Device for strengthening binding force between concrete layers of viaduct surface and using method

Abstract

The invention relates to the technical field of viaduct concrete structure maintenance construction, and discloses a viaduct surface concrete interlayer binding force strengthening device which comprises a support. A plurality of rollers I; the roughening devices are mounted at the tops of the two sides of the support and make contact with the top faces of walls on the two sides of the to-be-roughened concrete 1; a plurality of rollers II; the roughening devices are mounted in the middles of the two sides of the support and make contact with the inner walls of walls on the two sides of the to-be-roughened concrete; a roughening mechanism; the drawing device is arranged on the support and used for drawing out stripes on the concrete surface. The concrete interlayer binding force strengthening device is erected on a concrete surface layer for construction, a constructor can conduct roughening operation on the supporting plate, damage to the concrete surface can be remarkably reduced when stripes are drawn out, and therefore the mechanical property and structural integrity of concrete are protected.

Description

Technical Field

[0001] The invention relates to the technical field of concrete structure maintenance construction, and in particular to a device for strengthening the interlayer bonding force of elevated bridge deck concrete and a method for using the device. Background Art

[0002] In the field of construction, the surface roughening of elevated bridge deck concrete is a key process, and its quality has a direct impact on the strength, durability and aesthetics of the subsequent structure. Traditional construction methods usually require construction workers to perform roughening operations on the concrete surface that has not yet fully solidified. This practice is not only likely to have an adverse effect on the mechanical properties of the elevated bridge deck concrete, but may also lead to insufficient uniformity of the stripe effect, thereby weakening the bonding performance between the two layers of the structure. When construction workers perform roughening before the concrete reaches the initial setting state, it may cause damage to the concrete surface, which in turn leads to a decrease in its bearing capacity and insufficient interlayer bonding, which poses a potential threat to the safety of the overall structure. In addition, the traditional stripe pulling method often delays the pouring of concrete, which not only increases the construction period, but may also cause the entire construction plan to lag, bringing additional challenges to project management. Therefore, it is particularly important to improve the methods and tools for roughening elevated bridge deck concrete to ensure the overall improvement of construction quality and efficiency. In this context, exploring new elevated bridge deck concrete interlayer bonding strengthening operation platforms and technical means will help reduce interference with the concrete surface, improve the flexibility and safety of the construction process, and better meet the needs of modern construction. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problems raised in the background technology and to provide a device for strengthening the interlayer bonding force of elevated bridge deck concrete and a method for using the device.

[0004] The present invention is implemented by the following technical scheme: a device for strengthening the interlayer bonding force of elevated bridge deck concrete, comprising:

[0005] Bracket;

[0006] A plurality of rollers 1; which are mounted on the top of both sides of the bracket and contact the top surface of the wall on both sides of the concrete 1 to be roughened;

[0007] A plurality of rollers 2 are installed in the middle of both sides of the bracket and contact the inner wall of the wall on both sides of the concrete to be roughened;

[0008] The roughening mechanism is arranged on the bracket and is used for roughening the concrete surface.

[0009] As a further improvement of the above solution, it also includes slide rails; which are placed on both sides of the concrete to be roughened, and the roller 1 cooperates with the slide rails.

[0010] As a further improvement of the above scheme, the bracket includes a rectangular support plate, four connecting rods fixed at the four corners of the support plate and two reinforcing rods, the two ends of the reinforcing rods are respectively fixed to the two connecting rods located on the same side, and the bracket also includes two mobile platforms, the two mobile platforms are respectively fixed to the connecting rods on both sides of the support plate, and roller one is installed under the mobile platform.

[0011] As a further improvement of the above solution, the roughening mechanism is provided with several groups, and the roughening mechanism includes a mounting plate and a graining brush fixed to the bottom of the mounting plate, and the height of the roughening mechanism is adjustable.

[0012] As a further improvement of the above scheme, a plurality of vertical plates corresponding to the roughening mechanism are fixed at the bottom of one of the reinforcing rods, and rectangular adjustment holes are opened in the longitudinal direction on the vertical plates. A plurality of connecting rods are fixed on each mounting plate, and the ends of the connecting rods are movable through the adjustment holes and connected with limiting nuts.

