Crack control system and method for ship lock formed by pouring gold-clad silver concrete

Abstract

The invention provides a crack control system and method for a ship lock formed by pouring gold-clad silver concrete, and is suitable for the technical field of ship lock construction. The crack control system comprises a monitoring module, a data processing module, a display module and an alarm module, precise monitoring and crack control early warning of chloride ion diffusion of the ship lock component are achieved, the timeliness and pertinence of structure maintenance are effectively improved, a crack control method is further provided based on the crack control system, and the crack control system is suitable for popularization and application. Comprising the steps of designing a ladder-shaped inner and outer layer concrete interface, arranging a steel wire mesh, arranging a chloride ion diffusion monitoring sensor, pouring inner layer concrete, spreading a magnetic self-healing capsule, pouring outer layer concrete and maintaining seawater erosion. And a high-strength and corrosion-resistant steel wire mesh is arranged on the interface to control the generation of cracks, and the cracks are actively repaired by actively controlling the fracture of the magnetic self-healing capsule.

Description

Technical Field

[0001] The invention relates to the technical field of ship lock construction, and in particular to a crack control system and method for a ship lock cast by casting gold-coated silver concrete. Background Art

[0002] For offshore concrete structures, due to the high concentration of chloride ions in seawater and sea breeze, long-term use will cause chloride ions to gradually penetrate into the concrete, causing cracking and damage to the structure, exposing internal accessories, reducing the bearing capacity and service life of the structure, and even facing the threat of collapse. Therefore, these buildings must be built with concrete that is more resistant to offshore wind corrosion, such as corrosion-resistant concrete mixed with fly ash and silicon slag. However, the cost of corrosion-resistant concrete is much higher than that of ordinary concrete. In large concrete structures such as ship locks and dams, the use of a very large amount of corrosion-resistant concrete will seriously increase the construction cost. Therefore, a gold-clad silver design is used as an optimization, that is, the outer layer uses corrosion-resistant concrete while the inner layer still uses conventional concrete.

[0003] Since the outer and inner layers use concrete with different strength and corrosion resistance, the two types of concrete will differ in terms of volume stability, elastic modulus, shrinkage and creep characteristics, and heat dissipation speed during temperature control. This difference causes uneven deformation of different parts of the structure during cooling and shrinkage, resulting in stress concentration and weakening the overall coordinated deformation capacity. This stress concentration increases the potential risk of cracking and is not conducive to the effective control and uniform distribution of concrete cracks.

[0004] Therefore, in the field of ship lock construction technology, there is an urgent need for a crack control method and a corresponding monitoring system that can control the cracks in the gold-coated silver concrete cast ship lock structure. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that cracks are easily generated at the interface of the inner and outer layers of concrete of a gold-coated silver concrete cast ship lock, which in turn causes seawater to erode the internal steel bars. A crack control system and method for a gold-coated silver concrete cast ship lock are proposed, which reduces the maintenance difficulty and maintenance cost of the ship lock structure, greatly prolongs the service life of the ship lock structure, and can be widely used in the field of ship lock construction technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The crack control system of the gold-coated silver concrete cast-molded ship lock includes a monitoring module, a data processing module, a display module and an alarm module;

[0008] The monitoring module transmits the monitoring value to the data processing module via a data line through a chloride ion diffusion monitoring sensor buried at the interface of the inner and outer layers of concrete, and the chloride ion diffusion monitoring sensor is made based on a photonic crystal fiber probe sensor unit;

[0009] The data processing module includes establishing a spatial rectangular coordinate system, determining the spatial three-dimensional coordinates of the chloride ion diffusion monitoring sensor according to its arrangement position, and after receiving the monitoring data of the chloride ion diffusion monitoring sensor, calculating the concentration k of chloride ions around the sensing unit by the change amount ΔI of the spectrum, and when the concentration k of chloride ions around the sensing unit exceeds a certain threshold value K, sending the spatial three-dimensional coordinates of the corresponding chloride ion diffusion monitoring sensor to the display module;

[0010] The display module includes establishing a spatial rectangular coordinate system according to the data processing module, importing a three-dimensional model of the ship lock structure, marking the location of the chloride ion diffusion monitoring sensor in the three-dimensional model, and highlighting the point in the three-dimensional model corresponding to the spatial three-dimensional coordinate after receiving the spatial three-dimensional coordinate sent by the data processing module;

[0011] The alarm module counts the highlighted points in the spatial rectangular coordinate system in real time, and when the highlighted points of the lock structure components account for n% of the total number of points of the components, a maintenance alarm is issued to notify maintenance personnel to perform crack control maintenance on the components.

