Method and apparatus for determining pile length of a pile foundation

Abstract

The application discloses a method and device for determining the pile length of a pile foundation. The method for determining the pile length of a pile foundation comprises the following steps: step one, extracting the soil layer data of each hole point according to the geological exploration plane profile; step two, generating a three-dimensional soil layer according to the soil layer data extracted in step one; and step three, determining the pile length of each pile foundation according to the side resistance and end resistance of each layer of soil determined in advance. The application realizes the automatic design of the pile bearing capacity and the pile length of each pile and the accurate statistics of the pile foundation engineering quantity, and the design safety and the degree of refinement are significantly improved compared with the traditional two-dimensional pile foundation design. Meanwhile, the application develops a program for automatically extracting the plane profile data of the geological exploration hole points, and the efficiency of the traditional manual input of the soil layer data of each hole point is greatly improved. In addition, the application is not only suitable for pile foundation design, but also can be applied to the accurate statistics of the engineering quantity of foundation replacement. By improving the degree of refinement of the pile foundation design in the industry, the application greatly improves the design accuracy and optimizes the engineering investment, and has important practical significance.

Description

Technical Field

[0001] This invention relates to the field of machinery, and more specifically to a method and apparatus for determining the length of a pile foundation. Background Technology

[0002] Traditional two-dimensional pile foundation design methods are based on empirical formulas and experimental data. They mostly rely on geological survey reports, selecting stratigraphic profiles from a few boreholes, and combining these with soil parameters to calculate parameters such as pile length, pile bearing capacity, and pile bending strength. This method typically assumes that the soil distribution is uniform within the project boundary, using one or a few boreholes to represent the soil distribution across the entire boundary area. Therefore, when the number of piles is small and the soil distribution is simple and relatively stable, it often does not introduce significant errors.

[0003] Traditional two-dimensional pile foundation design methods are generally effective in simple engineering projects, but they have certain limitations in projects with complex geological conditions or large-scale buildings and structures with a large number of piles. Specifically, they have the following drawbacks: (1) Poor three-dimensional visualization: This method cannot intuitively represent the distribution of three-dimensional soil layers or the distribution of three-dimensional pile foundations, which greatly affects the designers' analysis and judgment of the entire project. (2) Non-uniformity of soil layer distribution: When the soil layer distribution is uneven within the engineering red line, the traditional two-dimensional design method has a large error in assuming the uniformity of the soil layer, which may cause the pile length and bearing capacity to be overestimated or underestimated, thereby increasing the project cost or causing project risks. (3) Inefficiency of manual statistics of pile foundation details: When there are many piles in the engineering design and the pile lengths are different, the efficiency of manually compiling the pile foundation details is low and it is easy to make mistakes, which leads to inefficiency in the statistics of pile foundation engineering quantity and pile foundation design errors.

[0004] While methods for generating three-dimensional pile foundations exist, they are all geometric applications of three-dimensional pile foundations. That is, they utilize existing two-dimensional traditional pile foundation design results, generating three-dimensional pile foundations under known conditions of a fixed bearing layer and the length of the pile entering the bearing layer. These methods generally lack the capability for designing three-dimensional pile foundations. Therefore, there is an urgent need for more intuitive, precise, and accurate methods and devices for determining pile lengths. Summary of the Invention

[0005] The present invention aims to provide a method and apparatus for determining the pile length of a pile foundation, which can solve the above-mentioned technical problems.

[0006] According to one aspect of the present invention, a method for determining the pile length of a pile foundation is provided. The method includes: step one: extracting soil layer data for each borehole point based on a geological survey profile; step two: generating a three-dimensional soil layer based on the soil layer data extracted in step one; and step three: determining the pile length of each pile foundation based on predetermined lateral resistance and end resistance of each soil layer.

[0007] Preferably, after step three, step four is also included: generating a visualization model of each pile foundation based on the pile length of each pile foundation.

[0008] Preferably, after step four, step five is also included: sorting and numbering each pile foundation according to its length and planar position.

[0009] Preferably, after step five, step six is ​​also included: generating a detailed list of each pile foundation based on the pile length of each pile foundation.