[0013] As a further improvement of the above scheme, a strip plate is fixed on the reinforcing rod along its length direction, and a strip groove is opened on the strip plate. Slide blocks corresponding to the number of roughening mechanisms are slidably installed in the strip groove, and the slide blocks are longitudinally perforated. A threaded rod is fixed on the top of the mounting plate, and the top end of the threaded rod moves through the perforation and an adjusting nut is screwed on it.

[0014] As a further improvement of the above scheme, the width L of the concrete to be roughened in the device for strengthening the interlayer bonding force of the elevated bridge deck concrete is greater than L1+2L2, where L1 is the length of the reinforcing rod and L2 is the width of the connecting rod.

[0015] As a further improvement of the above solution, the radius r of the roller 1 should be greater than the depth h of the slide rail.

[0016] As a further improvement of the above scheme, the height H of the elevated bridge deck concrete interlayer bonding strength strengthening working platform satisfies the following formula:

[0017] H-H1<H2-H3

[0018] Wherein: H1 is the bottom end height of roller 15 in the device for strengthening the interlayer bonding force of elevated bridge deck concrete (m); H2 is the height of the walls on both sides of the concrete to be roughened (m); H3 is the thickness of the concrete 1 to be roughened (m).

[0019] Optionally, the width d of the support plate is greater than 30 cm, so that construction workers can move conveniently on the support plate.

[0020] The present invention also proposes a method for using the above-mentioned device for strengthening the interlayer bonding force of elevated bridge deck concrete, which specifically comprises the following steps:

[0021] According to the thickness and width of the concrete to be roughened at the construction site and the width and height of the walls on both sides, make brackets and slide rails of corresponding sizes;

[0022] The prepared elevated bridge deck concrete interlayer bonding strength strengthening device is transported to the construction site, wherein: the slide rail is installed on the walls on both sides, the roller is installed in the slide rail, and the bracket is located on the surface layer of the concrete to be roughened;

[0023] Construction workers, on the supporting plate, operate the elevated bridge deck concrete interlayer bonding strength strengthening mechanism to pull stripes on the surface of the roughened concrete until the roughening is completed.

[0024] 1. The device for strengthening the interlayer bonding force of the elevated bridge deck concrete proposed by the present invention is erected on the concrete surface layer for construction. Construction workers can perform roughening operations on the support plate, which can significantly reduce the damage to the concrete surface when pulling out stripes, thereby protecting the mechanical properties and structural integrity of the concrete.

[0025] 2. The device for strengthening the interlayer bonding force of the elevated bridge deck concrete proposed by the present invention is equipped with rollers and slide rails, which makes movement more convenient and labor-saving, and construction personnel can quickly adjust the working position, thereby effectively improving the overall efficiency of the roughening operation and ensuring the overall construction progress.

[0026] 3. The device for strengthening the interlayer bonding force of the elevated bridge deck concrete proposed by the present invention has a simple structure, low cost, flexible design, and can be customized according to the specific conditions of different construction sites to meet different construction needs, thereby improving practicality and adaptability and having good application prospects.

[0027] 4. The device for strengthening the interlayer bonding force of the elevated bridge deck concrete proposed in the present invention is provided with multiple groups of roughening structures, and the horizontal and vertical positions of the roughening structures can be adjusted. Therefore, different numbers of roughening mechanisms can be adjusted to work as needed, thereby further improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A partial structural stereogram of the device for strengthening the interlayer bonding force of the elevated bridge deck concrete proposed by the present invention;

[0029] Figure 2 A three-dimensional diagram of Embodiment 1 of the device for strengthening the interlayer bonding force of the elevated bridge deck concrete proposed by the present invention;

[0030] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0031] Figure 4 It is a dimensioned diagram of the main structure of the device for strengthening the interlayer bonding force of the elevated bridge deck concrete of the present invention;

[0032] Figure 5 It is a three-dimensional diagram of a roller in the device for strengthening the interlayer bonding force of elevated bridge deck concrete proposed by the present invention.

