Bridge deck ultra-high performance concrete pavement construction method

Abstract

The invention relates to the technical field of ultra-high performance concrete, and discloses a bridge deck ultra-high performance concrete pavement construction method which comprises the following construction steps: 1) performing rust removal treatment on the surface of a steel plate; (2) welding shear nails on the steel plate, wherein the shear nails are provided with middle sections to form bending joints; (3) a reinforcing mesh is arranged on the steel plate, the shear nails are fixedly connected with the reinforcing mesh, the middle section is arranged in the reinforcing mesh in a penetrating mode, and the reinforcing mesh applies extrusion force towards the bending joints to the dividing strips; 4) pouring ultra-high performance concrete on the steel plate to form a cloth layer, and covering the steel plate, the reinforcing mesh and the shear nails; (5) maintaining the cloth layer until the cloth layer is solidified; (6) the top of the cloth layer is subjected to sand blasting roughening, and a bonding layer is sprayed; 7) paving an asphalt material on the top surface to form an asphalt layer; through the construction steps and structural optimization, the quality and effect of paving the bridge deck ultra-high-performance concrete are improved, and the bridge deck ultra-high-performance concrete can better meet the high requirements of modern bridges.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of ultra-high performance concrete, specifically, to a construction method for ultra-high performance concrete paving of bridge decks. Background Art

[0002] In the technical field of ultra-high performance concrete, bridge deck paving is a crucial construction link, and its effect directly affects the service life, driving safety and comfort of the bridge. Therefore, improving the paving effect of ultra-high performance concrete on bridge decks is one of the difficulties that the industry has been working to overcome.

[0003] In the existing technology, during the bridge deck paving process, if the rust on the steel plate surface is not thoroughly removed, it will seriously affect the subsequent bonding performance between the concrete and the steel plate. When the bonding strength between the steel plate and the ultra-high performance concrete is insufficient, the concrete pavement layer is prone to hollowing and falling off, thereby reducing the durability and bearing capacity of the bridge deck.

[0004] On the other hand, in the prior art, the contact area between the shear nails and the concrete is generally small, resulting in limited bonding between the concrete and the shear nails during the solidification process, and the shear nails cannot fully exert their shear resistance. Under the repeated action of vehicle loads, the shear nails are easily loosened or pulled out, thereby affecting the structural stability of the entire pavement layer. In addition, the traditional shear nail arrangement method is less effective in resisting concrete shrinkage stress and temperature stress, and is prone to cause cracks in the pavement layer.

[0005] In existing paving methods, the steel mesh is usually simply laid on the steel plate or inside the concrete, and the connection between the steel mesh and the shear nails is not tight enough. In this way, the steel mesh cannot form a good collaborative working system with the shear nails, and it is difficult to effectively enhance the overall stiffness and crack resistance of the pavement layer. Moreover, due to the unreasonable spacing between the steel mesh and the steel plate, the concrete is unevenly distributed in this area, further affecting the quality and stress performance of the pavement layer.

[0006] In addition, in the treatment of the top surface of the concrete pavement layer, existing methods usually do not effectively roughen and bond the surface, resulting in weak bonding between the subsequently laid asphalt layer and the concrete layer. This can easily cause peeling and damage to the asphalt layer during vehicle driving, especially when braking and starting, affecting the overall performance of the bridge deck. Summary of the Invention

[0007] The purpose of the present invention is to provide a construction method for paving a bridge deck with ultra-high performance concrete, aiming to solve the problem of poor paving effect of ultra-high performance concrete on bridge decks in the prior art.

[0008] The present invention is implemented as follows: a bridge deck ultra-high performance concrete paving construction method includes the following construction steps:

[0009] 1) There is a steel plate on the bridge deck, and the surface of the steel plate is subjected to rust removal treatment;

[0010] 2) Welding a plurality of raised shear nails arranged in an array on the steel plate, wherein the bottom of the shear nail is fixed to the steel plate, and the top of the shear nail extends upward away from the steel plate. The middle portion of the shear nail has a middle section, and a curved seam arranged longitudinally and vacantly is formed in the middle section. The middle section has dividing strips located on both sides of the curved seam, and the two dividing strips are arranged opposite to each other and spaced apart to enclose the curved seam;

