A construction technology for bridge deck paving

Abstract

This application relates to the technical field of road and bridge construction, and particularly relates to a construction technology for bridge deck paving, which includes the following steps: S1. Measuring and setting out; S2. Removing floating slurry on the bridge deck and roughening; S3. Measuring and setting the elevation of the vibrating beam walking track; S4. Laying a steel mesh layer; S5. Setting up formwork; S6. Pouring, spreading, and leveling concrete; S7. First surface finishing; S8. Second surface finishing; S9. Texturing; S10. Concrete curing; This application can improve the structure of relevant steel mesh sheets to effectively reinforce a relatively thick concrete layer and improve the shear strength, flexural strength, punching shear resistance, and bending resistance of the concrete layer.

Description

Technical Field

[0001] The present application relates to the technical field of road and bridge construction, and in particular to a bridge deck paving construction process. Background Art

[0002] With the rapid development of the national economy, my country has vigorously developed the transportation industry. In the past decade or so, my country has built many large-span bridges.

[0003] Bridge deck paving is one of the main construction links in bridge construction. Bridge deck paving refers to the protective layer laid on the bridge deck to prevent the wheels (or tracks) from directly wearing the bridge deck, spread the wheel load, and provide a flat and non-slip driving surface for vehicles.

[0004] A complete bridge deck pavement usually consists of the following layers from top to bottom: 1. pavement body, 2. waterproof layer, 3. bonding layer. The pavement body can generally be divided into two layers: upper layer and lower layer. The upper layer is also called wear layer or anti-skid layer, which is used to resist the wear and shear force caused by vehicle load on the bridge deck pavement and provide the roughness required for driving. Asphalt concrete is often used. The main function of the lower layer is to correct the unevenness of the bridge deck structure and ensure the paving thickness of the upper layer. Sometimes it also has a waterproofing effect. Generally, dense asphalt concrete is used, and steel mesh needs to be laid in advance to reinforce the asphalt concrete. The upper and lower layers of the pavement body should form a whole to form a stable, durable, flat and anti-skid pavement. The pavement body can also be laid at one time without upper and lower layers, such as using 12cm thick reinforced concrete.

[0005] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: some bridge decks need to be paved with a thicker concrete layer, and the related steel mesh is a single-layer sheet structure with a relatively thin thickness, which makes it difficult to effectively reinforce the thicker concrete layer, resulting in low shear strength, bending strength, shear resistance and bending resistance of the concrete layer. Summary of the invention

[0006] In order to improve the structure of the steel mesh, to effectively reinforce the thicker concrete layer, and to increase the shear strength, bending strength, shear resistance and bending resistance of the concrete layer, the present application provides a bridge deck paving construction process.

[0007] A bridge deck paving construction process adopts the following technical solution:

[0008] A bridge deck paving construction process comprises the following steps:

[0009] S1. Surveying and setting out: Before construction, re-measure the bridge deck centerline, bridge deck width, drainage pipe position and bridge deck elevation. According to the longitudinal mileage pile number of the bridge, the measurement is carried out with five meters as one section (five points are arranged on average for one half-width section);

[0010] S2. Remove the floating mortar on the bridge deck and roughen the surface: First, chisel off the floating mortar and loose concrete on the bridge deck slab, the exposed sponge strips and loose concrete at the root of the guardrail, and then use an air compressor to assist manual flushing to thoroughly clean the bridge deck slab, ensuring no dust, floating mortar, or loose concrete;

[0011] S3. Survey and set the elevation of the vibrating beam walking track: The vibrating beam track is fabricated by welding steel bars. The bottom of the vibrating beam track uses steel bar heads embedded in the bridge deck slab as support steel bars, and a continuous steel bar is welded on the top of the support steel bars as the vibrating beam walking track. After the support steel bars are embedded, weld the track steel bars strictly according to the elevation data provided by the survey team to ensure that the top elevation of the track steel bars is consistent with the top elevation of the bridge deck pavement concrete, and use the top elevation of the track steel bars as the control elevation of the bridge deck pavement concrete;

