Polyurethane concrete steel bridge deck pavement structure integrated with self-adaptive drainage and anti-blocking mechanism

Abstract

The application discloses a polyurethane concrete steel bridge deck pavement structure integrated with self-adaptive drainage and anti-blocking mechanism, which comprises a steel bridge deck plate, supporting pieces and a pavement layer, two or more supporting pieces are fixed on the steel bridge deck plate, the pavement layer is arranged on the steel bridge deck plate, and a reinforcing piece is further arranged on the steel bridge deck plate. The supporting pieces are arranged on the steel bridge deck plate, so that the steel bridge deck plate and the pavement layer form a bridge deck structure subjected to integral stress, the frictional resistance of the pavement layer in the longitudinal and transverse directions is increased, the concentrated stress of the vehicle wheel load is dispersed, the longitudinal and transverse horizontal deformation of the maximum strain area is reduced, and the shearing resistance of the pavement structure is improved. The reinforcing piece can reinforce the lateral support of the pavement layer. The drainage groove and the anti-blocking piece are matched with each other, so that the accumulated water on the bridge deck can be quickly drained. The pavement layer made of the novel high-elastic polyurethane concrete material has high strength, small elastic modulus, excellent compressive resistance, bending resistance and bonding strength.

Description

Technical Field

[0001] This invention relates to the field of pavement, and more specifically, to a polyurethane concrete steel bridge deck pavement structure that integrates adaptive drainage and anti-clogging mechanisms. Background Technology

[0002] With the development of transportation infrastructure, more and more bridges are being built. Among them, steel structure bridges are increasingly favored due to their recyclability, low construction waste, and low construction cost. However, due to the special structure of steel bridge decks, such as longitudinal and transverse ribs, the local stress of the steel bridge deck pavement structure is complex under repeated wheel loads, making it prone to fatigue cracking on the surface. The ductility of the bridge deck pavement material is relatively low, and its compressive and flexural strengths are not very high. Summary of the Invention

[0003] The technical problem this invention aims to solve is that existing steel bridge deck pavements have low strength and are prone to cracking. To overcome the shortcomings of the prior art, this invention proposes a polyurethane concrete steel bridge deck pavement structure that integrates adaptive drainage and anti-clogging mechanisms. This structure has high strength, strong crack resistance, and can overcome the problem of interface slippage.

[0004] To achieve this objective, the present invention adopts the following technical solution: This invention provides a polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms, including a steel bridge deck, supporting members and a pavement layer. Two or more supporting members are fixed on the steel bridge deck, the pavement layer is laid on the steel bridge deck, and reinforcing members are also provided on the steel bridge deck.

[0005] In a preferred embodiment of the present invention, the reinforcing member includes a side plate and an end plate. A pull plate is provided on the side of the side plate and is embedded in the pavement layer. The pull plate is inclined upward from the side plate. The end plate is provided at both ends of the side plate and is provided with a connecting rod. The connecting rod connects to the inner side of the side plate.

[0006] In a preferred embodiment of the present invention, the reinforcing member further includes a support plate, which is a triangular plate. A locking block is fixed on one side of the support plate. The outer side of the side plate and the outer side of the end plate are both provided with locking grooves. The support plate is inserted into the locking grooves through the locking block. A base is provided at the bottom of the support plate to increase the contact area.

[0007] In a preferred embodiment of the present invention, two or more drainage channels are provided on the pavement layer, and a drainage pipe is connected to the top of the drainage channel, extending to the outside of the pavement layer.

