A method for determining the location of anti-slide pile reinforcement

Abstract

This invention provides a method for determining the location of anti-slide pile reinforcement, relating to the field of slope reinforcement technology. The method proposed in this invention provides a unified and reliable approach and process for selecting reasonable reinforcement locations for anti-slide piles, avoiding arbitrariness in location selection and ensuring that the reinforcement locations are scientifically sound. The method provided by this invention ensures that the potential sliding surfaces of both the upper and lower slopes reach the designed target safety factor, guaranteeing the reliability of the reinforcement.

Description

Technical Field

[0001] This invention relates to the field of slope reinforcement technology, and more specifically, to a method for determining the location of anti-slide pile reinforcement. Background Technology

[0002] Anti-slide piles are a commonly used support measure in slope and landslide reinforcement projects. The placement of anti-slide piles is a key design consideration, directly impacting the success of the reinforcement project. If the anti-slide piles are placed too close to the shear outlet, the slope above the piles may fail to reach the target safety factor, leading to failure along the potential sliding surface of the upper slope. Conversely, if the anti-slide piles are placed too close to the rear edge tensile crack, the slope below the piles may also fail to reach the target safety factor, resulting in failure along the potential sliding surface of the lower slope.

[0003] In traditional design, the location of anti-slide piles is usually determined by the designer based on personal experience, without a unified standard. The locations of anti-slide piles determined by different designers vary greatly and are even unreliable. Summary of the Invention

[0004] The objectives of this invention include, for example, providing a method for determining the reinforcement location of anti-slide piles. This method uses a theoretical approach to determine the reinforcement location of anti-slide piles, providing a unified and reliable practice and process for selecting reasonable reinforcement locations for anti-slide piles. This avoids the arbitrariness of designers selecting reinforcement locations based on personal experience, reduces the differences in the determination of anti-slide pile locations by designers, and ensures that the reinforcement locations of anti-slide piles are scientifically reasonable and reliable.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a method for determining the location of anti-slide pile reinforcement, comprising:

[0007] Obtain the analysis parameters of the slope and the target safety factor of the slope;

[0008] Input the analysis parameters into the slope stability analysis computer to prepare for the overall slope stability analysis. The analysis parameters include the slope's geometric parameters and material parameters.

[0009] The overall stability of the slope is analyzed to obtain the overall stability analysis results, which include the overall safety factor of the slope, the overall potential slip surface, the shear exit location, and the location of the trailing edge tensile crack.

[0010] Determine whether the overall safety factor of the slope is greater than the target safety factor. If the target safety factor is greater than the overall safety factor, reinforce the slope with a single row of anti-slide piles.

[0011] Starting from the shear outlet, with the horizontal distance between the single row of anti-slide piles and the shear outlet as the abscissa and the slope safety factor as the ordinate, the stability of the upper slope is analyzed for different positions of the single row of anti-slide piles to obtain the corresponding upper slope safety factor, thus obtaining the upper slope stability line. Similarly, the stability of the lower slope is obtained by analyzing the stability of the lower slope for different positions of the single row of anti-slide piles, thus obtaining the lower slope stability line.

[0012] The maximum safety factor that can be achieved when using single-row anti-slide piles for reinforcement is determined by selecting the intersection of the upper slope stability line and the lower slope stability line.

[0013] Determine whether the maximum safety factor is greater than the target safety factor. If the maximum safety factor is greater than the target safety factor, determine the target safety factor line based on the target safety factor. Compare the target safety factor line with the upper slope stability line at point A. Determine the lower limit abscissa of the anti-slide pile layout based on point A. The target safety factor line intersects the lower slope stability line at point B. Determine the upper limit abscissa of the anti-slide pile layout based on point B. The coordinate range between the lower limit abscissa and the upper limit abscissa of the anti-slide pile layout is the reasonable range for the anti-slide pile layout.

[0014] In an optional implementation, the step of determining whether the target safety factor is greater than the overall safety factor further includes:

[0015] If the overall safety factor is greater than the target safety factor, then there is no need to reinforce the slope.

[0016] In an optional implementation, the method further includes: inputting the abscissa corresponding to a single row of anti-slide piles into a slope stability analysis computer to solve for the stability of the upper slope and the stability of the lower slope, and obtaining the safety factor of the upper slope and the safety factor of the lower slope when the anti-slide piles are set in different positions.

[0017] In an optional implementation, the stability lines of the upper and lower slopes are drawn based on the solutions of the safety factors of the upper and lower slopes.

[0018] In an optional implementation, the number of single-row anti-slide piles at different locations and the abscissa at different locations are determined by combining the slip surface length, geological conditions and slope set parameters during slope stability analysis.

[0019] In an optional implementation, if the maximum safety factor is less than the target safety factor, other methods are used for slope reinforcement.

