Paving method for bridge deck construction

Abstract

The application relates to the technical field of road and bridge drainage, and discloses a paving method for bridge deck construction, which comprises the following steps: manufacturing bridge deck bodies in advance, rough milling the bridge deck paving layer, and dividing the bridge deck paving layer into paving areas and installation areas; assembling a water collecting chamber on the installation area, and paving a waterproof layer, a mixed material surface layer and an asphalt concrete layer in the paving areas in sequence; butting one end of the water collecting chamber of two adjacent bridge deck bodies, carrying out bridge deck body assembly construction, and forming a expansion joint structure between the two adjacent bridge deck bodies; installing a water collecting groove corresponding to the bottom of the water collecting chamber in the expansion joint structure, and connecting the bottom of the water collecting groove with a bridge drop pipe through a drainage pipeline. In the application, the expansion joint does not need to be transformed, the flatness of the bridge deck is ensured, the bridge deck body has better drainage performance, the drainage effect of the bridge deck body is optimized, water accumulation is avoided to erode the bridge deck body, the durability of the bridge deck body is improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge and road drainage, for example to a paving method for bridge deck construction. BACKGROUND

[0002] The asphalt concrete and cement concrete composite bridge deck is a bridge deck paving structure frequently used in highways and urban roads, and the bridge deck superstructure is formed by prestressed reinforced cement concrete beam plates, integrally cast cement concrete bridge deck paving, and asphalt concrete paving.

[0003] At present, the integrally cast cement concrete bridge deck paving cannot be made absolutely flat, and there is a small pit unevenness, and the asphalt concrete pavement structure design has a certain void ratio. In a rainy or humid state, water will accumulate in the pit, and there is no drainage layer and drainage structure between the integrally cast cement concrete bridge deck paving and the asphalt concrete paving layer. The water in the pit will be retained for a long time, and the water will seep into the interior of the bridge deck, erode the bridge body, cause early water damage to the bridge deck, reduce the service life of the bridge, and increase the operation and maintenance cost of the bridge.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The water in the bridge deck cannot be effectively drained, which can easily cause damage to the bridge deck, reduce the durability of the bridge deck, and increase the operation and maintenance cost of the bridge.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a paving method for bridge deck construction, which does not need to modify the expansion joint, is easier to construct, ensures the flatness of the bridge deck, and at the same time makes the bridge deck body have better drainage performance, optimizes the drainage effect of the bridge deck body, avoids water erosion of the bridge deck body, improves the durability of the bridge deck body, and helps to reduce maintenance costs.

[0009] In some embodiments, the paving method for bridge deck construction comprises:

[0010] The bridge deck body is manufactured in advance, the bridge deck paving layer is rough-milled, and the bridge deck paving layer is divided into a paving area and an installation area.

[0011] Assembling the water collecting chamber on the installation area, and sequentially paving the waterproof layer, the mixture surface layer and the asphalt concrete layer in the paving area;

[0012] Butt-jointing the two adjacent bridge deck bodies with the water collecting chamber at one end, carrying out the bridge deck body assembling construction, and forming the expansion joint structure between the two adjacent bridge deck bodies;

[0013] Installing the water collecting groove corresponding to the bottom of the water collecting chamber in the expansion joint structure, and connecting the bottom of the water collecting groove with the bridge downspout by the drainage pipeline.

[0014] The paving method for bridge deck construction provided by the embodiments of the present disclosure can achieve the following technical effects:

[0015] By pre-manufacturing the bridge deck body and assembling the water collecting chamber on the installation area, sequentially paving the waterproof layer, the mixture surface layer and the asphalt concrete layer in the paving area, and then butt-jointing the bridge deck bodies, the height of each layer paved in the paving area can be the same as that of the water collecting chamber, so that the expansion joint does not need to be modified, the construction is easier, the flatness of the bridge deck is ensured, the bridge deck body has better drainage performance, the drainage effect of the bridge deck body is optimized, water accumulation is avoided to erode the bridge deck body, the durability of the bridge deck body is improved, and the maintenance cost is reduced.

