Concrete structure crack prevention device

Abstract

The utility model provides a concrete structure crack prevention device which comprises a base layer, the base layer is a macadam base layer with high bearing capacity, an elastic isolation layer is arranged on the upper surface of the base layer, an anti-crack fiber net is arranged on the upper surface of the elastic isolation layer, a concrete layer is poured on the anti-crack fiber net, and a temperature control assembly is arranged at one end of the base layer. And a temperature sensor is arranged in the concrete layer. The elastic isolation layer made of the high-elasticity material polyurethane is arranged on the base layer and can be used for forming physical isolation when the concrete layer is poured, direct contact between the concrete layer and the base layer is reduced, and therefore cracks caused by unevenness or shrinkage difference of the base layer are reduced; and then the anti-crack fiber net made of high-strength and high-toughness polypropylene fibers is laid on the upper surface of the elastic isolation layer, so that the tensile strength of the concrete can be enhanced, and cracks formed under the action of external force can be effectively resisted.

Description

Technical Field

[0001] This utility model relates to the field of concrete crack prevention technology, specifically to a concrete structure crack prevention device. Background Technology

[0002] In recent years, with the rapid development of my country's economy and the booming construction industry, after concrete is formed, cracks will appear on the surface or inside the concrete structure due to external forces and the material itself. Since concrete cracks are an important factor affecting the overall quality of the project, they have a profound impact on the building's functionality, lifespan, and overall quality. Consequently, concrete crack control technology has become a crucial technology in building construction.

[0003] For example, the national authorized patent announcement number CN213837083U discloses a concrete crack prevention device, including a first connecting plate and a second connecting plate. A first slot is formed in the middle of one side of the first connecting plate, and a first locking block is movably connected to the middle of one side of the second connecting plate via a first spring. A T-slot is formed at one end of the first connecting plate, and a T-shaped locking block is fixedly connected to one end of the second connecting plate. A first connecting block is engaged with the top of the first connecting plate, and a second slot is formed on one side of the first connecting block. A connecting column is fixedly connected to the other side of the first connecting block. This concrete crack prevention device, through the arrangement of the first slot, first locking block, T-slot, and T-shaped locking block, can connect multiple connecting plates to each other, meeting the device length requirements for different ground lengths. During installation, the first locking block is first pressed in using the first spring, and then the T-shaped locking block is engaged into the T-slot. After the T-shaped locking block is engaged, the first locking block springs into the first slot, making the device connection more secure.

[0004] However, the concrete crack prevention devices mentioned above are somewhat ineffective in preventing concrete cracks, have a high overall structural cost, and the springs are prone to elastic fatigue during long-term use, which gradually weakens or even fails, reducing their effectiveness in preventing concrete cracks. Furthermore, they are somewhat inadequate in preventing temperature cracks, affecting construction efficiency and quality. Utility Model Content

[0005] The present invention aims to solve the problems mentioned in the background art by providing a device for preventing cracks in concrete structures.

[0006] The specific technical solution is as follows:

[0007] A concrete structure crack prevention device includes: a base layer, wherein the base layer is a crushed stone base layer with strong load-bearing capacity, an elastic isolation layer is provided on the upper surface of the base layer, an anti-crack fiber mesh is provided on the upper surface of the elastic isolation layer, a concrete layer is poured on the anti-crack fiber mesh, a temperature control component is provided at one end of the base layer, and a temperature sensor is provided in the concrete layer.

[0008] As a preferred embodiment of this utility model, the elastic isolation layer is provided with multiple sets of transversely uniformly distributed microporous drainage pipes, the surface of which is covered with tiny pores, and the pore diameter of the tiny pores of the multiple sets of microporous drainage pipes is 0.5mm.

[0009] As a preferred embodiment of this utility model, a drain pipe is provided at one end of the elastic isolation layer, and multiple sets of microporous water infiltration pipes are connected inside the elastic isolation layer to form a drainage network. One end of the drain pipe penetrates one side of the elastic isolation layer, and sealant is applied to the penetration point.

[0010] As a preferred embodiment of this utility model, the elastic isolation layer is made of highly elastic polyurethane.

[0011] As a preferred embodiment of this utility model, the crack-resistant fiber mesh is made of high-strength, high-toughness polypropylene fibers.