[0020] The beneficial effects of the embodiments of the present invention include, for example, that the method for determining the reinforcement location of anti-slide piles provided by the embodiments of the present invention provides a unified and reliable approach and process for selecting reasonable reinforcement locations of anti-slide piles through a theoretical determination of the reinforcement location, avoiding the need for designers to determine values ​​based on personal experience, reducing the differences in the determination of anti-slide pile locations by designers, and ensuring that the reinforcement location of anti-slide piles is scientific and reasonable. The method for determining the reinforcement location of anti-slide piles proposed in the present invention can ensure that the setting location of anti-slide piles on slopes is more reasonable, ensuring that the potential sliding surfaces of both the upper and lower slopes reach the designed target safety factor, and ensuring the reliability of the anti-slide piles in slope reinforcement. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic flowchart illustrating a method for determining the location of anti-slide pile reinforcement according to an embodiment of the present invention;

[0023] Figure 2 A curve showing the relationship between the slope safety factor of anti-slide piles and the location of anti-slide piles is provided in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of a slope body equipped with anti-slide piles, provided as an embodiment of the present invention.

[0025] Icons: 1-Slope; 11-Lower slope; 12-Upper slope; 13-Shear outlet; 14-Rear edge tensile crack; 15-Slip surface; 151-Potential slip surface of the lower slope; 152-Potential slip surface of the upper slope; 2-Anti-slip pile. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0032] Anti-slide piles are a commonly used support measure in slope and landslide reinforcement projects. The placement of anti-slide piles is a key design consideration, directly impacting the success of the reinforcement project. If the anti-slide piles are placed too close to the shear outlet, the slope above the piles may fail to reach the target safety factor, leading to failure along the potential sliding surface of the upper slope. Conversely, if the anti-slide piles are placed too close to the rear edge tensile crack, the slope below the piles may also fail to reach the target safety factor, resulting in failure along the potential sliding surface of the lower slope.

[0033] In traditional design, the location of anti-slide piles is usually determined by the designer based on personal experience, without a unified standard. The locations of anti-slide piles determined by different designers vary greatly and are even unreliable.

[0034] To address the aforementioned problems, this invention provides a method for determining the reinforcement location of anti-slide piles. This method uses a theoretical approach to determine the reinforcement location of anti-slide piles, providing a unified and reliable practice and process for selecting reasonable reinforcement locations for anti-slide piles. This avoids designers relying on personal experience to determine values, reduces the differences in the locations of anti-slide piles determined by designers, and ensures the reliability of the designed anti-slide pile locations on slopes.

[0035] The following detailed description, in conjunction with the accompanying drawings, outlines the specific steps of a method for determining the location of anti-slide pile reinforcement provided by this invention, and the corresponding technical effects it brings.

[0036] Please refer to Figures 1-3 The method for determining the reinforcement location of the anti-slide pile 2 provided in this embodiment of the invention includes:

[0037] S100: Overall stability analysis of slope 1:

[0038] In this embodiment, before the step of obtaining analysis data for the overall stability analysis of slope 1, the method further includes obtaining the analysis parameters and target safety factor of slope 1. The target safety factor of slope 1 is determined based on the safety level of the engineering design. The analysis parameters are input into the slope 1 stability analysis computer to prepare for the overall stability analysis of slope 1. Specifically, the aforementioned analysis parameters include the geometric parameters and material parameters of slope 1.

[0039] Please refer to Figure 3 Then, based on the geometric and material parameters of slope 1, the computer for slope 1 stability analysis is prepared to perform an overall stability analysis of slope 1 to obtain the overall stability analysis results of slope 1. These results include the overall safety factor F of slope 1. sc The location of the shear outlet 13 and the location of the rear edge tensile crack 14 are specified. It should be noted that if the anti-slide pile 2 is placed too close to the shear outlet 13, although it enhances the stability of the lower slope 11, it may cause the upper slope 12 of the anti-slide pile 2 to fail to reach the target safety factor, resulting in failure along the potential sliding surface 152 of the upper slope. Conversely, if the anti-slide pile 2 is placed too close to the rear edge tensile crack 14, it may cause the lower slope 11 of the anti-slide pile 2 to fail to reach the target safety factor, resulting in failure along the potential sliding surface 151 of the lower slope. Therefore, it is necessary to select an appropriate location between the shear outlet 13 and the rear edge tensile crack 14 to install the anti-slide pile 2 to achieve optimal stability for the entire slope 1.

[0040] It is easy to understand that the overall safety factor F of slope 1 sc This can be understood as the safety factor of slope 1 when no reinforcement measures are taken.

[0041] S200: Determine whether the stability of slope 1 meets the requirements.

