Deformation isolation structure for seamless pile plate type road

Abstract

The utility model discloses a deformation isolation structure for a seamless pile slab road, which comprises a corrugated steel plate and a T-shaped steel plate, the T-shaped steel plate is laid on an expansion joint of a bridge deck slab, the corrugated steel plate is arranged between the bridge deck slab and an asphalt pavement, and the corrugated steel plate stretches across the T-shaped steel plate. The temperature deformation of the beam plate is absorbed and isolated by utilizing the fold effect of the corrugated steel plate, and the influence of the deformation of the beam plate on the asphalt pavement layer is avoided, so that the seamless effect on the surface of the pile plate type road pavement structure is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway engineering. Specifically, it relates to a deformation isolation structure for seamless pile - slab roads. Background Technique

[0002] Transportation is an important basic industry and service industry for national economic and social development. At the same time, it is also a key industry for resource consumption and energy emissions, and is listed as one of the three key areas for national energy conservation, emission reduction, and response to climate change. Under the requirements of the "dual - carbon goal", building green roads with the main characteristics of resource conservation, ecological environmental protection, energy efficiency, and service improvement, and forming a set of replicable and popularizable experiences is a basic principle followed in highway construction. The pile - slab road is a new road system directly supported by precast pipe piles for precast reinforced concrete beam slabs, realizing full - factory manufacturing and full - assembly construction. It is mainly applied to the reconstruction, expansion, and new highway projects, and can be used to replace conventional high - fill subgrades and conventional viaducts substituting bridges. It is a low - carbon and high - quality new road construction technical means.

[0003] At present, pile - slab roads have been widely used in the reconstruction, expansion, and new construction of highways. The upper structure of the pile - slab road adopts the form of concrete beam slabs. Affected by the temperature shrinkage deformation, dry shrinkage deformation, etc. of the concrete material itself, expansion joints must be set at certain intervals for the concrete beam slabs to release their deformation. Since the pile - slab roads are generally applied over a long length, a large number of expansion joints will be set, resulting in poor driving comfort on the road, reducing its service quality, and further affecting the structural durability, comfort, and safety. Therefore, there is an urgent need to propose a deformation isolation structure for seamless pile - slab roads to ensure driving safety, comfort, and the durability of the pavement layer. Content of the Utility Model

[0004] The purpose of the utility model is to provide a deformation isolation structure for seamless pile - slab roads, which can isolate the expansion and contraction deformation of the beam slabs of the pile - slab structure from the asphalt pavement layer, enabling the asphalt pavement to pass continuously at the expansion joint position of the pile - slab structure, forming a seamless pile - slab road.

[0005] In order to achieve the above - mentioned utility model purpose, the utility model adopts the following technical solutions:

[0006] A deformation isolation structure for seamless pile - slab roads includes a corrugated steel plate and a T - shaped steel plate. The T - shaped steel plate is laid on the expansion joint of the bridge deck, and the corrugated steel plate is arranged between the bridge deck and the asphalt pavement, and the corrugated steel plate straddles the T - shaped steel plate.

[0007] The further technology of the utility model:

[0008] Preferably, the corrugated steel plate has a continuous circular arc waveform, with a wave pitch p of 25 - 35 mm, a wave height a of 3 - 5 mm, a wall thickness t of 2 - 3 mm, and a corrugation radius r of 21 - 30 mm.

[0009] Preferably, two rows of anchor bolts are arranged on each side of the expansion joint of the corrugated steel plate to connect and fix it to the bridge deck.

[0010] Preferably, the two rows of anchor bolts are arranged in a plum blossom pattern on the plane.

[0011] Preferably, the first row of outer anchor bolts are fixed anchor bolts, and the second row of inner anchor bolts are anti - uplift and non - shear - resistant anchor bolts. The two rows of anchor bolts are arranged in a plum blossom pattern on the plane.

[0012] Preferably, the structure of the anti - uplift and non - shear - resistant anchor bolt is as follows: an isolation sleeve is arranged at the top of the anchor bolt, and a chute is reserved at the position corresponding to the anchor bolt on the corrugated steel plate. The chute uses an oval hole to restrain the uplift of the corrugated steel plate but does not restrain its sliding.

[0013] The beneficial effects of the present utility model are:

[0014] The deformation isolation structure for seamless pile - slab roads of the present utility model utilizes the "fold effect" of the corrugated steel plate to absorb and isolate the temperature deformation of the beam slab, avoiding the influence of the beam slab deformation on the asphalt pavement layer, so as to achieve a seamless effect on the surface of the pile - slab road pavement structure.