[0011] 3) Arranging a steel mesh on the steel plate, a plurality of shear nails passing through the steel mesh and fixedly connected to the steel mesh, the steel mesh being formed above the steel plate and forming a bottom spacer between the steel plate; the middle section is passed through the steel mesh, the steel mesh surrounds the outer periphery of the middle section, and applies an extrusion force to the partition strip toward the bending seam;

[0012] 4) pouring ultra-high performance concrete on the steel plate, wherein the ultra-high performance concrete forms a cloth layer on the steel plate, and the cloth layer covers the steel plate, steel mesh and shear nails;

[0013] 5) Curing the fabric layer until the fabric layer solidifies;

[0014] 6) The top of the fabric layer has a top surface, the top surface is sandblasted and roughened, and an adhesive layer is sprayed on the top surface;

[0015] 7) Asphalt is laid on the top surface, and the asphalt is bonded to the top surface through the bonding layer to form an asphalt layer.

[0016] Furthermore, in the construction step 1), sandblasting is performed on the surface of the steel plate to remove rust from the surface of the steel plate.

[0017] Furthermore, in the construction step 1), after the surface of the steel plate is subjected to rust removal treatment, an anti-corrosion agent is sprayed on the surface of the steel plate to form an anti-corrosion layer covering the surface of the steel plate.

[0018] Furthermore, in the construction step 2), a plurality of welding positions are first measured and arranged on the steel plate, and the plurality of welding positions are marked; after the anti-corrosion layer on the welding positions is removed, shear nails are welded and fixed on the welding positions.

[0019] Furthermore, in the construction step 3), the steel mesh has enclosing bars arranged in a circular shape, the enclosing bars enclose a longitudinally penetrating socket, the middle section is passed through the socket, the enclosing bars surround the outer circumference of the middle section, and press the middle section inward to apply an extrusion force to the dividing strip toward the bending seam.

[0020] Furthermore, in the construction step 3), a step groove is provided on the dividing strip, and the step groove is arranged away from the bending seam; the bottom of the step groove has a groove bottom, and the inner side of the step groove has a groove side, and the groove bottom is arranged upwardly inclined along the direction away from the bending seam; the enclosing rib is embedded in the step groove, abuts against the groove bottom, and presses against the groove side, applying an extrusion force to the groove side toward the bending seam.

[0021] Furthermore, in the construction step 3), a docking portion is formed in the middle of the dividing strip, and the bottom of the groove is arranged flush with the docking portion; the curved seam has two diagonal braces arranged obliquely toward each other, the bottom of the diagonal brace is docked at the bottom of the curved seam, and the top of the diagonal brace is docked at the docking portion.

[0022] Furthermore, in the construction step 3), the bottoms of the two diagonal braces are brought together and docked to form a gathering position; the bending seam has a bending bar, the bottom of the bending bar is docked at the gathering position, and the top of the bending bar is docked at the top of the bending seam.

[0023] Furthermore, in the construction step 5), a film layer is first covered on the fabric layer, and after curing the fabric layer for a set time, the film layer is removed and the fabric layer is cured with high-temperature steam until the fabric layer solidifies.

[0024] Furthermore, in the construction step 3), after the steel mesh is connected to the plurality of shear nails, the steel mesh has a plurality of suspended portions, the outer peripheries of the suspended portions are respectively connected to the plurality of shear nails; the suspended portions are arranged in a conical convex shape, and along the direction from the middle to the outer periphery of the suspended portions, the suspended portions are arranged downwardly inclined, and the middle of the suspended portions forms a conical convex portion;

[0025] In the construction step 4), during the process of pouring the ultra-high performance concrete on the steel plate, the delivery pipe is aligned with the conical convex portion from top to bottom, and the ultra-high performance concrete output by the delivery pipe impacts the conical convex portion from top to bottom, and is diffused and poured from the conical convex portion toward the surrounding areas of the external suspended portion until the distribution layer is formed on the steel plate.