[0012] The crack control method of the gold-coated silver concrete cast-molded ship lock is based on the crack control system of the gold-coated silver concrete cast-molded ship lock to perform crack control maintenance, and specifically includes the following steps:

[0013] S101. Design the stepped inner and outer concrete interface, including clarifying the specific position and thickness of the outer concrete of the component according to the structural design requirements of the ship lock. The outer concrete must have anti-seepage and anti-corrosion properties. The thickness of the outer concrete in the original design is taken as the minimum thickness. The stepped inner and outer concrete interface is designed along the water flow direction. The step width direction is the same as the water flow direction. The step width is b and the height is h. Every m steps with the same slope direction are a team. A team of steps is mirrored to form a group. The inner and outer concrete interface of the entire component is formed by several groups of steps.

[0014] S102, steel wire mesh arrangement, including selecting high-strength, corrosion-resistant steel wire mesh to be arranged at the interface between inner and outer concrete layers during formwork support and steel bar binding according to on-site construction conditions, wherein the steel wire mesh is arranged perpendicular to the interface between inner and outer concrete layers, and the arrangement spacing is greater than the diameter of the concrete vibrator; for the variable cross-section of the component and the connection between other components, the steel wire mesh is cut using a cutting tool;

[0015] S103, arranging chloride ion diffusion monitoring sensors, including arranging chloride ion diffusion monitoring sensors on the interface between the inner and outer concrete layers of the ship lock structural components, and adjusting the density of the arrangement of the chloride ion diffusion monitoring sensors in the same component according to the proportion of time that each part of the component is corroded by seawater;

[0016] S104, pouring the inner layer concrete, including after confirming that the wire mesh has been correctly installed, pouring the inner layer concrete evenly in a predetermined order, using an inserted vibrating rod to vibrate the concrete to make it dense, and eliminating bubbles and voids generated during the concrete pouring process;

[0017] S105, scattering of magnetic self-healing capsules, including determining the number of magnetic self-healing capsules to be scattered at one time q = s / (πr 2 ), evenly spreading the magnetic self-healing capsules on the poured inner concrete at the interface of the inner and outer concrete layers;

[0018] S106, pouring the outer layer of concrete, including pouring the outer layer of concrete evenly in a predetermined order, preventing the concrete from directly impacting the magnetic self-healing capsule and the chloride ion diffusion monitoring sensor during the pouring process, and vibrating the concrete using an inserted vibrating rod during the pouring process to make the concrete vibrated and compacted, and eliminating bubbles and voids generated during the concrete pouring process;

[0019] S107, seawater erosion maintenance, including when the crack control system issues a maintenance alarm, it is necessary to quickly organize maintenance personnel to perform crack control maintenance, first divide the density of the highlighted points of the component that needs maintenance into regions, and use the area where the highlighted points are concentrated as the immediate maintenance area, and the area where the highlighted points are scattered as the area to be observed, and then use the magnetic field response loading device to control the external magnetic field of the immediate maintenance area to respond to the magnetic self-healing capsules containing magnetic micro-nano powders in the immediate maintenance area, actively control the rupture of the magnetic self-healing capsules, and start repairing the concrete cracks corroded by seawater; after the repair is completed, the points in the three-dimensional model corresponding to the spatial three-dimensional coordinates of the chloride ion diffusion monitoring sensor in the repaired area are no longer counted in the total number of points of the component, and the number of points in the remaining area to be observed of the component is taken as the total number of points of the component.

