Pavement surface layer structure of seaport wharf

Abstract

The utility model discloses a pavement surface layer structure of a seaport wharf. The pavement surface layer structure comprises cast-in-place concrete, a reinforcing mesh, a steel filler strip, a basalt fiber grid and binding wires, wherein the reinforcing mesh, the steel filler strip, the basalt fiber grid and the binding wires are arranged in the cast-in-place concrete. The reinforcing mesh is composed of longitudinal reinforcing steel bars and transverse reinforcing steel bars, and the longitudinal reinforcing steel bars are arranged below the transverse reinforcing steel bars. The steel filler strips comprise a plurality of vertical filler strips and a plurality of transverse filler strips; the bottoms of the vertical filler strips are welded on transverse reinforcing steel bars of the reinforcing mesh; the transverse filler strip is welded at the top end of the vertical filler strip; and the basalt fiber grids are laid on the plurality of transverse filler strips. The binding wires comprise steel wires and nylon wires; the steel wires are used for binding longitudinal steel bars and transverse steel bars in the steel bar mesh, and each mesh formed by the longitudinal steel bars and the transverse steel bars is bound by at least one steel wire; and the nylon wires are used for binding the transverse filler strips and the basalt fiber grids. According to the utility model, the bending resistance of the pavement surface layer can be improved, concrete surface layer cracks are restrained, and the appearance quality of the pavement surface layer is effectively improved.

Description

Technical Field

[0001] The utility model relates to a pavement surface layer structure of a seaport terminal. Background Art

[0002] With the increasing of logistics transportation, the construction demand of seaport terminals is increasing day by day, and higher requirements are put forward for the service life and structural performance of seaport terminals.

[0003] As a cast-in-place ultra-thin concrete structure of the terminal, the pavement is easily cracked under the influence of bottom restraint, environment and construction. Once cracks appear, chloride ions in the marine environment will penetrate in and corrode the steel bars, causing the concrete to further expand and crack, with poor appearance quality and certain risks for vehicle driving. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a pavement surface layer structure of a seaport terminal, which can improve the flexural performance of the pavement surface layer, restrain the surface cracks of the concrete, and effectively improve the appearance quality of the pavement surface layer.

[0005] The purpose of the utility model is realized as follows: A pavement surface layer structure of a seaport terminal, including cast-in-place concrete, a steel bar mesh, steel cushion bars and basalt fiber meshes arranged in the cast-in-place concrete; wherein,

[0006] The steel bar mesh is composed of longitudinal steel bars and transverse steel bars. The longitudinal steel bars are arranged below the transverse steel bars, and the longitudinal steel bars and the transverse steel bars are tied with steel wires.

[0007] The steel cushion bars include a plurality of vertical cushion bars and a plurality of horizontal cushion bars; the bottoms of the vertical cushion bars are welded to the transverse steel bars of the steel bar mesh; the horizontal cushion bars are welded to the tops of the vertical cushion bars;

[0008] The basalt fiber meshes are laid on a plurality of horizontal cushion bars, and the basalt fiber meshes are tied and fixed to the plurality of horizontal cushion bars with nylon wires.

[0009] For the above pavement surface layer structure of the seaport terminal, wherein, the cast-in-place concrete adopts concrete with a strength grade of C35 - C45.

[0010] For the above pavement surface layer structure of the seaport terminal, wherein, the thickness of the concrete cover of the transverse steel bars of the steel bar mesh is 6 - 8 cm; the height of the vertical cushion bars is 4 - 6 cm.

[0011] For the above pavement surface layer structure of the seaport terminal, wherein, at least one intersection point of each mesh formed by the intersection of longitudinal steel bars and transverse steel bars is tied with a steel wire.

[0012] The pavement surface layer structure of the above-mentioned seaport terminal, wherein the transverse cushion bars are arranged longitudinally throughout the length to the end of the structure, and the longitudinal spacing of multiple transverse cushion bars is 2 - 3m.

