Ground analysis method, device, computer equipment, readable storage medium and program product

Abstract

The present application relates to a foundation analysis method, device, computer equipment, readable storage medium and program product, and relates to the field of foundation processing technology. The method comprises: in response to a foundation analysis instruction for a target foundation, obtaining foundation parameters of the target foundation; based on the foundation parameters, performing three-dimensional finite element modeling on the target foundation to obtain a three-dimensional finite element model of the target foundation; determining the force parameters of the target foundation; inputting the force parameters into the three-dimensional finite element model, performing a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtaining a bearing capacity analysis result of the target foundation. The use of this method can ensure the accuracy of the verification of the foundation bearing effect.

Description

Technical Field

[0001] The present application relates to the field of foundation processing technology, and in particular to a foundation analysis method, device, computer equipment, readable storage medium and program product. Background Art

[0002] In the field of nuclear power, nuclear safety-related buildings (structures) such as nuclear island buildings have higher safety requirements. Replacement padding is a widely used foundation treatment method. Its basic principle is to replace the soft natural soil layer at the bottom of the building with materials with higher bearing capacity to improve the bearing capacity of the foundation.

[0003] In this process, the actual bearing effect of the foundation needs to be verified. In the prior art, the bearing effect of the foundation is usually verified by referring to the standard documents for foundation bearing capacity verification. However, the standard documents are relatively one-sided and do not fully consider the actual application of the foundation, which can easily lead to inaccurate verification results. Summary of the invention

[0004] Based on this, it is necessary to provide a foundation analysis method, device, computer equipment, computer-readable storage medium and computer program product that can ensure the accuracy of foundation bearing effect verification in response to the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a foundation analysis method, comprising: in response to a foundation analysis instruction for a target foundation, obtaining foundation parameters of the target foundation; based on the foundation parameters, performing three-dimensional finite element modeling on the target foundation to obtain a three-dimensional finite element model of the target foundation; determining the force parameters of the target foundation; inputting the force parameters into the three-dimensional finite element model, and performing a bearing capacity analysis on the target foundation through the three-dimensional finite element model to obtain a bearing capacity analysis result of the target foundation.

[0006] In one of the embodiments, three-dimensional finite element modeling is performed on the target foundation to obtain a three-dimensional finite element model of the target foundation, including: performing three-dimensional finite element modeling on the upper building of the target foundation to obtain a finite element model of the upper structure of the target foundation; performing three-dimensional finite element modeling on the raft structure of the target foundation to obtain a raft finite element model of the target foundation; performing three-dimensional finite element modeling on the replacement layer of the target foundation to obtain a replacement layer finite element model of the target foundation; performing three-dimensional finite element modeling on the foundation soil layer of the target foundation to obtain a foundation soil layer finite element model of the target foundation; combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a three-dimensional finite element model of the target foundation.

[0007] In one of the embodiments, the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model are combined to obtain a three-dimensional finite element model of the target foundation, including: combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a combined finite element model; in the combined finite element model, establishing a first contact pair and a second contact pair to obtain a three-dimensional finite element model of the target foundation; the first contact pair is a contact pair between the raft finite element model and the replacement layer finite element model; the second contact pair is a contact pair between the foundation soil layer finite element model and the replacement layer finite element model.

[0008] In one of the embodiments, force parameters are input into a three-dimensional finite element model, and a bearing capacity analysis is performed on a target foundation through the three-dimensional finite element model to obtain a bearing capacity analysis result of the target foundation, including: inputting force parameters into a three-dimensional finite element model, and performing pressure analysis on a first contact pair and a second contact pair through the three-dimensional finite element model to obtain a first contact pressure of the first contact pair and a second contact pressure of the second contact pair; based on the first contact pressure and the second contact pressure, a bearing capacity analysis is performed on the target foundation to obtain a bearing capacity analysis result of the target foundation.

[0009] In one of the embodiments, a bearing capacity analysis is performed on the target foundation based on the first contact pressure and the second contact pressure to obtain a bearing capacity analysis result of the target foundation, including: obtaining a standard pressure value of the replacement layer, and performing a bearing capacity analysis on the replacement layer of the target foundation based on comparison results between the first contact pressure and the second contact pressure and the standard pressure value, to obtain a first bearing capacity analysis result of the replacement layer; determining a second bearing capacity analysis result of the foundation soil layer based on the second contact pressure; and using the first bearing capacity analysis result and the second bearing capacity analysis result together as the bearing capacity analysis result of the target foundation.

[0010] In one of the embodiments, the first contact pair includes multiple contact points, and the first contact pressure includes a target contact pressure at each contact point; the method also includes: obtaining the bottom area of ​​the raft structure; based on the bottom area and each target contact pressure, performing a ground contact rate analysis on the target foundation to obtain the ground contact rate of the target foundation.

[0011] In the second aspect, the present application also provides a foundation analysis device, including: a foundation parameter acquisition module, used to obtain the foundation parameters of the target foundation in response to the foundation analysis instruction for the target foundation; a three-dimensional finite element modeling module, used to perform three-dimensional finite element modeling on the target foundation based on the foundation parameters, and obtain a three-dimensional finite element model of the target foundation; a force parameter acquisition module, used to determine the force parameters of the target foundation; a foundation analysis module, used to input the force parameters into the three-dimensional finite element model, perform a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtain a bearing capacity analysis result of the target foundation.

[0012] On the third aspect, the present application also provides a computer device, including a memory and a processor, the memory storing a computer program, and the processor implementing the following steps when executing the computer program: in response to a foundation analysis instruction for a target foundation, obtaining foundation parameters of the target foundation; based on the foundation parameters, performing three-dimensional finite element modeling on the target foundation to obtain a three-dimensional finite element model of the target foundation; determining the force parameters of the target foundation; inputting the force parameters into the three-dimensional finite element model, and performing a bearing capacity analysis on the target foundation through the three-dimensional finite element model to obtain a bearing capacity analysis result of the target foundation.

[0013] In a fourth aspect, the present application also provides a computer-readable storage medium having a computer program stored thereon, which implements the following steps when the computer program is executed by a processor: in response to a foundation analysis instruction for a target foundation, obtain foundation parameters of the target foundation; based on the foundation parameters, perform three-dimensional finite element modeling on the target foundation to obtain a three-dimensional finite element model of the target foundation; determine the force parameters of the target foundation; input the force parameters into the three-dimensional finite element model, and perform a bearing capacity analysis on the target foundation through the three-dimensional finite element model to obtain a bearing capacity analysis result of the target foundation.

[0014] In a fifth aspect, the present application also provides a computer program product, including a computer program, which implements the following steps when executed by a processor: in response to a foundation analysis instruction for a target foundation, obtain foundation parameters of the target foundation; based on the foundation parameters, perform three-dimensional finite element modeling on the target foundation to obtain a three-dimensional finite element model of the target foundation; determine the force parameters of the target foundation; input the force parameters into the three-dimensional finite element model, and perform a bearing capacity analysis on the target foundation through the three-dimensional finite element model to obtain a bearing capacity analysis result of the target foundation.