[0020] As a preferred technical solution of the present invention, the mesh size of the wire mesh is determined according to the concrete grading. When the concrete is the first grade grading, the mesh size is recommended to be 10-15 mm; when the concrete is the second grade grading, the mesh size is recommended to be 20-25 mm; when the concrete is the third grade grading, the mesh size is recommended to be 30-40 mm; when the concrete is the fourth grade grading, the mesh size is recommended to be 40-50 mm.

[0021] As a preferred technical solution of the present invention, the steel wire mesh is positioned by passing a measure steel frame through the mesh, and the chloride ion diffusion monitoring sensor is tied to the measure steel frame.

[0022] As a preferred technical solution of the present invention, the magnetic self-healing capsule comprises magnetic micro-nano powder and a main material for concrete self-healing repair.

[0023] As a preferred technical solution of the present invention, the predetermined order is determined according to the skip-bin method construction process.

[0024] The beneficial effects of the present invention are:

[0025] 1. By burying a chloride ion diffusion monitoring sensor based on a photonic crystal fiber probe sensing unit at the interface between the inner and outer concrete layers, the chloride ion concentration changes are monitored in real time, and the monitoring data is transmitted to the data processing module; by establishing a spatial rectangular coordinate system, the three-dimensional coordinates of the monitoring point are compared and analyzed with the chloride ion concentration threshold, and when the threshold is exceeded, the corresponding point information is transmitted to the display module; by marking the monitoring points in the three-dimensional model and highlighting the exceeding points, the alarm module counts the proportion of the exceeding points and sets the threshold to trigger the maintenance alarm; the system realizes the precise monitoring of chloride ion diffusion and crack control early warning of the lock components, effectively improving the timeliness and pertinence of the structural maintenance;

[0026] 2. By designing a stepped inner and outer concrete interface, optimizing the inner and outer concrete interface structure, and arranging a high-strength, corrosion-resistant steel mesh at the inner and outer concrete interface, the concrete's crack resistance is enhanced; through a chloride ion diffusion monitoring sensor, combined with the spreading of magnetic self-healing capsules, crack erosion monitoring, early warning and active repair are achieved; when seawater erosion occurs, the magnetic field response loading device is used to actively control the rupture of the self-healing capsules to repair the cracks; this method achieves accurate monitoring of the chloride ion concentration at the inner and outer concrete interface of the ship lock, rapid early warning of cracks and efficient repair, solves the problem of easy cracks at the inner and outer concrete interface, significantly reduces the maintenance difficulty and cost of the ship lock structure, and improves the durability and service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a flow chart of a crack control method for a gold-coated silver concrete casting-molded ship lock of the present invention;

[0028] Figure 2 It is a schematic diagram of the interface between the stepped inner and outer concrete layers of the present invention;

[0029] Reference numerals in the figure: 1-outer concrete, 2-wire mesh, 3-interface between inner and outer concrete layers, 4-inner concrete layer. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given here are only used to illustrate and explain the present invention and cannot be used to limit the present invention. It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention may also have other embodiments and variations thereof, and therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0031] Embodiment 1, the crack control system of the gold-coated silver concrete casting forming ship lock comprises a monitoring module, a data processing module, a display module and an alarm module;

[0032] The monitoring module transmits the monitoring value to the data processing module via a data line through a chloride ion diffusion monitoring sensor buried at the interface of the inner and outer concrete layers. The chloride ion diffusion monitoring sensor is made based on a photonic crystal fiber probe sensing unit. When the chloride ions in the concrete diffuse to the vicinity of the sensing unit, the refractive index of the medium around the photonic crystal fiber in the sensing unit changes from δ to δ′, causing the overall response spectrum of the reflected light received by the spectrometer to change in wavelength and light intensity.

