Joint cutting method and device for channel slope protection concrete panel and electronic equipment

Abstract

The invention discloses a joint cutting method and device for a channel slope protection concrete panel and electronic equipment, and relates to the technical field of channel slope protection engineering.The method comprises the steps that grid division is conducted on the to-be-poured concrete panel of the channel slope protection and cushion layer / base layer soil of the channel slope protection; calculating internal force parameters of the concrete panel after grid division by adopting a finite element model; based on the internal force parameters of the concrete panel, the stress at the kerf and the stress at the non-kerf of the concrete panel under various working conditions are calculated; according to the stress at the joint cutting position and the stress at the non-joint cutting position of the concrete panel under the various working conditions, a concrete slope protection joint dividing scheme is determined, and the concrete slope protection joint dividing scheme comprises the joint cutting time, the joint cutting width and the joint cutting depth. According to the method and the device, the technical problems that only the basic joint cutting range is provided and an accurate panel joint cutting scheme cannot be provided for the joint cutting mode of the concrete panel of the channel slope protection in the water transportation engineering specification in the related technology, so that the concrete panel is easy to crack are solved.

Description

Technical Field

[0001] This invention relates to the field of waterway slope protection engineering technology or other related fields. Specifically, it relates to a method and apparatus for cutting joints in concrete panels for waterway slope protection, as well as electronic equipment. Background Technology

[0002] Concrete panels provide a stable and durable protective surface against water erosion and environmental factors. However, due to the brittleness and shrinkage of concrete, concrete panels are prone to cracking during the hardening process, which not only affects the aesthetics of the structure but may also reduce its durability.

[0003] Currently, the methods for cutting joints in concrete panels mainly rely on standards such as the *Code for Design of Building Ground* (GB 50037-2013), the *Code for Design of Highway Cement Concrete Pavement* (JTG D40-2011), and the *Code for Design of Roofing Engineering* (GB 50345-2012). These standards provide some guidance on the width, depth, and spacing of joints, but these are mostly empirical provisions, lacking quantitative analysis and calculation methods specific to the conditions of concrete panels used in waterway slope protection. Furthermore, existing waterway engineering standards do not provide detailed descriptions of the principles and methods for cutting joints in concrete panels, lacking specific guidance. While they offer general ranges for joint width and depth, they do not delve into the specific impact of these parameters on the stress of the concrete panel, nor do they provide calculation methods.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a method, apparatus, and electronic device for cutting joints in concrete panels for waterway slope protection, which at least solves the technical problem that the joint cutting methods for concrete panels of waterway slope protection in related waterway engineering specifications only provide a basic cutting range and cannot provide a precise panel cutting solution, which easily leads to cracks in the concrete panels.

[0006] According to one aspect of the present invention, a method for cutting joints in a concrete panel of a waterway slope protection is provided, comprising: dividing the concrete panel to be poured and the subbase / base soil of the waterway slope protection into a mesh; calculating the internal force parameters of the meshed concrete panel using a finite element model; calculating the stress at the joint and the stress at the non-joint of the concrete panel under various working conditions based on the internal force parameters of the concrete panel; and determining a jointing scheme for the concrete slope protection based on the stress at the joint and the stress at the non-joint of the concrete panel under various working conditions, wherein the jointing scheme for the concrete slope protection includes: jointing timing, jointing width, and jointing depth.

[0007] Optionally, before meshing the concrete panel to be poured on the channel slope and the subbase / base soil of the channel slope, the method further includes: defining the area of ​​concrete to be poured above the slope surface in the target channel project as the concrete panel of the channel slope; obtaining the location information, range information, and panel parameters of the concrete panel; determining various working conditions and loads of the concrete panel based on the location information, range information, and panel parameters of the concrete panel; and determining the initial calculation parameters of the concrete panel and the subbase / base soil of the channel slope according to the material physical and mechanical parameter table of the concrete panel.

[0008] Optionally, after determining the initial calculation parameters of the concrete panel of the waterway slope protection and the subbase / base soil of the waterway slope protection, the method further includes: constructing a first finite element model corresponding to the concrete panel based on the location information, extent information, panel parameters, and initial calculation parameters of the concrete panel, wherein the first finite element model adopts a preset concrete linear elastic body model; and constructing a second finite element model corresponding to the subbase / base soil of the waterway slope protection based on the initial calculation parameters of the subbase / base soil of the waterway slope protection, wherein the second finite element model adopts a preset Mohr-Coulomb model.

[0009] Optionally, the step of meshing the concrete panel to be poured on the channel slope and the subbase / base soil of the channel slope includes: using a first finite element model to mesh the concrete panel to be poured on the channel slope according to a first mesh spacing and a first predetermined node meshing strategy; and using a second finite element model to mesh the subbase / base soil of the channel slope according to a second mesh spacing and a second predetermined node meshing strategy.

[0010] Optionally, the step of calculating the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions based on the internal force parameters of the concrete panel includes: calculating the stress at the cut joint as 30 kPa and the stress at the non-cut joint as -86 kPa under a first working condition based on the internal force parameters of the concrete panel, wherein the first working condition includes a joint width of 10 mm and a joint depth of 30 mm; and calculating the stress at the cut joint as 77 kPa and the stress at the non-cut joint as 79 kPa under a second working condition based on the internal force parameters of the concrete panel. The second working condition includes a joint width of 10 mm and a joint depth of 50 mm. Based on the internal force parameters of the concrete panel, the stress at the cut joint in the third working condition is calculated to be 16 kPa, and the stress at the non-cut joint is -71 kPa. The third working condition includes a joint width of 5 mm and a joint depth of 30 mm. Based on the internal force parameters of the concrete panel, the stress at the cut joint in the fourth working condition is calculated to be 35 kPa, and the stress at the non-cut joint is -82 kPa. The fourth working condition includes a joint width of 5 mm and a joint depth of 50 mm.

[0011] Optionally, the steps for determining the jointing scheme of the concrete slope protection based on the stress at the cut joints and the stress at the non-cut joints of the concrete panel under various working conditions include: a first jointing scheme in which, along the direction of the waterway, a cut joint is set every 2.5m of the concrete panel, with a joint width of 10mm and a joint depth of 30mm, and a cut joint is set every 5m, with a joint width of 10mm and a joint depth of 50mm; and a second jointing scheme in which, along the direction perpendicular to the waterway, a longitudinal cut joint is set every 2.5m of the concrete slope protection, with a joint width of 10mm and a joint depth of 30mm, and a cut joint is set every 5m, with a joint width of 10mm and a joint depth of 50mm.

[0012] Optionally, after determining the concrete slope protection jointing scheme based on the stress at the cut joints and non-cut joints of the concrete panel under various working conditions, the method further includes: cleaning debris from the joints after implementing the concrete slope protection jointing scheme; for cut joints with a width of 10mm and a depth of 30mm, not grouting is required, only cleanliness is maintained; for cut joints with a width of 10mm and a depth of 50mm, diluted asphalt or special sealant is grouted after drying.

