A flexible rapid repair structure for an airport pavement pit

Abstract

The utility model relates to civil engineering field discloses a kind of toughness quick repair structure of airport pavement pit, including positioning frame and the repair mechanism being set to the inside of positioning frame, the bottom of positioning frame inner wall is equipped with inverted trapezoidal groove, inverted trapezoidal groove is filled with buffer layer, buffer layer top surface is covered with partition plate, partition plate top is filled with bearing layer, positioning frame inner wall middle upper portion is fixedly connected with reinforcing bar one and reinforcing bar two, reinforcing bar one and reinforcing bar two are completely covered in bearing layer inside, positioning frame outer wall front and back side is equipped with multiple groups of dispersion hole, positioning frame outer wall left and right side is equipped with multiple groups of communication groove.The utility model is through the composite structure of rigid-flexible combination, realizes mechanical lock with inverted trapezoidal groove, improves overall rigidity by reinforcing bar, utilizes dispersion hole and communication groove to enhance and original pavement occlusal force, effectively solve the problem that repair interface is easy to fail and rigid-flexible contradiction.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering, and in particular to a tough and rapid repair structure for potholes on airport pavements. Background Technology

[0002] Airport pavements are a critical infrastructure of airports, bearing enormous impact and friction loads as well as complex weather conditions during aircraft takeoff, landing, taxiing, and parking. They are highly susceptible to structural defects such as potholes, spalling, and cracks. These defects not only affect the operational safety and efficiency of the airport but also damage aircraft. Therefore, timely and effective repair of pavement defects is of paramount importance.

[0003] Existing airport pavement repair technologies primarily employ traditional high-strength concrete for rapid repairs. While this provides high early strength, traditional high-strength concrete lacks toughness, exhibiting relatively weak tensile and flexural strength. When the pavement is subjected to significant impacts or minor deformations in the base layer, the repair blocks often struggle to effectively absorb and disperse energy, leading to reflective cracks or voids at the interface between the repair and the original pavement. This results in rapid failure of the repair structure and a short service life. To improve the durability of the repair structure, some improvements have introduced fiber-reinforced materials to enhance their toughness. However, even with fiber-reinforced materials, the interface between the repair and the original pavement remains a weak point when facing the immense horizontal shear forces and vertical impacts of airport pavements. This is especially true when the repair structure uses layered or composite materials, where insufficient interlayer bonding can lead to interlayer slippage or separation under load, causing the entire repair structure to disintegrate. Furthermore, during construction, the connection between the edges and sides of the repair blocks and the original pavement often relies on simple adhesive bonding, resulting in weak mechanical interlocking. When the repair blocks are subjected to braking forces in the horizontal direction, displacement or detachment can occur.

[0004] Therefore, this utility model proposes a tough and rapid repair structure for potholes on airport pavements to address the shortcomings of existing technologies. Utility Model Content

[0005] In view of the problems existing in the technology of a tough and rapid repair structure for airport pavement potholes, such as low reliability of the connection between the repair body and the original pavement, easy generation of reflective cracks, and difficulty in simultaneously meeting the dual performance requirements of tough buffering of the bottom layer and high strength load-bearing of the surface layer, this utility model aims to provide a tough and rapid repair structure for airport pavement potholes with improved structure that can effectively solve the above problems.

[0006] This utility model provides a tough and rapid repair structure for potholes on airport pavement, including: a positioning frame and a repair mechanism disposed inside the positioning frame.

[0007] The positioning frame has an inverted trapezoidal groove at the bottom of its inner wall, and a reinforcing rib and a reinforcing rib are fixedly connected to the upper part of the inner wall. The positioning frame has multiple sets of dispersing holes penetrating the outer wall on its front and rear sides, and multiple sets of connecting grooves penetrating the outer wall on its left and right sides.

