Photovoltaic support single-pile overturning resistance checking method, device and storage medium

Abstract

The present application relates to a kind of photovoltaic support single pile overturning checking method, equipment and storage medium, the method includes the following steps: photovoltaic support single pile structure analysis diagram is constructed based on the overall analysis result of photovoltaic support;Through the unit calculation module of Lizheng deep foundation pit software, establish row pile support model based on photovoltaic support single pile structure analysis diagram;Through the unit calculation module of Lizheng deep foundation pit software, run row pile support model, obtain the anti-overturning performance of photovoltaic support single pile;Based on the anti-overturning performance of photovoltaic support single pile, anti-overturning stability checking is carried out.

Description

TECHNICAL FIELD

[0001] The application relates to a photovoltaic support single-pile overturning checking method, equipment and storage medium, and belongs to the technical field of photovoltaic power generation. BACKGROUND

[0002] Photovoltaic supports generally adopt pile foundation, and are usually installed at a height of about 2.5 m from the ground by using single-row piles, and some projects require a height of 6 m or more. The photovoltaic support is a structure mainly subjected to wind load, and under the action of large wind load, the anti-overturning damage of the photovoltaic pile foundation is one of the typical damage forms. Therefore, checking the anti-overturning bearing capacity of the single pile according to different geological conditions is an important part of the design.

[0003] In the existing design method, the anti-overturning checking of the photovoltaic pile foundation is usually divided into two types: one is to calculate according to the formula given in the Photovoltaic Support Design Specification, and the other is to calculate the pile-soil interaction by using finite element software. The first method has many artificial assumptions in the formula, and the calculation result has a large deviation. The second method has a large modeling workload and is more suitable for theoretical research, and is not suitable for large-scale application in practical engineering. SUMMARY

[0004] In order to solve the problems in the prior art, the application provides a photovoltaic support single-pile overturning checking method, equipment and storage medium.

[0005] The technical scheme of the application is as follows:

[0006] On the one hand, the application provides a photovoltaic support single-pile overturning checking method, which comprises the following steps:

[0007] constructing a photovoltaic support single-pile structure analysis diagram based on the overall analysis result of the photovoltaic support;

[0008] establishing a row-pile support model based on the photovoltaic support single-pile structure analysis diagram by using the unit calculation module of the Lizheng deep foundation pit software;

[0009] running the row-pile support model by using the unit calculation module of the Lizheng deep foundation pit software to obtain the anti-overturning performance of the photovoltaic support single pile;

[0010] checking the anti-overturning stability based on the anti-overturning performance of the photovoltaic support single pile.

[0011] As a preferred embodiment of the application, the photovoltaic support single-pile structure analysis diagram comprises a pile top ground clearance, a pile penetration depth and a pile top load.

[0012] As a preferred embodiment of the application, the row-pile support model comprises a virtual soil layer thickness, an actual soil layer thickness and photovoltaic support single-pile structure data.

[0013] As a preferred embodiment of the present application, the virtual soil layer thickness is the height of the pile exposed to the ground, and the gravity, cohesion and internal friction angle of the virtual soil layer are all set to preset values, simulating the pile body part exposed to the ground not bearing soil pressure.

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

[0015] As a preferred embodiment of the present application, the horizontal thrust of the pile top and the soil pressure calculation method are set before the operation of the pile support model by the Lizheng deep foundation pit software, and the active soil pressure, passive soil pressure, anti-overturning bending moment at the pile bottom and fulcrum force of the photovoltaic support single pile are obtained after the model operation.

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

[0017]

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

[0019] The anti-overturning stability threshold is set, and if the anti-overturning stability of the photovoltaic support single pile calculated is greater than the preset threshold, it is considered that the anti-overturning stability of the photovoltaic support single pile is qualified.

[0020] On the other hand, the present application also provides an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to realize the method as described in any embodiment of the present application.

[0021] In another aspect, the present application also provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the method as described in any embodiment of the present application.

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

[0023] 1. This invention utilizes the computational advantages of Lizheng Deep Foundation Pit software in geotechnical engineering. By establishing a virtual soil layer to simulate the stress mode of photovoltaic support, it can perform single pile overturning resistance verification of photovoltaic support more efficiently and accurately than existing methods. For photovoltaic projects with complex and variable terrain and geological conditions, it greatly improves the verification efficiency and accuracy. Attached Figure Description

[0024] Figure 1 This is a flowchart of the method of the present invention;

[0025] Figure 2 This is a structural diagram of the pile support model of the present invention. Detailed Implementation

[0026] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be understood that the step numbers used in the text are for ease of description only and are not intended to limit the order in which the steps are performed.

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

[0029] The terms “comprising” and “including” indicate the presence of the described feature, whole, step, operation, element and / or component, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0030] The term “and / or” refers to any combination of one or more of the associated listed items, as well as all possible combinations, and includes these combinations.

[0031] Example 1:

[0032] See Figure 1 A method for verifying the overturning resistance of a single photovoltaic support pile includes the following steps:

[0033] A structural analysis diagram of a single pile of a photovoltaic support system is constructed based on the overall analysis results of the photovoltaic support system.