[0015] The above-mentioned foundation analysis method, device, computer equipment, computer-readable storage medium and computer program product, in response to the foundation analysis instruction for the target foundation, first obtain the foundation parameters of the target foundation. Based on the foundation parameters, a three-dimensional finite element model of the target foundation is established to simulate the scene of the real structure of the target foundation. Then the force parameters of the target foundation are input into the three-dimensional finite element model, and the various force conditions of the target foundation in actual application are simulated through the three-dimensional finite element model, so as to perform a bearing capacity analysis on the target foundation and obtain a more accurate and reliable bearing capacity analysis result. In this way, the present application analyzes its bearing effect by performing three-dimensional finite element modeling on the foundation and simulating various force conditions of the foundation. There is no need to rely on specification documents to verify the foundation bearing effect, which not only ensures the accuracy of the foundation bearing effect verification, but also improves the stability and safety of the foundation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is an application environment diagram of a foundation analysis method in one embodiment;

[0018] Figure 2 A schematic diagram of a flow chart of a foundation analysis method in one embodiment;

[0019] Figure 3 is a schematic vertical cross-sectional view of a target foundation in one embodiment;

[0020] Figure 4 is a schematic diagram of a three-dimensional finite element model of a target foundation in one embodiment;

[0021] Figure 5 A schematic diagram of a process for establishing a three-dimensional finite element model of a target foundation in one embodiment;

[0022] Figure 6 A schematic diagram of a process of setting a contact pair in one embodiment;

[0023] Figure 7 A schematic diagram of a bearing capacity analysis process of a target foundation in one embodiment;

[0024] Figure 8 A schematic diagram of a bearing capacity analysis process of a target foundation in another embodiment;

[0025] Fig. 9A schematic diagram of a flow chart of a foundation analysis method in a specific embodiment;

[0026] Fig.10 It is a vertical cross-sectional schematic diagram of a concrete replacement foundation in a specific embodiment;

[0027] Fig.11 A schematic diagram of the position of a stratum plane in a specific embodiment;

[0028] Fig.12 It is a schematic diagram of a three-dimensional finite element model of an entire concrete replacement foundation in a specific embodiment;

[0029] Fig.13 It is a cross-sectional schematic diagram of a three-dimensional finite element model of an entire concrete-replaced foundation in a specific embodiment;

[0030] Fig.14 is a schematic diagram of a three-dimensional finite element model of a superstructure in a specific embodiment;

[0031] Fig.15 is a schematic diagram of a three-dimensional finite element model of a raft in a specific embodiment;

[0032] Fig.16 It is a schematic diagram of a three-dimensional finite element model of a concrete replacement layer in a specific embodiment;

[0033] Fig.17 A schematic diagram of a three-dimensional finite element model of foundation soil in a specific embodiment;

[0034] Fig.18 is a schematic diagram of a three-dimensional finite element model of a contact pair in a specific embodiment;

[0035] Fig.19 A pressure cloud diagram of the bottom of a raft in a specific embodiment;

[0036] Fig. 20 A pressure cloud diagram of the bottom of the concrete replacement layer in a specific embodiment;

[0037] Fig.21 A cloud diagram showing the ratio between the bottom pressure of the raft and the design value of the compressive strength in a specific embodiment;

[0038] Fig. 22 A cloud diagram showing the ratio of the bottom pressure of the concrete replacement layer to the design value of the compressive strength in a specific embodiment;

[0039] Fig.23 The bottom pressure of the concrete replacement layer in a specific embodiment is Ratio cloud diagram of

[0040] Fig.24 is a structural block diagram of a ground foundation analysis device in one embodiment;

[0041] Fig.25 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] The foundation analysis method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. The terminal 102 can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, and Internet of Things devices. The server 104 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services.

[0044] Specifically, in response to the foundation analysis instruction for the target foundation initiated by the terminal 102, the server 104 first obtains the foundation parameters of the target foundation, and based on the foundation parameters, performs three-dimensional finite element modeling on the target foundation to obtain a three-dimensional finite element model of the target foundation. Then, the force parameters of the target foundation are determined, and the force parameters are input into the three-dimensional finite element model. Finally, the bearing capacity analysis of the target foundation is performed through the three-dimensional finite element model to obtain the bearing capacity analysis result of the target foundation.

[0045] In an exemplary embodiment, Figure 2 As shown, a foundation analysis method is provided, which is applied to Figure 1 The server 104 in FIG. 1 is used as an example to illustrate, including:

[0046] Step S202, in response to a foundation analysis instruction for a target foundation, obtaining foundation parameters of the target foundation.

[0047] The target foundation may refer to a foundation for which the bearing effect needs to be verified. The foundation analysis instruction may also be understood as a foundation verification instruction, i.e., an instruction for verifying the bearing effect of the target foundation. The foundation parameters may refer to relevant parameters for constructing a three-dimensional finite element model of the target foundation.

[0048] Optionally, the target foundation can be a concrete replacement foundation. It should be noted that when replacing the cushion layer in civil engineering, the commonly used replacement materials are sand and gravel, silty clay, gray soil, fly ash, slag, other industrial waste residues, geosynthetics reinforced cushion layers, etc. In the field of nuclear power, nuclear safety-related buildings (structures) have higher safety requirements than civil engineering. Nuclear safety-related buildings (structures) are usually required to be located on bedrock. Therefore, the soft soil layer above the bedrock needs to be replaced, that is, the cushion layer is replaced. However, the stiffness and bearing capacity of the replacement materials in civil engineering are relatively small, and cannot meet the deformation and foundation bearing capacity requirements of nuclear safety-related buildings (structures). Therefore, for nuclear safety-related buildings (structures), concrete is usually chosen as the replacement material.

[0049] Optionally, the foundation parameters may include but are not limited to: the superstructure of the target foundation, the structural parameter information of the superstructure, the parameter information of the foundation, the stratum distribution information of the target foundation, the elastic modulus of each layer of soil in the target foundation, the bearing capacity characteristic value of the bottom soil layer of the concrete replacement layer, the groundwater level, i.e., the elevation of the groundwater surface relative to the reference surface, the thickness of the concrete replacement layer, the replacement range, the concrete strength grade, the elastic modulus, the density, the design value of the compressive strength, etc. Of course, in practical applications, other foundation parameters can be defined according to actual conditions, and this embodiment does not limit this.

[0050] For ease of understanding, take the concrete replacement foundation as an example. Figure 3 A vertical cross-sectional diagram of a concrete replacement foundation is shown. It can be seen that the entire concrete replacement foundation structure includes an upper structure, a foundation, a concrete replacement layer, and foundation soil (stratum 1, stratum 2, stratum 3, stratum 4).

[0051] For example, when the server receives the foundation analysis instruction for the target foundation initiated by the terminal, it first collects the foundation parameters of the target foundation for subsequent construction of the three-dimensional finite element model of the target foundation. The foundation parameters can be directly obtained by the server from the background database, or collected by a data acquisition device deployed in the target foundation, such as a sensor or a monitor, or other methods, which are not limited in this embodiment.