[0033] Numbers in the figure:

[0034] Concrete to be roughened 1, wall 2, slide rail 3, moving platform 4, roller one 5, reinforcing rod 6, supporting plate 7, connecting rod 8, water spray nozzle 9, vertical plate 10, connecting rod 11, mounting plate 12, slider 13, threaded rod 14, adjusting nut 15, strip plate 16, strip groove 17, limit nut 18, drawing brush 19, roller two 20. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0036] Embodiment 1:

[0037] Reference Figure 1-Figure 5 , this scheme proposes a device for strengthening the interlayer bonding force of elevated bridge deck concrete, including:

[0038] Bracket;

[0039] A plurality of rollers 1; which are mounted on the top of both sides of the bracket and contact the top surface of the wall on both sides of the concrete 1 to be roughened;

[0040] A plurality of rollers 2; which are mounted in the middle of both sides of the bracket and contact the inner wall of the wall on both sides of the concrete 1 to be roughened;

[0041] The roughening mechanism is arranged on the bracket and is used for roughening the concrete surface.

[0042] It should be noted that the device for strengthening the interlayer bonding force of the elevated bridge deck concrete further includes a slide rail 3 ; the slide rail 3 is placed on both sides of the concrete 1 to be roughened, and the roller 1 cooperates with the slide rail 3 .

[0043] The bracket includes a rectangular support plate 7, four connecting rods 8 fixed at the four corners of the support plate 7, and two reinforcing rods 6. The two ends of the reinforcing rods 6 are respectively fixed to the two connecting rods 8 located on the same side. The bracket also includes two moving platforms 4. The two moving platforms 4 are respectively fixed to the connecting rods 8 on both sides of the support plate 7, and the roller 5 is installed under the moving platform 4.

[0044] In this solution, the roughening mechanism is provided in several groups, and the roughening mechanism includes a mounting plate 12 and a graining brush 19 fixed to the bottom of the mounting plate 12, and the height of the roughening mechanism is adjustable.

[0045] It is worth mentioning that a plurality of vertical plates 10 corresponding to the roughening mechanism are fixed at the bottom of one of the reinforcing rods 6, and rectangular adjustment holes are provided on the vertical plates 10 along the longitudinal direction. A plurality of connecting rods 11 are fixed on each mounting plate 12, and the ends of the connecting rods 11 are movable through the adjustment holes and connected to the limiting nuts 18.

[0046] A strip plate 16 is fixed on the reinforcing rod 6 along its length direction, and a strip groove 17 is opened on the strip plate 16. Slide blocks 13 corresponding to the number of roughening mechanisms are slidably installed in the strip groove 17. The slide blocks 13 have through holes in the longitudinal direction. A threaded rod 14 is fixed on the top of the mounting plate 12. The top end of the threaded rod 14 movably passes through the through hole and an adjusting nut 15 is screwed on it.

[0047] In this scheme, the length and height of the roughening operation device are particularly important, so the elevated bridge deck concrete interlayer bonding strength strengthening operation platform is selected according to the following steps;

[0048] First, in order to ensure that the roughening device can be installed on the surface layer of the concrete 1 to be roughened, the following conditions must be met:

[0049] The width L of the concrete 1 to be roughened in the roughening device is greater than L1+2L2, where L1 is the length of the reinforcing rod 6 and L2 is the width of the connecting rod 8.

[0050] The radius r of the roller 5 should be greater than the depth h of the slide rail.

[0051] The height H of the elevated bridge deck concrete interlayer bonding strength strengthening operation platform satisfies the following formula:

[0052] H-H1<H2-H3

[0053] Where: H1 is the bottom height of the roller 5 in the interlayer bonding strength strengthening device of the elevated bridge deck concrete (m); H2 is the height of the walls on both sides of the concrete to be roughened (m); H3 is the thickness of the concrete 1 to be roughened (m)

[0054] Furthermore, in order to ensure that the construction workers can conveniently walk on the elevated bridge deck concrete interlayer bonding force strengthening operation platform, the width d of the support plate 7 is greater than 30 cm, so that the construction workers can move on the support plate 7. This design not only provides sufficient activity space for the construction workers, reduces the risk of accidents during the operation, but also effectively improves the construction efficiency.

[0055] In order to ensure that the elevated bridge deck concrete interlayer bonding strength strengthening work platform can slide smoothly on the slide rail, the radius r of the roller installed on both sides of the platform should be greater than the depth h of the slide rail. This is because if the radius of the roller is smaller than the depth of the slide rail, the roller may not be able to fully contact the bottom of the slide rail, causing the platform to be unable to slide smoothly or increase friction, thereby affecting the smoothness of operation and the durability of the equipment.