[0010] Preferably, step three includes: presetting the pile length and the depth of the pile tip entering the bearing layer for each pile foundation; determining the bearing capacity of each pile foundation based on the pre-determined lateral resistance and end resistance of each soil layer to obtain a bearing capacity range; determining a bearing capacity suitable for all pile foundations within this bearing capacity range; determining a depth of the pile tip entering the bearing layer suitable for all pile foundations based on the determined bearing capacity; and determining the pile length of each pile foundation based on the determined depth of the pile tip entering the bearing layer and the pre-determined depth of the pile tip entering the bearing layer.

[0011] Preferably, determining the pile length of each pile foundation based on the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer includes: determining a first difference between the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer; determining whether the first difference is greater than a preset specific threshold; if the determination result is yes, then determining the sum of the first difference and the preset pile length of each pile foundation as the pile length of each pile foundation.

[0012] Preferably, determining the pile length of each pile foundation based on the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer includes: determining the average value and standard deviation of the preset depth of the pile tip entering the bearing layer for each pile foundation; determining whether the determined depth of the pile tip entering the bearing layer exceeds the depth deviation range defined by the average value and the standard deviation; if the determination result is yes, determining a first ratio of the determined depth of the pile tip entering the bearing layer to the average value; and determining the product of the first ratio and the preset pile length of each pile foundation as the pile length of each pile foundation.

[0013] Preferably, if the determination result is negative, a second difference between the determined depth of the pile tip into the bearing layer and the average value is determined; a second ratio between the second difference and the standard deviation is determined; and the product of the second ratio and the preset pile length of each pile foundation is determined as the pile length of each pile foundation.

[0014] According to another aspect of the present invention, an apparatus for determining the pile length of a pile foundation is provided, comprising: an extraction module for extracting soil layer data for each borehole point based on a geological survey profile; a generation module for generating a three-dimensional soil layer based on the extracted soil layer data; and a determination module for determining the pile length of each pile foundation based on predetermined lateral resistance and end resistance of each soil layer.

[0015] Preferably, the determining module includes: a preset unit for presetting the pile length and the depth of the pile tip entering the bearing layer of each pile foundation; a first determining unit for determining the bearing capacity of each pile foundation based on the preset side resistance and end resistance of each soil layer, thereby obtaining a bearing capacity range; a second determining unit for determining a bearing capacity suitable for all pile foundations within the bearing capacity range; a third determining unit for determining a depth of the pile tip entering the bearing layer suitable for all pile foundations based on the determined bearing capacity; and a fourth determining unit for determining the pile length of each pile foundation based on the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer.

[0016] This invention provides a method and apparatus for determining the pile length of a pile foundation. The method includes: Step 1: Extracting soil layer data for each borehole point based on a geological survey profile; Step 2: Generating a three-dimensional soil layer structure based on the soil layer data extracted in Step 1; and Step 3: Determining the pile length of each pile foundation based on pre-determined lateral and end resistance of each soil layer. This invention achieves automated design of pile bearing capacity and pile length for each pile, as well as accurate statistics of pile foundation engineering quantities. Compared to traditional two-dimensional pile foundation design, its design safety and precision are significantly improved. Furthermore, this invention develops a program for automatically extracting geological survey borehole profile data, greatly improving the efficiency of traditional manual entry of soil layer data for each borehole point. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 A flowchart of a method for determining the pile length of a pile foundation according to an embodiment of the present invention is shown; and Figure 2 A schematic diagram of an apparatus for determining the pile length of a pile foundation according to an embodiment of the present invention is shown. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Reference will now be made in detail to various embodiments of the invention, examples of which are shown in the accompanying drawings and described below. For ease of interpretation and precise definition in the appended claims, the terms “upper,” “lower,” “inner,” and “outer” are used to describe features with reference to their location in the exemplary embodiments shown in the figures.