[0052] Step S204: Based on the foundation parameters, three-dimensional finite element modeling is performed on the target foundation to obtain a three-dimensional finite element model of the target foundation.

[0053] Among them, three-dimensional finite element modeling is a mathematical calculation method that converts the actual structure into a discretized model composed of many small units, and solves the physical quantities such as stress and strain of each unit through mathematical equations, and finally obtains the response of the entire structure. In this embodiment, it can be understood that each layer structure of the target foundation is discretized and modeled. The three-dimensional finite element model is a virtual model obtained by three-dimensional finite element modeling of the target foundation. For ease of understanding, take the concrete replacement foundation as an example, Figure 4 A schematic diagram of a three-dimensional finite element model of a concrete replacement foundation is shown.

[0054] Exemplarily, after obtaining the foundation parameters of the target foundation, the server can perform three-dimensional finite element modeling on each layer structure of the target foundation based on these foundation parameters, thereby obtaining a three-dimensional finite element model of each layer structure, and these models together constitute the three-dimensional finite element model of the target foundation.

[0055] Optionally, the server can be implemented using a special three-dimensional finite element modeling tool, and of course other methods or tools can be selected for implementation, which is not limited in this embodiment. Preferably, this embodiment uses ANSYS finite element analysis software to build a three-dimensional finite element model of the target foundation.

[0056] Step S206, determining the force parameters of the target foundation.

[0057] Among them, the force parameters may refer to the parameters of various forces of the target foundation. It is understandable that the force parameters may include the axial force and overturning moment at the bottom of the target foundation. Further, the axial force may include water buoyancy, i.e., the upward buoyancy generated on the structure due to the rise in water level, and vertical seismic force, i.e., the force in the vertical direction generated by the earthquake. The overturning moment includes: the overturning moment in both directions of the earthquake or the overturning moment caused by wind, tornado, external explosion, etc. It should be noted that the overturning moment refers to the moment that causes the structure to have a tendency to overturn around a certain axis.

[0058] Exemplarily, the server further obtains the axial force and overturning moment corresponding to the target foundation, and converts the axial force and overturning moment into an inertial force acting on the superstructure and foundation as input of the three-dimensional finite element model. The direction of the inertial force is divided into a direction opposite to gravity and two horizontal directions.

[0059] In one example, the calculation expression of the inertial force in the opposite direction of gravity can be:

[0060]

[0061] Among them, 9.81 represents the acceleration due to gravity, which is measured in m / s² (meters per square second), i.e. the self-weight inertia force of the superstructure and foundation. It represents the vertical force of the same combined working condition such as water buoyancy and vertical seismic force, and the unit is KN (kilonewton). m represents the total weight of the superstructure and foundation, and the unit is kg (kilogram).

[0062] The calculation expressions of the inertial forces in the two horizontal directions can be:

[0063]

[0064]

[0065] in, , are the inertial forces in the horizontal x (horizontal axis) direction and the horizontal y (vertical axis) direction, , are the input overturning moments around the horizontal x direction and the horizontal y direction, , The overturning moments around the horizontal x direction and horizontal y direction based on the foundation are obtained by applying unit inertia force in the horizontal y direction and horizontal x direction respectively.

[0066] Step S208, inputting the force parameters into the three-dimensional finite element model, performing a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtaining a bearing capacity analysis result of the target foundation.

[0067] Among them, the bearing capacity analysis results can be used to characterize the bearing effect of the target foundation.

[0068] Exemplarily, after the server converts the force parameters into inertia force, the inertia force is input into the three-dimensional finite element model. That is, the inertia force can be used as an external load of the three-dimensional finite element to simulate the actual force condition of the target foundation. In this process, the server can calculate the bearing pressure of the target foundation according to the actual force condition of the target foundation, and thus determine the bearing capacity analysis result of the target foundation according to the bearing pressure.

[0069] In this embodiment, the server responds to the foundation analysis instruction for the target foundation and first obtains the foundation parameters of the target foundation. Based on the foundation parameters, a three-dimensional finite element model of the target foundation is established to simulate the scene of the real structure of the target foundation. Then the force parameters of the target foundation are input into the three-dimensional finite element model, and the various force conditions of the target foundation in actual application are simulated through the three-dimensional finite element model, so as to perform a bearing capacity analysis on the target foundation and obtain a more accurate and reliable bearing capacity analysis result. In this way, the present embodiment analyzes its bearing effect by performing three-dimensional finite element modeling on the foundation and simulating various force conditions of the foundation. There is no need to rely on specification documents to verify the bearing effect of the foundation, which not only ensures the accuracy of the verification of the bearing effect of the foundation, but also improves the stability and safety of the foundation structure.

[0070] In an exemplary embodiment, Figure 5 As shown, a three-dimensional finite element model is performed on the target foundation to obtain a three-dimensional finite element model of the target foundation, including:

[0071] Step S502, performing three-dimensional finite element modeling on the building above the target foundation to obtain a finite element model of the structure above the target foundation.

[0072] The upper building can be understood as a building above the target foundation, or a building located above the foundation, such as a reinforced concrete wall panel structure. The upper structure finite element model refers to a three-dimensional finite element model of the upper structure.

[0073] Exemplarily, after acquiring the foundation parameters, the server may perform three-dimensional finite element modeling on the superstructure of the target foundation according to the parameter information of the superstructure, thereby obtaining a three-dimensional finite element model of the superstructure of the target foundation.

[0074] Step S504, performing three-dimensional finite element modeling on the raft structure of the target foundation to obtain a finite element model of the raft of the target foundation.

[0075] Among them, the raft structure is the foundation of the target foundation. The raft is a concrete slab with the foundation below and the upper building, i.e., the load-bearing columns and walls, etc. above. The raft finite element model refers to the three-dimensional finite element model of the raft structure.

[0076] Exemplarily, after acquiring the foundation parameters, the server may perform three-dimensional finite element modeling on the foundation raft of the target foundation according to the foundation parameter information, thereby obtaining a three-dimensional finite element model of the foundation raft of the target foundation.

[0077] Step S506, performing three-dimensional finite element modeling on the replacement layer of the target foundation to obtain a finite element model of the replacement layer of the target foundation.

[0078] The replacement layer is a layer in the target foundation that is used to replace the cushion layer. The replacement layer finite element model refers to a three-dimensional finite element model of the replacement layer.

[0079] Exemplarily, after obtaining the foundation parameters, the server can perform three-dimensional finite element modeling of the replacement layer of the target foundation according to the bearing capacity characteristic value of the soil layer at the bottom of the replacement layer, the thickness of the replacement layer, the replacement range, etc., thereby obtaining a three-dimensional finite element model of the replacement layer of the target foundation.

[0080] Step S508, performing three-dimensional finite element modeling on the foundation soil layer of the target foundation to obtain a finite element model of the foundation soil layer of the target foundation.

