A weather-resistant repairing consumable matched road and bridge crack minimally invasive repairing construction tool and construction method

Abstract

The present application relates to the field of road and bridge maintenance, and discloses a kind of weathering repair consumable supporting road and bridge crack minimally invasive repair construction frock and method.The frock includes grouting pipe and multiple annular pads, the upper end of grouting pipe is fixedly connected with pressure disc, the lower end is provided with air bag and connected with gas pipeline, adjacent annular pads are connected by rotatable link, and the bottom is bonded with sealing pad.During construction, annular pads are arranged along cracks and drilled, sealing pad is compressed to form external sealing after being inserted into grouting pipe, then air is filled into air bag to make it radially expand, realizing anchoring of grouting pipe and internal sealing of micro-hole, then pressure grouting is carried out, and the construction is completed after pressure relief and removal.The present application flexibly adapts to curved cracks through rotatable link, air-filled air bag realizes anchoring and internal sealing, cooperates with external sealing pad to build double leakage prevention system, and improves sealing reliability, construction efficiency and repair quality.

Description

Technical Field

[0001] This invention relates to the field of road and bridge infrastructure maintenance and repair technology, specifically to a construction tool for minimally invasive repair of road and bridge cracks using weather-resistant repair consumables, and also to a construction method using this tool. Background Technology

[0002] With the rapid development of my country's transportation infrastructure construction, concrete structures such as highways and bridges inevitably develop various forms of cracks during long-term use due to factors such as temperature stress, vehicle loads, and uneven foundation settlement. The appearance of cracks not only affects the aesthetics of the structure but also weakens its integrity and durability, leading to steel corrosion, accelerated concrete carbonation, and in severe cases, even threatening structural safety.

[0003] Currently, the main methods for repairing road and bridge cracks include grooved filling, surface coating, and pressure grouting. Grooved filling requires creating V-shaped grooves along the crack direction, causing secondary damage to the original pavement structure and resulting in long-term traffic disruption. Surface coating can only treat surface cracks and cannot achieve deep repair. While pressure grouting can achieve deep filling, traditional grouting equipment has the following problems during construction: First, the lack of effective anchoring measures after the grouting pipe is inserted into the micropore makes it easy for the grouting pipe to shift or fall off under the grouting pressure during the grouting process, resulting in grouting interruption or grout leakage. Second, the sealing at the junction of the micropore and the crack is difficult to guarantee. During grouting, the grout is easy to overflow from the orifice and crack gaps, causing material waste and road pollution, and the grouting pressure is also difficult to establish effectively. Third, most of the existing sealing devices are rigid structures, which are difficult to adapt to the angle changes between the annular gasket and the crack when the holes are arranged along the crack direction, resulting in unstable sealing effect.

[0004] In summary, a construction tooling and method for minimally invasive repair of road and bridge cracks, using weather-resistant repair consumables, is proposed to solve the above problems. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a construction tool and method for minimally invasive repair of road and bridge cracks, which includes weather-resistant repair consumables. It has advantages such as reliable anchoring of the grouting pipe and a reliable leak-proof system with internal and external double seals, solving the problems of unreliable anchoring of the grouting pipe and unreliable sealing of the orifice in existing road and bridge crack grouting repair tools.

[0006] (II) Technical Solution The technical solution of the present invention to solve the above technical problems is as follows: a construction tool for minimally invasive repair of road and bridge cracks with weather-resistant repair consumables, including a grouting pipe and an annular pad, wherein a pressure plate adapted to the central hole of the annular pad is fixedly connected to the outer side of the upper end of the grouting pipe, and an air bladder is sleeved on the outer side of the lower end of the grouting pipe, and an air supply pipeline connected to and extending to the top of the pressure plate is provided on the top of the air bladder. The annular gaskets are evenly spaced and adjacent annular gaskets are connected by a rotatable connecting plate. The bottom of both the annular gaskets and the connecting plate is bonded with a sealing gasket.

[0007] Furthermore, the air supply line includes a spring-loaded air tube and a valved bend. The upper end of the airbag is provided with a spring-loaded air tube that communicates with it and extends into the interior of the pressure plate, and the top of the pressure plate is fixedly connected to a valved bend that communicates with the upper end of the spring-loaded air tube.

[0008] The beneficial effects of adopting the above-mentioned further solutions are: the spring air tube is extensible and can adapt to the axial displacement and slight bending deformation during the insertion and removal of the grouting pipe in the micro-hole, ensuring that the air supply channel of the airbag is always unobstructed; the valve integrated on the valved bend makes it convenient for construction personnel to control the inflation and deflation operations, improving construction efficiency.