[0012] S4. Lay the steel bar mesh layer: The specifications of the steel bar mesh layer are designed according to the width, length, and lap requirements of the bridge deck pavement, and are prefabricated in the factory; after the steel bar mesh layer arrives at the site, the specifications, appearance quality, and quality indicators of the steel bar mesh layer are inspected on-site. After passing the inspection, it is put into use for laying;

[0013] S5. Set up the formwork: The bridge deck pavement concrete is poured in a whole width. No side formwork is set, only the end formwork is supported; before installing the formwork, the top surface of the bridge needs to be accurately measured to ensure the elevation of the pavement layer of the bridge deck and the transverse and longitudinal slopes; the formwork is made of wooden formwork according to the thickness of the concrete pavement layer. The wooden formwork uses square timbers. The formwork is placed on the mortar leveling layer, and the back is supported by channel steel and steel pipe frames as triangular braces. The formwork joints need to be tightly closed, and sponge strips are stuffed in the joints to prevent leakage of mortar;

[0014] S6. Concrete pouring, spreading, and leveling:

[0015] A Pouring sequence: The bridge deck pavement concrete is poured in a whole width for the left and right sides of each continuous section. When pouring the concrete, it is poured flat from one end to the other end of each continuous section. The bridge deck pavement concrete of each continuous section is formed at one time, and no construction joint is set in the middle;

[0016] B Preparation before concrete pouring: After the steel bar mesh layer is tied and anchored, the surveyors review the center line position, the top elevation of the track, and the transverse and longitudinal slopes of the track top, and remove the debris on the working surface. Wet the surface of the beam body with water. After confirmation, the concrete can be poured;

[0017] C The concrete pouring should be continuous, preferably from the downhill to the uphill. The free fall height of the concrete pouring should not be greater than 2m; when conducting batching and spreading, use a shovel to turn it over, and it is strictly prohibited to throw and rake. At the corners, the insertion vibrator should be used to vibrate in sequence first to assist batching;

[0018] Vibration of concrete: After the concrete is paved, first use a vibrating rod for vibration. The vibration time for each insertion should not be less than 20 s. After the coarse and fine aggregates are evenly distributed, then use a plate vibrator to vibrate comprehensively in a criss-cross pattern. The overlapping area of the vibration surface should be 100 mm - 200 mm, and the vibration time for each time should not be less than 30 s. Use a vibrating beam to vibrate the entire width until the cement slurry floats to the surface;

[0019] E Levelling of concrete: When using a vibrating beam for operation, assign special personnel to control the traveling speed, shoveling and filling of materials to ensure that the paved surface is full and dense; The vertical feeding and the leveling working surface should be controlled within a range not greater than 2 m; The steel bar tracks for the vibrating beam to travel should be removed in a timely manner along with the progress of pouring, vibrating and leveling. The gaps left after the tracks are removed should be filled and leveled in a timely manner along with the paving operation;

[0020] S7. First troweling: After the vibrating beam operation is completed, set up a working platform of a stool support welded by steel pipes on the working surface. Manually use a wooden trowel for the first troweling, use a short wooden trowel to trim the edges and the drainage outlets on the bridge, and the first troweling will scrape out the cement slurry on the concrete surface:

[0021] S8. Second troweling: After the concrete begins to set and before it finally sets, use a steel trowel for the second troweling. The construction personnel can lay a wooden board flat on the working surface as an operating platform. During operation, first level it with a 3 m scraping bar, and then finish the surface with a steel trowel;

[0022] S9. Texturing: Through three times of troweling with a wooden formwork, rough texture is made;

[0023] S10. Concrete curing: After the concrete is textured and formed, cover it with a plastic cloth on the upper layer and a geotextile on the lower layer. When starting the curing, a sprayer can be used to sprinkle water to prevent the concrete surface from peeling. After the concrete finally sets, then cover it with a geotextile soaked in water for curing. The curing period is more than 7 days.