[0020] Figure 1 A flowchart illustrating a method for determining the pile length of a pile foundation according to an embodiment of the present invention is shown. Figure 1 As shown, the method for determining the pile length of a pile foundation includes: Step 1: Extracting soil layer data for each borehole point based on the geological survey profile; Step 2: Generating a three-dimensional soil layer based on the soil layer data extracted in Step 1; and Step 3: Determining the pile length of each pile foundation based on the pre-determined side resistance and end resistance of each soil layer. Following Step 3, Step 4: Generating a visualization model of each pile foundation based on its pile length. Following Step 4, Step 5: Sort and numbering each pile foundation based on its pile length and planar location. Following Step 5, Step 6: Generating a detailed list of each pile foundation based on its pile length. Step three includes: presetting the pile length and the depth of the pile tip entering the bearing layer for each pile foundation; determining the bearing capacity of each pile foundation based on the pre-determined lateral resistance and end resistance of each soil layer to obtain the bearing capacity range; determining the bearing capacity suitable for all pile foundations within the bearing capacity range; determining the depth of the pile tip entering the bearing layer suitable for all pile foundations based on the determined bearing capacity; and determining the pile length of each pile foundation based on the determined depth of the pile tip entering the bearing layer and the pre-determined depth of the pile tip entering the bearing layer.

[0021] Traditional two-dimensional pile foundation design methods often lack three-dimensional visualization analysis and judgment, and ignore the influence of soil layer non-uniformity. They are insufficient to fully consider the complex behavior of underground soil and are difficult to apply to complex engineering projects or those with high stability requirements. This invention provides a method for determining pile length, offering a more efficient and accurate pile foundation design process. In steps one and two, using soil layer data extracted from the geological survey profile, a three-dimensional soil layer is generated, allowing for better analysis of the relationships between different soil layers and facilitating the determination of pile foundation design parameters. In step three, using pre-determined lateral and end resistance of each soil layer, combined with the bearing capacity range, the pile length of each foundation is accurately determined, meeting the stability and safety requirements under different engineering requirements and geological conditions. In step four, after determining the pile length of each foundation, a visualization model is used to display the pile foundation layout and shape, helping engineers better understand the pile foundation design and conduct more intuitive evaluation and optimization. In step five, each pile is sorted and numbered according to its length and planar location, facilitating project implementation and construction management. In step six, a detailed list is generated for each pile foundation, listing all parameters and data in detail, which can provide accurate reference and guidance for project cost and construction.

[0022] According to an embodiment of the present invention, determining the pile length of each pile foundation based on the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer includes: determining a first difference between the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer; determining whether the first difference is greater than a preset specific threshold; if the determination result is yes, then determining the sum of the first difference and the preset pile length of each pile foundation as the pile length of each pile foundation.

[0023] The method for determining the pile length of a pile foundation provided by this invention calculates a first difference between the depth of the pile tip entering the bearing stratum and a preset depth of the pile tip entering the bearing stratum, and determines whether the first difference is greater than a preset specific threshold, ensuring that the pile length calculation is more accurate and reasonable. Furthermore, the pile length can be flexibly adjusted based on the determination result, making the pile foundation design more in line with actual engineering needs and avoiding unnecessary engineering risks, waste, and costs.

[0024] According to an embodiment of the present invention, determining the pile length of each pile foundation based on the determined depth of the pile tip entering the bearing stratum and the preset depth of the pile tip entering the bearing stratum includes: determining the average value and standard deviation of the preset depth of the pile tip entering the bearing stratum for each pile foundation; determining whether the determined depth of the pile tip entering the bearing stratum exceeds the depth deviation range defined by the average value and the standard deviation; if the determination result is yes, determining a first ratio of the determined depth of the pile tip entering the bearing stratum to the average value; determining the product of the first ratio and the preset pile length of each pile foundation as the pile length of each pile foundation. If the determination result is no, determining a second difference between the determined depth of the pile tip entering the bearing stratum and the average value; determining a second ratio of the second difference to the standard deviation; determining the product of the second ratio and the preset pile length of each pile foundation as the pile length of each pile foundation.

[0025] The method for determining the pile length of a pile foundation provided by this invention standardizes the depth of the pile tip into the bearing stratum by determining a preset average value and standard deviation, thereby improving the stability and reliability of pile length calculation. Furthermore, when the depth of the pile tip into the bearing stratum exceeds the depth deviation range defined by the average value and standard deviation, different pile lengths are determined based on the first ratio or the second difference between the determined depth of the pile tip into the bearing stratum and the average value, thus meeting engineering requirements under different geological conditions.