[0008] Furthermore, the inverted trapezoidal groove is filled with the buffer layer, the top surface of the buffer layer is horizontally covered by the partition plate, the partition plate is filled with the bearing layer, and the first reinforcing rib and the second reinforcing rib are completely enclosed in the bearing layer. The buffer layer, the bearing layer and the positioning frame are combined in this composite manner to form an integral whole with rigid-flexible composite characteristics and multiple mechanical locking.

[0009] Preferably, the dispersion hole is used to connect the bearing layer with the external space of the positioning frame, and the dispersion hole and the connecting groove are used to improve the connectivity between the repair mechanism and the inner wall of the external groove to be repaired.

[0010] Preferably, the connecting groove extends along the height direction of the positioning frame, and the connecting groove is used to further enhance the fixation between the repair mechanism and the inner wall of the groove to be repaired.

[0011] Preferably, the first reinforcing rib is horizontally arranged along the length direction of the positioning frame, and both ends of the first reinforcing rib are fixedly connected to the inner wall of the positioning frame.

[0012] Preferably, the second reinforcing rib is horizontally arranged along the width direction of the positioning frame, and both ends of the second reinforcing rib are fixedly connected to the inner wall of the positioning frame, and the second reinforcing rib and the first reinforcing rib are distributed in an interlaced mesh pattern.

[0013] Preferably, the inverted trapezoidal groove has a cross-section that is narrower at the top and wider at the bottom, and the inverted trapezoidal groove is used to limit the displacement of the buffer layer in the vertical direction.

[0014] Preferably, the edge of the partition plate is in close contact with the inner wall of the positioning frame, and the partition plate is used to physically isolate the buffer layer from the load-bearing layer.

[0015] Preferably, the buffer layer is made of high-ductility mortar, and the load-bearing layer is made of high-strength fiber concrete.

[0016] This utility model has the following beneficial effects: 1. This utility model uses high-ductility mortar to form a buffer layer and high-strength fiber concrete to form a load-bearing layer, and uses a partition plate for isolation to form a composite repair structure that combines rigidity and flexibility. This solves the contradiction in the existing repair structure that it is difficult to absorb impact energy and bear high-intensity load at the same time. It achieves the effect of the bottom layer effectively absorbing and dispersing the impact energy of aircraft loads and preventing reflective cracks, while the top layer provides sufficient load-bearing capacity.

[0017] 2. This utility model solves the problems of poor connection and easy failure between the repair block and the original track surface in the prior art by fixing and connecting two reinforcing ribs to the upper part of the inner wall of the positioning frame and covering the inside of the bearing layer, and by opening dispersion holes on the front and rear sides and connecting grooves on the left and right sides of the outer wall of the positioning frame. It achieves a significant improvement in the strength and rigidity of the repair structure, while enhancing the mechanical engagement and fixation between the repair body and the inner wall of the inverted stepped groove, thereby strengthening the overall reliability. Attached Figure Description

[0018] Figure 1 A perspective view of a resilient and rapid repair structure for potholes on airport pavement proposed in this utility model; Figure 2 This is a partial structural breakdown diagram of the positioning frame for a tough and rapid repair structure for potholes on airport pavement proposed in this utility model. Figure 3 This is a partial structural diagram of the positioning frame for a tough and rapid repair structure for potholes on airport pavement proposed in this utility model. Figure 4 This is a partial structural breakdown of the load-bearing layer of a tough and rapid repair structure for potholes on airport pavements proposed in this utility model.

[0019] Legend: 1. Positioning frame; 2. Repair mechanism; 201. Dispersion hole; 202. Bearing layer; 203. Buffer layer; 204. Connecting groove; 205. Reinforcing rib one; 206. Reinforcing rib two; 207. Partition plate; 208. Inverted trapezoidal groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0021] Example: Please refer to Figures 1 to 4This utility model provides a tough and rapid repair structure for potholes on airport pavements, aiming to solve the structural contradiction in existing airport pavement repair structures, namely, insufficient reliability of the repair interface connection and difficulty in simultaneously absorbing impact energy and bearing high-intensity loads.