[0024] By adopting the above technical solution, the steel bar mesh layer body in the present application replaces the relevant steel bar mesh sheets. Compared with the relevant steel bar mesh sheets with a single-layer sheet structure, the steel bar mesh layer body in the present application has a thicker thickness and a complex three-dimensional structure, and can effectively reinforce a relatively thick concrete layer, improving the shear strength, flexural strength, punching shear resistance and bending resistance of the concrete layer. The relevant steel bar mesh sheets are tied on the construction site, while the steel bar mesh layer body in the present application is prefabricated in the factory and can be transported, lifted and placed at the construction site for laying and installation, which can greatly improve the construction efficiency.

[0025] Optionally, the steel bar mesh layer body includes at least two layers of steel bar meshes and multiple columns. Each layer of steel bar mesh is arranged opposite to each other, and all the columns penetrate each layer of steel bar mesh. The steel bar mesh is slidably connected to the columns; In step S4, each steel bar mesh layer body is laid side by side tightly, and then laid row by row along the advancing direction of the road surface.

[0026] By adopting the above technical solution, a steel mesh layer body is fabricated using at least two layers of steel meshes and multiple columns, enabling the steel mesh layer body to have a complex three-dimensional structure. Compared with the related single-layer sheet-like steel mesh, the steel mesh layer body in this application has an increased thickness, capable of effectively reinforcing a relatively thick concrete layer, enhancing the shear strength, flexural strength, punching shear resistance, and bending resistance of the concrete layer. Moreover, since the steel mesh is slidably connected to the columns, the relative positions of the steel mesh and the columns can be adjusted to regulate the spacing between adjacent steel mesh layers, thereby adjusting the overall thickness of the steel mesh layer body to accommodate concrete layers of different thicknesses.

[0027] Optionally, an elastic plate is provided between each layer of the steel meshes of each steel mesh layer body. The elastic plate always applies an elastic force to the two layers of steel meshes, and the column is threadedly fitted with a nut for pressing against the steel mesh. In step S4, after each steel mesh layer body is laid in place, according to the designed pouring thickness of the concrete, the spacing between adjacent steel mesh layers is adjusted by rotating the nut to adjust the overall thickness of the steel mesh layer body.

[0028] By adopting the above technical solution, the elastic plate and the nut cooperate to keep the relative position relationship between the steel mesh and the column relatively constant. According to the designed pouring thickness of the concrete, since the elastic plate always applies an elastic force to the two layers of steel meshes, the spacing between adjacent steel mesh layers can be automatically and quickly adjusted by rotating the nut to quickly and efficiently adjust the overall thickness of the steel mesh layer body. When the two layers of steel meshes approach each other, the elastic plate is further compressed and flattened; when the two layers of steel meshes move away from each other, the elastic plate further releases the elastic force and thickens.

[0029] Optionally, the elastic plate is provided with a plurality of insertion holes. In step S6, after the concrete is poured, the concrete is poured into all the insertion holes. After the concrete solidifies, the concrete layer and the elastic plate form a three-dimensional interpenetrating network integral structure.

[0030] By adopting the above technical solution, after the concrete is poured, the concrete is poured into all the insertion holes. After the concrete solidifies, the concrete layer and the elastic plate form a three-dimensional interpenetrating network integral structure, and the concrete layer and the elastic plate are bonded into one body, further enhancing the shear strength, flexural strength, punching shear resistance, and bending resistance of the concrete layer.

[0031] Optionally, a plurality of reinforcing rods are commonly connected between each pair of elastic plates of the same steel mesh layer body. In step S4, the reinforcing rods connect the adjacent elastic plates into one body. After the concrete solidifies, the concrete layer and all the reinforcing rods form a three-dimensional interpenetrating network integral structure.

[0032] By adopting the above technical solution, the reinforcing rods connect adjacent elastic plates into a whole, making all the elastic plates in the same steel mesh layer body into a whole, improving the overall strength and structural complexity of the steel mesh layer body, and further effectively reinforcing the concrete layer by the steel mesh layer body. After the concrete solidifies, the concrete layer and all the reinforcing rods form a three-dimensional interpenetrating network integral structure, and the concrete layer and the reinforcing rods are bonded into a whole, further improving the shear strength, flexural strength, punching shear resistance and bending resistance of the concrete layer.

