Self-adaptive model selection and design method for house foundation

Abstract

The invention discloses a house foundation self-adaptive type selection and design method, and relates to the technical field of building design, and the method comprises the following steps: obtaining project geological data and an upper structure column bottom load; based on a preset discrimination rule, determining house foundation type selection according to the project geological data; and determining an optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation model selection and the specification requirements. According to the method, the design efficiency and the engineering economy of the building structure foundation design can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of architectural design, and in particular to a method for adaptively selecting and designing a building foundation. Background Art

[0002] With the rapid development of social economy, the increasing needs of people's livelihood, and the increasingly complex infrastructure construction, the structural foundation design has the characteristics of being large in number and can be standardized. At present, in the design of house structure foundation, designers need to judge the foundation type and foundation bearing layer one by one based on engineering experience, but this artificial house structure foundation design method has a very low design efficiency.

[0003] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of this application is to provide a method for adaptively selecting and designing a house foundation, aiming to solve the technical problem that the design efficiency of the artificial house structure foundation design method is very low.

[0005] To achieve the above objectives, the present application proposes a building foundation adaptive selection and design method, the building foundation adaptive selection and design method comprising:

[0006] Obtain project geological data and superstructure column base loads;

[0007] Based on the preset judgment rules, determine the building foundation selection according to the geological data of the project;

[0008] The optimal house foundation design scheme is determined based on the project geological data, the upper structure column base load, the house foundation selection and specification requirements.

[0009] In one embodiment, the step of determining the house foundation type based on the preset discrimination rules and the geological data of the project includes:

[0010] Determine the characteristic value of the bearing capacity of the foundation bearing layer based on the geological data of the project;

[0011] Determining whether the bearing capacity characteristic value of the foundation bearing layer is greater than a preset bearing pressure;

[0012] When the bearing capacity characteristic value of the foundation bearing layer is greater than the preset bearing pressure, determining that the house foundation is a shallow buried foundation;

[0013] When the bearing capacity characteristic value of the foundation bearing layer is not greater than the preset bearing pressure, determining whether the bearing capacity characteristic value of the soil layer foundation within a preset range below the positive and negative zero elevation of the building is greater than the preset bearing pressure;

[0014] When it is determined that the soil layer foundation bearing capacity characteristic value is greater than the preset bearing pressure, determining that the house foundation type is a shallow buried foundation;

[0015] When it is determined that the characteristic value of the bearing capacity of the soil layer foundation is not greater than the preset bearing pressure, the foundation type of the house is determined to be a pile foundation.

[0016] In one embodiment, the step of determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements includes:

[0017] When the house foundation is selected as a shallow buried foundation, the first bearing capacity verification, the second bearing capacity verification, the third bearing capacity verification and the foundation bearing capacity characteristic value correction are performed according to the upper structure column bottom load, the building foundation design specification and the seismic design specification to obtain the optimal house foundation design scheme, wherein the first bearing capacity verification is the bearing capacity verification under the action of axial load, the second bearing capacity verification is the bearing capacity verification under the action of eccentric load, and the third bearing capacity verification is the vertical bearing capacity verification under the action of earthquake.

[0018] In one embodiment, the step of determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements includes:

[0019] When the building foundation is a pile foundation, the minimum characteristic value of the vertical bearing capacity of a single pile and the minimum pile length are determined according to the specification requirements and the load at the bottom of the upper structure column;

[0020] Determine the absolute elevation of the bottom of each soil layer and the absolute elevation of the pile top based on the geological data of the project;

[0021] Determine the pile length of each soil layer according to the absolute elevation of the layer bottom and the absolute elevation of the pile top;

[0022] Determine the characteristic value of the vertical bearing capacity of a single pile under each soil layer;

[0023] Determine a target soil layer that satisfies both a first preset condition and a second preset condition, wherein the first preset condition is that the characteristic value of the vertical bearing capacity of the single pile is greater than or equal to the minimum characteristic value of the vertical bearing capacity of the single pile, and the second preset condition is that the pile length is greater than or equal to the minimum pile length;

[0024] The final pile length, the final depth into the bearing layer and the final characteristic value of the vertical bearing capacity of the single pile are determined according to the target soil layer.

[0025] In one embodiment, the step of determining the final pile length, the final depth into the bearing layer, and the final single pile vertical bearing capacity characteristic value according to the target soil layer includes:

[0026] Determine the target pile length corresponding to the target soil layer and the type of soil layer of the pile end bearing layer;

[0027] Determine the depth of the pile end full section entering the bearing layer according to the target pile length;

[0028] Determine the minimum bearing layer depth corresponding to the soil layer type of the pile end bearing layer according to the requirements of the specification;

[0029] If the depth into the bearing stratum is greater than the minimum bearing stratum depth, the target pile length is gradually reduced according to a preset step size to obtain a final pile length, and the depth into the bearing stratum corresponding to the final pile length is determined as the final depth into the bearing stratum, and the single pile vertical bearing capacity characteristic value corresponding to the final pile length is determined as the final single pile vertical bearing capacity characteristic value, wherein the final single pile vertical bearing capacity characteristic value is greater than or equal to the single pile vertical bearing capacity characteristic minimum value, and the final depth into the bearing stratum is greater than or equal to the minimum bearing stratum depth.