[0009] Furthermore, a circular groove with a T-shaped cross-section is provided on the outer side of the annular pad.

[0010] Furthermore, both ends of the connecting plate are provided with T-shaped sections, and the T-shaped sections are adapted to the shape of the circular groove to achieve a rotatable connection.

[0011] The beneficial effects of adopting the above-mentioned further solution are: after the end of the connecting plate of the T-section is embedded in the T-shaped circular groove, it can rotate freely to adjust the angle without disengaging in the vertical direction. The connection is reliable and easy to assemble and disassemble, so that multiple annular gaskets can form a flexible sealing chain that can be bent at will.

[0012] Furthermore, the upper and lower surfaces of both ends of the connecting plate are crescent-shaped to match the shape of the annular pad.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the crescent-shaped contour allows the connecting plate and the annular gasket to form a smooth transition at both the bottom and the top. When the pressure plate applies pressure downwards, the pressure can be evenly transmitted to the annular gasket and the connecting plate, avoiding local stress concentration that could lead to uneven deformation of the sealing gasket and ensuring a stable and reliable sealing effect.

[0014] The present invention also provides a construction method using the above-mentioned tooling, comprising the following steps: S1: Place multiple annular pads on the road and bridge plane cracks, and adjust the relative positions of adjacent annular pads by rotating the connecting plate, so that the multiple annular pads are arranged and distributed along the crack direction; S2: Using the central circular hole of the annular pad as a positioning reference, drill micro-holes on the road and bridge planar structure; S3: Insert the grouting pipe and the airbag fitted at its lower end into the microhole through the central hole of the annular pad until the pressure plate covers the top of the annular pad and the connecting plate; S4: Apply downward positive pressure to the top of the pressure plate to press the pressure plate tightly against the annular gasket and the connecting plate, thereby sealing and covering the cracks and micropores around the sealing gasket at the bottom of the annular gasket and the connecting plate. S5: Inflate the airbag through the air supply line, causing the airbag to expand radially within the micropores. Use the expansion pressure to anchor the grouting pipe to the wall of the micropores and seal the inside of the micropores. S6: While the airbag is inflated and anchored, weather-resistant repair materials are injected into the crack through the grouting pipe; S7: After grouting is completed, the airbag is depressurized through the air supply pipeline. After the airbag contracts, the grouting pipe and the airbag are pulled out of the micropore, and the annular gasket and the connecting plate are removed.

[0015] The beneficial effects of this invention are: 1) The weather-resistant repair consumables are matched with the construction tool for minimally invasive repair of road and bridge cracks. By setting an inflatable elastic airbag at the lower end of the grouting pipe, the airbag expands radially in the micropore after inflation, generating sufficient static friction with the hole wall, and firmly anchoring the grouting pipe in the micropore. Under the action of grouting pressure, the grouting pipe will not undergo axial displacement or fall off.

[0016] 2) The weather-resistant repair consumables are matched with the construction tooling for minimally invasive repair of road and bridge cracks. Through the combination of external sealing gasket compression sealing and internal airbag inflation sealing, a complete and sealed grouting channel is formed from the micropore opening to the bottom of the hole. The sealing gasket seals the hole opening and crack surface gaps, and the airbag seals the internal channel of the micropore. The two work together to effectively prevent the grout from leaking out of any path during the grouting process, ensuring the effective establishment of grouting pressure and the full penetration and filling of the grout into the fine branches of the crack. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation of the present invention.