[0033] Optionally, diagonal tension rods are fixedly arranged between each grid of the steel mesh; in step S6, after the concrete is poured and solidified, the concrete layer and the diagonal tension rods form a three-dimensional interpenetrating network integral structure.

[0034] By adopting the above technical solution, the diagonal tension rods can effectively strengthen the structural strength of the steel mesh; after the concrete is poured and solidified, the concrete layer and the diagonal tension rods form a three-dimensional interpenetrating network integral structure, and the concrete layer and the diagonal tension rods are bonded into a whole, further improving the shear strength, flexural strength, punching shear resistance and bending resistance of the concrete layer.

[0035] Optionally, each of the steel mesh layer bodies in the same row is hinged to each other, and each of the steel mesh layer bodies in the same row can be superposed and stacked on each other; in step S4, the superposed and hinged steel mesh layer bodies in the same row in a stacked state are hoisted and placed on the bridge deck, and each steel mesh layer body is unfolded and laid one by one.

[0036] By adopting the above technical solution, the relevant steel mesh sheets are tied on the construction site, while the steel mesh layer bodies in this application are prefabricated in the factory, transported and hoisted to the construction site, and each steel mesh layer body is unfolded and laid one by one, so that the laying and installation of the steel mesh layer body can be quickly completed, and the construction efficiency can be greatly improved. When transporting the steel mesh layer body, folding the steel mesh layer body into a stacked state can make the steel mesh layer body closely arranged, save transportation space and is conducive to efficient transportation.

[0037] Optionally, in step S4, after the distance between adjacent steel mesh layers is adjusted, the top end of the column is bent.

[0038] By adopting the above technical solution, after the distance between adjacent steel mesh layers is adjusted, bending the top end of the column can make the top end of the column face the side, which will not harm the operators and has high safety; after the concrete is poured and solidified, the hooked top of the column can form a hooked connection with the concrete layer, and the column can be more stably bonded with the concrete layer into a whole.

[0039] In summary, this application includes at least one of the following beneficial technical effects:

[0040] 1. The steel mesh layer in the present application replaces the related steel mesh sheet. Compared with the related single-layer sheet-like steel mesh sheet, the steel mesh layer in the present application is thicker and has a complex three-dimensional structure. It can effectively reinforce the thicker concrete layer and improve the shear strength, bending strength, punching resistance and bending resistance of the concrete layer;

[0041] 2. The elastic plate and nut cooperate to keep the steel mesh and the column in a relatively constant positional relationship; according to the designed pouring thickness of concrete, since the elastic plate always applies elastic force to the two layers of steel mesh, the spacing between adjacent steel mesh layers can be automatically and quickly adjusted by turning the nut, so as to quickly and efficiently adjust the overall thickness of the steel mesh layer;

[0042] 3. After the concrete is poured and solidified, the concrete layer, elastic plate, reinforcement rod and inclined rod form a three-dimensional interlaced mesh structure. The concrete layer and the steel mesh layer are more stably bonded together, further improving the shear strength, bending strength, punching resistance and bending resistance of the concrete layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic structural diagram of a steel mesh layer in a stacked state according to an embodiment of the present application;

[0044] Figure 2 It is a schematic structural diagram of a steel mesh layer in an embodiment of the present application in an unfolded and flattened state;

[0045] Figure 3 It is a schematic diagram of the structure of a separate steel mesh layer in an embodiment of the present application.

[0046] Explanation of the reference numerals: 1. steel mesh layer; 2. steel mesh; 21. diagonal brace; 3. column; 4. elastic plate; 41. through hole; 5. reinforcement rod. DETAILED DESCRIPTION

[0047] The following is combined with Figures 1-3 This application is described in further detail.

[0048] The embodiment of the present application discloses a bridge deck paving construction process, which includes the following steps:

[0049] S1. Surveying and setting out: Before construction, re-measure the bridge deck centerline, bridge deck width, drain pipe position and bridge deck elevation. According to the longitudinal mileage pile number of the bridge, the measurement is carried out with five meters as one section (five points are arranged evenly in one half-width section).