[0030] In one embodiment, after the step of determining the minimum bearing layer depth corresponding to the soil layer type of the pile end bearing layer according to the specification requirements, the step further includes:

[0031] If the depth of penetration into the bearing layer is not greater than the minimum bearing layer depth, then the pile length is increased based on the target pile length so that the new target pile length penetrates to the bottom of the next soil layer of the target soil layer;

[0032] After gradually reducing the new target pile length according to the preset step length, a final pile length is obtained, and a depth into the bearing layer corresponding to the final pile length is determined as a final depth into the bearing layer, and a single pile vertical bearing capacity characteristic value corresponding to the final pile length is determined as a final single pile vertical bearing capacity characteristic value, wherein the final single pile vertical bearing capacity characteristic value is greater than or equal to the minimum single pile vertical bearing capacity characteristic value, and the final depth into the bearing layer is greater than or equal to the minimum bearing layer depth.

[0033] In one embodiment, the step of determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements further includes:

[0034] Get the user's selected base type;

[0035] When the house foundation selection is inconsistent with the selected foundation type, determining a first concrete amount of the house foundation selection, and determining a second concrete amount of the selected foundation type;

[0036] The most preferred type is determined based on a comparison result between the first concrete amount and the second concrete amount.

[0037] In addition, to achieve the above-mentioned purpose, the present application also proposes a house foundation adaptive selection and design device, the house foundation adaptive selection and design device comprising:

[0038] Acquisition module, used to obtain project geological data and upper structure column bottom load;

[0039] A determination module, for determining the type of house foundation based on a preset discrimination rule and the geological data of the project;

[0040] The determination module is also used to determine the optimal house foundation design solution based on the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements.

[0041] In addition, to achieve the above-mentioned purpose, the present application also proposes a house foundation adaptive selection and design device, the device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the house foundation adaptive selection and design method as described above.

[0042] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the adaptive selection and design method of the house foundation as described above are implemented.

[0043] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the adaptive selection and design method of house foundation as described above.

[0044] One or more technical solutions proposed in this application have at least the following technical effects:

[0045] The adaptive selection and design method for house foundation proposed in the present application obtains the geological data of the project and the load at the bottom of the upper structure columns; based on the preset judgment rules, the house foundation selection is determined according to the project geological data; the optimal house foundation design scheme is determined according to the project geological data, the load at the bottom of the upper structure columns, the house foundation selection and the specification requirements, thereby solving the technical problem of very low design efficiency of the manual house structure foundation design method. Compared with the prior art, the present application can automatically match the appropriate house foundation type according to the project geological data, and can realize the automated batch design of house foundations without the engineering experience of the designers, thereby improving the design efficiency and engineering economy of the house structure foundation design method. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] Figure 1 A flow chart of the first embodiment of the method for adaptive selection and design of house foundations provided in this application;

[0049] Figure 2 An example diagram of the mdb data table provided for the first embodiment of the housing foundation adaptive selection and design method of the present application;

[0050] Figure 3 A flow chart of the second embodiment of the method for adaptive selection and design of house foundations provided in this application;

[0051] Figure 4 A schematic diagram of a flow chart of house foundation selection provided in Embodiment 2 of the house foundation adaptive selection and design method of the present application;

[0052] Figure 5 A flowchart of iterative calculation of pile foundation provided in Example 2 of the adaptive selection and design method for house foundation of this application;

[0053] Figure 6 This is a schematic diagram of the module structure of the house foundation adaptive selection and design device according to the embodiment of the present application;

[0054] Figure 7 It is a schematic diagram of the equipment structure of the hardware operating environment involved in the adaptive selection and design method of the house foundation in the embodiment of the present application.

[0055] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0057] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0058] The main solution of the embodiment of the present application is: to obtain the project geological data and the load at the bottom of the upper structure columns; based on the preset judgment rules, determine the selection of the house foundation according to the project geological data; determine the optimal house foundation design scheme according to the project geological data, the load at the bottom of the upper structure columns, the house foundation selection and the specification requirements.

[0059] In this embodiment, for ease of description, the following description is made by taking the identification of the building foundation adaptive selection and design equipment as the execution subject.

[0060] Because the design efficiency of the artificial house structure foundation design method is very low.

[0061] The adaptive selection and design method for house foundation proposed in the present application obtains the geological data of the project and the load at the bottom of the upper structure columns; based on the preset judgment rules, the house foundation selection is determined according to the project geological data; the optimal house foundation design scheme is determined according to the project geological data, the load at the bottom of the upper structure columns, the house foundation selection and the specification requirements, thereby solving the technical problem of very low design efficiency of the manual house structure foundation design method. Compared with the prior art, the present application can automatically match the appropriate house foundation type according to the project geological data, and can realize the automated batch design of house foundations without the engineering experience of the designers, thereby improving the design efficiency and engineering economy of the house structure foundation design method.