[0012] In a preferred embodiment of this utility model, an outer tube is inserted into the concrete layer, an inner tube is nested inside the outer tube, a temperature sensor is located in the inner tube, and a controller is provided at one end of the temperature sensor.

[0013] As a preferred embodiment of this utility model, the outer tube and the inner tube are made of polyethylene tube and polyvinyl chloride tube, respectively, and the temperature sensor and the controller are model Pt100 and S7-1200, respectively.

[0014] As a preferred embodiment of this utility model, the temperature control component includes a tripod, which is located at one end of the base layer. A rotating shaft is rotatably mounted at the center of the inner surface of the upper surface of the tripod, and a linkage plate is rotatably connected to one end of the rotating shaft.

[0015] As a preferred embodiment of this utility model, an electric push rod is installed on one end of the lower surface of the tripod via an external plate. One end of the piston rod of the electric push rod is connected to one end of the lower surface of the linkage plate. A clamping block is fixedly installed on the upper surface of the linkage plate. A disassembly sliding hole is provided on one end of the upper surface of the linkage plate. A slider is slidably installed in the disassembly sliding hole. A sliding clamping block is fixedly connected to one end of the upper surface of the slider.

[0016] In a preferred embodiment of this utility model, a fan is pressed and fitted between the sliding clamp block and the clamping block. The upper half of the sliding clamp block and the clamping block are connected by a plug-in fastening screw. The signal output terminal of the temperature sensor is electrically connected to the signal input terminal of the controller. The control output terminal of the controller is connected to the electrical control terminal of the fan through an external shielded cable.

[0017] This utility model has the following beneficial effects:

[0018] 1. The concrete structure crack prevention device provided by this utility model, by setting an elastic isolation layer made of highly elastic polyurethane material on the base layer, can form a physical isolation layer during concrete pouring, reducing direct contact between the concrete layer and the base layer, thereby reducing cracks caused by unevenness or shrinkage differences in the base layer. Furthermore, the base layer uses a high-load-bearing crushed stone base layer, capable of withstanding various loads during the use of the concrete layer. Then, by laying a crack-resistant fiber mesh made of high-strength, high-toughness polypropylene fibers on the surface of the elastic isolation layer, the tensile strength of the concrete is enhanced, effectively resisting crack formation under external forces. Finally, the elastic isolation layer contains uniformly distributed microporous drainage pipes with tiny pores on its surface. This system allows water to permeate while guiding excess water out. During concrete pouring, excess water flows through micropores (0.5mm in diameter) on the surface into microporous drainage pipes and then out through drainage pipes. This reduces internal water accumulation in the concrete layer during pouring, preventing temperature cracks caused by hydration heat. Temperature sensors embedded in the concrete layer monitor internal temperature changes in real time, and temperature control components regulate the concrete layer temperature to prevent cracks caused by excessive temperature differences. Through the dual effects of physical isolation and chemical regulation, the system effectively reduces the formation of concrete layer cracks, significantly improving crack prevention and overall safety, enhancing structural durability, and extending the service life of the concrete structure.

[0019] 2. The concrete structure crack prevention device provided by this utility model can effectively protect the internal temperature sensor and controller through the design of the outer and inner tubes. This allows the temperature sensor to effectively monitor the temperature changes of the concrete layer. When the temperature sensor and controller need to be removed for maintenance, the inner tube can be easily pulled out from the outer tube to avoid damage to the equipment. This facilitates the removal and placement of the temperature sensor and controller. Afterward, the outer tube can remain in the concrete layer. When no longer needed, concrete can be poured into the outer tube to completely integrate it into the concrete layer. Different treatment methods can be used according to actual engineering needs.