[0081] The foundation soil layer refers to the foundation layer located at the bottom of the target foundation, or the foundation layer located below the foundation and the replacement layer. The foundation soil layer finite element model refers to a three-dimensional finite element model of the foundation soil layer.

[0082] Exemplarily, after acquiring the foundation parameters, the server may perform three-dimensional finite element modeling on the foundation soil layer of the target foundation according to the distribution information of the foundation layer, etc., so as to obtain a three-dimensional finite element model of the foundation soil layer of the target foundation.

[0083] Step S510, combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a three-dimensional finite element model of the target foundation.

[0084] Exemplarily, the server combines the separately constructed upper structure finite element model, raft finite element model, replacement layer finite element model, and foundation soil layer finite element model to obtain a complete three-dimensional finite element model of the target foundation.

[0085] Optionally, the construction order of the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model is not in particular order. They can be constructed in the order of the upper structure to the lower structure, or each layer of the structure can be three-dimensionally finite element modeled simultaneously. Of course, the construction order can also be customized, and this embodiment does not impose any restrictions.

[0086] Optionally, in practical applications, three-dimensional finite element modeling can also be performed on other structural parts of the entire foundation. Three-dimensional finite element modeling can even be performed on the upper structure, raft, replacement layer, and internal specific structure in the foundation soil layer. This embodiment does not limit this either.

[0087] In this embodiment, by performing three-dimensional finite element modeling on the upper structure, raft, replacement layer, and foundation soil layer of the target foundation respectively, the upper structure finite element model, raft finite element model, replacement layer finite element model, and foundation soil layer finite element model of the target foundation are obtained, thereby combining them into a complete three-dimensional finite element model of the target foundation. This can not only improve the accuracy and completeness of the three-dimensional finite element model of the target foundation, but also facilitate the subsequent targeted analysis of the bearing effect of each layer structure, thereby improving the accuracy and reliability of the foundation bearing effect verification.

[0088] In an exemplary embodiment, Figure 6 As shown, the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model are combined to obtain a three-dimensional finite element model of the target foundation, including:

[0089] Step S602, combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a combined finite element model.

[0090] Step S604, in the combined finite element model, establish a first contact pair and a second contact pair to obtain a three-dimensional finite element model of the target foundation; the first contact pair is the contact pair between the raft finite element model and the replacement layer finite element model; the second contact pair is the contact pair between the foundation soil layer finite element model and the replacement layer finite element model.

[0091] Among them, the combined finite element model refers to a three-dimensional model obtained by splicing and combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model. It should be noted that in order to facilitate the subsequent analysis of the pressure between the layers of structure, and thus analyze the bearing effect of the foundation, in this embodiment, a contact pair will be added to the combined three-dimensional finite element model. Contact pairs can be used to define the interaction relationship between two or more objects or structures. In this embodiment, they can be used to simulate the contact problem between the layers of structure in the target foundation. In this embodiment, two contact pairs are mainly added, namely the first contact pair and the second contact pair. The first contact pair is the contact pair between the raft finite element model and the replacement layer finite element model, that is, Figure 3 and Figure 4 The second contact pair is the contact pair between the finite element model of the foundation soil layer and the finite element model of the replacement layer, that is, Figure 3 and Figure 4 Contact pair 2 in .

[0092] Optionally, the contact pair in this embodiment belongs to a surface-to-surface contact pair. That is, the first contact pair is a contact pair between the bottom of the raft finite element model and the top of the replacement layer finite element model. The second contact pair is a contact pair between the top of the foundation soil layer finite element model and the bottom of the replacement layer finite element model.

[0093] Optionally, the contact pair can be set to contact in the direction of gravity, and when the contact is separated, the pressure in the direction of gravity is equal to 0 to simulate the state of being pulled apart. In other words, only when the tension is applied in the direction of gravity, the pressure in the direction of gravity is equal to 0, the contact pair will fail, and the foundation structure corresponding to the contact pair will be separated.

[0094] Optionally, this embodiment will also constrain the horizontal translation and rotation around the gravity direction of the bottom of the raft finite element model and the bottom of the replacement layer finite element model, and constrain the translation and rotation around the gravity direction of the bottom of the foundation soil finite element model. In other words, this embodiment will restrict the bottom of the raft and the bottom of the replacement layer from moving in the horizontal direction and rotating around the gravity direction. Similarly, the bottom of the foundation soil layer will also be restricted from moving in the horizontal direction and rotating around the gravity direction. Of course, in actual applications, other constraints can be defined according to actual conditions, and this embodiment does not limit this.

[0095] Exemplarily, after the server splices and combines the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model, a combined finite element model can be obtained. In this combined finite element model, the server will set a contact pair between the bottom of the raft finite element model and the top of the replacement layer finite element model, and a contact pair between the top of the foundation soil layer finite element model and the bottom of the replacement layer finite element model. In this way, the pressure on each contact pair can be analyzed to analyze the pressure on the foundation structure corresponding to the contact pair, and then the bearing effect of the foundation structure can be analyzed.

[0096] In this embodiment, by setting contact pairs between the bottom of the raft finite element model and the top of the replacement layer finite element model, and between the top of the foundation soil layer finite element model and the bottom of the replacement layer finite element model, it is convenient to directly calculate the pressure exerted on the contact pairs, so as to analyze the bearing effect of the foundation structure corresponding to the contact pairs based on the pressure, thereby ensuring the accuracy and reliability of the verification of the foundation bearing effect.

[0097] In an exemplary embodiment, Figure 7 As shown, the force parameters are input into the three-dimensional finite element model, and the bearing capacity analysis of the target foundation is performed through the three-dimensional finite element model to obtain the bearing capacity analysis results of the target foundation, including:

[0098] Step S702, inputting force parameters into a three-dimensional finite element model, and performing pressure analysis on the first contact pair and the second contact pair through the three-dimensional finite element model to obtain a first contact pressure of the first contact pair and a second contact pressure of the second contact pair.

[0099] Among them, the first contact pressure refers to the pressure exerted on the first contact pair under the action of the force parameter, and the second contact pressure refers to the pressure exerted on the second contact pair under the action of the force parameter. It can be understood that the first contact pair is the contact pair between the bottom of the raft finite element model and the top of the replacement layer finite element model, and the second contact pair is the contact pair between the top of the foundation soil layer finite element model and the bottom of the replacement layer finite element model. Therefore, the first contact pressure can be understood as the bottom pressure of the raft, that is, the foundation, and the second contact pressure can be understood as the bottom pressure of the replacement layer.

[0100] Optionally, the first contact pressure and the second contact pressure may be output by a three-dimensional finite element modeling tool. Of course, the calculation method of the contact pressure may also be customized, and this embodiment does not limit this.