[0062] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a house foundation adaptive selection and design device, etc. The following takes the house foundation adaptive selection and design device as an example to illustrate this embodiment and the following embodiments.

[0063] Based on this, the embodiment of the present application provides a building foundation adaptive selection and design method, referring to Figure 1 , Figure 1This is a flow chart of the first embodiment of the adaptive selection and design method for house foundations of the present application.

[0064] In this embodiment, the building foundation adaptive selection and design method includes steps S10 to S40:

[0065] Step S10, obtaining the geological data of the project and the bottom load of the upper structure column;

[0066] It should be noted that if Figure 2 As shown, the project geological data can be obtained by reading the geological data .mdb file. The geological data .mdb file is the data source for geological professionals to draw geological profiles, bar charts and other drawings. Project geological data usually refers to a detailed introduction to the soil and rock characteristics related to a specific construction project, such as soil type, soil layer thickness, soil bearing capacity, groundwater level, soil type distribution, etc.

[0067] It should be noted that the load at the base of the superstructure column refers to the force transmitted from the building superstructure to the foundation components, and is one of the associated conditions for foundation design.

[0068] Step S20, based on preset discrimination rules, determine the house foundation type according to the geological data of the project;

[0069] It should be noted that the preset judgment rules are embedded rules of the program. The selection of house foundations includes shallow buried foundations and pile foundations. Shallow buried foundations are usually suitable for surface soils with higher bearing capacity and lower groundwater levels. Pile foundations are suitable for situations where the surface soil has low bearing capacity or needs to cross soft soil layers. Pile foundations transfer the load to deeper soil or rock layers with stronger bearing capacity.

[0070] Step S30, determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements.

[0071] It should be noted that when the house foundation is a shallow buried foundation, it is necessary to consider the characteristic value of the foundation bearing capacity to determine whether it meets the requirements of the specification and then determine the optimal house foundation design plan. When the house foundation is a pile foundation, it is necessary to consider the pile length, depth into the bearing layer and the characteristic value of the vertical bearing capacity of the single pile to determine whether it meets the requirements of the specification and then determine the optimal house foundation design plan.

[0072] In a feasible implementation manner, the step of determining the optimal house foundation design scheme based on the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements also includes: obtaining the user's selected foundation type; when the house foundation selection is inconsistent with the selected foundation type, determining the first concrete amount of the house foundation selection, and determining the second concrete amount of the selected foundation type; determining the optimal selected model based on the comparison result of the first concrete amount and the second concrete amount.

[0073] It should be noted that for some soil layers with flat distribution, either pile foundation or shallow buried foundation can be used, and the user can choose. When the type selected by the user is inconsistent with the automatically matched type, the most preferred type can be determined based on the concrete usage of these types.

[0074] It is understandable that since the project cost = quota * concrete usage, and since the quota for the same project is a constant, the concrete usage and the project cost are in a linear relationship. The less concrete is used, the lower the project cost. Therefore, we can recommend a model with a lower project cost to users.

[0075] In the specific implementation, in the process of optimizing the design of the house foundation, the preset rules are used, combined with the upper structure load information and the distribution of geological soil layers, to carry out adaptive selection of the house structure foundation (adaptive selection means that the program determines the type of foundation to be used based on the input conditions (upper structure load and geological data) and the embedded rules of the program). First, by analyzing the geological data, the program automatically determines the shallow foundation or deep foundation design scheme. According to the scheme confirmed by the user, the program performs automated batch design based on the geological data. During the design process, the soil layers are traversed layer by layer from top to bottom to find solutions to all constraints, and then the optimal solution is gradually found by increasing or decreasing the step size. At the same time, the system compares the engineering costs of multiple design schemes to determine the most economical foundation design scheme. By applying this method, not only the design efficiency is improved, but also the engineering economy is significantly improved. By accurately matching the foundation type and geological conditions, the optimization of the house structure design is achieved, and the design time and cost are reduced.

[0076] This embodiment obtains project geological data and upper structure column bottom load; determines the house foundation type according to the project geological data based on preset judgment rules; determines the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation type and specification requirements, thereby solving the technical problem of very low design efficiency of manual house structure foundation design methods. Compared with the prior art, this application can automatically match the appropriate house foundation type according to the project geological data, and can realize automated batch design of house foundations without the engineering experience of designers, thereby improving the design efficiency and engineering economy of the house structure foundation design method.

[0077] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 , step S20 also includes steps S201 to S206:

[0078] Step S201, determining the bearing capacity characteristic value of the foundation bearing layer according to the geological data of the project;

[0079] It should be noted that the characteristic value of the bearing capacity of the foundation bearing layer refers to the characteristic value of the bearing capacity of the soil layer at the bottom of the foundation, that is, the bearing layer. The soil layer at the bottom of the foundation, that is, the bearing layer, is the soil layer that directly bears the load transmitted from the foundation. The characteristic value of the foundation bearing capacity refers to the maximum load that the soil layer can safely withstand per unit area under the premise of ensuring the stability and safety of the soil layer.