[0020] 3. The concrete structure crack prevention device provided by this utility model, through the design of electric push rod, fan, linkage plate, and rotating shaft, transmits the monitored temperature information from the temperature sensor to the controller. After receiving the signal from the temperature sensor, the controller processes it internally, enabling rapid and accurate signal analysis. It then activates the fan to blow air onto the poured concrete layer, using air cooling to remove heat from the concrete surface and prevent overheating caused by internal hydration heat accumulation, thereby preventing temperature difference cracks. The angle of the linkage plate can be adjusted by raising and lowering the electric push rod, causing the fan on the linkage plate to adjust accordingly. This allows for more uniform and effective cooling of the entire concrete structure. Furthermore, the design of the fastening screw, clamping block, and sliding clamp block facilitates the disassembly and repositioning of the fan, enabling real-time monitoring and adjustment of the concrete temperature to prevent temperature difference cracks. This achieves precise control of concrete temperature, improves construction efficiency and quality, and reduces costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the elastic isolation layer provided in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the anti-crack fiber mesh provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the microporous permeable pipe in the cross-sectional structure of the elastic isolation layer provided in this embodiment of the utility model;

[0024] Figure 4 A schematic diagram of the structure of the temperature sensor provided in an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the temperature control component provided in an embodiment of the present utility model;

[0026] Figure 6 This is a structural diagram of the electric actuator provided in an embodiment of the present utility model.

[0027] In the attached image:

[0028] 1. Base layer; 101. Elastic isolation layer; 102. Concrete layer; 103. Drainage pipe; 104. Crack-resistant fiber mesh; 105. Microporous drainage pipe;

[0029] 2. Outer tube; 201. Inner tube; 202. Temperature sensor; 203. Controller;

[0030] 3. Temperature control components; 301. Tripod; 302. Rotating shaft; 303. Linkage plate; 304. Fan; 305. Clamping block; 306. Fastening screw; 307. Electric push rod; 308. Disassembly sliding hole; 309. Sliding block; 310. Sliding clamp block. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Example 1

[0036] This embodiment provides a concrete structure crack prevention device, such as... Figures 1-5As shown, the system includes: a base layer 1, which is made of crushed stone with high load-bearing capacity; an elastic isolation layer 101 on the upper surface of the base layer 1; a crack-resistant fiber mesh 104 on the upper surface of the elastic isolation layer 101; a concrete layer 102 poured on the crack-resistant fiber mesh 104; a temperature control component 3 at one end of the base layer 1; and a temperature sensor 202 inside the concrete layer 102. Multiple sets of transversely evenly distributed microporous drainage pipes 105 are provided within the elastic isolation layer 101. The surface of each microporous drainage pipe 105 is covered with tiny pores, with a pore diameter of 0.5 mm. A drainage pipe 103 is provided at one end of the elastic isolation layer 101. The multiple sets of microporous drainage pipes 105 connect to the drainage pipe 103 inside the elastic isolation layer 101 to form a drainage network. One end of the drainage pipe 103 penetrates one side of the elastic isolation layer 101, and sealant is applied to the penetration point. The elastic isolation layer 101 is made of highly elastic polyurethane. The crack-resistant fiber mesh 104 is made of high-strength, high-toughness polypropylene fibers.

[0037] By setting an elastic isolation layer 101 made of highly elastic polyurethane on the base layer 1, a physical isolation layer can be formed during the pouring of the concrete layer 102, reducing direct contact between the concrete layer 102 and the base layer 1, thereby reducing cracks caused by unevenness or shrinkage differences in the base layer 1. Furthermore, the base layer 1, made of high-load-bearing crushed stone, can withstand various loads during the use of the concrete layer 102. Then, by laying a crack-resistant fiber mesh 104 made of high-strength, high-toughness polypropylene fibers on the upper surface of the elastic isolation layer 101, the tensile strength of the concrete can be enhanced, effectively resisting crack formation under external forces. Finally, the uniformly distributed microporous drainage pipes 105 within the elastic isolation layer 101, with their surfaces covered with tiny pores, allow water to permeate. It can guide excess water out. During the pouring of concrete layer 102, excess water will flow into the microporous drainage pipe 105 through the tiny pores with a diameter of 0.5mm on the surface, and then be discharged through the drainage pipe 103. This reduces the accumulation of internal water in concrete layer 102 during pouring and avoids temperature cracks caused by heat of hydration. Then, the temperature sensor 202 installed in concrete layer 102 monitors the internal temperature change of concrete in real time, and the temperature control component 3 adjusts the temperature of concrete layer 102 to prevent cracks caused by excessive temperature difference. Through the dual action of physical isolation and chemical regulation, the generation of cracks in concrete layer 102 is effectively reduced, thereby significantly improving the crack prevention effect and overall safety, enhancing structural durability, and extending the service life of concrete structure.