[0022] Please refer to Figure 1 and Figure 2 A resilient and rapid repair structure for potholes on airport pavement includes a positioning frame 1 and a repair mechanism 2 disposed inside the positioning frame 1. The positioning frame 1 serves as a mold for reference positioning and an outer frame of the load-bearing body during the repair process, while the repair mechanism 2 is used to form a buffer layer 203 and a load-bearing layer 202 of a composite structure.

[0023] The repair mechanism 2 includes a buffer layer 203 and a bearing layer 202. The buffer layer 203 is located at the bottom, and the bearing layer 202 is located at the top. The buffer layer 203 and the bearing layer 202 are horizontally separated by a partition plate 207. The upper part of the inner wall of the positioning frame 1 is fixedly connected with a first reinforcing rib 205 and a second reinforcing rib 206. The first reinforcing rib 205 and the second reinforcing rib 206 penetrate and completely cover the interior of the bearing layer 202 to form a composite reinforcing structure. The bottom of the inner wall of the positioning frame 1 is provided with an inverted trapezoidal groove 208 to accommodate the buffer layer 203. The front and rear sides of the outer wall of the positioning frame 1 are provided with multiple sets of dispersing holes 201 penetrating the outer wall. The left and right sides of the outer wall of the positioning frame 1 are provided with multiple sets of connecting grooves 204 penetrating the outer wall.

[0024] Please refer to Figure 1 , Figure 2 and Figure 4 Reinforcing rib 1 205 and reinforcing rib 206 are strip-shaped bodies made of steel bars or fiber-reinforced composite materials, used to form a composite reinforcement structure with the load-bearing layer 202. Reinforcing rib 1 205 is horizontally arranged along the length of the positioning frame 1, and both ends of reinforcing rib 1 205 are fixedly connected to the upper middle part of the inner wall of the positioning frame 1 by welding or bolts. The second reinforcing rib 206 is horizontally arranged along the width direction of the positioning frame 1. The two ends of the second reinforcing rib 206 are also fixedly connected to the upper middle part of the inner wall of the positioning frame 1 by welding or bolts. The second reinforcing rib 206 and the first reinforcing rib 205 are distributed in an interlaced mesh to form a complete internal skeleton. The skeleton is completely immersed in and covers the cast-in-place load-bearing layer 202. This built-in skeleton structure ensures that the load-bearing layer 202 has higher flexural strength and overall rigidity, and can withstand the huge impact force of the aircraft load. At the same time, an inverted trapezoidal groove 208 is provided at the bottom of the inner wall of the positioning frame 1. The inverted trapezoidal groove 208 is used to limit the displacement of the bottom-filled buffer layer 203 in the vertical direction, enhance the pull-out resistance of the buffer layer 203, and ensure the overall stability of the repair block.

[0025] Multiple sets of dispersion holes 201 are opened on the front and rear sides of the outer wall of the positioning frame 1, and multiple sets of connecting grooves 204 are opened on the left and right sides of the outer wall of the positioning frame 1. The dispersion holes 201 and the connecting grooves 204 penetrate the outer wall of the positioning frame 1. The dispersion holes 201 connect the bearing layer 202 and the external space of the positioning frame 1. The connecting grooves 204 extend along the height direction of the positioning frame 1. After the repair mechanism 2 is cast and formed, the dispersion holes 201 and the connecting grooves 204 allow some of the cast material to overflow, contact and solidify with the inner wall of the inverted stepped groove to be repaired. This design increases the mechanical interlocking area and connection depth between the repair structure and the original surface, thereby strengthening the overall fixation and preventing the repair block from sliding or being pulled out laterally.

[0026] Regarding the setting of the partition plate 207, the partition plate 207 is placed on the upper surface of the buffer layer 203, and its edge is closely attached to the inner wall of the positioning frame 1. The function of the partition plate 207 is to physically isolate the upper and lower layers of materials, prevent the high ductility mortar and high strength fiber concrete from mixing during the pouring process, and ensure that the material properties of the buffer layer 203 and the bearing layer 202 are independently performed. This isolation layer design ensures the T-shaped track-slide mating structure, and ensures the high stability and anti-deflection ability of the repair mechanism 2 during the movement process.