[0013] According to another aspect of the present invention, a joint cutting device for a concrete panel of a waterway slope protection is also provided, comprising: a grid division unit for dividing the concrete panel to be poured on the waterway slope and the subbase / base soil of the waterway slope into grids; an internal force parameter calculation unit for calculating the internal force parameters of the concrete panel after gridding using a finite element model; a joint stress calculation unit for calculating the stress at the joint and the stress at the non-joint of the concrete panel under various working conditions based on the internal force parameters of the concrete panel; and a slope protection jointing scheme determination unit for determining a concrete slope protection jointing scheme based on the stress at the joint and the stress at the non-joint of the concrete panel under various working conditions, wherein the concrete slope protection jointing scheme includes: joint cutting timing, joint cutting width, and joint cutting depth.

[0014] Optionally, the cutting device for the concrete panel of the waterway slope protection also includes: a panel range definition unit, used to define the range of concrete to be poured above the slope surface in the target waterway project as the concrete panel of the waterway slope protection before gridding the concrete panel to be poured and the subbase / base soil of the waterway slope protection; to obtain the location information, range information and panel parameters of the concrete panel; a panel working condition determination unit, used to determine various working conditions and loads of the concrete panel based on the location information, range information and panel parameters of the concrete panel; and a panel initial calculation parameter determination unit, used to determine the initial calculation parameters of the concrete panel of the waterway slope protection and the subbase / base soil of the waterway slope protection according to the material physical and mechanical parameter table of the concrete panel.

[0015] Optionally, the joint cutting device for the concrete panel of the waterway slope protection further includes: a first model building unit, used to construct a first finite element model corresponding to the concrete panel after determining the initial calculation parameters of the concrete panel and the subbase / base soil of the waterway slope protection, based on the location information, range information, panel parameters and the initial calculation parameters of the concrete panel, wherein the first finite element model adopts a preset concrete linear elastic body model; and a second model building unit, used to construct a second finite element model corresponding to the subbase / base soil of the waterway slope protection based on the initial calculation parameters of the subbase / base soil, wherein the second finite element model adopts a preset Mohr-Coulomb model.

[0016] Optionally, the meshing unit includes: a first meshing module, used to mesh the concrete panel to be poured on the channel slope using a first finite element model according to a first mesh spacing and a first predetermined node meshing strategy; and a second meshing module, used to mesh the subbase / base soil of the channel slope using a second finite element model according to a second mesh spacing and a second predetermined node meshing strategy.

[0017] Optionally, the joint stress calculation unit includes: a first working condition joint stress calculation module, used to calculate the stress at the joint as 30 kPa and the stress at the non-joint as -86 kPa based on the internal force parameters of the concrete panel, wherein the first working condition includes a joint width of 10 mm and a joint depth of 30 mm; and a second working condition joint stress calculation module, used to calculate the stress at the joint as 77 kPa and the stress at the non-joint as 79 kPa based on the internal force parameters of the concrete panel, wherein the second working condition includes a joint width of 10 mm and a joint depth of 30 mm. The third working condition cutting stress calculation module is used to calculate the stress at the cutting point as 16 kPa and the stress at the non-cutting point as -71 kPa based on the internal force parameters of the concrete panel. The third working condition includes a cutting width of 5 mm and a cutting depth of 30 mm. The fourth working condition cutting stress calculation module is used to calculate the stress at the cutting point as 35 kPa and the stress at the non-cutting point as -82 kPa based on the internal force parameters of the concrete panel. The fourth working condition includes a cutting width of 5 mm and a cutting depth of 50 mm.

[0018] Optionally, the slope protection jointing scheme determination unit includes: a first jointing scheme in which, along the waterway direction, a cut is made every 2.5m of the concrete panel, with a joint width of 10mm and a joint depth of 30mm, and a cut is made every 5m, with a joint width of 10mm and a joint depth of 50mm; and a second jointing scheme in which, along the direction perpendicular to the waterway, a longitudinal cut is made every 2.5m of the concrete slope protection, with a joint width of 10mm and a joint depth of 30mm, and a cut is made every 5m, with a joint width of 10mm and a joint depth of 50mm.

[0019] Optionally, the joint cutting device for the concrete panel of the waterway slope protection also includes: a debris cleaning unit, used to clean debris inside the joint after determining the jointing scheme of the concrete slope protection according to the stress at the joint and non-joint points of the concrete panel under various working conditions and after implementing the jointing scheme; and a sealing unit, used to keep the joints clean without grouting for joints with a width of 10mm and a depth of 30mm; and to grout diluted asphalt or special sealant after drying for joints with a width of 10mm and a depth of 50mm.

[0020] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to perform the cutting method for the concrete panel of the waterway slope protection described above.

[0021] According to another aspect of the present invention, an electronic device is also provided, including one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the cutting method for the concrete panel of the waterway slope protection as described above.

[0022] According to another aspect of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the steps of the cutting method for the concrete panel of the waterway slope protection as described in any of the above embodiments.

[0023] In this disclosure, the concrete panel to be poured for the channel slope protection and the subbase / base soil of the channel slope protection are meshed; the internal force parameters of the meshed concrete panel are calculated using a finite element model; based on the internal force parameters of the concrete panel, the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions are calculated; according to the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions, the jointing scheme of the concrete slope protection is determined, wherein the jointing scheme of the concrete slope protection includes: the timing of jointing, the width of jointing, and the depth of jointing.

[0024] In this disclosure, a finite element model can be introduced to more accurately analyze the stress distribution of concrete panels under different cutting parameters, thereby determining the optimal jointing scheme for concrete slope protection. By reasonably setting the cuttings, the internal stress of the concrete panel can be effectively released, avoiding irregular cracks caused by stress concentration, enhancing the overall structural stability and durability of the panel, helping to improve the stress state of the concrete panel, and reducing the risk of damage caused by natural shrinkage or temperature changes. This solves the technical problem in related technologies where the cutting method for concrete panels of waterway slope protection in waterway engineering specifications only provides a basic cutting range and cannot provide a precise panel cutting scheme, which easily leads to cracks in the concrete panel. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a flowchart of an optional method for cutting joints in a concrete panel for a waterway slope protection according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of an optional finite element model according to an embodiment of the present invention;

[0028] Figure 3 This is a stress cloud diagram of an optional slit panel according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of an optional cutting device for a concrete panel for a waterway slope protection according to an embodiment of the present invention;

[0030] Figure 5 This is a hardware structure block diagram of an electronic device (or mobile device) for performing a cutting method for concrete panels used in waterway slope protection according to an embodiment of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] To facilitate understanding of the present invention by those skilled in the art, some terms or nouns involved in the various embodiments of the present invention are explained below:

[0034] Channel revetments are protective structures designed and constructed to protect the soil on both sides or the bottom of a waterway from erosion and damage by water flow. In waterway engineering, revetments are made of concrete panels, masonry, geotextiles, or other materials to enhance soil stability and extend the service life of the waterway.

