Paving structure for seamless pile plate type road

Abstract

The utility model discloses a paving structure for a seamless pile plate type road, which comprises a pile plate type road bridge deck plate paving structure and a plate type road expansion joint position paving structure, and the pile plate type road bridge deck plate paving structure comprises a bridge deck plate, a waterproof bonding layer, a paving lower surface layer, a paving middle surface layer and a paving upper surface layer from bottom to top, the plate type road expansion joint position pavement structure comprises a bridge deck slab, a flexible transition layer, a corrugated steel plate, a pavement lower surface layer, a pavement middle surface layer and a pavement upper surface layer from bottom to top. According to the paving structure for the seamless pile plate type road, the corrugated steel plate is adopted at the position of the expansion joint, the temperature deformation of the bridge deck slab is absorbed through the deformation of the corrugated steel plate, the bridge deck slab is isolated from the paving layer structure, the influence of the deformation of the bridge deck slab on the upper paving layer is avoided, and therefore the seamless effect on the surface of the paving structure of the pile plate type road is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway engineering, and in particular relates to a paving structure for seamless pile-slab type roads. Background Art

[0002] Currently, pile-slab roads are widely used in highway reconstruction, expansion, and new construction. The upper structure of pile-slab roads uses concrete beams and slabs. Due to the inherent deformation of the concrete material due to thermal and drying shrinkage, expansion joints must be installed at regular intervals to release deformation. Pile-slab roads are generally used for long lengths, resulting in a large number of expansion joints. This can lead to poor driving comfort, reduce service quality, and further affect the durability, comfort, and safety of the structure. Therefore, there is an urgent need to propose a seamless pile-slab road pavement structure type to ensure driving safety, comfort, and the durability of the pavement layer. Utility Model Content

[0003] The purpose is to provide a paving structure for seamless pile-slab roads, which can isolate and absorb the deformation of beam-slab expansion joints, so that the asphalt mixture paving is not affected, cracks will not appear on the top surface of the pile-slab road, and the durability, comfort and safety of the pile-slab road will be improved.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A paving structure for a seamless pile-slab road, comprising a pile-slab road bridge deck paving structure and a slab road expansion joint position paving structure;

[0006] The pile-slab type road bridge deck pavement structure comprises, from bottom to top, a bridge deck, a waterproof bonding layer, a pavement lower layer, a pavement middle layer, and a pavement upper layer, wherein each structural layer is pressed together by gravity to form an integral structure;

[0007] The pavement structure at the expansion joint position of the plate-type road includes, from bottom to top, a bridge deck, a flexible transition layer, a corrugated steel plate, a pavement lower layer, a pavement middle layer, and a pavement upper layer. The various structural layers are pressed together by gravity to form an integral structure.

[0008] Further technology of this utility model:

[0009] Preferably, the waterproof bonding layer includes, from bottom to top, a water-based permeable inorganic waterproofing agent layer, a heat-modified asphalt layer, and an asphalt pre-coated gravel layer.

[0010] Preferably, the water-based penetrating inorganic waterproofing agent is spread in two layers.

[0011] Preferably, the thickness of the flexible transition layer is 1 / 2 of the wave height of the corrugated steel plate.

[0012] Preferably, the wave height of the corrugated steel plate is 3 to 6 mm, the wave distance is 16 to 32 mm, and the thickness of the steel plate is 1.5 to 2.5 mm.

[0013] Preferably, both ends of the corrugated steel plate are fixed to the bridge deck with bolts at a distance of 5 to 10 cm from the end points.

[0014] Preferably, the pavement lower layer, the pavement middle layer and the pavement upper layer are bonded together by an adhesive layer.

[0015] The beneficial effects of the utility model are:

[0016] The utility model discloses a paving structure for seamless pile-slab type roads. Corrugated steel plates are used at the expansion joint positions. The deformation of the corrugated steel plates is utilized to absorb the temperature deformation of the bridge deck and to isolate the bridge deck from the pavement layer structure, thereby avoiding the influence of the deformation of the bridge deck on the pavement layer above, thereby achieving a seamless effect on the surface of the pile-slab type road pavement structure.