[0042] Following the step of obtaining analytical data through overall stability analysis of slope 1, the next step is to determine the overall safety factor F of slope 1. sc Is it greater than the target safety factor F of slope 1? st It's easy to understand that the target safety factor F for slope 1 is... stThis can be understood as the required safety factor for slope 1. When the overall safety factor F sc Greater than the target safety factor F st If the target safety factor F is [value missing], then slope 1 does not need to be reinforced. Conversely, if the target safety factor F is [value missing], then slope 1 does not need to be reinforced. st Greater than the overall safety factor F sc If so, a single row of anti-slide piles 2 is needed to reinforce slope 1.

[0043] Before proceeding to the step of analyzing the safety factors of the upper slope 12 and the lower slope 11 when the single row of anti-slide piles 2 are set at different positions between the shear outlet 13 and the rear edge tensile crack 14, the method further includes inputting the abscissa corresponding to different positions of the single row of anti-slide piles 2 into the slope 1 stability analysis computer to solve for the stability of the upper slope 12 and the lower slope 11, and obtaining the safety factors of the upper slope 12 and the lower slope 11 when the anti-slide piles 2 are set at different positions.

[0044] S300: Analysis of the safety factors of the upper and lower slopes:

[0045] Next, we proceed to the step of analyzing the safety factor of the upper slope 12 and the safety factor of the lower slope 11 when the single row of anti-slide piles 2 are set at different positions between the shear outlet 13 and the rear edge tensile crack 14.

[0046] S400: Draw the upper slope stability line and the lower slope stability line:

[0047] In a straightforward manner, starting from the shear outlet 13, the horizontal distance between the single row of anti-slide piles 2 and the shear outlet 13 is used as the abscissa, and the safety factor of slope 1 is used as the ordinate. For different positions of the single row of anti-slide piles 2, the stability of the upper slope 12 is analyzed to obtain the corresponding safety factor of the upper slope 12. Using the horizontal distance between the single row of anti-slide piles 2 and the shear outlet 13 as the abscissa and the safety factor of the upper slope 12 as the ordinate, the stability line of the upper slope is obtained. Similarly, by analyzing the stability of the lower slope 11, the safety factor of the lower slope 11 is obtained for different positions of the single row of anti-slide piles 2. Using the horizontal distance between the single row of anti-slide piles 2 and the shear outlet 13 as the abscissa and the safety factor of the lower slope 11 as the ordinate, the stability line of the lower slope is obtained.

[0048] In the stability analysis of slope 1, the length of the sliding surface 15, geological conditions, and geometric parameters of slope 1 are combined to determine the number of different positions of the single row of anti-slide piles 2, as well as the abscissa of the different positions of the single row of anti-slide piles 2.

[0049] S500: The maximum safety factor F that can be achieved when using a single row of anti-slide piles for reinforcement, determined by selecting the intersection of the upper slope stability line and the lower slope stability line.sl .

[0050] It is understandable that the stability line of the upper slope of the single-row anti-slide pile 2 is minimum at the shear outlet 13. As the single-row anti-slide pile 2 gradually approaches the rear edge tensile crack 14, the stability line of the upper slope gradually increases, meaning the stability of the upper slope 12 gradually increases. The stability line of the lower slope of the single-row anti-slide pile 2 is minimum at the rear edge tensile crack 14. Furthermore, as the single-row anti-slide pile 2 gradually moves away from the rear edge tensile crack 14 and gradually approaches the shear outlet 13, the stability of the lower slope 11 gradually increases. Therefore, the stability lines of the upper and lower slopes intersect within the abscissa range of the shear outlet 13 and the rear edge tensile crack 14. This intersection point represents the maximum safety factor that the stability of both the upper slope 12 and the lower slope 11 can simultaneously achieve when reinforced with the single-row anti-slide pile 2, denoted as the maximum safety factor F of the single-row anti-slide pile 2 reinforcement. sl .

[0051] The maximum safety factor F also needs to be determined. sl Is it greater than the target safety factor F? st In other words, to determine whether slope 1 can be reinforced with single-row anti-slide piles 2, when the maximum safety factor F sl Greater than the target safety factor F st At this time, two single-row anti-slide piles can be used to reinforce the slope.

[0052] For details, please continue to refer to [the website / information]. Figure 2 The x-axis represents the horizontal distance x between the single row of anti-slide piles 2 and the shear outlet 13, and the y-axis represents the safety factor F of slope 1. The target safety factor F... st Determine the target safety factor line, which intersects the upper slope stability line at point A. Based on point A, determine the lower limit x-coordinate of the anti-slide pile layout. The target safety factor line intersects the lower slope stability line at point B, which determines the upper limit x-coordinate of the single-row anti-slide pile layout. The x-coordinate range between the lower and upper limit x-coordinates of the single-row anti-slide pile layout is the reasonable range for the single-row anti-slide pile layout.