[0026] Figure 2 A schematic diagram of a device for determining the pile length of a pile foundation according to an embodiment of the present invention is shown. Figure 2 As shown, the device for determining the pile length of a pile foundation includes: an extraction module for extracting soil layer data for each borehole point based on a geological survey profile; a generation module for generating three-dimensional soil layers based on the extracted soil layer data; and a determination module for determining the pile length of each pile foundation based on pre-determined side resistance and end resistance of each soil layer. The determination module includes: a preset unit for presetting the pile length and the depth of the pile tip into the bearing stratum for each pile foundation; a first determination unit for determining the bearing capacity of each pile foundation based on the pre-determined side resistance and end resistance of each soil layer, thus obtaining a bearing capacity range; a second determination unit for determining a bearing capacity suitable for all pile foundations within the bearing capacity range; a third determination unit for determining a depth of the pile tip into the bearing stratum suitable for all pile foundations based on the determined bearing capacity; and a fourth determination unit for determining the pile length of each pile foundation based on the determined depth of the pile tip into the bearing stratum and the preset depth of the pile tip into the bearing stratum.

[0027] Traditional two-dimensional pile foundation design methods often neglect the influence of the third dimension and soil heterogeneity, failing to fully consider the complex behavior of underground soil and making them unsuitable for complex engineering projects or those with high stability requirements. This invention provides a device for determining the pile length of pile foundations, offering a more convenient and efficient pile foundation design. The device includes an extraction module, a generation module, and a determination module. The extraction module extracts soil layer data for each borehole point from a geological survey profile, providing the necessary geological information for subsequent pile foundation design. The generation module generates a three-dimensional soil layer based on the extracted soil layer data, helping engineers better understand the soil structure and properties. The determination module efficiently determines the pile length of each pile foundation using pre-determined lateral and end resistance of each soil layer, combined with the bearing capacity range, simplifying the calculation process for pile foundation design. Furthermore, the determination module includes a preset unit, a first determination unit, a second determination unit, a third determination unit, and a fourth determination unit. The preset unit allows engineers to set the pile length and the depth of the pile tip into the bearing layer for each pile foundation, providing a reference for subsequent calculations. The first determination unit, the second determination unit, the third determination unit, and the fourth determination unit help engineers calculate the bearing capacity and the depth of the pile tip into the bearing layer suitable for all pile foundations based on the pre-determined lateral resistance, end resistance, and bearing capacity range, thereby determining the pile length of each pile foundation and ensuring the stability and safety of the pile foundation design.

[0028] The following embodiments are merely examples to clearly illustrate the present invention and are not intended to limit the implementation of the invention. Those skilled in the art can make other variations or modifications based on the following description, and these variations, modifications, substitutions, and alterations arising from the principles and spirit of the present invention still fall within the protection scope of the present invention.

[0029] According to an embodiment of the present invention, the soil layer data for each borehole point is extracted based on the geological survey profile, which typically includes the following steps: Step 1: Link the CAD file and display its name, then perform operations on the current CAD file; Step 2: Perform a plane / section snap test in CAD, input the plane / section snap frame range value, and confirm the coordinates of the plane and section; Step 3: Select the area in the plan / section view to generate the planar coordinates of all boreholes and the elevation of each soil layer, and display the number of boreholes generated; Step 4: Export the soil layer data file as an Excel file.

[0030] According to an embodiment of the present invention, generating a three-dimensional soil layer based on an Excel soil layer data file typically includes the following steps: Step 1: Input the preset pile bearing capacity value, in kN; Step 2: Input the standard value of the first soil layer, in kPa; Enter the standard value of the lateral resistance of the second soil layer, in kPa; Enter the standard value of the lateral resistance of the third soil layer, in kPa; Enter the standard value of the lateral resistance of the fourth soil layer, in kPa; Enter the standard value of the lateral resistance of the fifth soil layer, in kPa; Enter the standard value of the soil lateral resistance of the sixth layer (pile end bearing layer), in kPa; Enter the standard value of the soil lateral resistance of the seventh layer (pile end bearing layer), in kPa.

[0031] Step 3: Generate the triangular faces of each soil layer.

[0032] Of course, those skilled in the art should know that the present invention does not limit the number of soil layers, and all soil layers capable of achieving the above-mentioned three-dimensional soil layer generation function, as well as the equivalent alternatives set above, are within the protection scope of the present invention.