[0018] In the diagram: 1. Grouting pipe; 2. Annular gasket; 3. Pressure plate; 4. Airbag; 5. Connecting plate; 6. Sealing gasket; 7. Spring air pipe; 8. Valve bend; 9. Circular groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the embodiments, by Figure 1-2 The invention provides a construction tool for minimally invasive repair of road and bridge cracks using weather-resistant repair consumables. The invention includes a grouting pipe 1 and an annular pad 2. A pressure plate 3 adapted to the central hole of the annular pad 2 is fixedly connected to the outer side of the upper end of the grouting pipe 1. An air bladder 4 is sleeved on the outer side of the lower end of the grouting pipe 1. An air supply pipeline is provided on the top of the air bladder 4, which is connected to it and extends to the top of the pressure plate 3. The annular gaskets 2 are evenly spaced, and adjacent annular gaskets 2 are connected by a rotatable connecting plate 5. Both the bottom of the annular gaskets 2 and the connecting plate 5 are bonded with sealing gaskets 6. The air supply line includes a spring air pipe 7 and a valved bend 8. The upper end of the airbag 4 is provided with a spring air pipe 7 that communicates with it and extends into the pressure plate 3. The top of the pressure plate 3 is fixedly connected to a valved bend 8 that communicates with the upper end of the spring air pipe 7. The outer side of the annular pad 2 is provided with a circular groove 9 with a T-shaped cross-section; Both ends of the connecting plate 5 are provided with T-shaped sections, and the T-shaped sections are adapted to the shape of the circular groove 9 to achieve a rotating connection; The upper and lower surfaces of both ends of the connecting plate 5 are crescent-shaped to match the shape of the annular pad 2; The present invention also provides a construction method using the above-mentioned tooling, comprising the following steps: S1: Place multiple annular pads 2 on the road and bridge plane cracks, and adjust the relative positions of adjacent annular pads 2 by rotating the connecting plate 5 so that the multiple annular pads 2 are arranged and distributed along the crack direction. S2: Using the central circular hole of the annular pad 2 as the positioning reference, drill micro-holes on the road and bridge planar structure; S3: Insert the grouting pipe 1 and the airbag 4 fitted at its lower end into the microhole through the central hole of the annular pad 2 until the pressure plate 3 covers the top of the annular pad 2 and the connecting plate 5. S4: Apply downward positive pressure to the top of the pressure plate 3 to press the pressure plate 3 tightly against the annular gasket 2 and the connecting plate 5, thereby sealing and covering the cracks and micropores around the sealing gasket 6 at the bottom of the annular gasket 2 and the connecting plate 5. S5: Inflate the airbag 4 through the air supply line, so that the airbag 4 expands radially inside the micropores. Use the expansion pressure to anchor the grouting pipe 1 to the wall of the micropores and seal the inside of the micropores. S6: With the airbag 4 in an inflated and anchored state, weather-resistant repair consumables are injected into the crack through the grouting pipe 1; S7: After grouting is completed, the airbag 4 is depressurized through the air supply line. After the airbag 4 contracts, the grouting pipe 1 and the airbag 4 are pulled out of the micro-hole, and the annular gasket 2 and the connecting plate 5 are removed.

[0021] Working principle: Step 1: Place multiple annular pads 2 in sequence above the cracks in the road and bridge plane. Since adjacent annular pads 2 are connected by connecting plates 5, and the T-shaped sections at both ends of the connecting plates 5 are embedded in the T-shaped circular grooves 9 on the outside of the annular pads 2, the connecting plates 5 can rotate freely in the circular grooves 9. Step 2: According to the actual direction of the crack, adjust the included angle between adjacent annular pads 2 by rotating the connecting plate 5, so that multiple annular pads 2 form an arrangement chain that matches the direction of the curved crack, ensuring that the central hole of each annular pad 2 is located directly above the crack, so as to achieve the adhesion of the sealing gasket 6 at the bottom of each annular pad 2 to the road and bridge surface along the direction of the crack. Step 3: Using the central hole of the annular pad 2 as the drilling positioning guide, a core drilling machine is used to drill micro-holes on the road and bridge plane. The annular pad 2 remains in place during the drilling process to ensure that the drilling position is aligned with the subsequent insertion path of the grouting pipe 1. Step 4: After drilling the microholes, insert the grouting pipe 1 together with the retracted airbag 4 fitted at its lower end into the drilled microhole through the central hole of the annular pad 2 until the lower surface of the pressure plate 3 fixed to the upper end of the grouting pipe 1 completely covers the top plane of the annular pad 2 and the connecting plate 5. At this time, the outlet of the grouting pipe 1 extends below the bottom of the crack, and the airbag 4 is located in the lower middle part of the microhole. Step 5: Apply downward positive pressure to the top of the pressure plate 3. This pressure is evenly transmitted to the annular gasket 2 and the connecting plate 5 through the pressure plate 3, causing the sealing gasket 6 at the bottom of the annular gasket 2 and the connecting plate 5 to undergo elastic compression deformation and fit tightly against the road and bridge plane. This seals and covers the area around the central hole of the annular gasket 2 and the gaps on both sides of the crack, forming the first external sealing barrier. Step 6: Keep the positive pressure of the pressure plate 3 constant, connect the external air source to the valved elbow 8 on the top of the pressure plate 3, open the valve, and the compressed air enters the air bladder 4 through the valved elbow 8 and the spring air pipe 7. Under the action of air pressure, the air bladder 4 expands radially in the micropores, and its outer wall gradually adheres to and presses against the micropore wall. The expanded air bladder 4 generates sufficient static friction with the micropore wall, firmly anchoring the grouting pipe 1 to the micropore wall, so that the grouting pipe 1 will not undergo axial displacement or fall off under the subsequent grouting pressure. At the same time, the expanded air bladder 4 completely fills the cross-section of the micropore, completely sealing the internal channel of the micropore, preventing the grouting material from leaking below the bottom of the micropore, and forming a second internal sealing barrier. Step 7: With the airbag 4 in an anchored state under inflation pressure, connect the grouting pump's delivery hose to the upper end of the grouting pipe 1, start the grouting pump, and inject the weather-resistant repair consumables into the grouting pipe 1 at a certain pressure. The grout flows down along the inside of the grouting pipe 1 to the outlet, and enters the crack cavity under pressure. Since the external sealing gasket 6 has completely sealed the orifice and the internal airbag 4 has completely sealed the bottom of the orifice, the crack and micropores together form a closed grouting space. The grouting pressure can effectively squeeze the grout into the main crack and its fine branch cracks, achieving dense filling of the crack. Step 8: After grouting is completed, once the repair material has reached its initial setting strength, open the valve on the bend with valve 8 to release the air pressure in the airbag 4. After the airbag 4 contracts, it will detach from the wall of the micropore. Pull the grouting pipe 1 and the airbag 4 out of the micropore, remove the annular gasket 2 and the connecting plate 5, and finally fill and smooth the micropore opening with sealing material to complete the entire repair construction.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction tooling system for minimally invasive repair of road and bridge cracks, comprising a grouting pipe (1) and an annular gasket (2), characterized in that: The outer side of the upper end of the grouting pipe (1) is fixed with a pressure plate (3) that is adapted to the central hole of the annular pad (2). The outer side of the lower end of the grouting pipe (1) is fitted with an air bag (4). The top of the air bag (4) is provided with an air supply pipeline that communicates with it and extends to the top of the pressure plate (3). The annular pads (2) are distributed at equal intervals, and adjacent annular pads (2) are connected by a rotatable connecting plate (5). The bottom of the annular pads (2) and the connecting plate (5) are both bonded with sealing gaskets (6).