[0080] Step S202, determining whether the bearing capacity characteristic value of the foundation bearing layer is greater than a preset bearing pressure;

[0081] It should be noted that the preset bearing pressure can be set to 100 kPa.

[0082] Step S203, when the bearing capacity characteristic value of the foundation bearing layer is greater than the preset bearing pressure, determining that the house foundation is a shallow buried foundation;

[0083] Step S204, when the bearing capacity characteristic value of the foundation bearing layer is not greater than the preset bearing pressure, it is determined whether the bearing capacity characteristic value of the soil layer foundation within a preset range below the positive and negative zero elevation of the building is greater than the preset bearing pressure;

[0084] It should be noted that the characteristic value of the bearing capacity of the soil foundation within a preset range below the building's zero elevation refers to the unit area load that the soil layer can safely withstand within a specific depth range (for example, the soil layer within 3 meters below the building's zero elevation).

[0085] Step S205, when it is determined that the soil layer foundation bearing capacity characteristic value is greater than the preset bearing pressure, determining that the house foundation is a shallow buried foundation;

[0086] Step S206, when it is determined that the characteristic value of the soil layer foundation bearing capacity is not greater than the preset bearing pressure, determining that the house foundation is selected as a pile foundation.

[0087] In the specific implementation, Figure 4 As shown, the preset discrimination rules are as follows:

[0088] (1) Is the bearing capacity characteristic value fak of the soil layer at the bottom of the foundation greater than 100 kPa? If so, a shallow foundation can be used; otherwise, proceed to the next step;

[0089] (2) Traverse the soil layer within 3m below the zero elevation of the building from top to bottom to determine whether the characteristic value fak of the soil foundation bearing capacity is greater than 100kPa. If it is satisfied, it can be used as a shallow foundation, otherwise proceed to the third step;

[0090] (3) Through the previous judgment, if all soil layers do not meet the requirements, the foundation is judged to be a pile foundation.

[0091] It should be noted that, unless the geological conditions fluctuate greatly, usually one type of foundation is uniformly selected in a project, that is, shallow buried foundation or pile foundation. Depending on the geological conditions, it is also possible to meet the conditions for setting up shallow buried foundation and pile foundation at the same time. Therefore, the comprehensive comparison of the schemes is of great significance to ensure the economic efficiency of the project.

[0092] In a specific implementation, the user may further determine the type of pile foundation (bored cast-in-place pile or pipe pile) according to actual engineering conditions, and then continue the calculation according to the type of pile foundation selected by the user.

[0093] In a feasible implementation manner, the step of determining the optimal house foundation design scheme based on the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements includes: when the house foundation selection is a shallow buried foundation, performing a first bearing capacity verification, a second bearing capacity verification, a third bearing capacity verification and a foundation bearing capacity characteristic value correction according to the upper structure column bottom load, building foundation design specifications and seismic design specifications to obtain the optimal house foundation design scheme, wherein the first bearing capacity verification is the bearing capacity verification under axial load, the second bearing capacity verification is the bearing capacity verification under eccentric load, and the third bearing capacity verification is the vertical bearing capacity verification under earthquake action.

[0094] It should be noted that the bearing capacity verification under axial load is based on Article 5.2.1 of the "Code for Design of Building Foundations", the bearing capacity verification under eccentric load is based on Article 5.2.2 of the "Code for Design of Building Foundations", the vertical bearing capacity verification under seismic action is based on Article 4.2.4 of the "Code for Seismic Design of Buildings", and the characteristic value of foundation bearing capacity is revised based on Article 5.2.4 of the "Code for Design of Building Foundations".

[0095] In specific implementation, according to the requirements of Article 5.2.1 of the Code for Design of Building Foundations (GB50007-2011), the foundation bottom pressure should meet the following requirements:

[0096] When the axial load acts (the upper load point is the same as the foundation center point):

[0097] p k ≤f a

[0098] Where: p k ——The average pressure value at the bottom of the foundation corresponding to the standard combination of actions (kPa);

[0099] f a ——Corrected characteristic value of foundation bearing capacity (kPa).

[0100] When eccentric load acts (the upper load point is different from the foundation center point):

[0101] p kmax ≤1.2f a

[0102] Where: p kmax ——The maximum pressure value at the edge of the foundation bottom surface corresponding to the standard combination of actions (kPa)

[0103] In specific implementation, according to the requirements of Article 5.2.2 of the Code for Design of Building Foundations (GB50007-2011), the pressure on the bottom surface of the foundation can be determined by the following formula:

[0104] When axial load acts:

[0105]

[0106] Where: F k ——Vertical force value transmitted from the superstructure to the top surface of the foundation corresponding to the standard combination of actions (kN)

[0107] G k ——Self-weight of foundation and weight of soil on foundation (kN)

[0108] A——foundation bottom area (m2)

[0109] When eccentric load acts:

[0110]

[0111] Where: M k ——Moment value acting on the bottom surface of the foundation corresponding to the standard combination of actions (kN m);

[0112] W——resistance moment of foundation bottom (m3);

[0113] p k min ——The minimum pressure value (kPa) at the edge of the bottom surface of the foundation corresponding to the standard combination of actions.