[0016] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by the corresponding drawings, which do not constitute limitation on the embodiments, the elements with the same reference numerals in the drawings are shown as the similar elements, the drawings do not constitute proportional limitation, and wherein:

[0018] Figure 1 is a schematic diagram of a paving method for bridge deck construction provided by the embodiments of the present disclosure;

[0019] Figure 2 is a schematic diagram of another paving method for bridge deck construction provided by the embodiments of the present disclosure;

[0020] Figure 3 is a structural schematic diagram of a paving structure for bridge deck construction provided by the embodiments of the present disclosure;

[0021] Figure 4 is a structural schematic diagram of a mixture surface layer provided by the embodiments of the present disclosure;

[0022] Figure 5 is a structural schematic diagram of an asphalt concrete layer provided by the embodiments of the present disclosure;

[0023] Figure 6 This is a schematic diagram of another pavement structure for bridge deck construction provided in this embodiment of the disclosure;

[0024] Figure 7 yes Figure 6 Enlarged view of part A in the image.

[0025] Figure label:

[0026] 100. Expansion joint structure; 101. Waterstop; 200. Bridge deck structure; 201. Bridge deck pavement layer; 202. Waterproof layer; 203. Mixed material surface layer; 204. Asphalt concrete layer; 205. Coarse-grained crushed stone; 206. Fine-grained crushed stone; 207. Modified asphalt; 208. Top layer; 209. Middle layer; 210. Bottom layer; 300. Drainage structure; 301. Water collection chamber; 302. Water collection trough; 303. Drainage pipe; 304. Bridge downpipe; 305. Mesh seepage holes; 306. Guide plate; 307. V-shaped opening; 308. Filter screen. Detailed Implementation

[0027] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0028] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0029] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0030] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0031] Unless otherwise stated, the term "multiple" means two or more.

[0032] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0033] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0035] Combination Figures 1-2 As shown in the figure, this disclosure provides a paving method for bridge deck construction, including:

[0036] S01, prefabricate the bridge deck, rough mill the bridge deck pavement layer, and divide the bridge deck pavement layer into a pavement area and an installation area;

[0037] S02, the water collection chamber is assembled on the installation area, and the waterproof layer, the mixed material surface layer and the asphalt concrete layer are laid in sequence in the paving area;

[0038] S03, connect the ends of two adjacent bridge decks with water collection chambers, perform bridge deck assembly construction, and form an expansion joint structure between the two adjacent bridge decks;

[0039] S04, Install a water collection trough corresponding to the bottom of the water collection chamber inside the expansion joint structure, and connect the bottom of the water collection trough to the bridge downpipe using a drainage pipe.

[0040] The paving method for bridge deck construction provided in this disclosure involves pre-manufacturing the bridge deck and assembling the water collection chamber on the installation area. A waterproof layer, a mixed material surface layer, and an asphalt concrete layer are then sequentially laid within the paving area, followed by the assembly of the bridge deck. This ensures that each layer laid within the paving area is at the same height as the water collection chamber, eliminating the need to modify expansion joints, simplifying construction, ensuring the flatness of the bridge deck, and providing better drainage performance. This optimizes the drainage effect of the bridge deck, prevents water accumulation from eroding the bridge deck, improves the durability of the bridge deck, and helps reduce maintenance costs.

[0041] Optionally, dividing the bridge deck pavement layer into a pavement area and an installation area includes dividing the pavement layer along its length into a pavement area and an installation area with an area ratio of 10:1. This allows the installation area for assembling the drainage chamber to occupy a smaller area, enabling the bridge deck to have better drainage performance while reducing the impact of the drainage chamber on the overall bridge deck structure.

[0042] Optionally, after assembling the water collection chamber on the installation area and sequentially laying the waterproof layer, the mixture surface layer, and the asphalt concrete layer within the paving area, the method further includes: S05, compacting the waterproof layer, the mixture surface layer, and the asphalt concrete layer laid on the paving area, and performing elevation checks to ensure that the sum of the thicknesses of the waterproof layer, the mixture surface layer, and the asphalt concrete layer is the same as the height of the water collection chamber. This ensures that each layer laid within the paving area is at the same height as the water collection chamber, guaranteeing the flatness of the bridge deck, improving vehicle driving comfort, and enabling the water collection chamber to effectively collect accumulated water and pore water from the mixture surface layer and the asphalt concrete layer, thus giving the bridge deck structure better drainage performance.

[0043] Optionally, after prefabricating the bridge deck, rough milling the bridge deck pavement layer, and dividing the bridge deck pavement layer into paving areas and installation areas, the process also includes: S06, cleaning the surface of the bridge deck pavement layer of dust and debris. This avoids dust and debris affecting the paving quality and ensures the paving quality of the bridge deck.