[0015] The deformation isolation structure for seamless pile - slab roads of the present utility model uses a combination of fixed anchor bolts and anti - uplift and non - shear - resistant anchor bolts to restrain the corrugated steel plate, avoiding problems such as the corrugated steel plate being separated from, sliding on, or arching up from the concrete beam slab, and ensuring the stability of the pavement structure layer. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is the overall layout drawing of a deformation isolation structure for seamless pile - slab roads;

[0018] Figure 2 It is the shape drawing of the deformation isolation corrugated steel plate;

[0019] Figure 3 It is the structure drawing of the anti - uplift and non - shear - resistant anchor bolt;

[0020] In the figure: 1. Corrugated steel plate; 2. Bridge deck; 3. Asphalt paving; 4. T-shaped steel plate; 5. Fixed anchor bolt; 6. Uplift-resistant and shear-resistant anchor bolt; 7. Isolation sleeve; 8. Reserved chute. Specific implementation manner

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] As Figure 1 shown, a deformation isolation structure for a seamless pile-slab road includes a corrugated steel plate 1 and a T-shaped steel plate 4. The T-shaped steel plate 4 is laid on the expansion joint of the bridge deck 2. The corrugated steel plate is arranged between the bridge deck 2 and the asphalt paving 3 and spans across the T-shaped steel plate, which can isolate the expansion and contraction deformation of the bridge deck 2 of the pile-slab structure from the asphalt paving 3, enabling the asphalt paving 3 to continuously pass through at the expansion joint position of the pile-slab structure, forming a seamless pile-slab road.

[0023] As Figure 1 shown, first, a cross-span T-shaped steel plate 4 with a thickness of 5 - 6 mm is laid on both sides of the expansion joint of the pile-slab structure to bear the wheel load at the cross-span.

[0024] As Figure 1 shown, secondly, a corrugated steel plate 1 is laid on the bridge deck 2 of the pile-slab structure. The longitudinal direction of the corrugated steel plate 1 is centered on the expansion joint, with a width of 1.5 - 2 m. The transverse width is the length of the expansion joint.

[0025] As Figure 2 shown, the corrugated steel plate 1 has a continuous circular arc waveform, with a wave pitch p of 25 - 35 mm, a wave height a of 3 - 5 mm, a wall thickness t of 2 - 3 mm, and a corrugation radius r of 21 - 30 mm. The material should be selected as steel of Q235 grade or above.

[0026] As Figure 2 shown, the processing method of the corrugated steel plate 1 can adopt mechanical processing or other manufacturing methods that meet the same requirements.

[0027] As Figure 1As shown in the figure, two rows of anchor bolts are arranged on each side of the corrugated steel plate 1 on both sides of the expansion joint to connect and fix it to the bridge deck 2. The first row of outer anchor bolts is the fixed anchor bolts 5, which are fixed constraints; the second row of inner anchor bolts is the uplift-resistant and shear-resistant anchor bolts 6, which are sliding constraints. The two rows of anchor bolts are arranged in a plum blossom shape on the plane. The purpose of setting the uplift-resistant and shear-resistant anchor bolts 6 is to prevent the corrugated steel plate 1 from arching when compressed.

[0028] As Figure 3 shown, the structure of the uplift-resistant and shear-resistant anchor bolt 6 is as follows: an isolation sleeve 7 is arranged at the top of the anchor bolt, and at the same time, a chute 8 is reserved at the position corresponding to the anchor bolt on the corrugated steel plate 1. The chute 8 can adopt an oval hole to realize the function of restricting the uplift of the corrugated steel plate 1 but not restricting its sliding.

[0029] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the utility model or exceed the scope defined by this claim book, they should all belong to the protection scope of the present utility model.

Claims

1. A deformation isolation structure for seamless pile-slab roads, characterized in that It includes corrugated steel plates and T-shaped steel plates. The T-shaped steel plates are laid on the expansion joints of the bridge deck, and the corrugated steel plates are arranged between the bridge deck and the asphalt pavement and span across the T-shaped steel plates.

2. The deformation isolation structure for a seamless pile-slab road according to claim 1, characterized in that, The corrugated steel plates adopt a continuous circular arc waveform, with a wave pitch p of 25 - 35 mm, a wave height a of 3 - 5 mm, a wall thickness t of 2 - 3 mm, and a corrugation radius r of 21 - 30 mm.

3. A deformation isolation structure for a seamless pile-slab road according to claim 1, characterized in that, On each side of the expansion joint, two rows of anchor bolts are arranged on the corrugated steel plates to connect and fix them to the bridge deck.

4. A deformation isolation structure for a seamless pile-slab road according to claim 3, characterized in that The two rows of anchor bolts are arranged in a plum blossom pattern on the plane.

5. A deformation isolation structure for a seamless pile-slab road according to claim 4, characterized in that, The first row of outer anchor bolts are fixed anchor bolts, and the second row of inner anchor bolts are anti-pull but not anti-shear anchor bolts. The two rows of anchor bolts are arranged in a plum blossom pattern on the plane.

6. The deformation isolation structure for a seamless pile-slab road according to claim 5, characterized in that The structure of the anti-pull but not anti-shear anchor bolts is as follows: an isolation sleeve is arranged at the top of the anchor bolt, and a chute is reserved at the position corresponding to the anchor bolt on the corrugated steel plate. The chute adopts an oval hole to restrict the uplift of the corrugated steel plate but not its sliding.

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