridge deck pavement structure according to claim 2, characterized in that: A plurality of external reinforcing ribs (2021) are arranged in a circumferential direction on the hole wall of the post-cast reinforcement hole (202), and the external reinforcing ribs (221) and the internal reinforcing ribs (3031) are arranged in an up-down staggered manner.

4. The novel steel-concrete composite beam bridge deck pavement structure according to claim 1, characterized in that: The post-cast reinforcement hole (202) is coaxially connected to the upper bolt hole (201).

5. The novel steel-concrete composite beam bridge deck pavement structure according to claim 1, characterized in that: The upper surfaces of the plurality of precast concrete slabs (2) are paved with an asphalt layer (4).

6. The novel steel-concrete composite beam bridge deck pavement structure according to claim 1, characterized in that: The upper bolt holes (201) and the post-cast reinforcement holes (202) are arranged in a rectangular array on the precast concrete slab (2).

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