[0044] Optionally, after cleaning the surface of the bridge deck pavement, the following steps are taken: measuring the flatness of the bridge deck pavement surface. This will make the surface of the paved bridge deck smoother.

[0045] Optionally, the water collection chamber is assembled on the installation area, and a waterproof layer, a mixed surface layer, and an asphalt concrete layer are sequentially laid within the paving area, including: first, laying the waterproof layer by spraying a waterproof and adhesive coating on the paving area using a mechanically assisted manual method. Spraying is stopped when the thickness of the waterproof layer is within 1-2 cm, and quality inspection is carried out; second, a mixed surface layer is laid on the waterproof layer, using single-grade limestone crushed stone with a particle size of 5-10 mm, followed by crushed stone with a particle size of less than 5 mm. The process begins with laying single-grained limestone crushed stone, followed by pre-coating and hot spraying with SBS modified asphalt. A rubber-tired roller is then used to compact and shape the stone, ensuring the crushed stone adheres tightly without overlapping to form a mixed surface layer. The thickness of this mixed surface layer is controlled within the range of 4-7 cm. Finally, a large-void permeable cement concrete lower layer, a medium-grained permeable asphalt concrete intermediate layer, and a fine-grained permeable asphalt concrete upper layer are sequentially laid on top of the mixed surface layer to form an asphalt concrete pavement. The sum of the thicknesses of these three layers is controlled within the range of 8-15 cm. In this way, spraying a 1-2cm layer of waterproof coating can give the waterproof layer better waterproof, seepage-proof, and protective performance, improving waterproofing performance. Furthermore, the spraying method of applying waterproof coating is more convenient and faster, improving paving efficiency. The combination of coarse-grained crushed stone, fine-grained crushed stone, and modified asphalt gives the mixed surface layer excellent permeability, optimizing the bridge's drainage effect. It can effectively drain water accumulated between the layers of the bridge deck structure and pore water, preventing water accumulation on the bridge surface during rainy days, thus preventing water erosion of the bridge structure and ensuring bridge safety. After paving, it also ensures the smoothness of the bridge surface, reducing vehicle vibration and noise, and allows the mixed surface layer to work well with the upper asphalt concrete layer (the two layers have gaps...). The different porosities of the three layers reduce cavity resonance, further reducing noise and ensuring the comfort of vehicles driving on the bridge. This allows the upper layer to have a smaller porosity, preventing larger particles of pollutants from falling into the bridge structure. Smaller particles of pollutants can also be carried out by the pumping action of the tires of high-speed vehicles. The smaller particle size of the upper layer can also provide better flatness, reducing vehicle vibration and noise. The different porosities between the three layers can reduce cavity resonance, thereby further reducing noise. At the same time, compared with the currently used single-layer pavement, it can slow down the decay of the water permeability of the bridge structure, improve the ability of the bridge surface to not accumulate water in rainy weather, and ensure the durability of the bridge structure. It can be used for pavement of various types of bridges.

[0046] It is worth noting that the above-mentioned bridge deck paving construction technical indicators are all determined and constructed in accordance with the requirements of the "Technical Specifications for Construction of Highway Asphalt Pavement". In addition, during paving, the bridge deck paving layer can be rough milled first, and expansion joint structures can be chiseled on the bridge deck paving layer; then, the cement concrete surface layer on both sides of the expansion joint structure can be removed along the longitudinal direction of the bridge deck paving layer to form a paving area with a thickness of 16-30cm; then, the water collection chamber is assembled on the side of the paving area close to the expansion joint structure; finally, the waterproof layer, the mixed surface layer and the asphalt concrete layer are laid in sequence in the paving area and compacted. The above method adopts the method of pre-building the bridge deck body. After the erection is completed, the bridge deck body structure is modified, that is, the paving construction and drainage construction are carried out.

[0047] Optionally, after assembling the water collection chamber on the installation area and sequentially laying the waterproof layer, the asphalt mixture surface layer, and the asphalt concrete layer within the paving area, the method further includes: creating a mesh of permeable holes in the water collection chamber at locations corresponding to the asphalt mixture surface layer and the asphalt concrete layer. This allows water accumulated in the asphalt mixture surface layer and the asphalt concrete layer to flow into the water collection chamber through the mesh of permeable holes, achieving the purpose of collecting and draining water from these layers. This effectively removes accumulated water and pore water from the asphalt mixture surface layer and the asphalt concrete layer, effectively drying the bridge deck, preventing water erosion of the bridge structure, avoiding early water damage to the bridge deck, and improving the durability of the bridge structure.