[0056] Embodiment 2:

[0057] In order to save more manpower and improve safety during use, in the present solution, both roller 1 5 and roller 2 20 can be driven by servo motors to work. Specifically, servo motors can be installed on the bracket and the moving platform 4. The motors can directly drive roller 1 5 and roller 2 20 or indirectly drive them through a transmission mechanism, so that the present solution can move by itself during work, and the servo motor can be controlled by a remote controller and can be operated by a construction worker standing on the platform or standing nearby, which is more convenient and quick.

[0058] Safety Testing

[0059] After the viaduct deck concrete interlayer bonding strengthening device is prepared, 2-4 construction workers can move the viaduct deck concrete interlayer bonding strengthening device to the designated construction site for testing. First, the slide rails need to be firmly installed on the walls on both sides of the roughened concrete 1 to ensure that they are level and firm. Next, the viaduct deck concrete interlayer bonding strengthening work platform is erected on the concrete surface layer, and the roller is placed between the slide rails to ensure smooth movement and operation. After the erection is completed, 2-3 construction workers will walk on the platform respectively to verify its structural strength and flexibility of operation. This process not only helps to confirm the safety of the platform, but also ensures that the construction workers feel sufficient stability and support in actual operation. After the verification is completed, a construction worker will conduct a mobile test on the viaduct deck concrete interlayer bonding strengthening work platform to evaluate the convenience and flexibility of the platform. Through these meticulous inspection steps, the entire work platform is ensured to be both safe and efficient in actual construction.

[0060] Method for using device for strengthening interlayer bonding force of elevated bridge deck concrete

[0061] According to the thickness and width of the concrete 1 to be roughened at the construction site and the width and height of the walls on both sides, brackets and slide rails of corresponding sizes are manufactured;

[0062] The prepared elevated bridge deck concrete interlayer bonding strength strengthening device is transported to the construction site, wherein: the slide rail is installed on the walls 3 on both sides, the roller 1 is installed in the slide rail, and the bracket is located on the surface layer of the concrete 1 to be roughened;

[0063] The construction workers, on the supporting plate, operate the interlayer bonding strength strengthening mechanism of the viaduct deck concrete to draw stripes on the surface of the roughened concrete 1 until the roughening is completed.

[0064] Subsequently, the slide rails installed on the walls on both sides will be removed to clean up the site and restore the tidiness of the work area.

[0065] Implementation calculation

[0066] In order to calculate the time T(s) required to complete a concrete surface layer of a length D(m) using the device for strengthening the interlayer bonding force of the elevated bridge deck concrete of the present invention, we comprehensively consider several key factors: the walking speed v(m / s) of the construction workers, the width d(m) of the brush head of the roughening tool, and the time t(s) required for the construction workers to move backward the elevated bridge deck concrete interlayer bonding force strengthening work platform.

[0067]

[0068] The walking speed v of the construction workers directly affects the progress of the roughening operation. The faster the walking speed, the shorter the completion time of the operation, thereby improving the operation efficiency. On the other hand, the brush head width d of the roughening tool also plays a key role. The larger the brush head width, the wider the area that can be covered each time, reducing the number of required walks, thereby shortening the operation time. However, the brush head width is not the larger the better. An oversized brush head may affect the uniformity of the concrete roughening effect and increase the inconvenience of the construction workers during the operation, especially in an environment with limited space or requiring delicate operations. Therefore, the brush head width needs to find a balance between improving the operation efficiency and ensuring the stripe effect. In addition, the time t required for the construction workers to move the work platform backward each time is also a time-consuming factor that cannot be ignored in the pull operation. Although the platform movement time is relatively short each time, since the roughening operation requires frequent adjustment of the platform position, the accumulation of these times will have a significant impact on the overall operation time. Therefore, when the construction time is relatively tight, adjustments can be made according to the above influencing factors to shorten the construction period.