[0114] In specific implementation, according to the requirements of Article 5.2.4 of the Code for Design of Building Foundations (GB50007-2011), when the foundation width is greater than 3m or the buried depth is greater than 0.5m, the foundation bearing capacity characteristic value determined by load test or other in-situ test, empirical value and other methods should be corrected as follows:

[0115] f a =f ak +η b γ(b-3)+η d γ m (d-0.5)

[0116] Where: f a ——corrected characteristic value of foundation bearing capacity (kPa);

[0117] f ak ——The characteristic value of foundation bearing capacity (kPa) is usually provided by geological professionals;

[0118] η b , η d ——Correction coefficient of foundation bearing capacity for foundation width and embedment depth, according to the type of soil under the base, refer to Table 5.2.4 of Code for Design of Building Foundations (GB50007-2011);

[0119] γ——the density of soil below the foundation ground (kN / m3), the floating density is taken below the groundwater level;

[0120] b——foundation bottom width (m). When the foundation bottom width is less than 3m, it is taken as 3m; when it is greater than 6m, it is taken as 6m;

[0121] γ m ——The weighted average density of the soil above the bottom of the foundation (kN / m3). The soil layer below the groundwater level takes the effective density;

[0122] d——foundation burial depth (m), should be measured from the outdoor ground elevation.

[0123] In specific implementation, according to the requirements of Article 4.2.4 of the Code for Seismic Design of Buildings (GB50011-2010), when verifying the vertical bearing capacity of natural foundations under earthquake action, the average pressure at the bottom of the foundation and the maximum pressure at the edge according to the standard combination of earthquake action effects should meet the following requirements:

[0124] p≤f aE

[0125] p max ≤1.2f aE

[0126] Where: p is the average pressure on the bottom surface of the foundation of the standard combination of earthquake action effects;

[0127] p max ——The maximum pressure at the foundation edge of the standard combination of earthquake action effects.

[0128] In a feasible implementation manner, the step of determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements includes: when the house foundation is selected as a pile foundation, determining the minimum characteristic value of the vertical bearing capacity of a single pile and the minimum pile length according to the specification requirements and the upper structure column bottom load; determining the absolute elevation of the bottom of each soil layer and the absolute elevation of the pile top according to the project geological data; determining the pile length of each soil layer according to the absolute elevation of the bottom of the layer and the absolute elevation of the pile top; determining the characteristic value of the vertical bearing capacity of a single pile under each soil layer; determining a target soil layer that satisfies both a first preset condition and a second preset condition, wherein the first preset condition is that the characteristic value of the vertical bearing capacity of a single pile is greater than or equal to the minimum characteristic value of the vertical bearing capacity of a single pile, and the second preset condition is that the pile length is greater than or equal to the minimum pile length; determining the final pile length, the final depth into the bearing layer and the final characteristic value of the vertical bearing capacity of a single pile according to the target soil layer.

[0129] It should be noted that the user can specify the minimum characteristic value of the vertical bearing capacity of a single pile required for the pile foundation based on the load at the bottom of the superstructure column, and can also obtain the absolute elevation Hsi of the bottom of each soil layer and the mechanical parameters of each soil layer through the project geological data. The depth into the bearing layer refers to the depth of the pile entering the soil layer.

[0130] In the specific implementation, the characteristic value of the vertical bearing capacity of a single pile can be calculated according to the requirements of Articles 5.2.1 and 5.2.2 of the Technical Specifications for Building Pile Foundations (JGJ94-2008):

[0131] The calculation of the vertical bearing capacity of foundation piles shall meet the following requirements:

[0132] Standard combinations of load effects

[0133] Under the action of axial vertical force:

[0134] N k ≤R

[0135] Under the action of eccentric vertical force, in addition to satisfying the above formula, the following requirements should also be met:

[0136] N kmax ≤1.2R

[0137] Standard combination of earthquake action effects and load effects:

[0138] Under the action of axial vertical force:

[0139] N Ek ≤1.25R

[0140] Under the action of eccentric vertical force, in addition to satisfying the above formula, the following requirements should also be met:

[0141] N Ekmax ≤1.5R

[0142] Where N k ——The average vertical force of the pile or composite pile under the action of the standard combined axial vertical force of the load effect

[0143] N kmax ——The maximum vertical force at the top of the pile under the action of the axial vertical force of the standard combination of load effects

[0144] N Ek ——Average vertical force on piles or composite piles under standard combination of earthquake action and load effect

[0145] N Ekmax ——The maximum vertical force of the pile or composite pile under the standard combination of earthquake effect and load effect

[0146] R——characteristic value of vertical bearing capacity of pile or composite pile

[0147] The characteristic value R of the vertical bearing capacity of a single pile should be determined according to the following formula:

[0148]

[0149] Where: Q uk ——Eigenvalue of vertical bearing capacity of single pile

[0150] K——Safety factor, take K=2

[0151] It should be noted that when determining the target soil layer, it is necessary to add a corresponding length to the bottom of the next soil layer based on the current pile length corresponding to the current soil layer. After each increase in the corresponding pile length, it is necessary to determine whether the first preset condition and the second preset condition are simultaneously met under the current circumstances. If both are met, the current soil layer can be determined as the target soil layer. The target soil layer can be understood as the target soil layer corresponding to the first time the first preset condition and the second preset condition are simultaneously met when the corresponding length is gradually increased based on the current pile length.