[0048] Optionally, while providing mesh-like seepage holes at the locations corresponding to the asphalt concrete and asphalt mixture layers in the water collection chamber, a downward-sloping guide plate is installed at the upper edge of the mesh-like seepage holes within the water collection chamber. This prevents water entering the water collection chamber from the bridge deck from flowing into the asphalt concrete or mixture layer through the mesh-like seepage holes, ensuring that accumulated water flows smoothly downwards and ultimately enters the water collection trough. This effectively prevents leakage from the water collection chamber and improves the stability and efficiency of the drainage process.

[0049] Optionally, after assembling the water collection chamber on the installation area and sequentially laying the waterproof layer, the mixture surface layer, and the asphalt concrete layer within the paving area, the method further includes applying a hydrophobic coating to the inner wall of the water collection chamber. This prevents water accumulation on the inner wall of the water collection chamber, allowing for more thorough drainage.

[0050] Optionally, the water collection chamber is installed on the installation area, and while the waterproof layer, the mixed surface layer, and the asphalt concrete layer are laid sequentially in the paving area, a filter screen is installed in the V-shaped opening of the water collection chamber. This allows rainwater on the bridge deck to flow into the water collection chamber, achieving rapid drainage of water from the bridge surface and preventing large amounts of rainwater from seeping into the bridge deck structure and causing damage. The filter screen also filters out mud and impurities from the rainwater, preventing blockage of the water collection chamber.

[0051] Combination Figures 3-5 As shown, this disclosure provides a pavement structure for bridge deck construction, wherein an expansion joint structure 100 is provided on the bridge deck, and a waterstop 101 is provided within the expansion joint structure 100. The structure is characterized by comprising: a bridge deck body structure 200 and a drainage structure 300. The bridge deck body structure 200 includes a bridge deck pavement layer 201, a waterproof layer 202, a mixed material surface layer 203, and an asphalt concrete layer 204. The waterproof layer 202, the mixed material surface layer 203, and the asphalt concrete layer 204 are sequentially laid on the bridge deck pavement layer 201, wherein the mixed material surface layer 203 is used for drainage, drying, and interlayer bonding. The drainage structure 300 includes a water collection chamber 301, a water collection trough 302, and a drainage pipe 303. The water collection chamber 301 is disposed between the expansion joint structure 100 and the bridge deck body structure 200, and collects water from the water in the water collection trough. The bottom of the water chamber 301 is connected to the expansion joint structure 100. The water collection chamber 301 is connected to the mixed material surface layer 203 and the asphalt concrete layer 204. The water collection trough 302 is set inside the expansion joint structure 100 and is located below the waterstop 101. The connection between the water collection chamber 301 and the expansion joint structure 100 is located between the water collection trough 302 and the waterstop 101. One end of the drainage pipe 303 is connected to the bottom of the water collection trough 302, and the other end is connected to the bridge downpipe 304.

[0052] The pavement structure for bridge deck construction provided in this embodiment allows for the collection of water in the mixed material surface layer 203 and asphalt concrete layer 204. This is achieved by installing a water collection chamber 301 between the expansion joint structure 100 and the bridge deck structure 200, which is connected to both the mixed material surface layer 203 and the asphalt concrete layer 204. Simultaneously, the collected water in the water collection chamber 301 flows into the water collection trough 302 and, together with the water in the expansion joint structure 100, is discharged to the outside through the drainage pipe 303. This effectively drains water accumulated between the layers of the bridge deck structure 200, as well as water from the gaps and expansion joints 100, thus effectively drying the bridge deck, preventing water erosion, avoiding early water damage, improving the bridge's durability, and saving maintenance costs. Furthermore, the drainage structure makes reasonable use of the space at the bridge deck expansion joints, eliminating the need to bury drainage pipes within the bridge deck. This reduces the impact of drainage pipes on the bridge deck paving and avoids situations where burying drainage pipes inside the bridge deck affects the overall structural stability of the bridge deck. Therefore, the bridge deck can have excellent drainage performance without affecting its overall structure.