[0026] Compared with the existing technology, the bridge deck ultra-high performance concrete paving construction method provided by the present invention has the following advantages:

[0027] 1) By removing the rust from the steel plate surface (step 1), a good foundation is provided for the subsequent bonding of concrete, ensuring the bonding strength between the steel plate and concrete and avoiding the problem of weak bonding caused by steel plate corrosion, which is an important prerequisite for improving the quality of paving;

[0028] 2) The curved seam and separator strip structure in the middle section of the shear stud not only improves the transverse shear resistance of the shear stud itself, but also further enhances the stability of the steel mesh through interaction with the steel mesh, thereby improving the stability and shear resistance of the fabric layer formed by the ultra-high performance concrete;

[0029] It is worth mentioning that the purpose of the shear nail structure in steps 3) and 4) is to improve the shear resistance of the fabric layer. Since a curved seam is formed in the middle section, the transverse shear resistance of the shear nail can be enhanced. In addition, the middle section passes through the steel mesh and is connected to the steel mesh as a whole, thereby improving the stability of the steel mesh and the fabric layer formed by ultra-high performance concrete, further strengthening the transverse shear resistance.

[0030] 3) Curing the fabric layer (step 5) ensures the quality and performance of the ultra-high performance concrete, allowing it to fully solidify and cure, and exert its expected high strength and durability. Sandblasting and roughening the top surface and spraying the bonding layer (step 6) provide a good bonding foundation for the laying of the asphalt layer, enhance the bond between the asphalt layer and the concrete layer, effectively prevent the asphalt layer from peeling and damage, and improve the overall performance and durability of the bridge deck pavement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the process of the bridge deck ultra-high performance concrete paving construction method provided by the present invention;

[0032] Figure 2 This is a schematic diagram of the cross-sectional structure of the shear stud provided by the present invention;

[0033] Figure 3 is a schematic cross-sectional view of the curved seam provided by the present invention;

[0034] Figure 4 It is a partial cross-sectional schematic diagram of the steel mesh provided by the present invention;

[0035] In the figure: steel plate 100, bottom spacer 101, suspended portion 102, conical convex portion 103;

[0036] Shear studs 200 , curved seams 201 , stepped grooves 202 , groove sides 203 , diagonal braces 204 , convergence points 205 , curved bars 206 , and groove bottoms 207 . DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0039] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] Reference Figure 1-4 The figure shows a preferred embodiment of the present invention.

[0041] The construction method of ultra-high performance concrete paving on bridge decks includes the following construction steps:

[0042] 1) There is a steel plate 100 on the bridge deck, and the surface of the steel plate 100 is subjected to rust removal treatment;

[0043] 2) Welding a plurality of raised shear nails 200 arranged in an array on the steel plate 100, wherein the bottom of the shear nail 200 is fixed to the steel plate 100, and the top of the shear nail 200 extends upward away from the steel plate 100. The middle portion of the shear nail 200 has a middle section, and a curved seam 201 arranged longitudinally and vacantly is formed in the middle section. The middle section has dividing strips located on both sides of the curved seam 201, and the two dividing strips are arranged opposite to each other and spaced apart to enclose the curved seam 201;

[0044] 3) A steel mesh is arranged on the steel plate 100, and a plurality of shear nails 200 pass through the steel mesh and are fixedly connected to the steel mesh. The steel mesh is formed above the steel plate 100, forming a bottom space 101 between the steel plate 100; the middle section is passed through the steel mesh, and the steel mesh surrounds the outer periphery of the middle section and applies an extrusion force to the partition strip toward the curved seam 201;

[0045] 4) pouring ultra-high performance concrete on the steel plate 100, the ultra-high performance concrete forms a cloth layer on the steel plate 100, and the cloth layer covers the steel plate 100, the steel mesh and the shear nails 200;

[0046] 5) Maintain the fabric layer until it solidifies;

[0047] 6) The top of the fabric layer has a top surface, the top surface is sandblasted and roughened, and a bonding layer is sprayed on the top surface;

[0048] 7) Asphalt is laid on the top surface. The asphalt is bonded to the top surface through the bonding layer to form an asphalt layer.

[0049] The above-mentioned bridge deck ultra-high performance concrete paving construction method has the following advantages:

[0050] 1) By performing rust removal treatment on the surface of the steel plate 100 (step 1), a good foundation is provided for the subsequent bonding of concrete, ensuring the bonding strength between the steel plate 100 and the concrete, and avoiding the problem of weak bonding caused by rust on the steel plate 100, which is an important prerequisite for improving the paving quality;

[0051] 2) The curved seam 201 and the separator strip structure in the middle section of the shear stud 200 not only improve the transverse shear resistance of the shear stud 200 itself, but also further enhance the stability of the steel mesh through interaction with the steel mesh, thereby improving the stability and shear resistance of the fabric layer formed by the ultra-high performance concrete;

[0052] It is worth mentioning that the structure of the shear studs 200 in steps 3) and 4) is intended to improve the shear resistance of the fabric layer. The curved seam 201 formed in the middle section enhances the transverse shear resistance of the shear studs 200. Furthermore, the middle section passes through the steel mesh and is integrally connected to the steel mesh, thereby improving the stability of the steel mesh and the fabric layer formed by the ultra-high performance concrete, further enhancing the transverse shear resistance.