[0101] Optionally, the first contact pressure and the second contact pressure can be visualized in the form of cloud diagrams to show the pressure changes of the contact pair under different inertial forces, so that the user can intuitively understand the pressure changes of the contact pair, and thus understand the pressure changes of the foundation structure corresponding to the contact pair. Of course, in practical applications, other visualization methods can also be used to show the changes of the first contact pressure and the second contact pressure, which is not limited in this embodiment.

[0102] Exemplarily, the server adds the inertial force corresponding to the force parameter to the three-dimensional finite element model. The software used to construct the three-dimensional finite element model can automatically calculate the pressure change of the first contact pair and the second contact pair under the action of the inertial force, thereby outputting the contact pressure of the first contact pair and the contact pressure of the second contact pair.

[0103] Step S704: performing a bearing capacity analysis on the target foundation based on the first contact pressure and the second contact pressure to obtain a bearing capacity analysis result of the target foundation.

[0104] Among them, the bearing capacity is one of the important indicators reflecting the bearing effect of the foundation, so the bearing capacity of the foundation is mainly calculated in this embodiment. The bearing capacity analysis result is used to characterize the bearing effect of the target foundation. In this embodiment, the bearing capacity analysis result mainly includes the bearing capacity analysis result of the replacement layer and the bearing capacity analysis result of the foundation soil layer.

[0105] Exemplarily, after obtaining the contact pressures of the first contact pair and the second contact pair, the server can perform bearing capacity analysis on the replacement layer and the foundation soil layer respectively based on the first contact pressure and the second contact pressure, thereby obtaining bearing capacity analysis results of the replacement layer and the foundation soil layer.

[0106] In this embodiment, the contact pressures of the first contact pair and the second contact pair are calculated to analyze the bearing capacity analysis results of the replacement layer and the foundation soil layer, thereby improving the accuracy and comprehensiveness of the bearing capacity analysis results, thereby improving the accuracy and reliability of the verification of the foundation bearing effect.

[0107] In an exemplary embodiment, Figure 8 As shown, based on the first contact pressure and the second contact pressure, a bearing capacity analysis is performed on the target foundation to obtain a bearing capacity analysis result of the target foundation, including:

[0108] Step S802, obtaining a standard pressure value of the replacement layer, and performing a bearing capacity analysis on the replacement layer of the target foundation based on the comparison results between the first contact pressure and the second contact pressure and the standard pressure value, to obtain a first bearing capacity analysis result of the replacement layer.

[0109] The standard pressure value can be understood as a standard bearing capacity value pre-set for the replacement layer. The comparison result includes a first comparison result between the first contact pressure, i.e., the bottom pressure of the foundation, and the standard pressure value, and a second comparison result between the second contact pressure, i.e., the bottom pressure of the replacement layer, and the standard pressure value. The first bearing capacity analysis result can include a bearing capacity analysis result at the top of the replacement layer and a bearing capacity analysis result at the bottom of the replacement layer.

[0110] Exemplarily, the server obtains a standard bearing capacity value pre-set for the replacement layer, which may also be set in real time, and this embodiment does not limit this. After obtaining the standard bearing capacity value, the server may compare the first contact pressure, that is, the bottom pressure of the foundation, with the standard bearing capacity value, and may output a cloud map of the comparison result. And the second contact pressure, that is, the bottom pressure of the replacement layer, may be compared with the standard bearing capacity value, and a cloud map of the comparison result may also be output. When the first comparison result and / or the second comparison result is less than a preset comparison threshold value, such as 1, it is considered that the top of the replacement layer and / or the bottom of the replacement layer meet the bearing capacity requirements.

[0111] Step S804: determining a second bearing capacity analysis result of the foundation soil layer based on the second contact pressure.

[0112] Step S806: taking the first bearing capacity analysis result and the second bearing capacity analysis result together as the bearing capacity analysis result of the target foundation.

[0113] The second bearing capacity analysis result is used to characterize the bearing effect of the foundation soil layer.

[0114] For example, the standard pressure value of the replacement layer may include the standard pressure value of the bottom of the replacement layer under different working conditions, for example, assuming that the seismic bearing capacity of the foundation under earthquake conditions is , then the maximum pressure of the bottom surface of the replacement layer under earthquake conditions is , the modified characteristic value of the bearing capacity of the foundation soil layer can be measured under other working conditions , the modified characteristic value of bearing capacity refers to the value obtained after the characteristic value of foundation bearing capacity is corrected. The characteristic value of foundation bearing capacity refers to the pressure value corresponding to the deformation specified in the linear deformation section of the foundation soil pressure deformation curve determined by the load test. Therefore, the maximum pressure of the bottom surface of the replacement layer is When analyzing the bearing effect of the foundation soil layer, the second contact pressure is compared with the standard pressure value under different working conditions, that is, or The comparison is performed, and if the ratio obtained is less than a preset comparison threshold value, such as 1, it is considered that the foundation soil layer meets the bearing capacity requirements. Finally, the first bearing capacity analysis result and the second bearing capacity analysis result are used together as the bearing capacity analysis result of the target foundation.

[0115] In an exemplary embodiment, since the first contact pair is in surface-to-surface contact, there may be multiple contact points, so the first contact pressure may include a target contact pressure for each contact point, where the target contact pressure refers to the pressure exerted on the contact point under the action of inertial force.

[0116] The foundation analysis method also includes: obtaining the bottom area of ​​the raft structure; and performing a ground contact rate analysis on the target foundation based on the bottom area and each target contact pressure to obtain the ground contact rate of the target foundation.

[0117] Among them, the ground contact rate refers to the raft structure and can be used to characterize the stress degree of the raft structure.

[0118] Exemplarily, from the target contact pressures of each contact point, contact pressures with target contact pressures greater than zero are screened out, and the target areas corresponding to these contact pressures greater than zero, that is, the areas of the contact points corresponding to these contact pressures greater than zero, are counted.

[0119] In one example, the calculation expression of the target area may be:

[0120]

[0121] in, represents the target area, represents the unit area of ​​the contact points where the target contact pressure is greater than zero, and n represents the number of contact points where the target contact pressure is greater than zero.

[0122] Finally, the ratio between the target area and the bottom area of ​​the raft structure is calculated, which is the ground contact rate of the raft structure. In one example, the ground contact rate can be calculated as:

[0123]

[0124] Where A represents the bottom area of ​​the raft structure.

[0125] Optionally, the server can compare the grounding rate with the standard value of the grounding rate to evaluate whether the raft structure meets the grounding rate requirement. For example, assuming that the grounding rate standard value of the raft structure should be greater than 75% under the condition of a safe earthquake, that is, a low level of ground motion. If it is greater than 75%, it is considered that the current raft structure meets the grounding rate requirements, otherwise it does not meet the requirements. Under the operating limit safety earthquake action, that is, the grounding rate standard value of the raft structure should be greater than 50%. If it is greater than 50%, it is considered that the current raft structure meets the ground contact ratio requirement, otherwise it does not.

[0126] In this embodiment, by analyzing the bearing capacity of the replacement layer and the foundation soil layer and calculating the ground contact ratio of the raft structure, the comprehensiveness of the foundation bearing effect verification is improved, thereby ensuring the accuracy of the foundation bearing effect verification.