[0050] S2. Remove floating slurry and roughen the bridge deck: First, remove the floating slurry and loose concrete on the bridge deck, the sponge strips and loose concrete exposed at the base of the guardrail, and then use an air compressor to assist in manual flushing to thoroughly clean the bridge deck to ensure that there is no dust, floating slurry or loose concrete.

[0051] S3. Setting the elevation of the vibrating beam walking track: The vibrating beam track is made by welding steel bars. At the bottom of the vibrating beam track, steel bar heads are embedded into the bridge deck as supporting steel bars, and a continuous steel bar is welded to the top of the supporting steel bars as the vibrating beam walking track. After the embedding of the supporting steel bars is completed, the track steel bars are welded strictly according to the elevation data provided by the survey team to ensure that the elevation of the top surface of the track steel bars is consistent with the elevation of the top surface of the bridge deck paving concrete, and the elevation of the top surface of the track steel bars is used as the control elevation of the bridge deck paving concrete.

[0052] S4. Laying the steel mesh layer 1: The specifications of the steel mesh layer 1 are designed according to the width, length and lap requirements of the bridge deck paving and prefabricated in the factory; after the steel mesh layer 1 arrives at the site, the specifications, appearance quality and quality indicators of the steel mesh layer 1 are inspected on site. After passing the inspection, it is put into laying and use.

[0053] Refer to Figure 1 and Figure 2 , each steel mesh layer 1 in the same row is hinged to each other through hinges, and each steel mesh layer 1 in the same row can be superposed and stacked on each other. The relevant 2 pieces of steel mesh are tied on the construction site, while the steel mesh layer 1 in this application is prefabricated in the factory, transported and hoisted to the construction site, and each steel mesh layer 1 is unfolded one by one and laid one by one, so that the laying and installation of the steel mesh layer 1 can be quickly completed, which can greatly improve the construction efficiency. When transporting the steel mesh layer 1, folding the steel mesh layer 1 into a stacked state can make the steel mesh layer 1 closely arranged, save transportation space and is conducive to efficient transportation.

[0054] Refer to Figure 3 , the steel mesh layer 1 includes at least two layers of steel mesh 2 and multiple columns 3. In this embodiment, the steel mesh layer 1 includes two layers of steel mesh 2 and four columns 3. Each layer of steel mesh 2 is arranged opposite and parallel to each other, all the columns 3 are parallel and flush with each other, and all the columns 3 pass through each layer of steel mesh 2, and the steel mesh 2 is slidably connected to the columns 3.

[0055] Refer to Figure 3 , a plurality of equally spaced elastic plates 4 are connected between each layer of steel mesh 2 of each steel mesh layer 1, and the elastic plates 4 always apply elastic force to the two layers of steel mesh 2, and nuts for pressing against the steel mesh 2 are threadedly fitted on the columns 3. After each steel mesh layer 1 is laid in place, according to the designed pouring thickness of the concrete, the distance between adjacent layers of steel mesh 2 is adjusted by rotating the nuts to adjust the overall thickness of the steel mesh layer 1. When the two layers of steel mesh 2 approach each other, the elastic plates 4 are further compressed and flattened; when the two layers of steel mesh 2 move away from each other, the elastic plates 4 further release elastic force and become thicker.

[0056] Refer to Figure 3, the elastic plate 4 is randomly provided with a plurality of insertion holes 41. After the concrete is poured, the concrete is poured into all the insertion holes 41. After the concrete solidifies, the concrete layer and the elastic plate 4 form a three-dimensional interpenetrating network integral structure. A plurality of mutually parallel reinforcing rods 5 are fixedly connected together between each elastic plate 4 of the same steel mesh layer body 1. The reinforcing rods 5 connect the adjacent elastic plates 4 into one body, so that all the elastic plates 4 located in the same steel mesh layer body 1 become one body, improving the overall strength and structural complexity of the steel mesh layer body 1, and further effectively reinforcing the concrete layer by the steel mesh layer body 1.