[0053] Optionally, the water collection chamber 301 has a rectangular structure with a V-shaped opening 307 at its top that connects to the outside, and a filter screen 308 is installed inside the V-shaped opening 307. This allows rainwater on the bridge deck to flow into the water collection chamber 301, achieving rapid drainage of water from the bridge surface and preventing large amounts of rainwater from seeping into the bridge deck structure 200 and causing damage. The filter screen 308 filters out mud and impurities from the rainwater, preventing blockage of the water collection chamber 301.

[0054] It is worth noting that in order to reduce the impact of the water collection chamber 301 on the bridge deck structure 200, the top of the water collection chamber 301 can also be a closed structure.

[0055] Optionally, the water collection chamber 301 is attached to one side of the expansion joint structure 100, and the bottom of the water collection chamber 301 corresponds to the water collection trough 302. The bottom of the water collection chamber 301 forms a downward-sloping surface, and the lower end of the slope corresponds to one side of the water collection trough 302. This ensures a tighter connection between the water collection chamber 301 and the expansion joint structure 100, preventing rainwater or accumulated water from entering due to gaps. Simultaneously, the water collected in the water collection chamber 301 can smoothly converge into the water collection trough 302, effectively draining accumulated water and void water between the layers of the bridge deck structure 200.

[0056] Optionally, the horizontal width of the water collection chamber 301 is greater than or equal to 5cm and less than or equal to 10cm. This ensures that the horizontal width of the water collection chamber 301 is within a reasonable range, reducing the impact of the water collection chamber 301 on the bridge deck structure 200 while ensuring effective drainage, thus guaranteeing the flatness of the bridge deck structure 200 and enhancing the comfort and safety of vehicle travel.

[0057] Optionally, the waterstop 101 has a mesh-like structure with multiple through holes evenly distributed on it. This allows water to seep into the expansion joint mechanism from the bridge surface, through the through holes in the waterstop 101 and into the water collection trough 302. The drainage pipe 303 can then drain the accumulated water from the water collection trough 302, preventing damage to the expansion joint structure 100 due to prolonged water retention.

[0058] like Figure 4As shown, optionally, the mixed surface layer 203 is formed of coarse-grained crushed stone 205, fine-grained crushed stone 206, and modified asphalt 207. This combination of coarse-grained crushed stone 205, fine-grained crushed stone 206, and modified asphalt 207 gives the mixed surface layer 203 better permeability, optimizing the bridge's drainage effect. It effectively drains water accumulated between layers and in the voids of the bridge deck structure 200, preventing water accumulation on the bridge deck during rainy days, thus preventing water erosion of the bridge structure and ensuring bridge safety. Furthermore, after paving, it ensures the smoothness of the bridge deck, reducing vehicle vibration and noise. Simultaneously, the mixed surface layer 203, in conjunction with the upper asphalt concrete layer 204, has different porosities between the two layers, reducing cavity resonance and further lowering noise, ensuring vehicle comfort on the bridge deck.

[0059] Optionally, the coarse-grained crushed stone 205 is selected from single-sized limestone crushed stone with a particle size of 5-10mm, and the fine-grained crushed stone 206 is selected from single-sized limestone crushed stone with a particle size of less than 5mm. This ensures the smoothness of the mixed surface layer 203, guarantees the paving quality of the bridge deck, and also gives the mixed surface layer 203 better permeability, thus optimizing the drainage effect of the bridge structure.

[0060] Optionally, the modified asphalt 207 is SBS modified asphalt 207, wherein the SBS content is greater than or equal to 4% and less than or equal to 6%. This keeps the SBS content within a reasonable range, making better use of the good physical properties of SBS to modify the asphalt, which helps to enhance the stability of the bridge structure.

[0061] Optionally, the waterproof layer 202 can be made of waterproof coating or waterproof membrane. Both waterproof coating and waterproof membrane possess excellent waterproof, seepage-proof, and protective properties, and can be used for bridge deck waterproofing. When constructing the waterproof layer 202, the choice between waterproof coating or waterproof membrane can be made according to construction requirements. Waterproof coating is an amorphous material, suitable for substrates of various shapes, forming a seamless, integral waterproof layer 202. It can be sprayed, making construction convenient and efficient. Waterproof membrane, on the other hand, has good water resistance and stability to temperature changes; it does not flow, bubble, or move at high temperatures, nor does it become brittle at low temperatures. It also possesses good mechanical strength, elongation, and fracture resistance.