[0127] In a specific embodiment, if Fig. 9 As shown, the steps of the foundation analysis method include:

[0128] S1: Obtain foundation parameters of concrete replacement foundation.

[0129] S2: Based on the foundation parameters, a three-dimensional finite element model of the concrete replacement foundation is established.

[0130] S3: Calculate the inertia force acting on the three-dimensional finite element model through the axial force and overturning moment.

[0131] S4: Solve for the bottom pressure of the raft slab and the bottom pressure of the concrete replacement layer.

[0132] S5: Verify the bearing capacity of the concrete replacement layer, verify the bearing capacity of the foundation soil, and verify the ground connection rate of the raft slab.

[0133] in, Fig.10 The vertical section diagram of the concrete replacement foundation is shown. There is fully weathered granite (corresponding to Figure 3 Layer 3), strongly weathered granite (corresponding to Figure 3 Layer 2), and medium weathered granite (corresponding to Figure 3 The schematic diagram of the stratigraphic plane position is as follows Fig.11As shown in the figure, the black box is the location of nuclear safety-related buildings (structures), such as the nuclear island, with a size of 60m (meters) * 40m. The upper structure is an 8-story reinforced concrete wall slab structure, and the foundation is a reinforced concrete raft slab with a thickness of 2m. The upper structure and raft slab are both made of C45 concrete. There are four layers in the stratum, and the thickness, elastic modulus, and bearing capacity characteristic values ​​of each soil layer are shown in Table 1. The strongly weathered granite is located in the middle, and the groundwater level is located at the ground.

[0134] Table 1

[0135]

[0136] The thickness of the concrete replacement layer is 4m, the replacement range is 60mx40m, the concrete strength grade is C20, and the elastic modulus is 2.55*10 4 N / mm 2 (Newton / square meter), the floating density is 1400kg / m 3 (kg / m3), the design value of compressive strength, that is, the standard pressure value of the replacement layer, is 9.6N / mm 2 .

[0137] The three-dimensional finite element model of the concrete replacement foundation is as follows: Fig.12 As shown, the cross-sectional diagram is Fig.13 As shown in Figure 2. Among them, the three-dimensional finite element model of the upper structure is shown in Figure 2. Fig.14 The three-dimensional finite element model of the raft is shown in Fig.15 As shown; the three-dimensional finite element model of the concrete replacement layer is as follows Fig.16 As shown; the three-dimensional finite element model of the foundation soil is as follows Fig.17 As shown; the three-dimensional finite element model of the contact pair is as follows Fig.18 As shown, contact pair 1 is a contact pair set between the bottom of the three-dimensional finite element model of the raft and the top of the three-dimensional finite element model of the concrete replacement layer, and contact pair 2 is a contact pair set between the top of the three-dimensional finite element model of the foundation soil and the bottom of the three-dimensional finite element model of the concrete replacement layer. The contact pair is set to contact in the direction of gravity. When the contact is separated, the pressure in the direction of gravity is equal to 0. The elastic modulus of the foundation soil is set according to Table 1, and the elastic modulus and density of the concrete replacement layer are set. The horizontal translation and rotation around the gravity direction of the bottom of the raft and the bottom of the concrete replacement layer are constrained, and the horizontal translation and rotation around the gravity direction of the bottom of the foundation soil are constrained.

[0138] The water buoyancy is -192000KN, the vertical seismic force under the extreme safety earthquake condition is 100000KN; the overturning moment around the x direction is 6250000KNm (kilonewton meter); the overturning moment around the y direction is 2500000KNm. It can be calculated that the inertia force in the horizontal x direction is -2.03m / s², the inertia force in the horizontal y direction is 5.07m / s², and the inertia force in the opposite direction of gravity is 8.73m / s². The inertia forces in three directions are applied to the three-dimensional finite element model of the entire concrete replacement foundation.

[0139] The pressure at the bottom of the raft, also known as the first contact pressure, is shown in the cloud diagram Fig.19 As shown, the pressure at the bottom of the concrete replacement layer, i.e. the second contact pressure cloud diagram, is as follows Fig. 20 The ratio between the bottom pressure of the raft and the design value of the compressive strength is shown in Fig.21 As shown in the figure, it can be seen that the ratios are all less than 1, indicating that the top of the current concrete replacement layer meets the bearing capacity requirements. The ratio of the bottom pressure of the concrete replacement layer to the design value of the compressive strength is as follows: Fig. 22 As shown, similarly, the ratios are all less than 1, so the bottom of the concrete replacement layer also meets the compressive bearing capacity requirements.

[0140] According to the bearing capacity characteristic values ​​in Table 1, the fully weathered granite in the lower part of the replacement layer can be calculated. 823KPa, strongly weathered granite is 1187KPa. Therefore, the pressure at the bottom of the concrete replacement layer is The ratio of Fig.23 As shown, it can be seen that the ratios are all less than 1, so the bearing capacity of the foundation soil meets the requirements.

[0141] The area where the pressure on the bottom of the raft is greater than zero is 1568m 2 (square meters), the bottom area is 2400m 2 The grounding rate is 65.33%, which is greater than 50%, so the grounding rate of the raft meets the requirements.

[0142] In this embodiment, in response to the foundation analysis instruction for the target foundation, the foundation parameters of the target foundation are first obtained. Based on the foundation parameters, a three-dimensional finite element model of the target foundation is established to simulate the scene of the real structure of the target foundation. Then the force parameters of the target foundation are input into the three-dimensional finite element model, and the various force conditions of the target foundation in actual application are simulated through the three-dimensional finite element model, so as to perform a bearing capacity analysis on the target foundation and obtain a more accurate and reliable bearing capacity analysis result. In this way, the present embodiment analyzes its bearing effect by performing three-dimensional finite element modeling on the foundation and simulating various force conditions of the foundation. There is no need to rely on specification documents to verify the bearing effect of the foundation, which not only ensures the accuracy of the verification of the bearing effect of the foundation, but also improves the stability and safety of the foundation structure.

[0143] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0144] Based on the same inventive concept, the embodiment of the present application also provides a foundation analysis device for implementing the foundation analysis method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more foundation analysis device embodiments provided below can refer to the limitations on the foundation analysis method above, and will not be repeated here.

[0145] In an exemplary embodiment, Fig.24 As shown, a foundation analysis device is provided, including: a foundation parameter acquisition module 2402, used to obtain foundation parameters of a target foundation in response to a foundation analysis instruction for a target foundation; a three-dimensional finite element modeling module 2404, used to perform three-dimensional finite element modeling on the target foundation based on the foundation parameters to obtain a three-dimensional finite element model of the target foundation; a force parameter acquisition module 2406, used to determine the force parameters of the target foundation; a foundation analysis module 2408, used to input the force parameters into the three-dimensional finite element model, perform a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtain a bearing capacity analysis result of the target foundation.