[0053] 3) Curing the fabric layer (step 5) ensures the quality and performance of the ultra-high performance concrete, allowing it to fully solidify and cure, and exert its expected high strength and durability. Sandblasting and roughening the top surface and spraying the bonding layer (step 6) provide a good bonding foundation for the laying of the asphalt layer, enhance the bond between the asphalt layer and the concrete layer, effectively prevent the asphalt layer from peeling and damage, and improve the overall performance and durability of the bridge deck pavement.

[0054] In this embodiment, in construction step 1), sandblasting is performed on the surface of the steel plate 100 to remove rust from the surface of the steel plate 100 .

[0055] In this way, the surface of the steel plate 100 presents a metallic luster, which greatly improves the bonding performance between the steel plate 100 and the subsequently poured ultra-high performance concrete, avoids problems such as weak bonding and hollowing, and thus lays the foundation for the firmness of the entire pavement layer.

[0056] In this embodiment, in construction step 1), after the surface of the steel plate 100 is subjected to rust removal treatment, an anti-corrosion agent is sprayed on the surface of the steel plate 100 to form an anti-corrosion layer covering the surface of the steel plate 100 .

[0057] The anti-corrosion layer can effectively isolate the steel plate 100 from contact with moisture, oxygen and corrosive media in the external environment, preventing the steel plate 100 from rusting again during subsequent construction and use, thereby extending the service life of the steel plate 100 and ensuring the long-term structural stability and reliability of the bridge deck pavement layer.

[0058] In this embodiment, in construction step 2), a plurality of welding positions are first measured and arranged on the steel plate 100, and the plurality of welding positions are marked; after the anti-corrosion layer on the welding positions is removed, the shear studs 200 are welded and fixed on the welding positions.

[0059] By pre-measuring, arranging and marking the welding positions, the uniformity and accuracy of the distribution of the shear nails 200 on the steel plate 100 can be ensured, making the welding between the shear nails 200 and the steel plate 100 more firm and reliable. At the same time, removing the anti-corrosion layer on the welding position helps to ensure good electrical contact and welding quality between the shear nails 200 and the steel plate 100, improve the connection strength between the shear nails 200 and the steel plate 100, and thereby enhance the shear resistance of the entire pavement structure.

[0060] In this embodiment, in construction step 3), the steel mesh has enclosing bars arranged in a circular shape, the enclosing bars enclose a longitudinally penetrating insertion hole, the middle section is passed through the insertion hole, the enclosing bars surround the outer circumference of the middle section, and press the middle section inward to apply an extrusion force to the dividing strip toward the curved seam 201.

[0061] Through the pressing effect of the enclosing reinforcement on the middle section, the extrusion force can be effectively transmitted to the dividing strip, so that the dividing strip fits more closely on both sides of the bending seam 201, thereby enhancing the connection tightness between the shear nails 200 and the steel mesh, improving the anchoring effect of the steel mesh in the concrete, and further improving the shear resistance and integrity of the entire pavement layer.

[0062] In this embodiment, in construction step 3), a step groove 202 is provided on the dividing strip, and the step groove 202 is arranged away from the bending joint 201; the bottom of the step groove 202 has a groove bottom 207, and the inner side of the step groove 202 has a groove side 203, and the groove bottom 207 is arranged upwardly inclined along the direction away from the bending joint 201; the enclosing rib is embedded in the step groove 202, abuts against the groove bottom 207, and presses against the groove side 203, applying an extrusion force to the groove side 203 toward the bending joint 201.

[0063] Through the special structure of the groove bottom 207 and the groove side 203, the extrusion force of the enclosing reinforcement on the dividing strip can be effectively decomposed and transmitted, thereby enhancing the stability of the dividing strip in the curved joint 201 and improving the shear bearing capacity of the shear nail 200. At the same time, it is also beneficial to improve the bonding performance between the concrete and the shear nail 200, which has a positive effect on improving the bridge deck paving effect.