[0035] Concrete panels are a component of waterway slope protection structures. They are usually precast or cast-in-place concrete slabs used to cover and protect the soil from water flow impact and erosion.

[0036] Slit cutting is a process of cutting into the surface of a concrete panel to control crack formation during the hardening process. Slit cutting is divided into true slits and false slits. True slits typically extend through the entire thickness of the panel, while false slits are only shallow cracks on the surface. This invention focuses primarily on the implementation of false slits, controlling crack formation at predetermined slit locations to avoid or reduce random cracks in the panel, thereby improving its overall aesthetics and structural stability.

[0037] Finite Element Analysis (FEA) is a mathematical simulation technique used to predict how structures, solids, fluids, and other physical systems will respond under given operating conditions. In this invention, FEA is used to calculate the stress distribution of a concrete panel under different cut widths and depths, thereby guiding the design of appropriate cut schemes.

[0038] The Mohr-Coulomb model is a theoretical model describing the shear strength of soil or other materials. In this invention, this model is used to simulate the behavioral characteristics of subgrade / base layer soils, particularly in stress distribution analysis at cut joints in concrete panels. It helps calculate the shear and compressive strength of the soil to assess the impact of the cut joints on overall stability.

[0039] In this invention, the concrete panel is simulated as a linear elastic body to simplify the calculation process and quickly obtain the stress changes of the panel under different cutting conditions.

[0040] It should be noted that the cutting method and apparatus for concrete panels for waterway slope protection in this disclosure can be used in the field of waterway slope protection engineering technology to implement the cutting method for concrete panels for waterway slope protection, and can also be used in any field other than the field of waterway slope protection engineering technology to implement the cutting method for concrete panels for waterway slope protection. This disclosure does not limit the application field of the cutting method and apparatus for concrete panels for waterway slope protection.

[0041] It should be noted that in this disclosure, customer information is collected and analyzed, and users are provided with corresponding operation entry points to choose whether to agree to or reject the automated decision results; if the user chooses to reject, the process will proceed to the expert decision-making process.

[0042] The following embodiments of the present invention can be applied to various systems / applications / equipment for cutting joints in concrete panels for waterway slope protection. The present invention is applicable to the construction of waterway slope protection in waterway engineering, especially in scenarios where concrete panels are used as slope protection materials. Specifically, the present invention can be applied to new waterway slope protection projects or the repair and reinforcement of existing slope protection, with a particular focus on concrete slope protection structures that need to withstand hydraulic forces, temperature changes, and environmental pressures over a long period of time.

[0043] This invention, by introducing the finite element method, can more accurately analyze and predict the stress distribution of concrete panels under different cutting parameters, thereby determining the optimal cutting width and depth. By rationally setting the cuttings, the stress inside the concrete panel can be effectively released, avoiding irregular cracks caused by stress concentration, enhancing the overall structural stability and durability of the panel, helping to improve the stress state of the concrete panel, reducing the risk of damage caused by natural shrinkage or temperature changes, and extending the service life of the slope protection.

[0044] The present invention will now be described in detail with reference to various embodiments.

[0045] Example 1

[0046] According to an embodiment of the present invention, an embodiment of a method for cutting joints in a concrete panel for a waterway slope protection is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0047] Figure 1This is a flowchart of an optional method for cutting joints in a concrete panel for a waterway slope protection structure according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps S101 to S104, and each step is described in detail below.

[0048] In this embodiment, before determining the joint cutting scheme for the concrete panel of the waterway slope protection, it is necessary to obtain the basic parameters of the concrete panel and the subbase / base soil of the waterway slope protection, collect necessary location and panel parameter information, determine various working conditions and loads, and set the initial calculation conditions based on the material physical and mechanical parameter table. Optionally, before meshing the concrete panel to be poured and the subbase / base soil of the waterway slope protection, the following steps are also included: defining the area of ​​concrete to be poured above the slope surface in the target waterway project as the concrete panel of the waterway slope protection; obtaining the location information, range information, and panel parameters of the concrete panel; determining various working conditions and loads of the concrete panel based on the location information, range information, and panel parameters of the concrete panel; and determining the initial calculation parameters of the concrete panel and the subbase / base soil of the waterway slope protection according to the material physical and mechanical parameter table of the concrete panel.

[0049] First, in waterway slope protection engineering, the concrete area located above the slope that is about to be poured or has already been poured needs to be considered as the concrete panel to ensure that the model is consistent with the actual engineering environment. Next, the accurate location, size range, and relevant design parameters of the concrete panel, such as thickness and material type (e.g., C25 reinforced concrete), need to be collected. Location and size information can be obtained through engineering drawings, on-site measurements, or geographic information systems. Panel parameters can be determined with reference to engineering design standards and material test results. It should be noted that in waterway engineering, the panel parameters should also consider the influence of environmental factors such as water flow velocity and water level changes.

[0050] After clarifying the specific conditions of the concrete panel, the next step is to define the working conditions and load conditions of the model. Working conditions can include situations where the concrete panel is subjected to different ambient temperatures and water level changes, while loads encompass self-weight, water pressure, wind load, and potential wave impact. By simulating these complex working conditions, the impact of the cut joint on the stress distribution of the concrete panel can be comprehensively evaluated. It should be noted that in waterway slope protection projects, concrete panels may be subject to various external influences such as soil erosion, water flow impact, and temperature stress. Therefore, these factors must be fully considered when defining the working conditions to ensure that the calculation results reflect the stress state of the panel in actual use.

[0051] Furthermore, in this embodiment, the physical and mechanical parameters of the concrete panel (such as density, deformation modulus, Poisson's ratio, etc.) and the physical and mechanical parameters of the subgrade / base layer soil (such as density, deformation modulus, cohesion and friction angle in the Mohr-Coulomb model, etc.) are the basis of the finite element analysis. In this embodiment, the material models used (such as linear elastic body models and Mohr-Coulomb models) require these parameters to describe the material behavior under load. For example, the Poisson's ratio and deformation modulus of the concrete panel directly affect its stress calculation under cut conditions, while the cohesion and friction angle of the subgrade / base layer soil determine the soil's resistance to the deformation of the concrete panel.

[0052] Optionally, after determining the initial calculation parameters of the concrete panel and the subbase / base soil of the waterway slope protection, the method further includes: constructing a first finite element model corresponding to the concrete panel based on the location information, extent information, panel parameters, and initial calculation parameters of the concrete panel, wherein the first finite element model adopts a preset concrete linear elastic body model; and constructing a second finite element model corresponding to the subbase / base soil of the waterway slope protection based on the initial calculation parameters of the subbase / base soil, wherein the second finite element model adopts a preset Mohr-Coulomb model.