[0146] In one of the embodiments, the three-dimensional finite element modeling module 2404 is also used to: perform three-dimensional finite element modeling on the upper building of the target foundation to obtain a finite element model of the upper structure of the target foundation; perform three-dimensional finite element modeling on the raft structure of the target foundation to obtain a raft finite element model of the target foundation; perform three-dimensional finite element modeling on the replacement layer of the target foundation to obtain a replacement layer finite element model of the target foundation; perform three-dimensional finite element modeling on the foundation soil layer of the target foundation to obtain a foundation soil layer finite element model of the target foundation; combine the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a three-dimensional finite element model of the target foundation.

[0147] In one embodiment, the three-dimensional finite element modeling module 2404 is also used to: combine the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a combined finite element model; in the combined finite element model, establish a first contact pair and a second contact pair to obtain a three-dimensional finite element model of the target foundation; the first contact pair is the contact pair between the raft finite element model and the replacement layer finite element model; the second contact pair is the contact pair between the foundation soil layer finite element model and the replacement layer finite element model.

[0148] In one embodiment, the foundation analysis module 2408 is also used to: input the force parameters into the three-dimensional finite element model, and perform pressure analysis on the first contact pair and the second contact pair through the three-dimensional finite element model to obtain the first contact pressure of the first contact pair and the second contact pressure of the second contact pair; based on the first contact pressure and the second contact pressure, perform a bearing capacity analysis on the target foundation to obtain a bearing capacity analysis result of the target foundation.

[0149] In one of the embodiments, the foundation analysis module 2408 is also used to: obtain a standard pressure value of the replacement layer, perform a bearing capacity analysis on the replacement layer of the target foundation based on the comparison results between the first contact pressure and the second contact pressure and the standard pressure value, and obtain a first bearing capacity analysis result of the replacement layer; determine a second bearing capacity analysis result of the foundation soil layer based on the second contact pressure; and use the first bearing capacity analysis result and the second bearing capacity analysis result together as the bearing capacity analysis result of the target foundation.

[0150] In one embodiment, the first contact pair includes multiple contact points, and the first contact pressure includes a target contact pressure at each contact point; the device is also used to: obtain the bottom area of ​​the raft structure; based on the bottom area and each target contact pressure, perform a ground contact rate analysis on the target foundation to obtain the ground contact rate of the target foundation.

[0151] Each module in the above-mentioned foundation analysis device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0152] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Fig.25As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store foundation analysis data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a foundation analysis method is implemented.

[0153] Those skilled in the art will understand that Fig.25 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0154] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the following steps when executing the computer program: in response to a foundation analysis instruction for a target foundation, obtaining foundation parameters of the target foundation; performing three-dimensional finite element modeling on the target foundation based on the foundation parameters to obtain a three-dimensional finite element model of the target foundation; determining force parameters of the target foundation; inputting the force parameters into the three-dimensional finite element model, performing a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtaining a bearing capacity analysis result of the target foundation.

[0155] In one embodiment, the processor also implements the following steps when executing the computer program: performing three-dimensional finite element modeling on the upper building of the target foundation to obtain a finite element model of the upper structure of the target foundation; performing three-dimensional finite element modeling on the raft structure of the target foundation to obtain a raft finite element model of the target foundation; performing three-dimensional finite element modeling on the replacement layer of the target foundation to obtain a replacement layer finite element model of the target foundation; performing three-dimensional finite element modeling on the foundation soil layer of the target foundation to obtain a foundation soil layer finite element model of the target foundation; combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a three-dimensional finite element model of the target foundation.

[0156] In one embodiment, when the processor executes the computer program, the following steps are also implemented: the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model are combined to obtain a combined finite element model; in the combined finite element model, a first contact pair and a second contact pair are established to obtain a three-dimensional finite element model of the target foundation; the first contact pair is the contact pair between the raft finite element model and the replacement layer finite element model; the second contact pair is the contact pair between the foundation soil layer finite element model and the replacement layer finite element model.

[0157] In one embodiment, when the processor executes the computer program, the following steps are also implemented: force parameters are input into a three-dimensional finite element model, and pressure analysis is performed on the first contact pair and the second contact pair through the three-dimensional finite element model to obtain a first contact pressure of the first contact pair and a second contact pressure of the second contact pair; based on the first contact pressure and the second contact pressure, a bearing capacity analysis is performed on the target foundation to obtain a bearing capacity analysis result of the target foundation.

[0158] In one embodiment, when the processor executes the computer program, the following steps are also implemented: obtaining a standard pressure value of the replacement layer, performing a bearing capacity analysis on the replacement layer of the target foundation based on the comparison results between the first contact pressure and the second contact pressure and the standard pressure value, and obtaining a first bearing capacity analysis result of the replacement layer; determining a second bearing capacity analysis result of the foundation soil layer based on the second contact pressure; and using the first bearing capacity analysis result and the second bearing capacity analysis result together as the bearing capacity analysis result of the target foundation.

[0159] In one embodiment, when the processor executes the computer program, the following steps are also implemented: obtaining the bottom area of ​​the raft structure; performing a ground contact rate analysis on the target foundation based on the bottom area and each target contact pressure to obtain the ground contact rate of the target foundation.

[0160] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: in response to a foundation analysis instruction for a target foundation, foundation parameters of the target foundation are acquired; based on the foundation parameters, three-dimensional finite element modeling is performed on the target foundation to obtain a three-dimensional finite element model of the target foundation; force parameters of the target foundation are determined; the force parameters are input into the three-dimensional finite element model, and a bearing capacity analysis is performed on the target foundation through the three-dimensional finite element model to obtain a bearing capacity analysis result of the target foundation.

[0161] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: performing three-dimensional finite element modeling on the upper building of the target foundation to obtain a finite element model of the upper structure of the target foundation; performing three-dimensional finite element modeling on the raft structure of the target foundation to obtain a raft finite element model of the target foundation; performing three-dimensional finite element modeling on the replacement layer of the target foundation to obtain a replacement layer finite element model of the target foundation; performing three-dimensional finite element modeling on the foundation soil layer of the target foundation to obtain a foundation soil layer finite element model of the target foundation; combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a three-dimensional finite element model of the target foundation.

[0162] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model are combined to obtain a combined finite element model; in the combined finite element model, a first contact pair and a second contact pair are established to obtain a three-dimensional finite element model of the target foundation; the first contact pair is the contact pair between the raft finite element model and the replacement layer finite element model; the second contact pair is the contact pair between the foundation soil layer finite element model and the replacement layer finite element model.

[0163] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: force parameters are input into a three-dimensional finite element model, and pressure analysis is performed on the first contact pair and the second contact pair respectively through the three-dimensional finite element model to obtain a first contact pressure of the first contact pair and a second contact pressure of the second contact pair; based on the first contact pressure and the second contact pressure, a bearing capacity analysis is performed on the target foundation to obtain a bearing capacity analysis result of the target foundation.