[0008] In a preferred embodiment of the present invention, the drainage trough is provided with an anti-clogging component, which includes a sieve plate, a drive rod, a lever, a support rod, a spring, and a unblocking plate. The sieve plate is located at the top of the drainage trough, and a drive channel is provided on one side of the drainage trough. The drive channel is connected to the drainage trough via a connecting channel. The support rod is fixed in the connecting channel, and the lever is rotatably connected to the support rod. The drive rod is inserted into the drive channel, and a slot is provided at the bottom of the drive channel. The spring is located in the slot, and the bottom of the drive rod is connected to the spring. One end of the lever is rotatably connected to the drive rod, and the other end of the lever extends into the drainage trough. The unblocking plate is slidably connected to the drainage trough, and two or more insert rods are provided on the unblocking plate. The insert rods are engaged with the sieve plate. A slide rail is provided at the bottom of the unblocking plate, and a slider is slidably connected to the slide rail. The other end of the lever is rotatably connected to the slider.

[0009] In a preferred embodiment of the present invention, the anti-blocking component further includes a sleeve and a locking hook. A locking groove is provided at the bottom of the sieve plate. The sleeve is fitted onto the lever, and the locking hook is connected to the sleeve and inserted into the locking groove.

[0010] In a preferred embodiment of the present invention, a flexible cylinder is sleeved on the outside of the support member, and a disc is fixed on the top of the support member.

[0011] In a preferred embodiment of the present invention, the paving layer is filled with polyurethane concrete, which is made by mixing 1 part polyurethane A, 1 part polyurethane B, 0.01 part retarder, 0.15 part dehumidifier, 2 parts silicate cement, 1.92 parts 4.75mm basalt and 1.08 parts 2.36mm basalt.

[0012] The beneficial effects of this invention are as follows: This invention provides a polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms. By adding support components to the steel bridge deck, the steel bridge deck and the pavement layer form an integrally stressed bridge deck structure, increasing the frictional resistance of the pavement layer in both longitudinal and transverse directions, dispersing the concentrated stress of vehicle wheel loads, and reducing the longitudinal and transverse horizontal deformation in the maximum strain zone, thereby improving the shear resistance of the pavement structure. The added reinforcements can strengthen the lateral support of the pavement layer. The drainage channels and anti-clogging components work together to quickly drain water accumulated on the bridge surface. The pavement layer, made of a novel high-elasticity polyurethane concrete material, has high strength, low elastic modulus, and excellent compressive, flexural, and bond strength. Attached Figure Description

[0013] Figure 1 This is a front view structural schematic diagram of a polyurethane concrete steel bridge deck pavement structure with integrated adaptive drainage and anti-clogging mechanism provided by a specific embodiment of the present invention. Figure 2 yes Figure 1The intention of the top-down structural view; Figure 3 yes Figure 2 Enlarged diagram of A in the middle; Figure 4 This is a schematic diagram of the drainage channel structure in a polyurethane concrete steel bridge deck pavement structure that integrates adaptive drainage and anti-clogging mechanisms, provided by a specific embodiment of the present invention.

[0014] In the picture: 1-Steel bridge deck, 21-Support component, 22-Flexible cylinder, 23-Disc body, 3-Paving layer, 41-Side plate, 42-Slot, 43-Support plate, 44-Card block, 45-Base, 46-Pull plate, 47-End plate, 48-Connecting rod, 51-Drainage channel, 52-Drainage pipe, 53-Screen plate, 54-Locking slot, 55-Connecting channel, 56-Drainage plate, 57-Insertion rod, 61-Drive channel, 62-Slotted, 63-Drive rod, 64-Spring, 65-Baffle. 71-Lever, 72-Slide rail, 73-Slider, 74-Sleeve, 75-Locking hook. Detailed Implementation