[0013] The pavement surface layer structure of the above-mentioned seaport terminal, wherein the basalt fiber grid is arranged longitudinally throughout the length and is lap-jointed transversely, and the lap size is at least three grids, and the lap joint is fixed by tying with nylon wires.

[0014] The characteristics of the pavement surface layer structure of the seaport terminal of the present utility model are as follows:

[0015] 1. A steel bar mesh composed of transverse steel bars and longitudinal steel bars is arranged in the cast-in-place concrete, which improves the bearing capacity of the pavement when it is compressed.

[0016] 2. By adding a basalt fiber grid with light weight, high strength and corrosion resistance to the cast-in-place concrete, the surface cracks of the concrete can be effectively restricted after being incorporated into the cast-in-place concrete, and the appearance quality of the pavement surface layer can be improved.

[0017] 3. The steel cushion bars are used to position the basalt fiber grid. It can not only more accurately ensure the protective layer thickness of the basalt fiber grid, but also the steel cushion bars and the basalt fiber grid form a good skeleton of the concrete pavement surface layer, which can further improve the overall stiffness of the concrete surface layer and effectively improve the flexural performance of the pavement surface layer.

[0018] 4. Using nylon wires to tie the basalt fiber grid and the steel cushion bars can well fix the basalt fiber grid. Description of the Drawings

[0019] Figure 1 is a sectional view of the pavement surface layer structure of the seaport terminal of the present utility model. Detailed Embodiment

[0020] The present utility model will be further described below in conjunction with the drawings.

[0021] Please refer to Figure 1 , the pavement surface layer structure of a seaport terminal of the present utility model includes cast-in-place concrete 1 and a steel bar mesh, steel cushion bars and a basalt fiber grid 5 arranged in the cast-in-place concrete 1.

[0022] The cast-in-place concrete 1 adopts concrete with a strength grade of C35 - C45.

[0023] The steel bar mesh is composed of longitudinal steel bars 3 and transverse steel bars 4. The longitudinal steel bars 3 are arranged below the transverse steel bars 4. The longitudinal steel bars 3 and the transverse steel bars 4 in the steel bar mesh are tied with steel wires 8, and at least one intersection point of each mesh formed by the intersection of the longitudinal steel bars 3 and the transverse steel bars 4 is tied with a steel wire 8. The thickness of the concrete protective layer of the transverse steel bars 4 is 6 - 8cm.

[0024] The steel cushion bars include a plurality of vertical cushion bars 2 and a plurality of horizontal cushion bars 6; among them, the bottom of the vertical cushion bar 2 is welded to the transverse steel bars 4 of the steel bar mesh, and the height of the vertical cushion bar 2 is 4-6 cm; the horizontal cushion bar 6 is welded to the top of the vertical cushion bar 2, the horizontal cushion bar 6 is arranged horizontally and longitudinally to the end of the structure, and the longitudinal spacing of the plurality of horizontal cushion bars 6 is 2-3 m.

[0025] The basalt fiber grid 5 is laid on a plurality of horizontal cushion bars 6, and the basalt fiber grid 5 is tied and fixed to the horizontal cushion bars 6 by nylon wires 7; the basalt fiber grid 5 is arranged longitudinally and horizontally, and the lap joint is at least three grids, and the lap joint is tied and fixed by nylon wires 7.

[0026] For the pavement surface layer structure of a seaport terminal of the present utility model, the more the steel wires 8 in the steel bar mesh are tied, the more stable the steel bar mesh is. Therefore, it is best that there are two intersection points in each mesh hole formed by longitudinal steel bars and transverse steel bars tied by the steel wires 8; the greater the concrete cover thickness of the steel bar mesh, the corrosion rate of the steel bar is greatly reduced, which can ensure the mechanical properties of the steel bar. Therefore, the cover thickness of the transverse steel bar 4 is preferably 8 cm.