[0033] The data processing module includes establishing a spatial rectangular coordinate system, determining the spatial three-dimensional coordinates of the chloride ion diffusion monitoring sensor according to its arrangement position, and after receiving the monitoring data of the chloride ion diffusion monitoring sensor, the concentration k of chloride ions around the sensing unit is calculated by the change amount ΔI of the spectrum, and the relationship between the chloride ion concentration k and the spectrum change ΔI is expressed by a functional relationship, and the relationship is determined by experimental fitting; when the concentration k of chloride ions around the sensing unit exceeds a certain threshold value K, the spatial three-dimensional coordinates of the corresponding chloride ion diffusion monitoring sensor are sent to the display module;

[0034] The display module establishes a spatial rectangular coordinate system according to the data processing module, imports a three-dimensional model of the ship lock structure, marks the location of the chloride ion diffusion monitoring sensor in the three-dimensional model, and after receiving the spatial three-dimensional coordinates sent by the data processing module, highlights the point in the three-dimensional model corresponding to the spatial three-dimensional coordinates;

[0035] The alarm module counts the highlighted points in the spatial rectangular coordinate system in real time. When the highlighted points of the lock structure components account for 60% of the total number of points of the components, a maintenance alarm is issued to notify maintenance personnel to perform crack control maintenance on the components.

[0036] Embodiment 2, the crack control method of the gold-coated silver concrete casting forming ship lock specifically comprises the following steps:

[0037] S101. Design a stepped inner and outer concrete interface. According to the structural design requirements of the ship lock, the specific position and thickness of the outer concrete 1 of the component are clarified. The outer concrete 1 must have anti-seepage and anti-corrosion properties. The thickness of the outer concrete 1 originally designed is taken as the minimum thickness. The stepped inner and outer concrete interface 3 is designed along the water flow direction to form a transition section between the inner concrete 4 and the outer concrete 1, thereby improving the coordinated deformation capacity of the concrete at the inner and outer concrete interface 3 and reducing the generation of cracks. The width of the step is in the same direction as the water flow direction to avoid the adverse effect on the overall stress of the structure due to weak adhesion and poor integrity of the interface under the impact of the dynamic load of the water flow. The step width is 150mm and the height is 20mm. Every two steps with the same slope direction form a team. A team of steps is mirrored to form a group. The inner and outer concrete interface 3 of the entire component is formed by several groups of steps.

[0038] S102, wire mesh arrangement, including selecting high-strength, corrosion-resistant wire mesh 2 to be arranged at the interface 3 of the inner and outer concrete layers during the formwork support and steel bar binding process according to the on-site construction conditions, wherein the wire mesh 2 is arranged perpendicular to the interface 3 of the inner and outer concrete layers, and the arrangement spacing is greater than the diameter of the concrete vibrator; the mesh size of the wire mesh 2 is determined according to the concrete gradation, and when the concrete is the first grade, the mesh size is recommended to be 10-15mm; when the concrete is the second grade, the mesh size is recommended to be 20-25mm; when the concrete is the third grade, the mesh size is recommended to be 30-40mm; when the concrete is the fourth grade, the mesh size is recommended to be 40-50mm; so that the concrete can also intercept part of the concrete under the action of gravity through the wire mesh 2 to form a step; the wire mesh is positioned by passing the steel bar frame through the mesh; for the variable cross-section of the component and the connection between the component and other components, the wire mesh is cut using a cutting tool;

[0039] S103, arranging chloride ion diffusion monitoring sensors, including arranging chloride ion diffusion monitoring sensors on the interface 3 between the inner and outer concrete layers of the ship lock structural member, tying the chloride ion diffusion monitoring sensors to the measure steel frame, and evenly arranging the chloride ion diffusion monitoring sensors in the same member at a spacing of 5m;

[0040] S104, pouring the inner layer of concrete, including confirming that the wire mesh has been correctly installed, determining the construction sequence according to the skipping method construction process, pouring the inner layer of concrete 4 evenly in the predetermined sequence, and vibrating the concrete using an inserted vibrating rod to make the concrete vibrated and compacted, and eliminating bubbles and voids generated during the concrete pouring process;

[0041] S105, scattering of magnetic self-healing capsules, including determining the number of magnetic self-healing capsules to be scattered at one time q = s / (πr2 ), evenly spreading the magnetic self-healing capsules on the inner layer concrete 4 that has been poured at the interface 3 between the inner and outer layers of concrete;