[0015] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1-4 As shown, the embodiment provides a polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms, including a steel bridge deck 1, supporting members 21, and a pavement layer 3. Two or more supporting members 21 are fixed to the steel bridge deck 1, and the pavement layer 3 is laid on the steel bridge deck 1. Reinforcing members are also provided on the steel bridge deck 1. The pavement layer 3 of the polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms is made of polymer-modified polyurethane material, mixed with two types of single-size crushed stone and filler, forming a single-layer structure with high strength, lightweight, and low modulus. Figure 1 As shown, a single-layer pavement structure is cast on the steel bridge deck 1. Support members 21 are installed on the steel bridge deck 1. The pavement layer 3 has a thickness of 5-8 cm. The support members 21 are arranged longitudinally and transversely with a spacing of 10-50 cm. This steel bridge deck pavement structure is easy to construct and its quality is easily controlled. After paving, no compaction is required, and the paving speed is fast. The welded studs on the steel bridge deck 1 form an integral load-bearing bridge deck structure with the pavement layer 3, increasing the frictional resistance of the pavement layer 3 in both longitudinal and transverse directions, dispersing the concentrated stress from vehicle wheel loads, reducing the longitudinal and transverse horizontal deformation in the maximum strain zone, improving the shear resistance of the pavement structure, and ensuring that the asphalt pavement layer 3 does not experience horizontal displacement.

[0017] In this embodiment, the polyurethane concrete material consists of isocyanate polyurethane A, polyether polyol polyurethane B, silicate cement, water-reducing agent, retarder, and two types of basalt with single particle sizes of 4.75 mm and 2.36 mm. The mass ratios of each material are shown in Table 1-1. Table 1-1 Furthermore, the reinforcing member includes a side plate 41 and an end plate 47. A pull plate 46 is provided on the side of the side plate 41, embedded within the pavement layer 3, and the pull plate 46 is inclined upwards from the side plate 41. The end plate 47 is located at both ends of the side plate 41, and a connecting rod 48 is provided on the end plate 47, connecting to the inner side of the side plate 41. The side plate 41, located on the side of the pavement layer 3, facilitates concrete laying, provides support during concrete forming to prevent concrete overflow, and after concrete forming, the side plate 41 also provides support for the pavement layer 3, sharing lateral pressure. Meanwhile, the end plates 47 at both ends of the side plate 41 are connected to the side plate 41 via connecting rods 48. After the concrete is poured, the concrete presses down on the connecting rods 48, and the two ends of the connecting rods 48 tighten the end plates 47 and the side plates 41, connecting the side plates 41 and the end plates 47. The side plates 41 on both sides and the end plates 47 at both ends are connected and tightened to form a closed frame structure, providing sufficient support for the pavement layer 3. After the pavement layer 3 is formed and cured, the connecting rods 48 are embedded in the pavement layer 3 and fixed in place. As a fixed component, they tighten the end plates 47 and the side plates 41, so that the side plates 41 and the end plates 47 can always provide support for the pavement layer 3.

[0018] Furthermore, the reinforcing member also includes a support plate 43, which is a triangular plate. A locking block 44 is fixed to one side of the support plate 43. The outer side of the side plate 41 and the outer side of the end plate 47 both have slots 42. The support plate 43 is inserted into the slots 42 via the locking block 44. A base 45 is provided at the bottom of the support plate 43 to increase the contact area. The support plate 43 is triangular and right-angled. When the paving layer 3 is pressed against the side plate 41, the support plate 43 on the side plate 41 pushes against the ground, providing support for the side plate 41 and ensuring that the side plate 41 remains upright, always providing support for the paving layer 3.

[0019] Furthermore, two or more drainage channels 51 are provided on the pavement layer 3, and a drainage pipe 52 is connected to the top of the drainage channel 51, extending to the outside of the pavement layer 3. When it rains or there is water accumulation on the road surface, the water flows into the drainage channel 51 and is then discharged to the outside of the pavement layer 3 through the drainage pipe 52, thus removing the liquid from the surface of the pavement layer 3 and preventing vehicles or pedestrians from being splashed with water while walking.