[0057] Refer to Figure 3 , after the distance between adjacent steel mesh 2 layers is adjusted, the top end of the column 3 is bent, which can make the top end of the column 3 face the side, so as not to hurt the operator, and the safety is high; after the concrete is poured and solidified, the hook-shaped top of the column 3 can form a hook connection with the concrete layer, and the column 3 can be more stably bonded to the concrete layer as a whole.

[0058] S5. Formwork erection: The concrete pouring of the bridge deck pavement is carried out in a full-width pouring, without setting side formwork, only end formwork is supported; before the formwork is installed, the top surface of the bridge needs to be accurately measured to ensure the elevation, transverse and longitudinal slopes of the pavement layer of the bridge deck; the formwork is made of wooden formwork according to the thickness of the concrete pavement layer, and the wooden formwork is made of square wood. The formwork is seated on the mortar leveling layer, and the back is supported by channel steel and steel pipe racks as triangular braces. The formwork joints need to be tightly closed, and sponge strips are stuffed in the joints to prevent slurry leakage.

[0059] S6. Concrete pouring, spreading and leveling:

[0060] A Pouring sequence: The concrete for the bridge deck pavement is poured in a full-width manner in the left and right lanes in units of spans. When pouring the concrete, it is spread from one end of each span to the other end. The concrete for the bridge deck pavement of each span is formed at one time, and no construction joint is set in the middle;

[0061] B Preparation before concrete pouring: After the steel mesh layer body 1 is tied and anchored, the surveyors review the center line position, the top elevation of the track, and the transverse and longitudinal slopes of the track top, and remove the sundries on the working surface, wet the surface of the beam body with water, and then the concrete can be poured after confirmation;

[0062] C The concrete pouring should be continuous and preferably carried out from the downhill to the uphill. The free fall height of the concrete pouring should not be greater than 2m; when carrying out batching and spreading, the shovel should be used in a reverse manner, and throwing and raking are strictly prohibited. At the corners, the insertion vibrator should be used to vibrate in sequence first to assist in batching;

[0063] Vibration of concrete: After the concrete is paved, first use a vibrating rod for vibration. The vibration time for each insertion should not be less than 20s. After the coarse and fine aggregates are evenly distributed, then use a flat vibrator to vibrate comprehensively in a crisscross pattern. The overlapping area of the vibration surface should be 100mm - 200mm, and the vibration time for each time should not be less than 30s. Use a vibrating beam to vibrate the entire width until the cement slurry floats to the surface;

[0064] E Levelling of concrete: When using a vibrating beam for operation, assign special personnel to control the traveling speed, shoveling and filling of materials to ensure that the paving surface is full and dense; The vertical feeding and leveling operation surface should be controlled within a range not greater than 2m; The steel bar tracks for the vibrating beam to travel should be removed in a timely manner along with the progress of pouring, vibrating and leveling. The gaps left after the tracks are removed should be filled and leveled in a timely manner along with the paving operation.

[0065] S7. First troweling: After the vibrating beam operation is completed, set up a working platform of a stool support welded by steel pipes on the working surface. Manually use a wooden trowel for the first troweling, use a short wooden trowel to trim the edges and decorate the drainage outlets on the bridge, and scrape out the cement slurry on the surface of the concrete during the first troweling.

[0066] S8. Second troweling: After the concrete starts to set and before it finally sets, use a steel trowel for the second troweling. Construction workers can lay a wooden board flat on the working surface as an operating platform. During operation, first level it with a 3m scraper bar, and then finish the surface with a steel trowel.

[0067] S9. Texturing: Through three trowelings with a wooden formwork, rough texture is made.

[0068] S10. Concrete curing: After the concrete is textured and formed, cover it with a plastic cloth on the upper layer and a geotextile on the lower layer. When starting the curing, a sprayer can be used to sprinkle water to prevent the surface of the concrete from peeling. After the concrete finally sets, then cover it with a geotextile soaked in water for curing. The curing period is more than 7 days.