[0053] The construction of the first finite element model requires the following elements: location information, extent information, panel parameters, and initial calculation parameters of the concrete panel. Location and extent information ensure the model accurately reflects the layout and dimensions of the concrete panel in geographic space. Panel parameters, such as concrete grade, thickness, and reinforcement arrangement, define the basic properties of the structure. The model type includes a linear elastic body model, which assumes the material follows Hooke's law within its elastic limit, i.e., stress and strain are directly proportional. For concrete panels, this model simplifies the calculation process and allows for rapid assessment of stress distribution under different loads. In this embodiment, a pre-defined concrete linear elastic body model is used to construct the first finite element model to analyze the mechanical behavior of the concrete panel.

[0054] This embodiment also involves the initial calculation parameters of the subgrade / base layer soil for waterway slope protection, and the construction of a second finite element model corresponding to the subgrade / base layer soil of the waterway slope protection. The model type includes: using a preset Mohr-Coulomb model, where the Mohr-Coulomb model is a theoretical model used to describe the relationship between the shear strength of soil and other materials and the internal friction angle and cohesion. In waterway slope protection engineering, the physical and mechanical properties of the subgrade / base layer soil directly affect the stability of the concrete panel. Through the preset Mohr-Coulomb model, the second finite element model can more realistically simulate the mechanical properties of the soil, including its compressive strength, shear strength, and deformation capacity.

[0055] Step S101: Grid division is performed on the concrete panel to be poured for the channel slope protection and the subbase / base soil of the channel slope protection.

[0056] In this embodiment, step S101 divides the concrete panel to be poured for the channel slope protection and the subbase / base soil of the channel slope protection into a grid, transforming the continuous structure into a discrete model composed of a finite number of units (i.e., grids).

[0057] Optionally, the step of meshing the concrete panel to be poured on the channel slope and the subbase / base soil of the channel slope includes: using a first finite element model to mesh the concrete panel to be poured on the channel slope according to a first mesh spacing and a first predetermined node meshing strategy; and using a second finite element model to mesh the subbase / base soil of the channel slope according to a second mesh spacing and a second predetermined node meshing strategy.

[0058] The meshing of the concrete panel is based on its material properties and structural characteristics, using a linear elastic body model as the theoretical foundation. The selection of the first mesh spacing (which can be 0.1 meters in this embodiment) and the first predetermined node meshing strategy ensures that the model can accurately capture the stress changes inside the concrete panel, especially the stress concentration phenomenon at the cut joints. A smaller mesh spacing provides more refined results, while the node meshing strategy considers the geometry of the panel and the distribution of cut joints to improve computational efficiency and accuracy. It should be noted that when performing meshing, it is necessary to analyze the hardening process of the concrete, the location of the cut joints, and possible stress concentration areas. In practice, a coarse mesh can be performed first (pre-analysis) to assess the computational requirements, and then a fine mesh can be performed in key areas (such as cut edges and load concentration areas) to optimize the allocation of computational resources.

[0059] Subsequently, a second finite element model was used to mesh the subgrade / base layer soil of the waterway slope protection according to a second mesh spacing and a second predetermined node division strategy. The meshing of the subgrade / base layer soil utilized the Mohr-Coulomb model as the theoretical basis. The selection of the second mesh spacing (which can be 1 meter in this embodiment) and the second predetermined node division strategy simplifies the calculation process while maintaining sufficient accuracy to reflect the mechanical behavior of the soil. A larger mesh spacing is suitable for the analysis of subgrade / base layer soil because, compared to concrete panels, the stress changes in soil are relatively gradual, and overly fine meshes are not required to capture them. It should be noted that for soil materials, meshing must consider their nonlinear mechanical properties and interaction with the concrete panel. In some engineering projects, factors such as soil moisture content, density, and anisotropy may also affect the meshing strategy. The selection of the second mesh spacing should be based on the typical characteristics of the soil and the expected stress gradient to ensure the validity of the calculation results.

[0060] Step S102: Calculate the internal force parameters of the concrete panel after meshing using a finite element model.

[0061] After completing the meshing of the concrete panel and the subbase / base soil, this embodiment uses a finite element model to calculate the internal force parameters of the meshed concrete panel. Using finite element software, corresponding loads (such as self-weight and water pressure) and boundary conditions are applied to the established model. By solving the mechanical equations, the internal force parameters such as stress, strain and displacement of the concrete panel under different working conditions are obtained.

[0062] Step S103: Based on the internal force parameters of the concrete panel, calculate the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions.

[0063] Optionally, the step of calculating the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions based on the internal force parameters of the concrete panel includes: calculating the stress at the cut joint as 30 kPa and the stress at the non-cut joint as -86 kPa under the first working condition based on the internal force parameters of the concrete panel, wherein the first working condition includes a joint width of 10 mm and a joint depth of 30 mm; calculating the stress at the cut joint as 77 kPa and the stress at the non-cut joint as 79 kPa under the second working condition based on the internal force parameters of the concrete panel, wherein the second working condition includes a joint width of 10 mm and a joint depth of 50 mm; calculating the stress at the cut joint as 16 kPa and the stress at the non-cut joint as -71 kPa under the third working condition based on the internal force parameters of the concrete panel, wherein the third working condition includes a joint width of 5 mm and a joint depth of 30 mm; and calculating the stress at the cut joint as 35 kPa and the stress at the non-cut joint as -82 kPa under the fourth working condition based on the internal force parameters of the concrete panel, wherein the fourth working condition includes a joint width of 5 mm and a joint depth of 50 mm.

[0064] In the first working condition of this embodiment, the joint width can be set to 10 mm and the joint depth can be set to 30 mm. Based on the set joint cutting parameters and the internal force parameters of the concrete panel, the stress at the joint is calculated to be 30 kPa, and the stress at the non-joint area is -86 kPa. Negative values ​​represent compressive stress, and positive values ​​represent tensile stress. This means that tensile stress concentration occurs at the joint, while the non-joint area is subjected to compressive stress.

[0065] In the second working condition, the seam width can also be set to 10 mm, but the seam depth can be increased to 50 mm. Calculation results show that the stress at the cut increases to 77 kPa, while the stress at the non-cut seam is -79 kPa, demonstrating the significant effect of increasing the seam depth on the tensile stress at the cut seam.

[0066] In the third working condition, the seam width can be reduced to 5 mm, while the seam depth is restored to 30 mm. Calculations show that the stress at the cut is 16 kPa, and the stress at the non-cut seam is -71 kPa, demonstrating the influence of seam width variation on the stress at the cut seam.