[0020] Furthermore, the drainage trough 51 is equipped with an anti-clogging component, which includes a sieve plate 53, a drive rod 63, a lever 71, a support rod, a spring 64, and a unblocking plate 56. The sieve plate 53 is located at the top of the drainage trough 51, and a drive channel 61 is provided on one side of the drainage trough 51. The drive channel 61 is connected to the drainage trough 51 through a connecting channel 55. The support rod is fixed in the connecting channel 55, the lever 71 is rotatably connected to the support rod, and the drive rod 63 is inserted into the drive channel 61. The bottom of the drive channel 61 is provided with... A slot 62 is provided, and a spring 64 is set in the slot 62. The bottom of the drive rod 63 is connected to the spring 64. One end of the lever 71 is rotatably connected to the drive rod 63, and the other end of the lever 71 extends into the drainage groove 51. The unblocking plate 56 is slidably connected to the drainage groove 51. The unblocking plate 56 is provided with two or more insert rods 57, which are inserted into and cooperate with the sieve plate 53. The bottom of the unblocking plate 56 is provided with a slide rail 72, and a slider 73 is slidably connected to the slide rail 72. The other end of the lever 71 is rotatably connected to the slider 73.

[0021] To prevent external debris from clogging the drainage channel 51 and affecting the drainage effect, anti-clogging components are installed on the drainage channel 51. When a vehicle drives over the pavement layer 3, the vehicle's wheel runs over the drive rod 63, causing the drive rod 63 to move downward and compress the spring 64. Simultaneously, the drive rod 63 drives the left end of the lever 71 to move downward and the right end to move upward. During the upward movement of the right end of the lever 71, it drives the unblocking plate 56 to move upward. During the upward movement of the unblocking plate 56, the insertion rod 57 on it inserts into the screen plate 53, lifting up the debris clogging the screen plate 53 and the debris blocking the screen plate 53. Through the repeated passing of vehicles and the crushing of the drive rod 63, the insertion rod 57 can move back and forth repeatedly, and the repeated insertion and insertion pushes the debris on the screen out. The pushed-out debris will be carried away by the airflow caused by the passing vehicles or by the water flow on the road surface. At the same time, the drainage channel 51 is usually set on the side of the road, while the drive rod 63 can be extended to the center of the road so that the tires of passing cars can run over the drive rod 63. When sanitation workers are cleaning the road, they can also use their feet to step on the drive rod 63 to lift the debris on the screen plate 53, making it easier to clean. A cover 65 is installed on the pavement layer 3 to block the top of the drive rod 63 and prevent the sharp end of the drive rod 63 from damaging the vehicle's tires.

[0022] Furthermore, the anti-clogging component also includes a sleeve 74 and a locking hook 75. A locking groove 54 is provided at the bottom of the sieve plate 53. The sleeve 74 is fitted onto the lever 71, and the locking hook 75 is connected to the sleeve 74 and inserted into the locking groove 54. The locking hook 75, inserted into the locking groove 54 of the sieve plate 53, prevents the sieve plate 53 from shifting during daily use. Simultaneously, the locking groove 54 also limits the position of the locking hook 75, preventing the unblocking plate 56 from shifting during the upward movement of the unblocking plate 56 by the lever 71.

[0023] Furthermore, a flexible cylinder 22 is sleeved on the outside of the support member 21, and a disc 23 is fixed to the top of the support member 21. The flexible cylinder 22 and the disc 23 can increase the contact between the support rod and the pavement layer 3, so that the steel bridge deck 1 and the pavement layer 3 form an integral bridge deck structure under stress. This increases the frictional resistance of the pavement layer 3 in the longitudinal and transverse directions, disperses the concentrated stress of vehicle wheel loads, reduces the longitudinal and transverse horizontal deformation of the maximum strain zone, improves the shear resistance of the pavement structure, and ensures that the asphalt pavement layer 3 does not shift horizontally.

[0024] Furthermore, the pavement layer 3 is filled with polyurethane concrete, which is composed of 1 part polyurethane A, 1 part polyurethane B, 0.01 part retarder, 0.15 part desiccant, 2 parts silicate cement, 1.92 parts 4.75mm basalt, and 1.08 parts 2.36mm basalt. The above describes the types and proportions of novel polyurethane concrete composite materials suitable for production practice, successfully obtained through extensive experimentation, screening, and analysis.