[0069] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A device for strengthening the interlayer bonding force of elevated bridge deck concrete, characterized in that: include: Bracket; Several rollers 1; It is installed on the top of both sides of the bracket and contacts the top surface of the wall on both sides of the concrete to be roughened; A plurality of rollers 2; which are mounted in the middle of both sides of the bracket and contact the inner wall of the wall on both sides of the concrete 1 to be roughened; The roughening mechanism is arranged on the bracket and is used for roughening the concrete surface.

2. The device for strengthening the interlayer bonding force of elevated bridge deck concrete as claimed in claim 1, characterized in that: It also includes a slide rail 3 which is placed on both sides of the concrete 1 to be roughened, and a roller 1 cooperates with the slide rail 3 .

3. The device for strengthening the interlayer bonding force of elevated bridge deck concrete according to claim 1, characterized in that: The bracket includes a rectangular support plate 7, four connecting rods 8 fixed at the four corners of the support plate 7, and two reinforcing rods 6. The two ends of the reinforcing rods 6 are respectively fixed to the two connecting rods 8 located on the same side. The bracket also includes two moving platforms 4. The two moving platforms 4 are respectively fixed to the connecting rods 8 on both sides of the support plate 7, and the roller 5 is installed under the moving platform 4.

4. The device for strengthening the interlayer bonding force of elevated bridge deck concrete according to claim 1, characterized in that: The roughening mechanism is provided in several groups, and the roughening mechanism includes a mounting plate 12 and a graining brush 19 fixed to the bottom of the mounting plate 12, and the height of the roughening mechanism is adjustable.

5. The device for strengthening the interlayer bonding force of elevated bridge deck concrete as claimed in claim 1, characterized in that: A plurality of vertical plates 10 corresponding to the roughening mechanism are fixed to the bottom of one of the reinforcing rods 6 , and rectangular adjustment holes are provided in the longitudinal direction on the vertical plates 10 . A plurality of connecting rods 11 are fixed to each mounting plate 12 , and the ends of the connecting rods 11 are movable through the adjustment holes and connected to the limiting nuts 18 .

6. The device for strengthening the interlayer bonding force of elevated bridge deck concrete as claimed in claim 1, characterized in that: A strip plate 16 is fixed on the reinforcing rod 6 along its length direction, and a strip groove 17 is opened on the strip plate 16. Slide blocks 13 corresponding to the number of roughening mechanisms are slidably installed in the strip groove 17. The slide blocks 13 have through holes in the longitudinal direction. A threaded rod 14 is fixed on the top of the mounting plate 12. The top end of the threaded rod 14 movably passes through the through hole and an adjusting nut 15 is screwed on it.

7. The device for strengthening the interlayer bonding force of elevated bridge deck concrete as claimed in claim 5, characterized in that: The width L of the concrete 1 to be roughened in the roughening device is greater than L1+2L2, where L1 is the length of the reinforcing rod 6 and L2 is the width of the connecting rod 8.

8. The device for strengthening the interlayer bonding force of elevated bridge deck concrete as claimed in claim 5, characterized in that: The radius r of the roller 5 should be greater than the depth h of the slide rail.

9. The device for strengthening the interlayer bonding force of elevated bridge deck concrete as claimed in claim 5, characterized in that: The height H of the elevated bridge deck concrete interlayer bonding strength strengthening operation platform satisfies the following formula: H-H1<H2-H3 Wherein: H1 is the bottom end height of roller 15 in the device for strengthening the interlayer bonding force of elevated bridge deck concrete (m); H2 is the height of the walls on both sides of the concrete to be roughened (m); H3 is the thickness of the concrete 1 to be roughened (m). The width d of the support plate 7 is greater than 30 cm, so that construction workers can move on the support plate 7 conveniently.

10. The method for using the device for strengthening interlayer bonding force of elevated bridge deck concrete according to any one of claims 1 to 8, characterized in that: The steps include: According to the thickness and width of the concrete 1 to be roughened at the construction site and the width and height of the walls on both sides, brackets and slide rails of corresponding sizes are manufactured; The prepared elevated bridge deck concrete interlayer bonding strength strengthening device is transported to the construction site, wherein: the slide rail is installed on the walls 3 on both sides, the roller 1 is installed in the slide rail, and the bracket is located on the surface layer of the concrete 1 to be roughened; The construction personnel operate the roughening mechanism on the support plate to draw stripes on the surface of the concrete 1 to be roughened until the roughening is completed.

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