Photovoltaic support single pile anti-overturning checking calculation method and device and storage medium

Abstract

The invention relates to a photovoltaic support single pile anti-overturning checking calculation method and device and a storage medium. The method comprises the following steps that a photovoltaic support single pile structure analysis chart is constructed based on an overall analysis result of a photovoltaic support; establishing a row pile support model based on the photovoltaic support single pile structure analysis chart through a unit calculation module of the deep foundation pit correction software; running the row pile support model through a unit calculation module of the deep foundation pit management software to obtain the anti-overturning performance of the single pile of the photovoltaic support; and anti-overturning stability checking calculation is carried out based on the anti-overturning performance of the photovoltaic support single pile.

Description

Technical Field

[0001] The invention relates to a photovoltaic support single pile anti-overturning verification method, equipment and storage medium, belonging to the technical field of photovoltaic power generation. Background Art

[0002] Photovoltaic brackets generally use pile foundations. Usually, a single row of piles is used to install the photovoltaic bracket at a height of about 2.5m from the ground. Some projects may require a height of 6m or higher. Photovoltaic brackets are structures that are mainly subjected to wind loads. Under the action of strong wind loads, the anti-overturning damage of photovoltaic pile foundations is one of the more typical forms of damage. Therefore, in the design, it is an important part of the design to verify the anti-overturning bearing capacity of a single pile according to different geological conditions.

[0003] In the existing design methods, there are usually two ways to verify the anti-overturning of photovoltaic pile foundations: one is to calculate according to the formula given in the "Photovoltaic Support Design Specifications", and the other is to use finite element software to calculate the interaction between piles and soil. The first method has a large deviation in the calculation results due to the large number of artificial assumptions in many parameters in the formula; the second method has a large workload for modeling and is more suitable for theoretical research, but not suitable for large-scale promotion and application in actual engineering. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention proposes a method, device and storage medium for calculating the anti-overturning of a single pile of a photovoltaic support.

[0005] The technical solution of the present invention is as follows:

[0006] On the one hand, the present invention provides a method for calculating the anti-overturning of a single pile of a photovoltaic support, comprising the following steps:

[0007] Construct a single pile structure analysis diagram of the photovoltaic support based on the overall analysis results of the photovoltaic support;

[0008] The pile support model is established based on the single pile structure analysis diagram of the photovoltaic support through the unit calculation module of the Lizheng deep foundation pit software;

[0009] The anti-overturning performance of a single pile of the photovoltaic support was obtained by running the pile support model through the unit calculation module of the Lizheng deep foundation pit software;

[0010] The anti-overturning stability calculation is carried out based on the anti-overturning performance of the photovoltaic support single pile.

[0011] As a preferred embodiment of the present invention, the photovoltaic support single pile structure analysis diagram includes the height of the pile top from the ground, the depth of the pile into the ground and the pile top load.

[0012] As a preferred embodiment of the present invention, the row pile support model includes virtual soil layer thickness, actual soil layer thickness and photovoltaic support single pile structure data.

[0013] As a preferred embodiment of the present invention, the thickness of the virtual soil layer is taken as the height of the pile exposed to the ground, and the density, cohesion and internal friction angle of the virtual soil layer are all set to preset values ​​to simulate the part of the pile body exposed to the ground and not subjected to soil pressure.

[0014] As a preferred embodiment of the present invention, the actual soil layer includes multiple layers, and the thickness, gravity, cohesion and internal friction angle values ​​of each soil layer are set according to the actual soil layer type and parameters of each soil layer in engineering geology.

[0015] As a preferred embodiment of the present invention, before running the pile support model through the Lizheng deep foundation pit software, the horizontal thrust of the pile top and the soil pressure calculation method are set. After the model is run, the active soil pressure, passive soil pressure, anti-overturning bending moment of the pile bottom and the fulcrum force of the single pile of the photovoltaic bracket are obtained.