[0067] Finally, under the fourth working condition, the joint width can be set to 5 mm and the joint depth to 50 mm. The calculation results show that the stress at the cut joint is 35 kPa and the stress at the non-cut joint is -82 kPa, further verifying the different effects of joint width and joint depth on the stress distribution of the concrete panel.

[0068] By calculating the stress at the cut and non-cut points under different working conditions, this embodiment can identify and quantify the degree of stress concentration. Reasonable cutting can effectively alleviate the stress concentration phenomenon inside the concrete panel and prevent the panel from cracking in non-preset locations.

[0069] Step S104: Based on the stress at the cut joints and non-cut joints of the concrete panel under various working conditions, determine the concrete slope protection jointing scheme, which includes: the timing of cutting, the width of cutting, and the depth of cutting.

[0070] Optionally, the steps for determining the jointing scheme of the concrete slope protection based on the stress at the cut joints and non-cut joints of the concrete panel under various working conditions include: a first jointing scheme in which a cut joint is set every 2.5m along the waterway direction, with a joint width of 10mm and a joint depth of 30mm, and a cut joint is set every 5m, with a joint width of 10mm and a joint depth of 50mm; and a second jointing scheme in which a longitudinal cut joint is set every 2.5m along the direction perpendicular to the waterway, with a joint width of 10mm and a joint depth of 30mm, and a cut joint is set every 5m, with a joint width of 10mm and a joint depth of 50mm.

[0071] The first jointing scheme employs a jointing strategy along the waterway direction. Specifically, a joint can be set every 2.5 meters, with a joint width of 10 mm and a joint depth of 30 mm. At every 5 meters, the joint depth increases to 50 mm, while the joint width remains unchanged. Stress calculations, particularly the analysis of tensile stress at the joints, are used to determine the optimal joint size, ensuring that the concrete panel can effectively guide shrinkage cracks at the joint locations without affecting the overall structure of the panel due to excessively deep or wide joints.

[0072] The second jointing scheme targets joints perpendicular to the waterway. This embodiment proposes a similar but independent strategy. Similarly, a longitudinal cut can be set every 2.5 meters, with a cut width and depth of 10 mm and 30 mm, respectively. At every 5 meters, the cut depth can be increased to 50 mm, while the cut width can remain at 10 mm. Also based on stress calculation results, the stress distribution and deformation mode that the concrete panel may suffer in the direction perpendicular to the waterway are taken into account to achieve orderly crack formation and structural durability.

[0073] By comparing stress calculation results under different working conditions, this embodiment reveals the direct relationship between the width and depth of the cut and the internal stress of the concrete panel. The presence of the cut effectively creates stress concentration within the panel, guiding crack formation and preventing random cracking of the concrete in non-cut areas, thus ensuring the aesthetics and functional integrity of the structure. Simultaneously, variations in cut width and depth significantly affect the stress level at the cut. Reasonable adjustment of these parameters can effectively optimize the stress distribution of the concrete panel, improving its durability and safety.

[0074] Optionally, after determining the jointing scheme for concrete slope protection based on the stress at the cut joints and non-cut joints of the concrete panel under various working conditions, the following steps are also included: after implementing the jointing scheme for concrete slope protection, cleaning debris from the joints; for cut joints with a width of 10mm and a depth of 30mm, not grouting, but simply keeping them clean; for cut joints with a width of 10mm and a depth of 50mm, grouting diluted asphalt or special sealant after drying.

[0075] In this embodiment, after implementing the concrete slope protection jointing scheme, it is necessary to ensure the cleanliness of the joints to prevent accumulated debris and dirt from affecting the guiding crack effect of the cuts, as well as the overall performance and durability of the slope protection structure. After the cutting operation, concrete debris, dust, or other impurities may remain in the cuts. These residues not only interfere with the guiding crack effect of the cuts but can also become a place for water accumulation, accelerating the corrosion and damage of the concrete. The cleaning work should be meticulous and timely to avoid debris solidifying in the joints, increasing the difficulty of cleaning. Cleaning control commands can be issued, and compressed air, small vacuum cleaners, or specialized joint cleaning tools can be used to perform the cleaning task, ensuring that there are no residues inside the cuts, improving the guiding crack effect of the cuts, and enhancing the overall aesthetics of the slope protection.

[0076] For shallow cuts of 10mm width and 30mm depth, no grouting is required; simply keep them clean. This is because such shallow cuts aim to guide microscopic cracks on the concrete surface, rather than becoming channels for water penetration or impurity accumulation. Therefore, after implementing the jointing scheme, only ensuring the cleanliness of the cut interior is necessary; no grouting is required to avoid material filling affecting the cut's guiding function. Maintaining the cleanliness of these shallow cuts effectively prevents further expansion of surface cracks while reducing maintenance costs.

[0077] For cuts up to 50 mm deep, their function, besides guiding the crack, is to provide a sufficiently deep channel to isolate different areas of the concrete panel, preventing irregular stress transmission and protecting the concrete structure from external environmental factors (such as moisture and freeze-thaw cycles). Therefore, after ensuring the inside of the cut is completely dry, diluted asphalt or a specialized sealant can be used for injection to seal the cut and enhance its protective and isolating effects. Diluted asphalt and specialized sealants, due to their excellent adhesion and elasticity, can adapt to minor deformations of the concrete panel and form an effective waterproof layer after drying. The drying treatment before injection avoids the influence of moisture on the performance of the injection material, ensuring long-term stability of the seal.

[0078] Through the above steps, the concrete panel to be poured for the channel slope protection and the subbase / base soil of the channel slope protection can be meshed; the internal force parameters of the meshed concrete panel can be calculated using a finite element model; based on the internal force parameters of the concrete panel, the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions can be calculated; according to the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions, the jointing scheme of the concrete slope protection can be determined, wherein the jointing scheme of the concrete slope protection includes: the timing of jointing, the width of jointing, and the depth of jointing. In this embodiment, a finite element model can be introduced to more accurately analyze the stress distribution of the concrete panel under different cutting parameters, thereby determining the optimal concrete slope protection jointing scheme. By reasonably setting the cuttings, the stress inside the concrete panel can be effectively released, avoiding irregular cracks caused by stress concentration, enhancing the overall structural stability and durability of the panel, helping to improve the stress state of the concrete panel, and reducing the risk of damage caused by natural shrinkage or temperature changes. This solves the technical problem in related technologies where the cutting method for concrete panels of waterway slope protection in waterway engineering specifications only provides a basic cutting range and cannot provide a precise panel cutting scheme, which easily leads to cracks in the concrete panel.

[0079] The following describes in detail another optional implementation method.

[0080] Compared to existing waterway engineering specifications, which do not explicitly provide principles and methods for cutting joints in concrete panels and lack quantitative calculation methods, this invention addresses the drawback of not knowing how to cut joints to maximize structural stress when the panel size is large. This invention proposes a method for cutting joints in concrete panels for waterway slope protection. It uses finite element analysis to analyze the influence of joint width and depth on the stress of the concrete panel and proposes a reasonable joint cutting scheme for concrete panels for waterway slope protection.