[0027] Regarding the material selection for the repair mechanism 2, the buffer layer 203 is made of high-ductility mortar to absorb impact energy and adapt to base deformation, while the load-bearing layer 202 is made of high-strength fiber concrete to provide the required strength and rigidity for the road surface.

[0028] In a preferred embodiment, the dispersion hole 201 and the connecting groove 204 are used to enhance the connection between the repair mechanism 2 and the inner wall of the external groove to be repaired. The dispersion hole 201 connects the bearing layer 202 and the external space of the positioning frame 1. When the bearing layer 202 is poured, some high-strength fiber concrete will penetrate into the original pavement through the dispersion hole 201 to form an anchoring effect. The connecting groove 204 extends along the height direction of the positioning frame 1, so that the materials of the buffer layer 203 and the bearing layer 202 have the opportunity to contact the original pavement through the connecting groove 204, further improving the fixation of the repair structure in the horizontal and vertical directions.

[0029] As another preferred embodiment, please refer to Figure 2 The first reinforcing rib 205 is horizontally arranged along the length of the positioning frame 1, and both ends of the first reinforcing rib 205 are fixedly connected to the upper middle part of the inner wall of the positioning frame 1. The second reinforcing rib 206 is horizontally arranged along the width of the positioning frame 1, and both ends of the second reinforcing rib 206 are fixedly connected to the upper middle part of the inner wall of the positioning frame 1. The second reinforcing rib 206 and the first reinforcing rib 205 are distributed in an interlaced mesh pattern. This bidirectional interlaced arrangement maximizes the constraint effect of the skeleton, so that the bearing layer 202 is uniformly and significantly reinforced in both main force directions.

[0030] As another preferred embodiment, the cross-section of the inverted trapezoidal groove 208 has a geometric shape that is narrow at the top and wide at the bottom. After the repair structure is cured, this inward-shrinking structure can constrain the buffer layer 203 by means of mechanical interlocking, effectively limiting the displacement or pull-out of the buffer layer 203 in the vertical direction when the repair block is under force, thereby further enhancing the bonding force between the repair body and the positioning frame 1.

[0031] As another preferred embodiment, the edge of the partition plate 207 is closely fitted to the inner wall of the positioning frame 1. The partition plate 207 acts as a temporary or permanent physical barrier during the pouring process to physically isolate the buffer layer 203 of high ductility mortar material from the load-bearing layer 202 of high-strength fiber concrete material, ensuring that the performance and interface of the upper and lower layers of materials are clear and preventing the mixing of materials from causing performance degradation.

[0032] As another preferred embodiment, the buffer layer 203 preferably uses a high-ductility mortar material to provide the necessary flexibility for the base layer, absorb the impact energy of aircraft loads, and adapt to minor deformations of the base layer. The load-bearing layer 202 preferably uses a high-strength fiber reinforced concrete material to ensure that the top layer has sufficient compressive and flexural strength to meet the stringent load-bearing requirements of the airport runway.

