Bridge crack reinforcement structure and reinforcement method

Abstract

The present invention provides a bridge crack reinforcement structure and reinforcement method, which relates to the field of bridge repair technology and aims to solve the technical problem of poor reinforcement effect of existing bridge cracks. The structure comprises a column assembly, a beam assembly, a connecting plate, a cover plate and concrete. The column assemblies are arranged at intervals along the length direction of the crack, and each column assembly includes two columns disposed on both sides of the crack and fixedly inserted on the bridge. The beam assemblies are arranged in a one-to-one correspondence with each column assembly, and each beam assembly includes a plurality of beams, each beam being connected between the two columns of the corresponding column assembly and arranged at intervals along the height direction of the column. Connecting plates are respectively provided on two opposite sides of each column, and the connecting plates are perpendicular to the beams. The cover plate is fixedly connected to the top of each column. Concrete is filled in the crack and covers each column and beam. The bridge crack reinforcement structure of the present invention can ensure that the new concrete and the old concrete have good connection strength.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge repair, and in particular to a bridge crack reinforcement structure and a reinforcement method. Background Art

[0002] With the long-term use of the bridge, cracks extending along the width of the bridge will appear on the surface of the bridge due to various reasons. These cracks need to be reinforced in time to prevent the cracks from continuing to expand and affecting the overall life of the bridge.

[0003] At present, the main reinforcement method for bridge cracks is direct grouting, that is, pouring concrete directly into the cracks. However, this method can usually only seal the cracks on the bridge deck, and has limited effect on the connection of the structures on both sides of the cracks. In response to the above problems, some patents provide reinforcement devices, such as the Chinese invention patent with application number 201910548117.6, which provides a road bridge crack reinforcement device and reinforcement method thereof, which connects the structures on both sides of the crack through steel plates and bolts arranged on the steel plates, and reinforces the newly poured slurry through horizontal and vertical steel bars; another example is the Chinese invention patent with application number 201811401959.0, which provides a road bridge crack reinforcement device and reinforcement method; it also uses the connection of vertical beams and horizontal beams and pouring concrete to reinforce the bridge.

[0004] However, the existing reinforcement device has the disadvantage that the connection between the newly poured concrete and the original concrete is poor, which affects the reinforcement effect. Summary of the Invention

[0005] To this end, the present invention proposes a bridge crack reinforcement structure and reinforcement method to ensure that new concrete and old concrete have a better connection effect.

[0006] The technical solutions of the present invention are as follows:

[0007] In a first aspect, the present invention provides a bridge crack reinforcement structure, comprising:

[0008] A plurality of column assemblies are arranged at intervals along the length of the crack, each of the column assemblies comprising two columns disposed on either side of the crack and fixedly mounted on the bridge;

[0009] A plurality of crossbeam assemblies are arranged in a one-to-one correspondence with each of the column assemblies, each of the crossbeam assemblies includes a plurality of crossbeams, each of the crossbeams is connected between two columns of the corresponding column assembly, and is arranged at intervals along the height direction of the columns;

[0010] Connecting plates, each of which is provided on two opposite sides of each column, and is perpendicular to the crossbeam;

[0011] A cover plate and concrete, wherein the cover plate is fixedly connected to the top of each column; the concrete fills the crack and covers each column and each beam.

[0012] Furthermore, each of the crossbeams is plate-shaped; among the crossbeams connecting the two columns, the bottom-layer crossbeam is pre-welded with a first nut, and the remaining crossbeams are respectively provided with through holes; the columns are provided with a first external thread, which can pass through each of the through holes and be screwed to the first nut.

[0013] Furthermore, the connecting plate is fixed on the crossbeam.

[0014] Furthermore, it also includes a plurality of reinforcing ribs, each of which is connected between two opposite beams of two adjacent beam assemblies.

[0015] Furthermore, several mounting plates are pre-welded on each of the beams, and through holes are opened on the mounting plates. Second external threads are respectively provided on both ends of the reinforcing ribs, and the two ends of the reinforcing ribs can pass through the through holes on the two beams and be screwed to the second nuts.