[0042] S106, pouring the outer layer of concrete, including pouring the outer layer of concrete 1 evenly in a predetermined order, preventing the concrete from directly impacting the magnetic self-healing capsule and the chloride ion diffusion monitoring sensor during the pouring process, and vibrating the concrete using an inserted vibrating rod during the pouring process to make the concrete vibrated and compacted, and eliminating bubbles and voids generated during the concrete pouring process;

[0043] S107, seawater erosion maintenance, including when the crack control system issues a maintenance alarm, it is necessary to quickly organize maintenance personnel to perform crack control maintenance, first divide the density of the highlighted points of the components that need maintenance into regions, and use the areas where the highlighted points are concentrated as immediate maintenance areas, and use the areas where the highlighted points are scattered as areas to be observed, and then use the magnetic field response loading device to control the external magnetic field of the immediate maintenance area to respond to the magnetic self-healing capsules containing magnetic micro-nano powders in the immediate maintenance area, actively control the rupture of the magnetic self-healing capsules, and start repairing the concrete eroded by seawater Cracks; The magnetic self-healing capsules contain magnetic micro-nano powders, epoxy resins and emulsifiers. After the magnetic self-healing capsules are broken, the magnetic powders contained in the microcapsules enable these capsules to be guided by an external magnetic field inside the concrete and accurately concentrated in the crack area. The released epoxy resin acts as a core material and will undergo a curing reaction after coming into contact with external air or moisture in the cracks, thus filling the cracks. After the repair is completed, the points in the three-dimensional model corresponding to the spatial three-dimensional coordinates of the chloride ion diffusion monitoring sensor in the repaired area are no longer counted in the total number of points of the component, and the number of points in the remaining area to be observed of the component is regarded as the total number of points of the component.

[0044] In summary, the crack control system and method of the gold-coated silver concrete cast-molded ship lock of the present invention has the characteristics of significantly reducing the number of cracks, reducing the maintenance difficulty and maintenance cost of the ship lock structure, and improving the durability and service life of the structure in the field of ship lock construction technology.

[0045] It should be understood that the above-mentioned embodiments are one or more embodiments of the present invention, and there are many other embodiments and variations thereof based on the present invention; the variations and modifications made by ordinary technicians in this industry through the present invention without making pioneering innovations all fall within the scope of protection of the present invention.

Claims

1. The crack control system of the gold-coated silver concrete casting ship lock is characterized by: It includes monitoring module, data processing module, display module and alarm module; The monitoring module transmits the monitoring value to the data processing module via a data line through a chloride ion diffusion monitoring sensor buried at the interface of the inner and outer layers of concrete, and the chloride ion diffusion monitoring sensor is made based on a photonic crystal fiber probe sensor unit; The data processing module includes establishing a spatial rectangular coordinate system, determining the spatial three-dimensional coordinates of the chloride ion diffusion monitoring sensor according to its arrangement position, and after receiving the monitoring data of the chloride ion diffusion monitoring sensor, calculating the concentration k of chloride ions around the sensing unit by the change amount ΔI of the spectrum, and when the concentration k of chloride ions around the sensing unit exceeds a certain threshold value K, sending the spatial three-dimensional coordinates of the corresponding chloride ion diffusion monitoring sensor to the display module; The display module includes establishing a spatial rectangular coordinate system according to the data processing module, importing a three-dimensional model of the ship lock structure, marking the location of the chloride ion diffusion monitoring sensor in the three-dimensional model, and highlighting the point in the three-dimensional model corresponding to the spatial three-dimensional coordinate after receiving the spatial three-dimensional coordinate sent by the data processing module; The alarm module counts the highlighted points in the spatial rectangular coordinate system in real time, and when the highlighted points of the lock structure components account for n% of the total number of points of the components, a maintenance alarm is issued to notify maintenance personnel to perform crack control maintenance on the components.