[0027] Since the closer the basalt fiber grid 5 is to the surface of the cast-in-place concrete 1, the more obvious the surface constraint effect on the cast-in-place concrete 1 is, and the distance from the basalt fiber grid 5 to the surface of the cast-in-place concrete 1 is determined by the vertical cushion bar 2. Therefore, the optimal height of the vertical cushion bar 2 is 6 cm.

[0028] When the longitudinal spacing of the horizontal cushion bars 6 is smaller, the basalt fiber grid 5 is more stable, and the number of horizontal cushion bars 6 increases, the reinforcement ratio of the surface layer structure becomes higher, and the mechanical properties are enhanced; therefore, the longitudinal spacing of the horizontal cushion bars 6 is preferably 2 m.

[0029] The more the transverse lap joint size of the basalt fiber grid 5 is, the greater the thickness of the lap joint layer is, and the better the performance of the lap joint is. Therefore, the transverse lap joint size of the basalt fiber grid 5 is preferably 5 grids.

[0030] The surface layer structure of the road surface of a seaport terminal of the present utility model is provided with a steel mesh composed of transverse steel bars 4 and longitudinal steel bars 3 in the cast-in-place concrete 1, which improves the bearing capacity of the road surface when it is compressed. By adding basalt fiber grids 5 to the cast-in-place concrete 1, the basalt fiber grids 5 have excellent characteristics such as light weight, high strength, and corrosion resistance. After being incorporated into the cast-in-place concrete 1, they can effectively restrain the surface cracks of the concrete and improve the appearance quality of the surface layer. Using steel cushion bars to position the basalt fiber grids can not only more accurately ensure the thickness of the protective layer of the basalt fiber grids 5, but also further improve the overall stiffness of the concrete surface layer and effectively improve the bending resistance of the road surface layer. The basalt fiber grids 5 are tied with nylon wires 7 between the transverse cushion bars 6 of the steel cushion bars, which can well fix the basalt fiber grids 5.

[0031] The above embodiments are only for illustrating the present utility model, rather than limiting the present utility model. Those skilled in the relevant technical fields can also make various transformations or modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions should also belong to the scope of the present utility model and should be defined by each claim.

Claims

1. A pavement surface structure of a seaport wharf, comprising cast-in-place concrete and a steel mesh, a steel pad and a basalt fiber mesh arranged in the cast-in-place concrete; characterized in that: The steel mesh is composed of longitudinal steel bars and transverse steel bars, wherein the longitudinal steel bars are arranged below the transverse steel bars, and the longitudinal steel bars and the transverse steel bars are tied with steel wires; The steel pads include a plurality of vertical pads and a plurality of transverse pads; the bottom of the vertical pads is welded to the transverse steel bars of the steel mesh; the transverse pads are welded to the top of the vertical pads; The basalt fiber grid is laid on a plurality of transverse pads, and the basalt fiber grid is fixed on the plurality of transverse pads by tying with nylon threads.

2. The pavement surface structure of the seaport terminal according to claim 1, characterized in that: The cast-in-place concrete adopts concrete with strength grade of C35 to C45.

3. The pavement surface structure of the seaport terminal according to claim 1, characterized in that: The thickness of the concrete protective layer of the transverse steel bars of the steel mesh is 6 to 8 cm; the height of the vertical pads is 4 to 6 cm.

4. The pavement surface structure of the seaport terminal according to claim 1, characterized in that: Each mesh formed by the intersection of longitudinal steel bars and transverse steel bars has at least one intersection tied with steel wire.

5. The pavement surface structure of the seaport terminal according to claim 1, characterized in that: The transverse gaskets are arranged transversely and throughout the entire length of the structure, and the longitudinal spacing between the plurality of transverse gaskets is 2 to 3 m.

6. The pavement surface structure of the seaport terminal according to claim 1, characterized in that: The basalt fiber grids are arranged longitudinally and overlapped transversely, the overlap size is at least three grids, and the overlaps are fixed by tying with nylon wire.

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