[0016] In a second aspect, the present invention provides a bridge crack reinforcement method, which uses the bridge crack reinforcement structure described above, comprising the following steps:

[0017] S1. Clean the debris in the crack;

[0018] S2. A process groove is formed on the bridge deck, the process groove covering the crack. A plurality of square grooves are formed on the bottom surface of the process groove at intervals along the length of the crack, each groove intersecting the crack, and avoidance grooves for inserting the connecting plate are formed on the side walls of the grooves;

[0019] S3. Assemble the bridge crack reinforcement structure and place it into the groove, and then grout it.

[0020] Furthermore, in step S2, the depth of the groove is 5-10 mm deeper than the maximum depth of the crack.

[0021] Furthermore, in step S3, the bridge crack reinforcement structure is assembled and placed into the groove for grouting, which specifically includes:

[0022] S31, install two columns on the bottom beam, and then put them into the corresponding grooves. If it is possible to install reinforcement ribs between two adjacent beams, install the reinforcement ribs.

[0023] S32, injecting a certain thickness of slurry into the crack;

[0024] S33, install the second layer of beams from bottom to top on the columns. If reinforcing ribs can be installed between two adjacent beams, install the reinforcing ribs.

[0025] S34, pour a certain thickness of grout into the crack again; if necessary, install the third layer of beams in the same way and then pour grout again;

[0026] S35. Fix the cover plate to the column in the same way as the beam, and then grout the surface of the cover plate so that the grout is flush with the original bridge deck.

[0027] The working principle and beneficial effects of the present invention are:

[0028] In the bridge crack reinforcement structure and reinforcement method provided by the present invention, by inserting the connecting plate into the avoidance groove formed in the original concrete structure, new concrete can be poured into the avoidance groove during subsequent pouring. Compared with the prior art in which the new concrete only contacts the original concrete surface, in the bridge crack reinforcement structure and reinforcement method of the present invention, the new concrete and the original concrete can form a plug-in fit, so that the new concrete and the original concrete can have a better connection effect and a better reinforcement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Figure 1 is a schematic diagram of a bridge with cracks;

[0031] Figure 2 A schematic diagram of a bridge after grooving provided by an embodiment of the present invention;

[0032] Figure 3 A top view of the bridge after slotting provided by an embodiment of the present invention;

[0033] Figure 4 for Figure 3 Cross-sectional view at AA in the middle;

[0034] Figure 5 An axonometric diagram of a bridge crack reinforcement structure provided by an embodiment of the present invention;

[0035] Figure 6 An exploded diagram of the bridge crack reinforcement structure provided by an embodiment of the present invention and its coordination with the bridge.

[0036] In the figure: 100-bridge, 110-crack, 120-bridge deck, 200-process groove, 300-groove, 400-avoidance groove, 500-column assembly, 510-column, 600-beam assembly, 610-beam, 611-first nut, 612-second nut, 613-connecting plate, 614-mounting plate, 615-through hole, 700-reinforcement rib, 710-third nut, 800-cover plate. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0038] Figure 1 The schematic diagram of the bridge 100 shown has a crack 110 formed on its bridge deck 120. The bridge crack reinforcement structure and the bridge crack reinforcement method of this embodiment are intended to reinforce the bridge 100 at the crack 110 to prevent the crack 110 from becoming too large and affecting the service life of the bridge 100.

[0039] The method for strengthening bridge cracks in this embodiment includes the following steps:

[0040] S1, cleaning debris in the crack 110;

[0041] S2. A process groove 200 is formed on the bridge deck 120. The process groove 200 covers the crack 110. A plurality of square grooves 300 are formed on the bottom surface of the process groove 200 at intervals along the length of the crack 110. Each groove 300 intersects with the crack 110. Avoidance grooves 400 for inserting the connecting plate 613 are formed on the sidewalls of the grooves 300.

[0042] S3. Assemble the bridge crack reinforcement structure and place it into the groove 300 for grouting.

[0043] The columns 510 , beams 610 , reinforcement bars 700 , cover plates 800 and concrete used in the reinforcement method constitute the bridge crack reinforcement structure of this embodiment.

[0044] like Figures 2 to 4 As shown, in step S2, the process groove 200 is a square groove; wherein, the process groove 200 covers the crack 110, which means that the crack 110 is completely located on the bottom surface of the square groove; or, in other words, the length of the square groove is greater than the length of the crack 110, and the width of the square groove is greater than the width of the crack 110, wherein the depth of the process groove 200 is, for example, between 20-30 mm.