[0025] Other techniques in this embodiment are based on existing technologies.

[0026] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms, characterized in that: It includes a steel bridge deck (1), support members (21) and a pavement layer (3). Two or more support members (21) are fixed on the steel bridge deck (1), the pavement layer (3) is laid on the steel bridge deck (1), and reinforcement members are also provided on the steel bridge deck (1).

2. The polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms according to claim 1, characterized in that: The reinforcing member includes a side plate (41) and an end plate (47). A pull plate (46) is provided on the side of the side plate (41). The pull plate (46) is embedded in the pavement layer (3). The pull plate (46) is inclined upward from the side plate (41). End plates (47) are provided at both ends of the side plate (41), and connecting rods (48) are provided on the end plates (47). The connecting rods (48) are connected to the inner side of the side plate (41).

3. The polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms according to claim 2, characterized in that: The reinforcing member also includes a support plate (43), which is a triangular plate. A locking block (44) is fixed on one side of the support plate (43). The outer side of the side plate (41) and the outer side of the end plate (47) are both provided with a slot (42). The support plate (43) is inserted into the slot (42) through the locking block (44). The bottom of the support plate (43) is provided with a base (45) for increasing the contact area.

4. The polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms according to claim 1, characterized in that: Two or more drainage channels (51) are provided on the pavement layer (3), and a drainage pipe (52) is connected to the top of the drainage channel (51), and the drainage pipe (52) extends to the outside of the pavement layer (3).

5. The polyurethane concrete steel bridge deck pavement structure with integrated adaptive drainage and anti-clogging mechanism according to claim 4, characterized in that: The drainage channel (51) is provided with anti-clogging components, including a sieve plate (53), a drive rod (63), a lever (71), a support rod, a spring (64), and a dredging plate (56). The sieve plate (53) is disposed on top of the drainage trough (51). A drive channel (61) is provided on one side of the drainage trough (51). The drive channel (61) is connected to the drainage trough (51) through a connecting channel (55). The support rod is fixed in the connecting channel (55). The lever (71) is rotatably connected to the support rod. The drive rod (63) is inserted into the drive channel (61). A slot (62) is provided at the bottom of the drive channel (61). A spring (64) is set in the slot (62). The bottom of the drive rod (63) is connected to the spring (64). One end of the lever (71) is rotatably connected to the drive rod (63). The other end of the lever (71) extends into the drainage trough (51). The unblocking plate (56) is slidably connected to the drainage trough (51). Two or more insert rods (57) are provided on the unblocking plate (56). The insert rods (57) are inserted into the sieve plate (53). The bottom of the drain plate (56) is provided with a slide rail (72), and a slider (73) is slidably connected on the slide rail (72). The other end of the lever (71) is rotatably connected to the slider (73).

6. The polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms according to claim 5, characterized in that: The anti-blocking component also includes a sleeve (74) and a locking hook (75). The bottom of the sieve plate (53) is provided with a locking groove (54). The sleeve (74) is sleeved on the lever (71), and the locking hook (75) is connected to the sleeve (74). The locking hook (75) is inserted into the locking groove (54).

7. The polyurethane concrete steel bridge deck pavement structure integrating adaptive drainage and anti-clogging mechanisms according to claim 1, characterized in that: The support member (21) is fitted with a flexible cylinder (22), and a disc (23) is fixed to the top of the support member (21).

8. The polyurethane concrete steel bridge deck pavement structure with integrated adaptive drainage and anti-clogging mechanism according to claim 1, characterized in that: The paving layer (3) is filled with polyurethane concrete, which is made by mixing 1 part polyurethane A, 1 part polyurethane B, 0.01 part retarder, 0.15 part dehumidifier, 2 parts silicate cement, 1.92 parts 4.75mm basalt and 1.08 parts 2.36mm basalt.

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