[0152] In the specific implementation, the pile length L = the absolute elevation of the pile top Htop - the absolute elevation of the bottom of the soil layer i Hsbtmi, and the relationship between the characteristic value Ra of the vertical bearing capacity of the single pile and the characteristic minimum value Ramin of the vertical bearing capacity of the single pile is determined as follows:

[0153] If Ra≤Ramin, increase the pile length to the bottom of the next soil layer (i=i+1);

[0154] If Ra>Ramin, continue to determine whether the pile length L meets the minimum length requirement.

[0155] Finally, according to the requirements of the specifications, that is, under the current soil layer, it is necessary to simultaneously meet the requirements that the characteristic value of the vertical bearing capacity of a single pile is greater than the minimum value of the vertical bearing capacity of a single pile and the pile length is greater than or equal to the minimum pile length.

[0156] In the specific implementation, the minimum pile length is 6m. If the current pile length L<6m, the pile length is increased to the bottom of the next soil layer (i=i+1), and then the relationship between the single pile vertical bearing capacity characteristic value Ra and Ramin is continued to be judged; until the current pile length L≥6m.

[0157] In a feasible implementation manner, the step of determining the final pile length, the final bearing layer depth and the final single pile vertical bearing capacity characteristic value according to the target soil layer includes: determining the target pile length and the bearing layer soil type of the pile end corresponding to the target soil layer; determining the bearing layer depth of the pile end full section entering the bearing layer according to the target pile length; determining the minimum bearing layer depth corresponding to the bearing layer soil type of the pile end according to the specification requirements; if the bearing layer depth is greater than the minimum bearing layer depth, then gradually reducing the target pile length according to a preset step size to obtain the final pile length, and determining the bearing layer depth corresponding to the final pile length as the final bearing layer depth, and determining the single pile vertical bearing capacity characteristic value corresponding to the final pile length as the final single pile vertical bearing capacity characteristic value, wherein the final single pile vertical bearing capacity characteristic value is greater than or equal to the single pile vertical bearing capacity characteristic minimum value, and the final bearing layer depth is greater than or equal to the minimum bearing layer depth.

[0158] It should be noted that the minimum bearing layer depth corresponding to the bearing layer soil type at the pile end is: for clay and silt, the bearing layer depth should not be less than 2d (d is the pile diameter), that is, the minimum bearing layer depth is 2d at this time; the bearing layer depth of sand should not be less than 1.5d, that is, the minimum bearing layer depth is 1.5d at this time; the bearing layer depth of gravel soil should not be less than 1d, that is, the minimum bearing layer depth is 1d at this time.

[0159] It should be noted that when the depth into the bearing layer is greater than the minimum bearing layer depth, the pile length can be gradually reduced according to the preset step size until the single pile vertical bearing capacity characteristic value, the depth into the bearing layer and the pile length under the current situation do not meet the requirements, and then the single pile vertical bearing capacity characteristic value, the depth into the bearing layer and the pile length of the previous cycle are output. Each time the pile length is reduced, it is necessary to judge that the single pile vertical bearing capacity characteristic value under the current situation is greater than or equal to the single pile vertical bearing capacity characteristic minimum value, the depth into the bearing layer is greater than or equal to the minimum bearing layer depth, and the pile length is greater than or equal to the minimum pile length, that is, the pile length is reduced according to a step size of 0.1m, and each time the pile length is changed, the single pile vertical bearing capacity characteristic value, the depth into the bearing layer and the minimum pile length are repeatedly verified. When the critical value is reached, the final pile length, the depth into the bearing layer and the single pile vertical bearing capacity characteristic value are output.

[0160] In a feasible implementation manner, after the step of determining the minimum bearing layer depth corresponding to the type of soil layer at the pile end bearing layer according to the specification requirements, the step also includes: if the depth into the bearing layer is not greater than the minimum bearing layer depth, then increasing the pile length on the basis of the target pile length so that the new target pile length penetrates into the bottom of the next soil layer of the target soil layer; gradually reducing the new target pile length according to the preset step length to obtain the final pile length, and determining the depth into the bearing layer corresponding to the final pile length as the final depth into the bearing layer, and determining the single pile vertical bearing capacity characteristic value corresponding to the final pile length as the final single pile vertical bearing capacity characteristic value, wherein the final single pile vertical bearing capacity characteristic value is greater than or equal to the single pile vertical bearing capacity characteristic minimum value, and the final depth into the bearing layer is greater than or equal to the minimum bearing layer depth.