[0045] like Figures 2 to 4 As shown, the grooves 300 are spaced apart along the length of the crack 110. Depending on the length of the crack 110, the number of grooves 300 may be, for example, four, five, or more. The width of the grooves 300 is slightly greater than the width of the crossbeam 610 described below, so that the crossbeam 610 can fit within the grooves 300. Similarly, the depth of the grooves 300 is slightly greater than the maximum depth of the crack 110, for example, 5-10 mm deeper than the depth of the crack 110. In this embodiment, the grooves 300 intersecting the crack 110 refer to the grooves 300 extending from one side of the crack 110 to the other side of the crack 110.

[0046] like Figures 2 to 4 As shown, in this embodiment, an avoidance groove 400 is opened on the side wall of the groove 300, and the avoidance groove 400 can be used for the insertion of the connecting plate 613 described below; in this embodiment, the width of the avoidance groove 400 is between 30-50 mm.

[0047] refer to Figure 5 As shown, the bridge crack reinforcement structure of this embodiment includes a number of column assemblies 500 equal to the number of grooves 300, and a number of beam assemblies 600 equal to the number of column assemblies 500. Each column assembly 500 includes two columns 510, and the beam assembly 600 includes a plurality of beams 610 connected between the two columns 510 and arranged in an upper and lower interval. After the two columns 510 and the beams 610 between the two columns 510 are connected, they can be placed in the grooves 300 in a one-to-one correspondence.

[0048] In this embodiment, reference Figure 5 As shown, the cross beams 610 are plate-shaped, and a first nut 611 is pre-welded on the cross beam 610 of the bottom layer, and each cross beam 610 of the upper layer is constructed with a through hole; and the column 510 of this embodiment is specifically a screw, which can pass through the through hole and be threadedly connected with the first nut 611, thereby completing the fixation of the column 510 and the cross beam 610 of the bottom layer, and the cross beams 610 of the remaining layers can be fixed by clamping two second nuts 612 threadedly connected to the column 510.

[0049] In this embodiment, the columns 510 and the beams 610 are connected by the above-mentioned method. Compared with welding, the connection of this embodiment is more convenient and can be conveniently applied to the reinforcement of cracks 110 of different depths.

[0050] In this embodiment, reference Figure 5 As shown, the connecting plates 613 are specifically fixed on each beam 610 .

[0051] In this embodiment, the connecting plate 613 is provided and inserted into the avoidance groove 400. During subsequent concrete pouring, new concrete will be poured between the connecting plate 613 and the sidewalls of the avoidance groove 400. By providing the avoidance groove 400 and the connecting plate 613, the solution of this embodiment enables the new concrete to form a plug-in fit with the original concrete, allowing the new concrete to better connect with the original concrete on both sides of the crack 110, achieving a better bonding effect between the new concrete and the original concrete. Without the connecting plate 613 and the avoidance groove 400, the new concrete and the original concrete would only be in surface contact, connecting the original concrete on both sides of the crack 110 solely through bonding, resulting in poor strength. Without the connecting plate 613 and only the avoidance groove 400, the new concrete in the avoidance groove 400 is more likely to separate from the new concrete in the groove 300, compared to the solution of this embodiment, resulting in a reduced strength of the connection between the new concrete and the original concrete on both sides of the crack 110.

[0052] In this embodiment, reference Figure 5 As shown, a plurality of reinforcing ribs 700 are connected between two opposite beams 610 of two adjacent beam assemblies 600. By providing the reinforcing ribs 700, the integrity of the new concrete in the crack 110 can be improved to prevent it from breaking.

[0053] In order to facilitate the installation of each reinforcement rib 700, in this embodiment, reference Figure 5 As shown, several mounting plates 614 are pre-welded on each cross beam 610, and a through hole 615 is opened on the mounting plate 614. A second external thread is provided on both ends of the reinforcing rib 700, and the two ends of the reinforcing rib 700 can pass through the through holes 615 on the two cross beams 610 and be screwed together with the third nut 710.