[0034] A pile support model was established based on the single pile structure analysis diagram of the photovoltaic support using the unit calculation module of the Lizheng deep foundation pit software.

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

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

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

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

[0039] As a preferred embodiment of the present embodiment, the virtual soil layer thickness is the height of the pile exposed to the ground, and the gravity, cohesion, and internal friction angle of the virtual soil layer are all set to a value close to 0, such as 0.01, to simulate the part of the pile that is not subjected to soil pressure exposed to the ground.

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

[0041] As a preferred embodiment of the present embodiment, before running the vertical row pile support model through the Lizheng deep foundation pit software, the horizontal thrust at the top of the pile (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 at the bottom of the pile, and fulcrum force of the single pile of the photovoltaic support are obtained. For the inner support fulcrum force, it is determined by the compression resistance of the inner support. 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 the present embodiment, the soil pressure calculation method includes:

[0043] (1) For silt and silt soil, the soil pressure should be calculated using the consolidated undrained test strength index and the saturated gravity of the soil.

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

[0045] (3) For silty soil and clay soil, it is appropriate to calculate the soil pressure using the effective stress strength index and the effective gravity of the soil according to the water-soil separation principle. When there is engineering experience, the total stress strength index of the triaxial consolidated undrained test can also be used to calculate the soil pressure according to the water-soil combination principle.

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

[0047]

[0048] Kov represents the overturning stability of the single pile of the photovoltaic support; M a Pd represents the active earth pressure of the single pile of the photovoltaic support; M w M represents the overturning bending moment at the bottom of the single pile of the photovoltaic support; M p Pp represents the passive earth pressure of the single pile of the photovoltaic support; M z R represents the fulcrum force of the single pile of the photovoltaic support;

[0049] A threshold value of the overturning stability is set, and if the calculated overturning stability of the single pile of the photovoltaic support is greater than the preset threshold value, it is considered that the overturning stability of the single pile of the photovoltaic support is qualified.

[0050] Embodiment Two:

[0051] The embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the method according to any embodiment of the present application when executing the program.

[0052] Embodiment Three:

[0053] The embodiment provides a computer readable storage medium, which stores a computer program, and the program is executable on a processor to implement the method according to any embodiment of the present application.

[0054] In the embodiments of the present application, "at least one" refers to one or more, and "multiple" refers to two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Wherein A, B can be singular or plural. The character " / " generally represents that the front and rear associated objects are in an "or" relationship. "At least one of the following" and the like means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b and c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c can be single or multiple.

[0055] Those skilled in the art can realize that the units and algorithm steps described in the embodiments disclosed in the present application can be realized by electronic hardware, computer software and combination of electronic hardware and computer software. Whether the functions are realized by hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

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

[0057] In several embodiments provided in the present application, any function realized in the form of a software function unit and sold or used as an independent product can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the parts of the technical solutions that make contributions to the prior art or the parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0058] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent flow transformation obtained by using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A method for verifying the overturning resistance of a single pile in a photovoltaic support system, characterized in that, Includes the following steps: A structural analysis diagram of a single pile of a photovoltaic support system is constructed based on the overall analysis results of the photovoltaic support system. A pile support model was established based on the single pile structure analysis diagram of the photovoltaic support using the unit calculation module of the Lizheng deep foundation pit software. The overturning resistance performance of a single pile of a photovoltaic support system was obtained by running the unit calculation module of the Lizheng deep foundation pit software to run the pile support model. Overturning stability verification based on the overturning performance of a single photovoltaic support pile; The pile support model includes virtual soil layer thickness, actual soil layer thickness, and photovoltaic support single pile structure data. The thickness of the virtual soil layer is taken as the height of the pile exposed above the ground. The unit 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 that is exposed above the ground and does not bear soil pressure. The actual soil layers include multiple layers. Based on the actual soil layer type and parameters in engineering geology, the thickness, unit weight, cohesion and internal friction angle values ​​of each soil layer are set. Before running the pile support model using the Lizheng Deep Foundation Pit software, the horizontal thrust and earth pressure calculation methods at the pile top are set. After the model runs, the active earth pressure, passive earth pressure, overturning moment at the pile bottom, and support force of a single photovoltaic support pile are obtained. The formula for verifying the overturning stability of a single photovoltaic support pile is: in: This indicates the overturning stability of a single pile in a photovoltaic support system. This represents the active earth pressure of a single pile in a photovoltaic support system. This indicates the overturning moment at the bottom of a single pile in a photovoltaic support system. This represents the passive earth pressure on a single pile of a photovoltaic support system. This indicates the fulcrum force of a single pile in a photovoltaic support system; A threshold for overturning stability is set. If the calculated overturning stability of a single photovoltaic support pile is greater than the preset threshold, then the overturning stability of the single photovoltaic support pile is considered to be qualified.

2. The method for verifying the overturning resistance of a single photovoltaic support pile according to claim 1, characterized in that, The structural analysis diagram of the photovoltaic support monopile includes the pile top height above the ground, the pile depth into the soil, and the pile top load.

3. 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, it implements the method as described in any one of claims 1 to 2.

4. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1 to 2.

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