[0161] It should be noted that if Figure 5As shown in the figure, if the depth into the bearing layer is not greater than the minimum bearing layer depth, it is necessary to increase the pile length on the basis of the target pile length to go deep into the bottom of the next soil layer of the target soil layer to search for the soil layer downward until the current soil layer type meets the corresponding requirements (that is, the depth into the bearing layer must be greater than the minimum bearing layer depth). At this time, the pile length can be gradually reduced according to the preset step size until the single pile vertical bearing capacity characteristic value, the depth into the bearing layer and the pile length under the current situation do not meet the requirements. The single pile vertical bearing capacity characteristic value, the depth into the bearing layer and the pile length of the previous cycle are output. Each time the pile length is reduced, it is necessary to judge that the single pile vertical bearing capacity characteristic value under the current situation is greater than or equal to the single pile vertical bearing capacity characteristic minimum value, the depth into the bearing layer is greater than or equal to the minimum bearing layer depth, and the pile length is greater than or equal to the minimum pile length, that is, the pile length is reduced according to the step size of 0.1m. Each time the pile length is changed, the single pile vertical bearing capacity characteristic value, the depth into the bearing layer and the minimum pile length are repeatedly verified. When the critical value is reached, the final pile length, the depth into the bearing layer and the single pile vertical bearing capacity characteristic value are output.

[0162] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the adaptive selection and design method of the house foundation of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0163] This application also provides a house foundation adaptive selection and design device, please refer to Figure 6 , the house foundation adaptive selection and design device comprises:

[0164] The acquisition module 10 is used to obtain the geological data of the project and the load at the bottom of the upper structure column;

[0165] A determination module 20, for determining the type of house foundation based on a preset discrimination rule and the geological data of the project;

[0166] The determination module 20 is also used to determine the optimal house foundation design solution based on the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements.

[0167] The house foundation adaptive selection and design device provided by the present application adopts the house foundation adaptive selection and design method in the above-mentioned embodiment, which can solve the technical problem that the design efficiency of the house structure foundation design method based on artificial methods is very low. Compared with the prior art, the beneficial effects of the house foundation adaptive selection and design device provided by the present application are the same as the beneficial effects of the house foundation adaptive selection and design method provided by the above-mentioned embodiment, and the other technical features in the house foundation adaptive selection and design device are the same as the features disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0168] The present application provides a house foundation adaptive selection and design device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the house foundation adaptive selection and design method in the above-mentioned embodiment one.

[0169] Reference below Figure 7 , which shows a schematic diagram of the structure of a house foundation adaptive selection and design device suitable for implementing the embodiment of the present application. The house foundation adaptive selection and design device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 7 The house foundation adaptive selection and design device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0170] like Figure 7As shown, the house foundation adaptive selection and design device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the house foundation adaptive selection and design device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the house foundation adaptive selection and design device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows a house foundation adaptive selection and design device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have instead.

[0171] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0172] The house foundation adaptive selection and design device provided by the present application adopts the house foundation adaptive selection and design method in the above embodiment, which can solve the technical problem that the design efficiency of the house structure foundation design method based on artificial methods is very low. Compared with the prior art, the beneficial effects of the house foundation adaptive selection and design device provided by the present application are the same as the beneficial effects of the house foundation adaptive selection and design method provided by the above embodiment, and other technical features in the house foundation adaptive selection and design device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0173] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0174] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0175] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the adaptive selection and design method for building foundations in the above-mentioned embodiment.

[0176] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0177] The computer-readable storage medium may be included in the house foundation adaptive selection and design device; or may exist independently without being assembled into the house foundation adaptive selection and design device.

[0178] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the house foundation adaptive selection and design device, the house foundation adaptive selection and design device: obtains project geological data and upper structure column bottom load; determines the house foundation selection according to the project geological data based on preset judgment rules; determines the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements.

[0179] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0180] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0181] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0182] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned house foundation adaptive selection and design method, and can solve the technical problem that the design efficiency of the artificial house structure foundation design method is very low. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the house foundation adaptive selection and design method provided by the above-mentioned embodiment, and will not be repeated here.

[0183] The present application also provides a computer program product, including a computer program, which implements the steps of the above-mentioned building foundation adaptive selection and design method when executed by a processor.

[0184] The computer program product provided by the present application can solve the technical problem that the design efficiency of the artificial house structure foundation design method is very low. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the house foundation adaptive selection and design method provided by the above embodiment, which will not be repeated here.

[0185] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A building foundation adaptive selection and design method, characterized in that: The method comprises: Obtain project geological data and superstructure column base loads; Based on the preset judgment rules, determine the building foundation selection according to the geological data of the project; The optimal house foundation design scheme is determined based on the project geological data, the upper structure column base load, the house foundation selection and specification requirements.