[0064] In this embodiment, in construction step 3), a docking portion is formed in the middle of the dividing strip, and the bottom 207 of the groove is arranged flush with the docking portion; the curved seam 201 has two diagonal braces 204 arranged obliquely toward each other, the bottom of the diagonal brace 204 docks at the bottom of the curved seam 201, and the top of the diagonal brace 204 docks at the docking portion.

[0065] By arranging the docking portion flush with the bottom 207 of the groove and setting the diagonal brace 204, a stable and reliable connection structure is formed between the dividing strip and the bottom of the curved seam 201. The inclined arrangement of the diagonal brace 204 can effectively disperse the shear force to the bottom of the dividing strip and the curved seam 201 when the shear nail 200 is subjected to shear force, thereby improving the overall shear strength and stability of the shear nail 200.

[0066] In this embodiment, in construction step 3), the bottoms of the two diagonal braces 204 are brought together and docked to form a gathering position 205; a bending strip 206 is provided in the bending joint 201, the bottom of the bending strip 206 is docked on the gathering position 205, and the top of the bending strip 206 is docked on the top of the bending joint 201.

[0067] In this way, when subjected to external force, the bending strip 206 can work together with the diagonal bracing strip 204 to jointly bear the shear force, thereby improving the overall shear resistance of the shear nail 200, while also enhancing the anchoring effect of the shear nail 200 in the concrete, further improving the quality and stability of the bridge deck pavement layer.

[0068] In this embodiment, in construction step 5), a film layer is first covered on the fabric layer. After curing the fabric layer for a set time, the film layer is removed and the fabric layer is cured with high-temperature steam until the fabric layer solidifies.

[0069] The covering film layer can effectively reduce the evaporation of water in the cloth layer during the initial curing stage, ensuring that the hydration reaction of the concrete can proceed in a relatively moist environment, thereby improving the early strength of the concrete;

[0070] Subsequent high-temperature steam curing can further accelerate the hydration reaction process of concrete, improve the later strength and durability of concrete, ensure that the performance of ultra-high performance concrete is fully utilized, and provide a solid foundation for the bridge deck pavement layer.

[0071] In this embodiment, in construction step 3), after the steel mesh is connected to the plurality of shear nails 200, the steel mesh has a plurality of suspended portions 102, and the outer peripheries of the suspended portions 102 are respectively connected to the plurality of shear nails 200; the suspended portions 102 are arranged in a conical convex shape, and along the direction from the middle portion to the outer periphery of the suspended portion 102, the suspended portion 102 is arranged downwardly inclined, and a conical convex portion 103 is formed in the middle portion of the suspended portion 102;

[0072] In construction step 4), during the pouring of ultra-high performance concrete on the steel plate 100, the feed pipe is aligned with the conical convex portion 103 from top to bottom, and the ultra-high performance concrete output by the feed pipe impacts the conical convex portion 103 from top to bottom, and is diffused and poured from the conical convex portion 103 toward the surrounding areas of the external suspended portion 102 until a material layer is formed on the steel plate 100.

[0073] In this way, when pouring concrete, the concrete can accurately impact the conical convex part 103 through the delivery pipe, and then spread evenly to the surroundings, effectively avoiding segregation, accumulation and unevenness of the concrete during the pouring process. At the same time, the structure of the conical convex part 103 and the suspended part 102 can guide the concrete to fully fill the space between the steel mesh and the steel plate 100, thereby improving the density of the concrete and the bond strength with the steel mesh, thereby ensuring the quality uniformity and structural stability of the bridge deck pavement layer.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The bridge deck ultra-high performance concrete paving construction method is characterized by: The construction steps include: 1) There is a steel plate on the bridge deck, and the surface of the steel plate is subjected to rust removal treatment; 2) Welding a plurality of raised shear nails arranged in an array on the steel plate, wherein the bottom of the shear nail is fixed to the steel plate, and the top of the shear nail extends upward away from the steel plate. The middle portion of the shear nail has a middle section, and a curved seam arranged longitudinally and vacantly is formed in the middle section. The middle section has dividing strips located on both sides of the curved seam, and the two dividing strips are arranged opposite to each other and spaced apart to enclose the curved seam; 3) Arranging a steel mesh on the steel plate, a plurality of shear nails passing through the steel mesh and fixedly connected to the steel mesh, the steel mesh being formed above the steel plate and forming a bottom spacer between the steel plate; the middle section is passed through the steel mesh, the steel mesh surrounds the outer periphery of the middle section, and applies an extrusion force to the partition strip toward the bending seam; 4) pouring ultra-high performance concrete on the steel plate, wherein the ultra-high performance concrete forms a cloth layer on the steel plate, and the cloth layer covers the steel plate, steel mesh and shear nails; 5) Curing the fabric layer until the fabric layer solidifies; 6) The top of the fabric layer has a top surface, the top surface is sandblasted and roughened, and an adhesive layer is sprayed on the top surface; 7) Asphalt is laid on the top surface, and the asphalt is bonded to the top surface through the bonding layer to form an asphalt layer.