[0053] In other words, the coordinate range between point A and point B is within the reasonable range for the arrangement of a single row of anti-slide piles.

[0054] That is, the target safety factor F st With the maximum safety factor F sl The safety factor corresponding to the x-coordinate between points A and B is a reasonable safety factor, combined with the attached... Figure 2 The maximum safety factor F on the vertical axis sl With the target safety factor F st The x-coordinates between points A and B are the appropriate reinforcement positions for single-row anti-slide piles 2.

[0055] When the maximum safety factor F sl Less than the target safety factor F st If the slope 1 is not suitable for reinforcement by single-row anti-slide piles 2, then other reinforcement schemes are required to reinforce slope 1.

[0056] In summary, the method for determining the location of anti-slide piles provided by this invention offers a unified and reliable approach and process for selecting reasonable anti-slide pile reinforcement locations. This avoids relying on designers' personal experience, reduces discrepancies in the determination of anti-slide pile locations, and ensures that the reinforcement locations are scientifically sound. The method proposed in this invention ensures more reasonable placement of anti-slide piles on slopes, guaranteeing that the potential sliding surfaces of both the upper and lower slopes meet the designed target safety factor, thus ensuring the reliability of the anti-slide pile reinforcement for slopes.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for determining a position of a anti-slide pile reinforcement, characterized in that, The method comprises the following steps: obtaining analysis parameters of the slope and a target safety factor of the slope; inputting the analysis parameters into a slope stability analysis computer to prepare for overall slope stability analysis, wherein the analysis parameters include geometric parameters and material parameters of the slope; analyzing the overall stability of the slope to obtain overall slope stability analysis results, wherein the overall slope stability analysis results include an overall safety factor of the slope, an overall potential sliding surface, a shear outlet position, and a rear edge tension crack position; determining whether the overall safety factor of the slope is greater than the target safety factor, and when the target safety factor is greater than the overall safety factor, reinforcing the slope by using single-row anti-slide piles; starting from the shear outlet, taking the horizontal distance between the single-row anti-slide piles and the shear outlet as the horizontal coordinate, and taking the safety factor of the slope as the vertical coordinate, analyzing the stability of the slope above the single-row anti-slide piles to obtain the safety factor of the slope above the single-row anti-slide piles when the single-row anti-slide piles are located at different positions, thereby obtaining the slope stability line above the single-row anti-slide piles, and analyzing the stability of the slope below the single-row anti-slide piles to obtain the safety factor of the slope below the single-row anti-slide piles when the single-row anti-slide piles are located at different positions, thereby obtaining the slope stability line below the single-row anti-slide piles; selecting the intersection of the slope stability line above the single-row anti-slide piles and the slope stability line below the single-row anti-slide piles to determine the maximum safety factor that can be achieved by using the single-row anti-slide piles for reinforcement; determining whether the maximum safety factor is greater than the target safety factor, and when the maximum safety factor is greater than the target safety factor, determining a target safety factor line from the target safety factor, wherein the target safety factor line intersects the slope stability line above the single-row anti-slide piles at point A, determining the lower limit horizontal coordinate of the single-row anti-slide pile arrangement according to the point A, the target safety factor line intersects the slope stability line below the single-row anti-slide piles at point B, determining the upper limit horizontal coordinate of the single-row anti-slide pile arrangement according to the point B, and the horizontal coordinate range between the lower limit horizontal coordinate and the upper limit horizontal coordinate of the single-row anti-slide pile arrangement is the reasonable range of the single-row anti-slide pile arrangement.

2. The method for determining the pile reinforced position according to claim 1, characterized in that, The step of determining whether the target safety factor is greater than the overall safety factor further comprises: if the overall safety factor is greater than the target safety factor, the slope does not need to be reinforced.

3. The method for determining the pile reinforced position according to claim 1, characterized in that, The method further comprises: inputting the horizontal coordinates corresponding to different positions of the single-row anti-slide piles into the slope stability analysis computer to solve the stability of the slope above and below the single-row anti-slide piles, and obtaining the safety factors of the slope above and below the single-row anti-slide piles when the single-row anti-slide piles are arranged at different positions.

4. The method for determining the reinforcement position of anti-slide piles according to claim 3, wherein: the slope stability line above the single-row anti-slide piles and the slope stability line below the single-row anti-slide piles are drawn according to the safety factors of the slope above and below the single-row anti-slide piles.

5. The method for determining the reinforcement position of anti-slide piles according to claim 1, wherein: the number of different positions of the single-row anti-slide piles and the horizontal coordinates of the different positions are determined in combination with the sliding surface length, geological conditions, and geometric parameters of the slope during overall slope stability analysis.

6. The method for determining the pile reinforced position according to claim 1, wherein, When the maximum safety factor is less than the target safety factor, then other schemes are adopted to reinforce the slope.

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