[0016] As a preferred embodiment of the present invention, the anti-overturning stability calculation formula of a photovoltaic support single pile is:

[0017]

[0018] Where: Kov represents the anti-overturning stability of a single photovoltaic support pile; M a Represents the active earth pressure of a single pile of a photovoltaic support; M w M represents the anti-overturning bending moment at the bottom of a single photovoltaic support pile; p Represents the passive earth pressure of a single photovoltaic support pile; M z Indicates the fulcrum force of a single pile of a photovoltaic support;

[0019] An anti-overturning stability threshold is set. If the calculated anti-overturning stability of a single photovoltaic support pile is greater than the preset threshold, the anti-overturning stability of the single photovoltaic support pile is considered to be qualified.

[0020] On the other hand, the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in any embodiment of the present invention is implemented.

[0021] In yet another aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in any embodiment of the present invention.

[0022] The present invention has the following beneficial effects:

[0023] 1. The present invention utilizes the computational advantages of Lizheng deep foundation pit software in geotechnical aspects, and simulates the stress mode of photovoltaic brackets by establishing virtual soil layers. It can perform the anti-overturning calculation of single piles of photovoltaic brackets more efficiently and accurately than existing methods. For photovoltaic projects with complex and changeable terrain and geological conditions, it greatly improves the calculation efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a flow chart of the method of the present invention;

[0025] Figure 2 It is a structural diagram of the pile row support model of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be understood that the step numbers used in this document are only for convenience of description and are not intended to limit the order in which the steps are executed.

[0028] It should be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0029] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0030] The term "and / or" means and includes any and all possible combinations of one or more of the associated listed items.

[0031] Embodiment 1:

[0032] See also Figure 1 , a photovoltaic support single pile anti-overturning verification method, comprising the following steps:

[0033] Construct a single pile structure analysis diagram of the photovoltaic support based on the overall analysis results of the photovoltaic support;

[0034] The pile support model is established based on the single pile structure analysis diagram of the photovoltaic support through the unit calculation module of the Lizheng deep foundation pit software;

[0035] The anti-overturning performance of a single pile of the photovoltaic support was obtained by running the pile support model through the unit calculation module of the Lizheng deep foundation pit software;

[0036] The anti-overturning stability calculation is carried out based on the anti-overturning performance of the photovoltaic support single pile.

[0037] As a preferred implementation of this embodiment, the photovoltaic support single pile structure analysis diagram includes the height of the pile top from the ground, the depth of the pile into the ground and the pile top load.

[0038] As a preferred implementation of this embodiment, the row pile support model includes virtual soil layer thickness, actual soil layer thickness and photovoltaic support single pile structure data.

[0039] As a preferred implementation of this embodiment, the thickness of the virtual soil layer is taken as the height of the pile exposed to the ground, and the density, cohesion and internal friction angle of the virtual soil layer are all set to values ​​close to 0, such as 0.01, to simulate the part of the pile body exposed to the ground and not subjected to soil pressure.

[0040] As a preferred implementation of this embodiment, the actual soil layer includes multiple layers, and the thickness, density, cohesion and internal friction angle values ​​of each soil layer are set according to the actual soil layer type and parameters of each soil layer in engineering geology.

[0041] As a preferred implementation of this embodiment, before running the vertical row pile support model through the Lizheng deep foundation pit software, the horizontal thrust of the pile top (simulating wind load conditions) and the soil pressure calculation method are set. After the model is run, the active soil pressure, passive soil pressure, anti-overturning bending moment of the pile bottom and the fulcrum force of the photovoltaic support single pile are obtained. For the internal support point, the fulcrum force is determined by the internal support pressure resistance. For the anchor rod or anchor cable, the fulcrum force is determined by the smaller value of the anchoring force and the tensile force of the anchor rod or anchor cable.

[0042] In this embodiment, the soil pressure calculation method includes:

[0043] (1) For silt and silty soil, the soil pressure should be calculated by combining water and soil using the soil's consolidated undrained test strength index and saturated density;

[0044] (2) For sandy soil, the soil pressure should be calculated using the effective stress intensity index and the effective weight of the soil according to the principle of water-soil separation;

[0045] (3) For silty soils, clay soils, etc., the effective stress strength index and the effective weight of the soil should be used to calculate the soil pressure according to the principle of separate calculation of water and soil. If there is engineering experience, the total stress strength index of the triaxial consolidation undrained test can also be used to calculate the soil pressure according to the principle of combined calculation of water and soil.