2. The bridge deck ultra-high performance concrete paving construction method according to claim 1, characterized in that: In the construction step 1), sandblasting is performed on the surface of the steel plate to remove rust from the surface of the steel plate.

3. The bridge deck ultra-high performance concrete paving construction method according to claim 1, characterized in that: In the construction step 1), after the surface of the steel plate is subjected to rust removal treatment, an anti-corrosion agent is sprayed on the surface of the steel plate to form an anti-corrosion layer covering the surface of the steel plate.

4. The bridge deck ultra-high performance concrete paving construction method according to claim 1, characterized in that: In the construction step 2), a plurality of welding positions are first measured and arranged on the steel plate, and the plurality of welding positions are marked; after removing the anti-corrosion layer on the welding positions, shear studs are welded and fixed on the welding positions.

5. The bridge deck ultra-high performance concrete paving construction method according to any one of claims 1 to 4, characterized in that: In the construction step 3), the steel mesh has enclosing bars arranged in a circular shape, the enclosing bars enclose a longitudinally penetrating insertion hole, the middle section is passed through the insertion hole, the enclosing bars surround the outer circumference of the middle section, and press the middle section inward to apply an extrusion force to the dividing strip toward the bending seam.

6. The bridge deck ultra-high performance concrete paving construction method according to claim 5, characterized in that: In the construction step 3), a step groove is provided on the dividing strip, and the step groove is arranged away from the bending seam; the bottom of the step groove has a groove bottom, and the inner side of the step groove has a groove side, and the groove bottom is arranged upwardly inclined along the direction away from the bending seam; the enclosing rib is embedded in the step groove, abuts against the groove bottom, and presses against the groove side, applying an extrusion force to the groove side toward the bending seam.

7. The bridge deck ultra-high performance concrete paving construction method according to claim 6, characterized in that: In the construction step 3), a docking portion is formed in the middle of the dividing strip, and the bottom of the groove is arranged flush with the docking portion; the curved seam has two diagonal braces arranged obliquely toward each other, the bottom of the diagonal brace is docked at the bottom of the curved seam, and the top of the diagonal brace is docked at the docking portion.

8. The bridge deck ultra-high performance concrete paving construction method according to claim 7, characterized in that: In the construction step 3), the bottoms of the two diagonal braces are brought together and docked to form a gathering position; the curved joint has a curved bar, the bottom of the curved bar is docked at the gathering position, and the top of the curved bar is docked at the top of the curved joint.

9. The bridge deck ultra-high performance concrete paving construction method according to any one of claims 1 to 4, characterized in that: In the construction step 5), a film layer is first covered on the fabric layer. After curing the fabric layer for a set time, the film layer is removed and the fabric layer is cured with high-temperature steam until the fabric layer solidifies.

10. The bridge deck ultra-high performance concrete paving construction method according to any one of claims 1 to 4, characterized in that: In the construction step 3), after the steel mesh is connected to the plurality of shear nails, the steel mesh has a plurality of suspended portions, the outer peripheries of the suspended portions are respectively connected to the plurality of shear nails; the suspended portions are arranged in a conical convex shape, and along the direction from the middle to the outer periphery of the suspended portions, the suspended portions are arranged downwardly inclined, and the middle portion of the suspended portions forms a conical convex portion; In the construction step 4), during the process of pouring the ultra-high performance concrete on the steel plate, the delivery pipe is aligned with the conical convex portion from top to bottom, and the ultra-high performance concrete output by the delivery pipe impacts the conical convex portion from top to bottom, and is diffused and poured from the conical convex portion toward the surrounding areas of the external suspended portion until the distribution layer is formed on the steel plate.

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