[0054] In this embodiment, the ribs 700 are installed by screwing, which is more convenient than welding. It should be noted that the ribs 700 can be positioned as needed based on the shape of the cracks 110, and not all through-holes 615 require ribs 700. Alternatively, the assembled columns 510 and beams 610 can be placed in the grooves 300 first, and then the ribs 700 can be installed in the areas where they are suitable.

[0055] In step S3 of the bridge crack reinforcement method, the assembly process of the bridge crack reinforcement structure is as follows:

[0056] S31, install two columns 510 on the bottom beam 610, and then place them into the corresponding grooves 300. If a reinforcing rib 700 can be installed between two adjacent beams 610, install the reinforcing rib 700;

[0057] S32, pouring a slurry layer of a certain thickness into the crack 110;

[0058] S33, install and fix the second layer of beams 610 from bottom to top. If reinforcing ribs 700 can be installed between two adjacent beams 610, install the reinforcing ribs 700. The second layer of beams 610 is installed by first screwing a second nut 612 on the column 510 until it is flush with the slurry layer, then placing the second layer of beams 610, and screwing a second nut 612 on top of the column 510 until the two second nuts 612 clamp the second layer of beams 610.

[0059] S34, pouring a slurry layer of a certain thickness into the crack 110 again;

[0060] If necessary, the third layer of beams 610 are installed in the same manner and then grouting is performed again.

[0061] S35, such as Figure 6 As shown, the cover plate 800 is fixed to the column 510 in the same manner as the beam 610 , and then grouting is performed on the surface of the cover plate 800 so that the grout is flush with the original bridge deck 120 .

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bridge crack reinforcement method, using a bridge crack reinforcement structure, characterized in that: The following steps are involved: S1. Clean the debris in the crack; S2. A process groove is formed on the bridge deck, the process groove covering the crack. A plurality of square grooves are formed on the bottom surface of the process groove at intervals along the length of the crack, each groove intersecting the crack, and avoidance grooves for inserting the connecting plate are formed on the side walls of the grooves; S3. Assemble the bridge crack reinforcement structure and place it into the groove for grouting; In step S3, assembling the bridge crack reinforcement structure and placing it into the groove, and performing grouting includes: S31, install two columns on the bottom beam, and then place them into the corresponding grooves. If reinforcing ribs can be installed between the two corresponding beams, install the reinforcing ribs. S32, pouring a certain thickness of slurry into the crack; S33, install the second layer of beams from bottom to top on the columns. If reinforcing ribs can be installed between the corresponding two beams, install the reinforcing ribs. S34, pour a certain thickness of grout into the crack again; if necessary, install the third layer of beams in the same way and then pour grout again; S35. Fix the cover plate to the column in the same manner as the crossbeam, and then grout the surface of the cover plate so that the grout is flush with the original bridge deck; The bridge crack reinforcement structure includes: A plurality of column assemblies are arranged at intervals along the length of the crack, each of the column assemblies comprising two columns disposed on either side of the crack and fixedly mounted on the bridge; A plurality of crossbeam assemblies are arranged in a one-to-one correspondence with each of the column assemblies, each of the crossbeam assemblies includes a plurality of crossbeams, each of the crossbeams is connected between two columns of the corresponding column assembly, and is arranged at intervals along the height direction of the columns; Connecting plates, each of which is provided on two opposite sides of each column, and is perpendicular to the crossbeam; A cover plate and concrete, wherein the cover plate is fixedly connected to the top of each column; the concrete fills the crack and covers each column and each beam; Each of the crossbeams is plate-shaped; among the crossbeams connecting two of the columns, a first nut is pre-welded on the bottom crossbeam, and each of the remaining crossbeams is provided with a through hole; the columns are provided with a first external thread, which can pass through each of the through holes and be screwed to the first nut; The connecting plate is fixed on the crossbeam; It also includes a plurality of reinforcing ribs, each of which is connected between two opposite beams of two adjacent beam assemblies; Several mounting plates are pre-welded on each of the beams, and through holes are opened on the mounting plates. Second external threads are respectively provided on both ends of the reinforcing ribs, and the two ends of the reinforcing ribs can pass through the through holes on the two beams respectively and be screwed to the second nuts.

2. The bridge crack reinforcement method according to claim 1, characterized in that: In step S2, the depth of the groove is 5-10 mm deeper than the maximum depth of the crack.

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