[0017] The utility model discloses a paving structure for seamless pile-slab roads. A flexible transition layer is provided between the corrugated steel plate and the concrete plate, and can completely fill the space between the corrugated plate and the concrete beam plate, thereby ensuring the interlayer bonding layer and being able to adapt to the deformation of the corrugated steel plate. The corrugated steel plate is fixed with bolts to avoid problems such as the corrugated steel plate and the concrete beam plate from becoming empty, slipping, and arching, thereby ensuring the stability of the paving structure layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the structure of this utility model;

[0020] Figure 2 Schematic diagram of the waterproof bonding layer structure;

[0021] In the figure: 1. Pavement upper layer; 2. Pavement middle layer; 3. Pavement lower layer; 4. Waterproof bonding layer; 41. Water-based penetrating inorganic waterproofing agent layer; 42. Thermally modified asphalt layer; 43. Asphalt pre-coated gravel layer; 5. Bridge deck; 6. Corrugated steel plate; 7. Bolts; 8. Flexible transition layer. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-2 The utility model provides a paving structure for seamless pile-slab type roads, including a pile-slab type road bridge deck paving structure and a slab type road expansion joint position paving structure;

[0024] The pile-slab road bridge deck pavement structure includes, from bottom to top, a bridge deck 5, a waterproof bonding layer 4, a 3cm AC-5 pavement lower layer 3, a 6cm AC-20 pavement middle layer 2, and a 4cm AC-13 pavement upper layer 1.

[0025] The paving structure at the expansion joint position of the plate-type road includes a bridge deck 5, a rubber asphalt flexible transition layer 8, a corrugated steel plate 6, a 3cm AC-5 paving lower layer 3, a 6cm AC-20 paving middle layer 2, and a 4cm AC-13 paving upper layer 1.

[0026] The lower pavement layer is asphalt sand, the maximum particle size of the asphalt sand aggregate is 4.75 mm, the void ratio of the asphalt sand is less than 2%, and the thickness of the asphalt sand in the lower pavement layer is 2.5 to 3.5 cm.

[0027] The middle surface layer of the pavement is a medium-grained asphalt mixture with a thickness of 5 to 8 cm, and the lower layer of the pavement is a fine-grained asphalt mixture with a thickness of 3.5 to 5 cm. The void ratio of the lower layer of the pavement AC-5 is 1.8%.

[0028] The waterproof bonding layer 4 includes a water-based penetrating inorganic waterproofing agent layer 41, a heat-modified asphalt layer 42, and an asphalt pre-wrapped gravel layer 43. The water-based penetrating inorganic waterproofing agent is applied in two layers, with each layer applying 250g / m 2 , the thermally modified asphalt is SBS modified asphalt, the dosage is 1.8kg / m 2 Asphalt pre-coated gravel uses ordinary asphalt with a 2.0% oil-stone ratio and coated with a single particle size of 4.75-9.5 mm gravel.

[0029] The corrugated steel plate 6 has a wave height of 4 mm, a wave spacing of 20 mm, and a thickness of 2 mm. Both ends of the corrugated steel plate are fixed to the bridge deck with bolts 7 at a distance of 8 cm from the end points. The transverse width of the corrugated steel plate is the length of the expansion joint, and the longitudinal direction of the corrugated steel plate is centered on the expansion joint and has a width of 2 m.

[0030] The flexible transition layer 8 is made of high-viscosity rubber asphalt and has a thickness of 2 mm.

[0031] The modified emulsified asphalt tack coat is used to bond the lower pavement layer, the middle pavement layer and the upper pavement layer. The amount of modified asphalt tack coat sprayed is 0.4kg / m 2 .

[0032] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A pavement structure for a seamless pile-slab road, characterized in that: Including pile-slab road bridge deck paving structure, slab road expansion joint position paving structure; The pile-slab type road bridge deck pavement structure comprises, from bottom to top, a bridge deck, a waterproof bonding layer, a pavement lower layer, a pavement middle layer, and a pavement upper layer, wherein each structural layer is pressed together by gravity to form an integral structure; The pavement structure at the expansion joint position of the plate-type road includes, from bottom to top, a bridge deck, a flexible transition layer, a corrugated steel plate, a pavement lower layer, a pavement middle layer, and a pavement upper layer. The various structural layers are pressed together by gravity to form an integral structure.

2. A pavement structure for seamless pile-board roads according to claim 1, characterized in that: The waterproof bonding layer comprises, from bottom to top, a water-based permeable inorganic waterproofing agent layer, a heat-modified asphalt layer, and an asphalt pre-wrapped crushed stone layer.

3. A pavement structure for seamless pile-board roads according to claim 2, characterized in that: Water-based penetrating inorganic waterproofing agent is spread in two layers.

4. The pavement structure for seamless pile-board roads according to claim 1, characterized in that: The thickness of the flexible transition layer is 1 / 2 of the wave height of the corrugated steel plate.

5. The pavement structure for seamless pile-board roads according to claim 1, characterized in that: The wave height of the corrugated steel plate is 3-6 mm, the wave distance is 16-32 mm, and the thickness of the steel plate is 1.5-2.5 mm.

6. A pavement structure for seamless pile-board roads according to claim 1, characterized in that: The two ends of the corrugated steel plate are fixed to the bridge deck with bolts at a distance of 5 to 10 cm from the end points.

7. A pavement structure for a seamless pile-sheet road according to claim 1, characterized in that: The paving lower layer, the paving middle layer and the paving upper layer are bonded together by using an adhesive layer.

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