[0038] Example 2

[0039] This embodiment provides a concrete structure crack prevention device, such as... Figures 1-5As shown, the system includes: an outer tube 2 inserted into a concrete layer 102, an inner tube 201 nested inside the outer tube 2, a temperature sensor 202 located in the inner tube 201, and a controller 203 at one end of the temperature sensor 202. The outer tube 2 and the inner tube 201 are made of polyethylene and polyvinyl chloride, respectively, and the temperature sensor 202 and the controller 203 are Pt100 and S7-1200, respectively.

[0040] The design of the outer tube 2 and the inner tube 201 effectively protects the internal temperature sensor 202 and controller 203, allowing the temperature sensor 202 to effectively monitor temperature changes in the concrete layer 102. When the temperature sensor 202 and controller 203 need to be removed for maintenance, the inner tube 201 can be easily pulled out from the outer tube 2 to avoid damage to the equipment and facilitate the removal and placement of the temperature sensor 202 and controller 203. Afterward, the outer tube 2 can remain in the concrete layer 102. When no longer needed, concrete can be poured into the outer tube 2 to completely integrate it into the concrete layer 102. Different processing methods can be used depending on the actual engineering requirements.

[0041] Example 3

[0042] This embodiment provides a concrete structure crack prevention device, such as... Figures 1-5 As shown, the temperature control component 3 includes a tripod 301 located at one end of the base layer 1. A rotating shaft 302 is rotatably mounted at the center of the upper surface of the tripod 301, and a linkage plate 303 is rotatably connected to one end of the rotating shaft 302. An electric push rod 307 is mounted on one end of the lower surface of the tripod 301 via an external plate. One end of the piston rod of the electric push rod 307 is connected to one end of the lower surface of the linkage plate 303. A clamping block 305 is fixedly mounted on the upper surface of the linkage plate 303. A disassembly sliding hole 308 is provided at one end of the upper surface of the linkage plate 303. A slider 309 is slidably mounted in the disassembly sliding hole 308, and a sliding clamp block 310 is fixedly connected to one end of the upper surface of the slider 309. A fan 304 is pressed and bonded between the sliding clamp block 310 and the clamping block 305. The upper half of the sliding clamp block 310 and the clamping block 305 are connected by a plug-in fastening screw 306. The signal output terminal of the temperature sensor 202 is electrically connected to the signal input terminal of the controller 203. The control output terminal of the controller 203 is connected to the electrical control terminal of the fan 304 through an external shielded cable.

[0043] Through the design of the electric push rod 307, fan 304, linkage plate 303, and rotating shaft 302, the temperature sensor 202 transmits the monitored temperature information to the controller 203. After receiving the signal from the temperature sensor 202, the controller 203 processes it internally, enabling rapid and accurate signal analysis. It then activates the fan 304 to blow air onto the poured concrete layer 102, using air cooling to remove heat from the concrete surface and prevent overheating due to internal hydration heat accumulation, thus preventing temperature difference cracks. The angle of the linkage plate 303 can be adjusted by raising and lowering the electric push rod 307, causing the fan 304 on the linkage plate 303 to adjust accordingly. This allows for more uniform and effective cooling of the entire concrete structure. Furthermore, the design of the fastening screw 306, clamping block 305, and sliding clamp 310 facilitates the disassembly and repositioning of the fan 304, enabling real-time monitoring and adjustment of the concrete temperature to prevent temperature difference cracks. This achieves precise control of the concrete temperature, improves construction efficiency and quality, and reduces costs.

[0044] In summary, the concrete structure crack prevention device provided in this embodiment has the following advantages: it can significantly improve the crack prevention effect when preventing concrete cracks; compared with traditional crack control measures, the material cost of this device is lower, the construction is simple and easy to promote; it can also enhance structural durability, extend the service life of concrete structures, improve overall safety, and achieve precise control of concrete temperature, thereby improving construction efficiency and quality.