[0164] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining a standard pressure value of the replacement layer, performing a bearing capacity analysis on the replacement layer of the target foundation based on the comparison results between the first contact pressure and the second contact pressure and the standard pressure value, and obtaining a first bearing capacity analysis result of the replacement layer; determining a second bearing capacity analysis result of the foundation soil layer based on the second contact pressure; and using the first bearing capacity analysis result and the second bearing capacity analysis result together as the bearing capacity analysis result of the target foundation.

[0165] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the bottom area of ​​the raft structure; performing a ground contact rate analysis on the target foundation based on the bottom area and each target contact pressure to obtain the ground contact rate of the target foundation.

[0166] In one embodiment, a computer program product is provided, including a computer program, which implements the following steps when executed by a processor: in response to a foundation analysis instruction for a target foundation, obtaining foundation parameters of the target foundation; based on the foundation parameters, performing three-dimensional finite element modeling on the target foundation to obtain a three-dimensional finite element model of the target foundation; determining force parameters of the target foundation; inputting the force parameters into the three-dimensional finite element model, performing a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtaining a bearing capacity analysis result of the target foundation.

[0167] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: performing three-dimensional finite element modeling on the upper building of the target foundation to obtain a finite element model of the upper structure of the target foundation; performing three-dimensional finite element modeling on the raft structure of the target foundation to obtain a raft finite element model of the target foundation; performing three-dimensional finite element modeling on the replacement layer of the target foundation to obtain a replacement layer finite element model of the target foundation; performing three-dimensional finite element modeling on the foundation soil layer of the target foundation to obtain a foundation soil layer finite element model of the target foundation; combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a three-dimensional finite element model of the target foundation.

[0168] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model are combined to obtain a combined finite element model; in the combined finite element model, a first contact pair and a second contact pair are established to obtain a three-dimensional finite element model of the target foundation; the first contact pair is the contact pair between the raft finite element model and the replacement layer finite element model; the second contact pair is the contact pair between the foundation soil layer finite element model and the replacement layer finite element model.

[0169] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: force parameters are input into a three-dimensional finite element model, and pressure analysis is performed on the first contact pair and the second contact pair respectively through the three-dimensional finite element model to obtain a first contact pressure of the first contact pair and a second contact pressure of the second contact pair; based on the first contact pressure and the second contact pressure, a bearing capacity analysis is performed on the target foundation to obtain a bearing capacity analysis result of the target foundation.

[0170] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining a standard pressure value of the replacement layer, performing a bearing capacity analysis on the replacement layer of the target foundation based on the comparison results between the first contact pressure and the second contact pressure and the standard pressure value, and obtaining a first bearing capacity analysis result of the replacement layer; determining a second bearing capacity analysis result of the foundation soil layer based on the second contact pressure; and using the first bearing capacity analysis result and the second bearing capacity analysis result together as the bearing capacity analysis result of the target foundation.

[0171] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the bottom area of ​​the raft structure; performing a ground contact rate analysis on the target foundation based on the bottom area and each target contact pressure to obtain the ground contact rate of the target foundation.

[0172] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0173] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0174] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0175] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A foundation analysis method, characterized in that: The method comprises: In response to a foundation analysis instruction for a target foundation, acquiring foundation parameters of the target foundation; Based on the foundation parameters, three-dimensional finite element modeling is performed on the target foundation to obtain a three-dimensional finite element model of the target foundation; Determining the stress parameters of the target foundation; The force parameters are input into the three-dimensional finite element model, and a bearing capacity analysis is performed on the target foundation through the three-dimensional finite element model to obtain a bearing capacity analysis result of the target foundation.

2. The method according to claim 1, characterized in that The performing three-dimensional finite element modeling on the target foundation to obtain the three-dimensional finite element model of the target foundation includes: Performing three-dimensional finite element modeling on the building above the target foundation to obtain a finite element model of the structure above the target foundation; Performing three-dimensional finite element modeling on the raft structure of the target foundation to obtain a finite element model of the raft of the target foundation; Performing three-dimensional finite element modeling on the replacement layer of the target foundation to obtain a finite element model of the replacement layer of the target foundation; Performing three-dimensional finite element modeling on the foundation soil layer of the target foundation to obtain a finite element model of the foundation soil layer of the target foundation; The upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model are combined to obtain a three-dimensional finite element model of the target foundation.

3. The method according to claim 2, characterized in that The above structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model are combined to obtain a three-dimensional finite element model of the target foundation, including: Combining the upper structure finite element model, the raft finite element model, the replacement layer finite element model, and the foundation soil layer finite element model to obtain a combined finite element model; In the combined finite element model, a first contact pair and a second contact pair are established to obtain a three-dimensional finite element model of the target foundation; the first contact pair is the contact pair between the raft finite element model and the replacement layer finite element model; the second contact pair is the contact pair between the foundation soil layer finite element model and the replacement layer finite element model.

4. The method according to claim 3, characterized in that The step of inputting the stress parameters into the three-dimensional finite element model, performing a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtaining a bearing capacity analysis result of the target foundation includes: Inputting the force parameters into the three-dimensional finite element model, and performing pressure analysis on the first contact pair and the second contact pair through the three-dimensional finite element model to obtain a first contact pressure of the first contact pair and a second contact pressure of the second contact pair; Based on the first contact pressure and the second contact pressure, a bearing capacity analysis is performed on the target foundation to obtain a bearing capacity analysis result of the target foundation.

5. The method according to claim 4, characterized in that The performing a bearing capacity analysis on the target foundation based on the first contact pressure and the second contact pressure to obtain a bearing capacity analysis result of the target foundation includes: Acquire a standard pressure value of the replacement layer, and perform a bearing capacity analysis on the replacement layer of the target foundation based on comparison results between the first contact pressure and the second contact pressure and the standard pressure value, to obtain a first bearing capacity analysis result of the replacement layer; Determining a second bearing capacity analysis result of the foundation soil layer based on the second contact pressure; The first bearing capacity analysis result and the second bearing capacity analysis result are used together as the bearing capacity analysis result of the target foundation.

6. The method according to claim 4, characterized in that The first contact pair includes a plurality of contact points, the first contact pressure includes a target contact pressure of each of the contact points; the method further includes: Obtaining the bottom area of ​​the raft structure; Based on the bottom area and each of the target contact pressures, a ground contact rate analysis is performed on the target foundation to obtain a ground contact rate of the target foundation.

7. A ground analysis device, characterized in that: The device comprises: A foundation parameter acquisition module, configured to acquire foundation parameters of a target foundation in response to a foundation analysis instruction for the target foundation; A three-dimensional finite element modeling module, used to perform three-dimensional finite element modeling on the target foundation based on the foundation parameters to obtain a three-dimensional finite element model of the target foundation; A stress parameter acquisition module, used to determine the stress parameters of the target foundation; The foundation analysis module is used to input the force parameters into the three-dimensional finite element model, perform a bearing capacity analysis on the target foundation through the three-dimensional finite element model, and obtain a bearing capacity analysis result of the target foundation.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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