[0069] The implementation principle of a bridge deck paving construction process in an embodiment of this application is as follows:

[0070] The steel mesh layer body 1 in this application replaces the relevant steel mesh 2 sheets. Compared with the relevant single-layer sheet-like steel mesh 2 sheets, the steel mesh layer body 1 in this application has a thicker thickness and a complex three-dimensional structure, which can effectively reinforce a relatively thick concrete layer and improve the shear strength, flexural strength, punching shear resistance and bending resistance of the concrete layer.

[0071] The relevant steel mesh 2 sheets are tied on the construction site, while the steel mesh layer body 1 in this application is prefabricated and formed in the factory and can be transported and hoisted to the construction site for laying and installation, which can greatly improve the construction efficiency.

[0072] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A bridge deck paving construction process, It is characterized in that The following steps are involved: S1. Surveying and setting out: Before construction, re-measure the bridge deck centerline, bridge deck width, drainage pipe position and bridge deck elevation. According to the longitudinal mileage pile number of the bridge, the measurement is carried out with five meters as one section (five points are arranged on average for one half-width section); S2. Remove the floating slurry and roughen the bridge deck: First, remove the floating slurry and loose concrete on the bridge deck, the sponge strips and loose concrete exposed at the root of the guardrail, and then use an air compressor to assist in manual flushing to thoroughly clean the bridge deck to ensure that there is no dust, floating slurry and loose concrete; S3. Elevation measurement and design of the vibrating beam running track: The vibrating beam track is made of welded steel bars. The steel bar heads are embedded in the bridge deck as supporting steel bars at the bottom of the vibrating beam track. A full-length steel bar is welded on the top of the supporting steel bars as the vibrating beam running track. After the supporting steel bars are embedded, the track steel bars are welded in strict accordance with the elevation data provided by the surveying team to ensure that the top surface elevation of the track steel bars is consistent with the top surface elevation of the bridge deck paving concrete. The top surface elevation of the track steel bars is used as the control elevation of the bridge deck paving concrete. S4. Laying the steel mesh layer (1): The specifications of the steel mesh layer (1) are designed according to the width, length and overlap requirements of the bridge deck, and are prefabricated in the factory; after the steel mesh layer (1) arrives at the site, the specifications, appearance quality and quality indicators of the steel mesh layer (1) are inspected and accepted on site, and the steel mesh layer (1) is put into use after passing the inspection; S5. Formwork: The bridge deck paving concrete is poured in an entire section, with no side formwork and only end formwork. The top surface of the bridge must be accurately measured before the formwork is installed to ensure the elevation, horizontal and vertical slopes of the paved layer. The formwork is made of wooden formwork according to the thickness of the concrete paving layer, and the wooden formwork is made of square wood. The formwork is placed on the mortar leveling layer, and the back is made of channel steel and steel pipe frame as a triangular back support. The formworks need to be tightly joined, and the gaps are filled with sponge strips to prevent leakage. S6. Concrete pouring, paving and leveling: A. Casting sequence: The bridge deck paving concrete is cast in units of left and right sections. When pouring concrete, pour it from one end of each section to the other. Each section of bridge deck paving concrete is formed at one time, and no construction joints are provided in the middle. B. Preparation before concrete pouring: After the steel mesh layer (1) is tied and anchored, the surveyor shall check the centerline position, track top elevation, track top transverse and longitudinal slopes, remove debris from the working surface, wet the beam surface with water, and pour concrete after confirmation; C. Concrete pouring should be continuous, preferably from downhill to uphill, and the free fall height of concrete pouring should not be greater than 2m; when spreading and paving, the shovel should be turned upside down, and throwing and raking are strictly prohibited. The corners should be vibrated sequentially with an inserted vibrator to assist in spreading; D. Concrete vibration: After concrete is spread, vibrate with a vibrating rod first. The time of inserting and vibrating should not be less than 20 seconds. After the coarse and fine aggregates are evenly distributed, use a flat vibrator to vibrate in a crisscross manner. The vibration surface overlaps 100mm-200mm. The time of vibrating should not be less than 30s. Use a vibrating beam to vibrate the entire area until the cement slurry floats to the surface. Leveling of E concrete: When using a vibrating beam for operation, assign special personnel to control the traveling speed, shoveling, and filling to ensure that the paving surface is full and dense. The vertical feeding and leveling operation surface should be controlled within a range not greater than 2m. The walking steel bar tracks of the vibrating beam should be removed in a timely manner following the progress of pouring, vibrating, and leveling. The gaps left after the tracks are removed should be filled and leveled in a timely manner along with the paving operation. S7. First troweling: After the vibrating beam operation is completed, set up a working platform of stool supports welded by steel pipes on the working surface. Manually use a wooden trowel for the first troweling, use a short wooden trowel to trim the edges and decorate the drainage outlets on the bridge. The first troweling spreads out the cement slurry on the concrete surface. S8. Second troweling: After the concrete begins to set and before it finally sets, use a steel trowel for the second troweling. Construction workers can lay a wooden board flat on the working surface as an operating platform. During operation, first level with a 3m scraper bar, and then finish with a steel trowel. S9. Texturing: Through three trowelings with a wooden formwork, rough texture is made. S10. Concrete curing: After the concrete is textured and formed, cover it with plastic sheeting on the upper layer and geotextile on the lower layer. When starting the curing, a sprayer can be used to sprinkle water to prevent the concrete surface from peeling. After the concrete finally sets, then cover it with geotextile soaked in water for curing. The curing period is more than 7 days. The steel bar mesh layer body (1) includes at least two layers of steel bar meshes (2) and multiple columns (3). Each layer of steel bar mesh (2) is arranged opposite to each other. All columns (3) penetrate each layer of steel bar mesh (2), and the steel bar mesh (2) is slidably connected to the columns (3). In step S4, each steel bar mesh layer body (1) is laid side by side tightly, and then laid row by row along the advancing direction of the road surface. An elastic plate (4) is provided between each layer of steel bar meshes (2) of each steel bar mesh layer body (1). The elastic plate (4) always exerts an elastic force on the two layers of steel bar meshes (2), and the column (3) is threadedly fitted with a nut for tightening the steel bar mesh (2). In step S4, after each steel bar mesh layer body (1) is laid in place, according to the designed pouring thickness of the concrete, adjust the spacing between adjacent layers of steel bar meshes (2) by rotating the nut to adjust the overall thickness of the steel bar mesh layer body (1). The elastic plate (4) is provided with multiple through holes (41). In step S6, after the concrete is poured, the concrete fills all the through holes (41). After the concrete solidifies, the concrete layer and the elastic plate (4) form a three-dimensional interpenetrating network-like integral structure.