2. A crack control method for a ship lock cast by casting gold-coated silver concrete, which is based on the crack control system of the ship lock cast by casting gold-coated silver concrete as claimed in claim 1 to perform crack control maintenance, characterized in that: The specific steps include: S101. Design the stepped inner and outer concrete interface, including clarifying the specific position and thickness of the outer concrete of the component according to the structural design requirements of the ship lock. The outer concrete must have anti-seepage and anti-corrosion properties. The thickness of the outer concrete in the original design is taken as the minimum thickness. The stepped inner and outer concrete interface is designed along the water flow direction. The step width direction is the same as the water flow direction. The step width is b and the height is h. Every m steps with the same slope direction are a team. A team of steps is mirrored to form a group. The inner and outer concrete interface of the entire component is formed by several groups of steps. S102, steel wire mesh arrangement, including selecting high-strength, corrosion-resistant steel wire mesh to be arranged at the interface between inner and outer concrete layers during formwork support and steel bar binding according to on-site construction conditions, wherein the steel wire mesh is arranged perpendicular to the interface between inner and outer concrete layers, and the arrangement spacing is greater than the diameter of the concrete vibrator; for the variable cross-section of the component and the connection between the component and other components, the steel wire mesh is cut using a cutting tool; S103, arranging chloride ion diffusion monitoring sensors, including arranging chloride ion diffusion monitoring sensors on the interface between the inner and outer concrete layers of the ship lock structural components, wherein the chloride ion diffusion monitoring sensors in the same component are evenly arranged at a spacing of l; S104, pouring the inner layer concrete, including after confirming that the wire mesh has been correctly installed, pouring the inner layer concrete evenly in a predetermined order, using an inserted vibrating rod to vibrate the concrete to make it dense, and eliminating bubbles and voids generated during the concrete pouring process; S105, scattering of magnetic self-healing capsules, including determining the number of magnetic self-healing capsules to be scattered at one time q = s / (πr 2 ), evenly spreading the magnetic self-healing capsules on the poured inner concrete at the interface of the inner and outer concrete layers; S106, pouring the outer layer of concrete, including pouring the outer layer of concrete evenly in a predetermined order, preventing the concrete from directly impacting the magnetic self-healing capsule and the chloride ion diffusion monitoring sensor during the pouring process, and vibrating the concrete using an inserted vibrating rod during the pouring process to make the concrete vibrated and compacted, and eliminating bubbles and voids generated during the concrete pouring process; S107, seawater erosion maintenance, including when the crack control system issues a maintenance alarm, it is necessary to quickly organize maintenance personnel to perform crack control maintenance, first divide the density of the highlighted points of the component that needs maintenance into regions, and use the area where the highlighted points are concentrated as the immediate maintenance area, and the area where the highlighted points are scattered as the area to be observed, and then use the magnetic field response loading device to control the external magnetic field of the immediate maintenance area to respond to the magnetic self-healing capsules containing magnetic micro-nano powders in the immediate maintenance area, actively control the rupture of the magnetic self-healing capsules, and start repairing the concrete cracks corroded by seawater; after the repair is completed, the points in the three-dimensional model corresponding to the spatial three-dimensional coordinates of the chloride ion diffusion monitoring sensor in the repaired area are no longer counted in the total number of points of the component, and the number of points in the remaining area to be observed of the component is taken as the total number of points of the component.

3. The crack control method of the gold-clad silver concrete casting ship lock according to claim 2 is characterized by: The mesh size of the wire mesh is determined according to the concrete gradation. When the concrete is grade one, the mesh size is recommended to be 10-15 mm; when the concrete is grade two, the mesh size is recommended to be 20-25 mm; when the concrete is grade three, the mesh size is recommended to be 30-40 mm; when the concrete is grade four, the mesh size is recommended to be 40-50 mm.

4. The crack control method of the gold-clad silver concrete casting ship lock according to claim 2 is characterized by: The steel wire mesh is positioned by passing a measure steel frame through the mesh, and the chloride ion diffusion monitoring sensor is tied to the measure steel frame.

5. The crack control method of the gold-clad silver concrete casting ship lock according to claim 2 is characterized by: The magnetic self-healing capsule comprises magnetic micro-nano powder and a main material for concrete self-healing repair.

6. The crack control method of the gold-clad silver concrete casting ship lock according to claim 2 is characterized by: The predetermined order is determined according to the skip-bin construction process.

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