[0033] In summary, according to the above embodiments of the present invention, a method and apparatus for determining the pile length of a pile foundation are provided. The method for determining the pile length includes: Step 1: Extracting soil layer data for each borehole point based on a geological survey profile; Step 2: Generating a three-dimensional soil layer based on the soil layer data extracted in Step 1; and Step 3: Determining the pile length of each pile foundation based on the pre-determined side resistance and end resistance of each soil layer. This invention achieves automated design of pile bearing capacity and pile length for each pile, as well as accurate statistics of pile foundation engineering quantities. Compared with traditional two-dimensional pile foundation design, its design safety and precision are significantly improved. Simultaneously, this invention develops a program for automatically extracting geological survey borehole profile data, greatly improving the efficiency of traditional manual entry of soil layer data for each borehole point. Furthermore, this invention is not only applicable to pile foundation design but can also be extended to the accurate statistics of foundation replacement engineering quantities. By improving the precision of pile foundation design within the industry, this invention greatly improves design accuracy and optimizes engineering investment, possessing significant practical value. Therefore, this invention has broad prospects for promotion and application.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for determining the pile length of a pile foundation, characterized in that, include: Step 1: Extract soil layer data for each borehole point based on the geological survey profile. Step 2: Generate a three-dimensional soil layer based on the soil layer data extracted in Step 1; as well as Step 3: Determine the length of each pile foundation based on the pre-determined lateral and end resistance of each soil layer; Step three includes: The length of each pile foundation and the depth of the pile tip entering the bearing layer are preset. Based on the predetermined lateral resistance and end resistance of each soil layer, the bearing capacity of each pile foundation is determined, and the bearing capacity range is obtained; Within the stated bearing capacity range, determine the bearing capacity suitable for all pile foundations; Based on the determined bearing capacity, determine the appropriate depth of the pile tip into the bearing stratum for all pile foundations; Based on the determined depth of the pile tip into the bearing stratum and the preset depth of the pile tip into the bearing stratum, the length of each pile foundation is determined, including: Determine the first difference between the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer; Determine whether the first difference is greater than a pre-set specific threshold; If the judgment result is yes, then the sum of the first difference and the preset pile length of each pile foundation is determined as the pile length of each pile foundation. Determine the average value and standard deviation of the depth of each pile tip entering the bearing layer for each of the pre-set pile foundations; Determine whether the determined depth of the pile tip into the bearing layer exceeds the depth deviation range defined by the average value and the standard deviation; If the judgment result is yes, determine the first ratio of the determined depth of the pile tip into the bearing layer to the average value; The product of the first ratio and the preset pile length of each pile foundation is determined as the pile length of each pile foundation; If the judgment result is negative, determine the second difference between the determined depth of the pile tip into the bearing layer and the average value; Determine a second ratio of the second difference to the standard deviation; The product of the second ratio and the preset pile length of each pile foundation is determined as the pile length of each pile foundation.

2. The method according to claim 1, characterized in that, Following step three, the following is also included: Step 4: Generate a visualization model of each pile foundation based on the pile length of each pile foundation.

3. The method for determining pile foundations according to claim 2, characterized in that, Following step four, the following is also included: Step 5: Sort and number each pile foundation according to its length and planar position.

4. The method according to claim 3, characterized in that, Following step five, the following is also included: Step 6: Generate a detailed list of each pile foundation based on the pile length of each pile foundation.

5. An apparatus for determining the pile length of a pile foundation according to the method of claim 1, characterized in that, include: The extraction module is used to extract soil layer data for each borehole point based on the geological survey profile. The generation module is used to generate three-dimensional soil layers based on the extracted soil layer data; as well as The determination module is used to determine the pile length of each pile foundation based on the pre-determined lateral and end resistance of each soil layer.

6. The apparatus according to claim 5, characterized in that, The determining module includes: The preset unit is used to preset the pile length and the depth of the pile tip entering the bearing layer for each pile foundation; The first determining unit is used to determine the bearing capacity of each pile foundation based on the pre-determined side resistance and end resistance of each soil layer, thereby obtaining the bearing capacity range; The second determining unit is used to determine the bearing capacity suitable for all pile foundations within the bearing capacity range; The third determining unit is used to determine the appropriate depth of the pile tip into the bearing layer for all pile foundations based on the determined bearing capacity. The fourth determining unit is used to determine the length of each pile foundation based on the determined depth of the pile tip entering the bearing layer and the preset depth of the pile tip entering the bearing layer.

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