2. A bridge deck paving construction process according to claim 1, characterized in that: Multiple reinforcing rods (5) are commonly connected between each elastic plate (4) of the same steel bar mesh layer body (1). In step S4, the reinforcing rods (5) connect adjacent elastic plates (4) into one body. After the concrete solidifies, the concrete layer and all the reinforcing rods (5) form a three-dimensional interpenetrating network-like integral structure.

3. A bridge deck paving construction process according to claim 1, characterized in that: An inclined tension rod (21) is fixedly provided between each grid of the steel bar mesh (2). In step S6, after the concrete is poured and solidified, the concrete layer and the inclined tension rod (21) form a three-dimensional interpenetrating network-like integral structure.

4. A bridge deck paving construction process according to claim 1, characterized in that: Each of the steel bar mesh layers (1) in the same row is hinged to each other, and each of the steel bar mesh layers (1) in the same row can be superposed and stacked on each other; in step S4, the steel bar mesh layers (1) that are hinged to each other in the same row in the stacked state are lifted and placed on the bridge deck, and each steel bar mesh layer (1) is unfolded and laid one by one.

5. A bridge deck paving construction process according to claim 1, characterized in that: In step S4, after the distance between adjacent steel bar meshes (2) is adjusted, the top end of the column (3) is bent.

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