[0046] As a preferred implementation of this embodiment, the anti-overturning stability calculation formula of a photovoltaic support single pile is:

[0047]

[0048] Where: Kov represents the anti-overturning stability of a single photovoltaic support pile; M a Represents the active earth pressure of a single pile of a photovoltaic support; M w M represents the anti-overturning bending moment at the bottom of a single photovoltaic support pile; p Represents the passive earth pressure of a single photovoltaic support pile; M z Indicates the fulcrum force of a single pile of a photovoltaic support;

[0049] An anti-overturning stability threshold is set. If the calculated anti-overturning stability of a single photovoltaic support pile is greater than the preset threshold, the anti-overturning stability of the single photovoltaic support pile is considered to be qualified.

[0050] Embodiment 2:

[0051] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in any embodiment of the present invention when executing the program.

[0052] Embodiment three:

[0053] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method described in any embodiment of the present invention is implemented.

[0054] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0055] Those of ordinary skill in the art will appreciate that the various units and algorithm steps described in the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0056] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0057] In several embodiments provided in the present application, if any function is implemented in the form of 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 application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory; hereinafter referred to as: ROM), random access memory (Random Access Memory; hereinafter referred to as: RAM), disk or optical disk, and other media that can store program codes.

[0058] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for calculating the anti-overturning of a single pile of a photovoltaic support, characterized in that: The following steps are involved: Construct a single pile structure analysis diagram of the photovoltaic support based on the overall analysis results of the photovoltaic support; The pile support model is established based on the single pile structure analysis diagram of the photovoltaic support through the unit calculation module of the Lizheng deep foundation pit software; The anti-overturning performance of a single pile of the photovoltaic support was obtained by running the pile support model through the unit calculation module of the Lizheng deep foundation pit software; The anti-overturning stability calculation is carried out based on the anti-overturning performance of the photovoltaic support single pile.

2. A photovoltaic support single pile anti-overturning verification method according to claim 1, characterized in that: The photovoltaic support single pile structural analysis diagram includes the height of the pile top from the ground, the depth of the pile into the ground and the pile top load.

3. A photovoltaic support single pile anti-overturning verification method according to claim 1, characterized in that: The row pile support model includes virtual soil layer thickness, actual soil layer thickness and photovoltaic support single pile structure data.

4. A photovoltaic support single pile anti-overturning calculation method according to claim 3, characterized in that: The thickness of the virtual soil layer is the height of the pile exposed to the ground. The weight, cohesion and internal friction angle of the virtual soil layer are all set to preset values ​​to simulate the part of the pile body exposed to the ground and not subjected to soil pressure.

5. A photovoltaic support single pile anti-overturning verification method according to claim 3, characterized in that: The actual soil layer includes multiple layers, and the thickness, gravity, cohesion and internal friction angle values ​​of each soil layer are set according to the actual soil layer type and parameters of each soil layer in engineering geology.

6. A photovoltaic support single pile anti-overturning verification method according to claim 3, characterized in that: Before running the pile support model in the Lizheng deep foundation pit software, the horizontal thrust at the pile top and the soil pressure calculation method are set. After the model is run, the active soil pressure, passive soil pressure, anti-overturning bending moment at the pile bottom and fulcrum force of the single pile of the photovoltaic bracket are obtained.

7. A photovoltaic support single pile anti-overturning verification method according to claim 3, characterized in that: The calculation formula for the anti-overturning stability of a single photovoltaic support pile is: Where: Kov represents the anti-overturning stability of a single photovoltaic support pile; M a Represents the active earth pressure of a single photovoltaic support pile; M w M represents the anti-overturning bending moment at the bottom of a single photovoltaic support pile; p Represents the passive earth pressure of a single photovoltaic support pile; M z Indicates the fulcrum force of a single pile of a photovoltaic support; An anti-overturning stability threshold is set. If the calculated anti-overturning stability of a single photovoltaic support pile is greater than the preset threshold, the anti-overturning stability of the single photovoltaic support pile is considered to be qualified.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

Images