[0062] Understandably, both waterproof coatings and waterproof membranes are existing technologies. The types of waterproof coatings and waterproof membranes used can be selected according to construction needs. For example, SBS polymer-modified emulsified bitumen waterproof coatings can be used as waterproof coatings, and self-adhesive polymer-modified bitumen 207 waterproof membranes can be used as waterproof membranes. At the same time, the technology of using waterproof coatings and waterproof membranes for waterproofing is relatively mature and will not be elaborated here. In addition, this application preferably uses waterproof coatings as waterproof layer 202.

[0063] like Figure 5 As shown, optionally, the asphalt concrete layer 204 includes a top layer 208, a middle layer 209, and a bottom layer 210, wherein the top layer 208, the middle layer 209, and the bottom layer 210 are respectively fine-grained permeable asphalt concrete, medium-grained permeable asphalt concrete, and large-void permeable cement concrete layers. This allows the top layer 208 to have a smaller porosity, preventing larger particles from falling into the asphalt concrete layer 204, while smaller particles can be carried out by the suction effect of high-speed vehicle tires. The smaller particle size of the top layer 208 also provides better smoothness, reducing vehicle vibration noise. The different porosities among the three layers reduce cavity resonance, further reducing noise. Compared to the currently used single-layer pavement, this method slows down the decay of the permeability of the asphalt concrete layer 204, improves the bridge surface's ability to prevent water accumulation in rainy weather, and ensures the durability of the bridge structure. It can be used for pavement of various types of bridges.

[0064] Optionally, the upper layer 208 covers the expansion joint structure 100, and the portion of the upper layer 208 corresponding to the expansion joint structure 100 has an upwardly convex arc shape. In this way, the expansion joint structure 100 can be sealed, enhancing its protection, while the arc shape facilitates the convergence of rainwater into the drainage chamber, improving drainage efficiency.

[0065] Optionally, the height of the water collection chamber 301 is less than the height of the bridge deck structure 200. This makes the installation of the water collection chamber 301 more rational, helps to reduce the impact of the water collection chamber 301 on the bridge deck structure 200, and ensures that the bridge deck structure 200 has better drainage performance while maintaining its stability.

[0066] Optionally, the height of the water collection chamber 301 is equal to the sum of the thicknesses of the mixture surface layer 203 and the asphalt concrete layer 204. This ensures that the height of the water collection chamber 301 is within a reasonable range, effectively collecting accumulated water and void water from the mixture surface layer 203 and the asphalt concrete layer 204.

[0067] like Figures 6-7 As shown, optionally, the water collection chamber 301 is provided with mesh-like seepage holes 305 at the positions corresponding to the mixture surface layer 203 and the asphalt concrete layer 204. This allows water accumulated in the mixture surface layer 203 and the asphalt concrete layer 204 to flow into the water collection chamber 301 through the mesh-like seepage holes 305, achieving the purpose of collecting and draining water from these layers. This effectively removes accumulated water and pore water from the mixture surface layer 203 and the asphalt concrete layer 204, effectively drying the bridge deck, preventing water erosion of the bridge structure, avoiding early water damage to the bridge deck, and improving the durability of the bridge structure.

[0068] Optionally, a guide plate 306, inclined downwards and located within the water collection chamber 301, is provided on the upper edge of the mesh seepage holes 305. A predetermined gap exists between the guide plate 306 and the side wall of the water collection chamber 301 near the expansion joint structure 100. This prevents water entering the water collection chamber 301 from flowing through the mesh seepage holes 305 into the mixture surface layer 203 or asphalt concrete layer 204, ensuring that accumulated water flows smoothly downwards and ultimately into the water collection trough 302. This effectively prevents leakage from the water collection chamber 301 and improves the stability and efficiency of the drainage process.

[0069] Optionally, the water collection trough 302 is made of an elastic material, or the water collection trough 302 is connected to the inner wall of the expansion joint structure 100 via an elastic element. This allows the water collection trough 302 to have better elasticity or more flexible installation. When the expansion joint structure 100 expands or contracts, the water collection trough 302 can adjust its position accordingly, preventing the expansion joint structure 100 from shifting and affecting the water collection chamber 301's ability to collect water, thus ensuring the stability of the drainage process.

[0070] Understandably, the elastic material can be spring steel, rubber, or latex, and the elastic element can be a spring. Spring steel, rubber, latex, and springs are all existing technologies, and their specific structures and installation methods will not be described in detail here.

[0071] Optionally, the inner wall of the water collection chamber 301 is coated with a hydrophobic coating. This prevents water from accumulating on the inner wall of the water collection chamber 301, allowing for more thorough drainage.