2. The construction tooling for minimally invasive repair of road and bridge cracks, as described in claim 1, is characterized in that: The air supply pipeline includes a spring air pipe (7) and a valved bend (8). The upper end of the airbag (4) is provided with a spring air pipe (7) that communicates with it and extends into the pressure plate (3). The top of the pressure plate (3) is fixedly connected with a valved bend (8) that communicates with the upper end of the spring air pipe (7).

3. The construction tooling for minimally invasive repair of road and bridge cracks using weather-resistant repair consumables as described in claim 1, characterized in that: The outer side of the annular pad (2) is provided with a circular groove (9) with a T-shaped cross-section.

4. The construction tooling for minimally invasive repair of road and bridge cracks, as described in claim 3, is characterized in that: The cross-sectional shape of both ends of the connecting plate (5) is T-shaped and adapted to the circular groove (9).

5. The construction tooling for minimally invasive repair of road and bridge cracks using weather-resistant repair consumables as described in claim 1, characterized in that: The contours of the upper and lower surfaces at both ends of the connecting plate (5) are crescent-shaped to match the annular pad (2).

6. A construction method using the tooling described in any one of claims 1-5, characterized in that, include: S1: Place multiple annular pads (2) on the road and bridge plane cracks, and adjust the relative positions of adjacent annular pads (2) by rotating the connecting plate (5) so that multiple annular pads (2) are arranged and distributed along the crack direction; S2: Using the central circular hole of the annular pad (2) as the positioning reference, drill micro-holes on the road and bridge planar structure; S3: Insert the grouting pipe (1) and the airbag (4) fitted at its lower end into the microhole through the central hole of the annular pad (2) until the pressure plate (3) covers the top of the annular pad (2) and the connecting plate (5); S4: Apply downward positive pressure to the top of the pressure plate (3) so that the pressure plate (3) presses the annular gasket (2) and the connecting plate (5) together, thereby sealing and covering the cracks and micropores around the sealing gasket (6) at the bottom of the annular gasket (2) and the connecting plate (5). S5: Inflate the airbag (4) through the air supply pipeline, so that the airbag (4) expands radially in the micropore, and use the expansion pressure to anchor the grouting pipe (1) to the wall of the micropore and seal the inside of the micropore. S6: When the airbag (4) is inflated and anchored, weather-resistant repair materials are injected into the crack through the grouting pipe (1); S7: After grouting is completed, the airbag (4) is depressurized through the air supply pipeline. After the airbag (4) contracts, the grouting pipe (1) and the airbag (4) are pulled out from the microhole, and the annular gasket (2) and the connecting plate (5) are removed.

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