[0081] In a first aspect, the present invention proposes a method for cutting joints in concrete panels for waterway slope protection, comprising the following steps:

[0082] Step S1: Determine the calculation conditions and loads for the concrete panel.

[0083] In waterway engineering, the concrete panel is located above the slope and is equipped with drainage pipes to balance water pressure. It only bears its own weight. Calculations are made for different working conditions and load parameters.

[0084] Step S2: Determine the calculation parameters based on the physical and mechanical properties of the materials.

[0085] Based on the engineering geological survey report, the physical and mechanical parameters of the concrete subgrade were determined, as shown in Table 1 below. In the calculations, to disregard slope deformation caused by the slope's own weight, the density of the subgrade / base layer soil (i.e., 2050 kg / m³) was used. 3 Let's take a smaller value, say 1 kg / m³. 3 .

[0086] According to the "Code for Design of Concrete Structures for Water Transport Engineering" (JTS151-2011), the physical and mechanical properties of concrete panels are shown in Table 1.

[0087] Table 1 Material Physical and Mechanical Parameters

[0088]

[0089] Step S3: Establish a finite element model, set parameters, and perform calculations.

[0090] Figure 2 This is a schematic diagram of an optional finite element model according to an embodiment of the present invention, such as... Figure 2 As shown, a finite element model is established and a finite element mesh is generated.

[0091] (1) A finite element model was established using ADINA software. The concrete panel was modeled as a C25 concrete linear elastic body with a thickness of 200mm, a cut width of 10mm, and a cut depth of 30mm. A Mohr-Coulomb model was established for the subbase / base soil.

[0092] (2) Applying load: Apply the self-weight load to the concrete panel of the waterway. This load is automatically applied by the software.

[0093] (3) Divide the finite element mesh. The mesh spacing of the concrete panel is 0.1m, and the 8-node element type is adopted. No node bonding is considered between the concrete panel and the subbase / base soil. The mesh spacing of the subbase / base soil is 1m, and the 8-node element type is adopted. No node bonding is considered between the concrete panel and the subbase / base soil.

[0094] (4) Calculate internal forces using finite element software.

[0095] Step S4: Calculate various operating conditions and analyze the results.

[0096] (1) The stress at the cut joint and the stress at the non-cut joint of the concrete panel were calculated according to four working conditions: cut joint width 10mm and cut joint depth 30mm, cut joint width 10mm and cut joint depth 50mm, cut joint width 5mm and cut joint depth 30mm, and cut joint width 5mm and cut joint depth 50mm. See Table 2. Figure 3 This is a stress cloud diagram of an optional slit panel according to an embodiment of the present invention, such as... Figure 3 As shown, the colors correspond to the stress parameters at different locations on the cut panel.

[0097] Table 2 Summary of Calculation Results

[0098]

[0099] Note: A negative sign indicates compressive stress, and a positive sign indicates tensile stress.

[0100] (2) Conduct results analysis:

[0101] 1) The stress at the cut is positive, bearing tensile stress; the stress at the non-cut is negative, bearing compressive stress. That is, after the concrete panel is cut, stress concentration is formed at the cut, which better protects the concrete panel structure.

[0102] 2) From working conditions 1 and 2, under the same joint width, the deeper the joint, the greater the tensile stress at the cut, and the easier it is to detach. From working conditions 3 and 4, under the same joint width, the deeper the joint, the greater the tensile stress at the cut, and the easier it is to detach. This indicates that the setting of the cutting joint can release the stress of the concrete slab to a certain extent, causing it to crack regularly at the preset position, avoiding random cracks from affecting the structural aesthetics and durability.

[0103] 3) From working conditions 1 and 3, under the same seam depth, the larger the seam width, the greater the tensile stress at the cut, which is about twice as strong, and the easier it is to detach; from working conditions 2 and 4, under the same seam depth, the larger the seam width, the greater the tensile stress at the cut, which is about twice as strong, and the easier it is to detach.

[0104] 4) The size and depth of the cut have little effect on the stress in the non-cut areas.

[0105] 5) The design value of the tensile strength of C25 concrete is 1.27 MPa = 1270 kPa; the joint width is 10 mm and the joint depth is 50 mm, and its tensile stress is 77 / 1270 = 6.06% of the design value. This is much smaller than the design values ​​of tensile and compressive stress of concrete.

[0106] Step S5: Design the joints for the concrete panel.

[0107] Based on the finite element stress calculation results of the concrete joints and with reference to relevant highway and building specifications, the concrete slope protection joint settings are determined as follows: along the waterway direction, a joint is set every 2.5m with a joint width of 10mm and a joint depth of 30mm, and a joint is set every 5m with a joint width of 10mm and a joint depth of 50mm; perpendicular to the waterway direction, a longitudinal joint is set every 2.5m with a joint width of 10mm and a joint depth of 30mm, and a joint is set every 5m with a joint width of 10mm and a joint depth of 50mm.

[0108] Step S6: Timing and precautions for cutting joints in concrete panels.

[0109] Cutting joints in concrete panels too early can easily lead to chipping, while cutting them too late can easily cause cracking. The key is to cut between the initial and final setting of the concrete (for example, within 24-48 hours after pouring, depending on the temperature). The ideal time to cut is when the concrete does not stick to the saw blade and the joint does not chip (for example, this can be determined by a finger pressure test: pressing a finger on the concrete surface leaves no obvious marks, and scratching with a fingernail feels hard).

[0110] Post-cut treatment: Clean the debris from the crack after cutting. For cuts with a width of 10mm and a depth of 30mm, do not fill with grout, just keep them clean. For cuts with a width of 10mm and a depth of 50mm, fill with diluted asphalt or special sealant after drying to avoid debris filling and affecting the crack guiding effect.

[0111] In one optional implementation, the physical and mechanical properties of the subgrade / base layer soil are determined by the geological survey report, while the physical and mechanical properties of the concrete panel are determined by the "Code for Design of Concrete Structures for Waterway Engineering" (JTS151-2011). When using finite element method (FEM) software for calculation, a linear elastic body model is used for the concrete panel, and a Mohr-Coulomb model is used for the subgrade / base layer soil. Multi-condition calculations are performed on the joint width and depth, and comparative analyses are conducted. Based on the FEM stress calculation results, the joint depth and width are determined. The joint is cut "after initial setting and before final setting"; shallow joints are not grouted, and deep joints must be sealed.