[0033] Working principle: When potholes appear on the airport pavement and need repair, the pothole to be repaired is first chiseled into an inverted stepped groove. The positioning frame 1 is placed in the inverted stepped groove to complete the reference positioning. The inverted stepped groove 208 is set upwards. Then, high-ductility mortar is poured into the inverted stepped groove 208 at the bottom of the inner wall of the positioning frame 1. After the high-ductility mortar cures, it forms a buffer layer 203. The buffer layer 203 can effectively absorb and disperse the impact energy of the aircraft load and adapt to the small deformation of the base layer, preventing reflective cracks. The geometric shape of the inverted stepped groove 208, which is narrow at the top and wide at the bottom, can form a mechanical lock on the buffer layer 203 to prevent vertical displacement. Then, a partition plate 207 is covered on the upper surface of the buffer layer 203. The edge of the partition plate 207 is tightly attached to the inner wall of the positioning frame 1 to physically isolate the upper and lower materials. Then, high-strength fiber concrete is poured on the upper layer of the partition plate 207 to form a load-bearing layer 202. The load-bearing layer 202 provides sufficient strength and rigidity. During the casting process of the bearing layer 202, the reinforcing ribs 205 and 206, which are fixedly connected to the upper part of the inner wall of the positioning frame 1, completely cover the interior of the bearing layer 202, forming a steel skeleton reinforcement effect, which greatly improves the flexural strength of the bearing layer 202. In addition, during the casting process, some high-strength fiber concrete or high-ductility mortar will seep out through the dispersion holes 201 and connecting grooves 204 on the outer wall of the positioning frame 1, forming a mechanical interlock with the inner wall of the stepped groove to be repaired, enhancing the connection and overall fixation between the repair body and the original pavement, and finally forming a composite repair structure of flexible bottom buffer layer 203 plus rigid surface bearing layer 202, achieving a unity of toughness and strength.

Claims

1. A resilient and rapid repair structure for potholes on airport pavement, comprising: Positioning frame (1), and repair mechanism (2) disposed inside the positioning frame (1); Its features are, The bottom of the inner wall of the positioning frame (1) is provided with an inverted trapezoidal groove (208), the inverted trapezoidal groove (208) is filled with a buffer layer (203), the top surface of the buffer layer (203) is horizontally covered with a partition plate (207), the partition plate (207) is filled with a bearing layer (202), the upper part of the inner wall of the positioning frame (1) is fixedly connected with a first reinforcing rib (205) and a second reinforcing rib (206), the first reinforcing rib (205) and the second reinforcing rib (206) are completely covered inside the bearing layer (202), the front and rear sides of the outer wall of the positioning frame (1) are provided with multiple sets of dispersing holes (201) penetrating the outer wall, and the left and right sides of the outer wall of the positioning frame (1) are provided with multiple sets of connecting grooves (204) penetrating the outer wall.

2. The resilient and rapid repair structure for potholes on airport pavement according to claim 1, characterized in that, The dispersion hole (201) is used to connect the bearing layer (202) with the external space of the positioning frame (1), and the dispersion hole (201) and the connecting groove (204) are used to improve the connection between the repair mechanism (2) and the inner wall of the external groove to be repaired.

3. The resilient and rapid repair structure for potholes on airport pavement according to claim 1, characterized in that, The connecting groove (204) extends along the height direction of the positioning frame (1), and the connecting groove (204) is used to further enhance the fixation of the repair mechanism (2) to the inner wall of the groove to be repaired.

4. The resilient and rapid repair structure for potholes on airport pavement according to claim 1, characterized in that, The first reinforcing rib (205) is horizontally arranged along the length direction of the positioning frame (1), and the two ends of the first reinforcing rib (205) are fixedly connected to the inner wall of the positioning frame (1).

5. A tough and rapid repair structure for potholes on airport pavement according to claim 4, characterized in that, The second reinforcing rib (206) is horizontally arranged along the width direction of the positioning frame (1). The two ends of the second reinforcing rib (206) are fixedly connected to the inner wall of the positioning frame (1), and the second reinforcing rib (206) and the first reinforcing rib (205) are distributed in an interlaced mesh pattern.

6. The resilient and rapid repair structure for potholes on airport pavement according to claim 1, characterized in that, The inverted trapezoidal groove (208) has a cross-section that is narrower at the top and wider at the bottom. The inverted trapezoidal groove (208) is used to limit the displacement of the buffer layer (203) in the vertical direction.

7. The resilient and rapid repair structure for potholes on airport pavement according to claim 1, characterized in that, The edge of the partition plate (207) is closely fitted to the inner wall of the positioning frame (1), and the partition plate (207) is used to physically isolate the buffer layer (203) from the bearing layer (202).

8. A tough and rapid repair structure for potholes on airport pavement according to claim 1, characterized in that, The buffer layer (203) is made of high-ductility mortar, and the bearing layer (202) is made of high-strength fiber concrete.

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