[0045] In use, an elastic isolation layer 101 made of highly elastic polyurethane is physically isolated on the base layer 1 to effectively isolate the concrete from direct contact with the base layer 1, reducing cracks caused by unevenness or shrinkage differences in the base layer 1. Excess water is then guided out through 0.5mm pores on the surface of microporous drainage pipes 105, reducing water accumulation inside the concrete and lowering the risk of temperature cracks caused by hydration heat. Finally, a crack-resistant fiber mesh 104 made of high-strength, high-toughness polypropylene fibers is laid on the upper surface of the elastic isolation layer 101 to enhance the tensile strength of the concrete, effectively resisting crack formation under external forces. The signal output terminal of the temperature sensor 202 is connected to... The signal input terminal of the controller 203 is electrically connected, and the control output terminal of the controller 203 is connected to the electrical control terminal of the fan 304 through an external shielded cable. After monitoring the temperature, when cooling is required, the fan 304 is started to blow air onto the poured concrete layer 102. The air cooling effect removes the heat from the concrete surface, preventing the temperature from becoming too high due to the accumulation of internal hydration heat, thereby preventing the generation of temperature difference cracks. Then, the angle of the linkage plate 303 can be adjusted by raising and lowering the electric push rod 307, so that the fan 304 on the linkage plate 303 can be adjusted accordingly. This can cool the entire concrete structure more evenly and effectively, and the overall cost is low, the construction is simple, and it is easy to promote.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for preventing cracks in concrete structures, characterized in that, include: The base layer (1) is made of crushed stone. An elastic isolation layer (101) is provided on the upper surface of the base layer (1). An anti-crack fiber mesh (104) is provided on the upper surface of the elastic isolation layer (101). A concrete layer (102) is poured on the anti-crack fiber mesh (104). A temperature control component (3) is provided at one end of the base layer (1). A temperature sensor (202) is provided inside the concrete layer (102). The elastic isolation layer (101) is provided with multiple sets of transversely evenly distributed microporous drainage pipes (105). The surface of the microporous drainage pipes (105) is covered with tiny pores, and the pore diameter of the tiny pores of the multiple sets of microporous drainage pipes (105) is 0.5 mm. One end of the elastic isolation layer (101) is provided with a drain pipe (103). The multiple sets of microporous drainage pipes (105) are connected to the drain pipe (103) inside the elastic isolation layer (101) to form a drainage network. One end of the drain pipe (103) penetrates one side of the elastic isolation layer (101), and the penetration point is coated with sealant.

2. The concrete structure crack prevention device according to claim 1, characterized in that, The elastic isolation layer (101) is made of polyurethane, a highly elastic material.

3. The concrete structure crack prevention device according to claim 1, characterized in that, The crack-resistant fiber mesh (104) is made of high-strength, high-toughness polypropylene fibers.

4. A concrete structure crack prevention device according to claim 1, characterized in that, An outer tube (2) is inserted into the concrete layer (102), and an inner tube (201) is nested inside the outer tube (2). The temperature sensor (202) is located in the inner tube (201), and a controller (203) is provided at one end of the temperature sensor (202).

5. A concrete structure crack prevention device according to claim 4, characterized in that, The outer tube (2) and the inner tube (201) are made of polyethylene tube and polyvinyl chloride tube, respectively.

6. A concrete structure crack prevention device according to claim 5, characterized in that, The temperature control component (3) includes a tripod (301), which is located at one end of the base layer (1). A rotating shaft (302) is rotatably installed at the center of the inner surface of the upper surface of the tripod (301), and a linkage plate (303) is rotatably connected to one end of the rotating shaft (302).

7. A concrete structure crack prevention device according to claim 6, characterized in that, An electric push rod (307) is mounted on one end of the lower surface of the tripod (301) via an external plate. One end of the piston rod of the electric push rod (307) is connected to one end of the lower surface of the linkage plate (303). A clamping block (305) is fixedly installed on the upper surface of the linkage plate (303). A disassembly sliding hole (308) is provided on one end of the upper surface of the linkage plate (303). A slider (309) is slidably installed in the disassembly sliding hole (308). A sliding clamping block (310) is fixedly connected to one end of the upper surface of the slider (309).

8. A concrete structure crack prevention device according to claim 7, characterized in that, A fan (304) is pressed and attached between the sliding clamp (310) and the clamping block (305). The upper half of the sliding clamp (310) and the clamping block (305) are connected by a plug-in fastening screw (306). The signal output terminal of the temperature sensor (202) is electrically connected to the signal input terminal of the controller (203). The control output terminal of the controller (203) is connected to the electrical control terminal of the fan (304) through an external shielded cable.

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