[0112] Through the above embodiments, the finite element method can be used to analyze the influence of the cut width and depth on the stress of the concrete panel. By setting the cuts reasonably, the stress inside the concrete panel can be effectively released, avoiding irregular cracks caused by stress concentration, and enhancing the overall structural stability and durability of the panel. At the same time, a reasonable cut scheme for the concrete panel of the waterway slope protection can be quantitatively determined, which helps to improve the stress state of the concrete panel, reduce the risk of damage caused by natural shrinkage or temperature changes, and extend the service life of the waterway slope protection.

[0113] The following is a detailed description with reference to another embodiment.

[0114] Example 2

[0115] The cutting device for a concrete panel for a waterway slope protection provided in this embodiment includes multiple implementation units, each of which corresponds to a specific implementation step in Embodiment 1 above.

[0116] Figure 4 This is a schematic diagram of an optional cutting device for a concrete panel of a waterway slope protection structure according to an embodiment of the present invention, as shown below. Figure 2 As shown, the joint cutting device for the concrete panel of the waterway slope protection can include: a grid division unit 41, an internal force parameter calculation unit 42, a joint cutting stress calculation unit 43, and a slope protection jointing scheme determination unit 44.

[0117] Among them, the grid division unit 41 is used to divide the concrete panel to be poured on the waterway slope and the subbase / base soil of the waterway slope into grids.

[0118] Internal force parameter calculation unit 42 is used to calculate the internal force parameters of the concrete panel after meshing using a finite element model.

[0119] The cut stress calculation unit 43 is used to calculate the stress at the cut and non-cut of the concrete panel under various working conditions based on the internal force parameters of the concrete panel.

[0120] The slope protection jointing scheme determination unit 44 is used to determine the concrete slope protection jointing scheme based on the stress at the joint and non-joint of the concrete panel under various working conditions. The concrete slope protection jointing scheme includes: jointing timing, jointing width, and jointing depth.

[0121] The aforementioned joint cutting device for the concrete panel of the waterway slope protection can divide the concrete panel to be poured and the subbase / base soil of the waterway slope protection into a grid using the grid division unit 41. The internal force parameter calculation unit 42 uses a finite element model to calculate the internal force parameters of the concrete panel after grid division. Based on the internal force parameters of the concrete panel, the joint stress calculation unit 43 calculates the stress at the joint and non-joint points of the concrete panel under various working conditions. The jointing scheme determination unit 44 determines the jointing scheme of the concrete slope protection based on the stress at the joint and non-joint points of the concrete panel under various working conditions. The jointing scheme of the concrete slope protection includes: jointing timing, jointing width, and jointing depth. In this embodiment, a finite element model can be introduced to more accurately analyze the stress distribution of the concrete panel under different cutting parameters, thereby determining the optimal concrete slope protection jointing scheme. By reasonably setting the cuttings, the stress inside the concrete panel can be effectively released, avoiding irregular cracks caused by stress concentration, enhancing the overall structural stability and durability of the panel, helping to improve the stress state of the concrete panel, and reducing the risk of damage caused by natural shrinkage or temperature changes. This solves the technical problem in related technologies where the cutting method for concrete panels of waterway slope protection in waterway engineering specifications only provides a basic cutting range and cannot provide a precise panel cutting scheme, which easily leads to cracks in the concrete panel.

[0122] Optionally, the cutting device for the concrete panel of the waterway slope protection also includes: a panel range definition unit, used to define the range of concrete to be poured above the slope surface in the target waterway project as the concrete panel of the waterway slope protection before meshing the concrete panel to be poured and the subbase / base soil of the waterway slope protection; to obtain the location information, range information and panel parameters of the concrete panel; a panel working condition determination unit, used to determine various working conditions and loads of the concrete panel based on the location information, range information and panel parameters of the concrete panel; and a panel initial calculation parameter determination unit, used to determine the initial calculation parameters of the concrete panel of the waterway slope protection and the subbase / base soil of the waterway slope protection according to the material physical and mechanical parameter table of the concrete panel.

[0123] Optionally, the joint cutting device for the concrete panel of the waterway slope protection also includes: a first model building unit, used to construct a first finite element model corresponding to the concrete panel after determining the initial calculation parameters of the concrete panel and the subbase / base soil of the waterway slope protection, based on the location information, range information, panel parameters and the initial calculation parameters of the concrete panel, wherein the first finite element model adopts a preset concrete linear elastic body model; and a second model building unit, used to construct a second finite element model corresponding to the subbase / base soil of the waterway slope protection based on the initial calculation parameters of the subbase / base soil, wherein the second finite element model adopts a preset Mohr-Coulomb model.

[0124] Optionally, the meshing unit includes: a first meshing module, used to mesh the concrete panel to be poured on the channel slope using a first finite element model according to a first mesh spacing and a first predetermined node meshing strategy; and a second meshing module, used to mesh the subbase / base soil of the channel slope using a second finite element model according to a second mesh spacing and a second predetermined node meshing strategy.

[0125] Optionally, the joint stress calculation unit includes: a first working condition joint stress calculation module, used to calculate the stress at the joint as 30 kPa and the stress at the non-joint as -86 kPa based on the internal force parameters of the concrete panel, wherein the first working condition includes a joint width of 10 mm and a joint depth of 30 mm; and a second working condition joint stress calculation module, used to calculate the stress at the joint as 77 kPa and the stress at the non-joint as 79 kPa based on the internal force parameters of the concrete panel, wherein the second working condition includes a joint width of 10 mm. The third working condition includes a 5mm wide and 30mm deep joint. The fourth working condition includes a 5mm wide and 50mm deep joint. The third working condition is calculated based on the internal force parameters of the concrete panel, determining the stress at the joint to be 16kPa and the stress at the non-joint joint to be -71kPa.

[0126] Optionally, the slope protection jointing scheme determination unit includes: a first jointing scheme in which a cut is made every 2.5m along the waterway direction, with a cut width of 10mm and a cut depth of 30mm, and a cut is made every 5m, with a cut width of 10mm and a cut depth of 50mm; and a second jointing scheme in which a longitudinal cut is made every 2.5m along the perpendicular waterway direction, with a cut width of 10mm and a cut depth of 30mm, and a cut is made every 5m, with a cut width of 10mm and a cut depth of 50mm.

[0127] Optionally, the joint cutting device for the concrete panel of the waterway slope protection also includes: a debris cleaning unit, used to clean debris inside the joint after determining the jointing scheme of the concrete slope protection according to the stress at the joint and non-joint points of the concrete panel under various working conditions and after the jointing scheme of the concrete slope protection is implemented; and a sealing unit, used to keep the joints clean without grouting for joints with a width of 10mm and a depth of 30mm; and to grout diluted asphalt or special sealant after the joints with a width of 10mm and a depth of 50mm, after they have dried.

[0128] The cutting device for the concrete panel of the waterway slope protection can also include a processor and a memory. The grid division unit 41, the internal force parameter calculation unit 42, the cutting stress calculation unit 43, the slope protection jointing scheme determination unit 44, etc. are all stored in the memory as program units. The processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

[0129] The aforementioned processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and the cutting scheme for the concrete panel of the waterway slope protection can be determined by adjusting the kernel parameters.