[0072] It is worth noting that the water collection chamber 301 can be formed by manually excavating one side of the expansion joint structure 100 during the paving of the bridge deck, or by installing a hollow shell structure.

[0073] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A paving method for bridge deck construction, characterized in that, include: The bridge deck is prefabricated, the bridge deck pavement layer is rough milled, and the bridge deck pavement layer is divided into paving area and installation area; The water collection chamber is assembled on the installation area, and the waterproof layer, the mixed material surface layer and the asphalt concrete layer are laid in sequence in the paving area. The two adjacent bridge deck sections with water collection chambers are joined together at one end to assemble the bridge deck sections, and an expansion joint structure is formed between the two adjacent bridge deck sections. Install a water collection trough inside the expansion joint structure that corresponds to the bottom of the water collection chamber, and connect the bottom of the water collection trough to the bridge downpipe using a drainage pipe. The bridge deck pavement layer is divided into a pavement area and an installation area, including: The bridge deck pavement is divided into a pavement area and an installation area with an area ratio of 10:1 along its length. After assembling the water collection chamber on the installation area, and sequentially laying the waterproof layer, the mixed surface layer, and the asphalt concrete layer within the paving area, the process also includes: The waterproof layer, mixed surface layer and asphalt concrete layer laid on the paved area are rolled into shape and the elevation is checked to ensure that the sum of the thickness of the waterproof layer, mixed surface layer and asphalt concrete layer is the same as the height of the water collection chamber. After assembling the water collection chamber on the installation area, and sequentially laying the waterproof layer, the mixed surface layer, and the asphalt concrete layer within the paving area, the process also includes: A mesh of seepage holes is opened at the locations corresponding to the mixed material surface layer and the asphalt concrete layer in the water collection chamber; While a mesh-like permeable hole is provided at the location of the mixed material surface layer and the asphalt concrete layer in the water collection chamber, a guide plate that is located in the water collection chamber and tilts downward is provided at the upper edge of the mesh-like permeable hole.

2. The paving method for bridge deck construction according to claim 1, characterized in that, After prefabricating the bridge deck, rough milling the bridge deck pavement layer, and dividing the bridge deck pavement layer into pavement areas and installation areas, the process also includes: Clean the surface of the bridge deck pavement of dust and debris.

3. The paving method for bridge deck construction according to claim 2, characterized in that, After cleaning the surface of the bridge deck pavement, the following steps are taken: The surface flatness of the bridge deck pavement was measured.

4. The paving method for bridge deck construction according to claim 1, characterized in that, The water collection chamber is assembled on the installation area, and the waterproof layer, the mixed surface layer, and the asphalt concrete layer are laid sequentially in the paving area, including: First, the waterproof layer is laid. Using a mechanical-assisted manual method, a coating with waterproof and adhesive properties is sprayed on the paving area. Spraying is stopped when the thickness of the waterproof layer is within 1-2cm, and quality inspection is carried out. Secondly, a mixed material surface layer is laid on the waterproof layer. Single-grade limestone crushed stone with a particle size of 5-10mm is used for laying, followed by single-grade limestone crushed stone with a particle size of less than 5mm. Then, SBS modified asphalt is pre-coated and hot-sprayed. After that, a rubber-tired roller is used to closely follow and stabilize the compaction, so that the crushed stone is tightly attached without overlapping to form the mixed material surface layer. The thickness of the mixed material surface layer is controlled within the range of 4-7cm. Finally, on the mixed surface layer, a large-void permeable cement concrete lower layer, a medium-grained permeable asphalt concrete middle layer, and a fine-grained permeable asphalt concrete upper layer are laid in sequence to form an asphalt concrete pavement. The total thickness of the three layers is controlled within the range of 8-15cm.

5. The paving method for bridge deck construction according to claim 1, characterized in that, After assembling the water collection chamber on the installation area, and sequentially laying the waterproof layer, the mixed surface layer, and the asphalt concrete layer within the paving area, the process also includes: The inner wall of the water collection chamber is coated with a hydrophobic coating.

6. The paving method for bridge deck construction according to claim 1, characterized in that, The water collection chamber is assembled on the installation area, and while the waterproof layer, the mixed material surface layer and the asphalt concrete layer are laid in sequence in the paving area, a filter screen is installed in the V-shaped opening of the water collection chamber.

Images