[0130] The aforementioned memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0131] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored computer program, wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute the cutting method of the concrete panel for waterway slope protection as described in any of the above embodiments.

[0132] According to another aspect of the present invention, an electronic device is also provided, including one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the cutting method for the concrete panel of the waterway slope protection as described in any of the above embodiments.

[0133] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the cutting method for the concrete panel of the waterway slope protection described in various embodiments of this application.

[0134] This application also provides a computer program product, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the cutting method for the concrete panel of the waterway slope protection described in various embodiments of this application.

[0135] Figure 5 This is a hardware structure block diagram of an electronic device (or mobile device) for performing a method of cutting joints in a concrete panel for waterway slope protection, according to an embodiment of the present invention. Figure 5 As shown, an electronic device may include one or more ( Figure 5The processor (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and memory 504 for storing data are illustrated using 502a, 502b, ..., 502n. In addition, it may include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a keyboard, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the electronic device described above. For example, the electronic device may also include components that are more... Figure 5 The more or fewer components shown, or having the same Figure 5 The different configurations shown.

[0136] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0137] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0138] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0139] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0140] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0141] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0142] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for cutting joints in a concrete panel for waterway slope protection, characterized in that, include: The concrete panels to be poured for the channel slope protection and the subbase / base soil of the channel slope protection are divided into grids. The internal force parameters of the concrete panel after meshing were calculated using the finite element model. Based on the internal force parameters of the concrete panel, the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions are calculated. Based on the stress at the cut joints and non-cut joints of the concrete panel under various working conditions, a concrete slope protection jointing scheme is determined, wherein the concrete slope protection jointing scheme includes: the timing of cutting joints, the width of cutting joints, and the depth of cutting joints.

2. The slit-cutting method according to claim 1, characterized in that, Before meshing the concrete panels to be poured for the channel slope protection and the subgrade / base soil of the channel slope protection, the following steps are also included: The concrete panel of the waterway slope protection is defined as the area of ​​concrete to be poured above the slope in the target waterway project. Obtain the location information, extent information, and panel parameters of the concrete panel; Based on the location information, extent information, and panel parameters of the concrete panel, various working conditions and loads of the concrete panel are determined. Based on the material physical and mechanical parameters table of the concrete panel, the initial calculation parameters of the concrete panel of the waterway slope protection and the subbase / base soil of the waterway slope protection are determined.

3. The slit-cutting method according to claim 2, characterized in that, After determining the initial calculation parameters for the concrete panels and the subbase / base soil of the waterway slope protection, the following steps are also included: Based on the location information, range information, panel parameters, and initial calculation parameters of the concrete panel, a first finite element model corresponding to the concrete panel is constructed, wherein the first finite element model adopts a preset concrete linear elastic body model. Based on the initial calculation parameters of the subgrade / base soil of the waterway slope protection, a second finite element model corresponding to the subgrade / base soil of the waterway slope protection is constructed, wherein the second finite element model adopts the preset Mohr-Coulomb model.

4. The slit-cutting method according to claim 1, characterized in that, The steps for gridding the concrete panels to be poured on the channel slope and the subgrade / base soil of the channel slope include: The first finite element model is used to mesh the concrete panel to be poured on the waterway slope protection according to the first mesh spacing and the first predetermined node meshing strategy. The second finite element model was used to divide the subbase / base soil of the waterway slope protection into grids according to the second grid spacing and the second predetermined node division strategy.

5. The slit-cutting method according to claim 1, characterized in that, Based on the internal force parameters of the concrete panel, the steps for calculating the stress at the cut joint and the stress at the non-cut joint of the concrete panel under various working conditions include: Based on the internal force parameters of the concrete panel, the stress at the cut joint under the first working condition is calculated to be 30 kPa, and the stress at the non-cut joint is -86 kPa. The first working condition includes a joint width of 10 mm and a joint depth of 30 mm. Based on the internal force parameters of the concrete panel, the stress at the cut joint under the second working condition is calculated to be 77 kPa, and the stress at the non-cut joint is 79 kPa. The second working condition includes a joint width of 10 mm and a joint depth of 50 mm. Based on the internal force parameters of the concrete panel, the stress at the cut joint under the third working condition is calculated to be 16 kPa, and the stress at the non-cut joint is -71 kPa. The third working condition includes a joint width of 5 mm and a joint depth of 30 mm. Based on the internal force parameters of the concrete panel, the stress at the cut joint under the fourth working condition is calculated to be 35 kPa, and the stress at the non-cut joint is -82 kPa. The fourth working condition includes a joint width of 5 mm and a joint depth of 50 mm.

6. The slit-cutting method according to claim 1, characterized in that, The steps for determining the jointing scheme for concrete slope protection based on the stress at the cut joints and non-cut joints of the concrete panel under various working conditions include: The first jointing scheme involves setting a joint every 2.5m along the waterway direction, with a joint width of 10mm and a joint depth of 30mm, and setting a joint every 5m, with a joint width of 10mm and a joint depth of 50mm. The first jointing scheme involves setting a longitudinal joint every 2.5m along the direction perpendicular to the waterway, with a joint width of 10mm and a joint depth of 30mm, and setting a joint every 5m, with a joint width of 10mm and a joint depth of 50mm.

7. The slit-cutting method according to claim 6, characterized in that, After determining the jointing scheme for concrete slope protection based on the stress at the cut joints and non-cut joints of the concrete panel under various working conditions, the following steps are also included: After completing the concrete slope protection jointing scheme, clean the debris from the joints; For cuts 10mm wide and 30mm deep, do not fill with grout; simply keep them clean. For cuts with a width of 10mm and a depth of 50mm, dilute asphalt or special sealant should be injected after drying.

8. A cutting device for concrete panels used for waterway slope protection, characterized in that, include: The grid division unit is used to divide the concrete panel to be poured on the waterway slope and the subbase / base soil of the waterway slope into grids. The internal force parameter calculation unit is used to calculate the internal force parameters of the concrete panel after meshing using the finite element model. The joint stress calculation unit is used to calculate the stress at the joint and non-joint of the concrete panel under various working conditions based on the internal force parameters of the concrete panel. The slope protection jointing scheme determination unit is used to determine the concrete slope protection jointing scheme based on the stress at the joints and non-joints of the concrete panel under various working conditions. The concrete slope protection jointing scheme includes: jointing timing, jointing width, and jointing depth.

9. An electronic device, characterized in that, It includes one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the cutting method for the concrete panel of the waterway slope protection as described in any one of claims 1 to 7.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the cutting method for the concrete panel of the waterway slope protection as described in any one of claims 1 to 7.

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