2. The method according to claim 1, characterized in that The step of determining the house foundation type based on the preset discrimination rules and the geological data of the project comprises: Determine the characteristic value of the bearing capacity of the foundation bearing layer based on the geological data of the project; Determining whether the bearing capacity characteristic value of the foundation bearing layer is greater than a preset bearing pressure; When the bearing capacity characteristic value of the foundation bearing layer is greater than the preset bearing pressure, determining that the house foundation is a shallow buried foundation; When the bearing capacity characteristic value of the foundation bearing layer is not greater than the preset bearing pressure, determining whether the bearing capacity characteristic value of the soil layer foundation within a preset range below the positive and negative zero elevation of the building is greater than the preset bearing pressure; When it is determined that the soil layer foundation bearing capacity characteristic value is greater than the preset bearing pressure, determining that the house foundation type is a shallow buried foundation; When it is determined that the characteristic value of the bearing capacity of the soil layer foundation is not greater than the preset bearing pressure, the foundation type of the house is determined to be a pile foundation.

3. The method according to claim 2, characterized in that The step of determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements includes: When the house foundation is selected as a shallow buried foundation, the first bearing capacity verification, the second bearing capacity verification, the third bearing capacity verification and the foundation bearing capacity characteristic value correction are performed according to the upper structure column bottom load, the building foundation design specification and the seismic design specification to obtain the optimal house foundation design scheme, wherein the first bearing capacity verification is the bearing capacity verification under the action of axial load, the second bearing capacity verification is the bearing capacity verification under the action of eccentric load, and the third bearing capacity verification is the vertical bearing capacity verification under the action of earthquake.

4. The method according to claim 2, characterized in that The step of determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements includes: When the building foundation is a pile foundation, the minimum characteristic value of the vertical bearing capacity of a single pile and the minimum pile length are determined according to the specification requirements and the load at the bottom of the upper structure column; Determine the absolute elevation of the bottom of each soil layer and the absolute elevation of the pile top based on the geological data of the project; Determine the pile length of each soil layer according to the absolute elevation of the layer bottom and the absolute elevation of the pile top; Determine the characteristic value of the vertical bearing capacity of a single pile under each soil layer; Determine a target soil layer that satisfies both a first preset condition and a second preset condition, wherein the first preset condition is that the characteristic value of the vertical bearing capacity of the single pile is greater than or equal to the minimum characteristic value of the vertical bearing capacity of the single pile, and the second preset condition is that the pile length is greater than or equal to the minimum pile length; The final pile length, the final depth into the bearing layer and the final characteristic value of the vertical bearing capacity of the single pile are determined according to the target soil layer.

5. The method according to claim 4, characterized in that The step of determining the final pile length, the final depth into the bearing layer and the final characteristic value of the vertical bearing capacity of the single pile according to the target soil layer comprises: Determine the target pile length corresponding to the target soil layer and the type of soil layer of the pile end bearing layer; Determine the depth of the pile end full section entering the bearing layer according to the target pile length; Determine the minimum depth of the bearing layer corresponding to the soil layer type of the pile end bearing layer according to the requirements of the specification; If the depth into the bearing stratum is greater than the minimum bearing stratum depth, the target pile length is gradually reduced according to a preset step size to obtain a final pile length, and the depth into the bearing stratum corresponding to the final pile length is determined as the final depth into the bearing stratum, and the single pile vertical bearing capacity characteristic value corresponding to the final pile length is determined as the final single pile vertical bearing capacity characteristic value, wherein the final single pile vertical bearing capacity characteristic value is greater than or equal to the single pile vertical bearing capacity characteristic minimum value, and the final depth into the bearing stratum is greater than or equal to the minimum bearing stratum depth.

6. The method according to claim 5, characterized in that After the step of determining the minimum bearing layer depth corresponding to the soil layer type of the pile end bearing layer according to the specification requirements, the step further includes: If the depth of penetration into the bearing layer is not greater than the minimum bearing layer depth, then the pile length is increased based on the target pile length so that the new target pile length penetrates to the bottom of the next soil layer of the target soil layer; After gradually reducing the new target pile length according to the preset step length, a final pile length is obtained, and a depth into the bearing layer corresponding to the final pile length is determined as a final depth into the bearing layer, and a single pile vertical bearing capacity characteristic value corresponding to the final pile length is determined as a final single pile vertical bearing capacity characteristic value, wherein the final single pile vertical bearing capacity characteristic value is greater than or equal to the minimum single pile vertical bearing capacity characteristic value, and the final depth into the bearing layer is greater than or equal to the minimum bearing layer depth.

7. The method according to claim 1, characterized in that After the step of determining the optimal house foundation design scheme according to the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements, the step also includes: Get the user's selected base type; When the house foundation selection is inconsistent with the selected foundation type, determining a first concrete amount of the house foundation selection, and determining a second concrete amount of the selected foundation type; The most preferred type is determined based on a comparison result between the first concrete amount and the second concrete amount.

8. A house foundation adaptive selection and design device, characterized in that: The device comprises: Acquisition module, used to obtain project geological data and upper structure column bottom load; A determination module, for determining the type of house foundation based on preset discrimination rules and the geological data of the project; The determination module is also used to determine the optimal house foundation design solution based on the project geological data, the upper structure column bottom load, the house foundation selection and specification requirements.

9. A house foundation adaptive selection and design device, characterized in that: The device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the adaptive selection and design method for building foundations as described in any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the building foundation adaptive selection and design method according to any one of claims 1 to 7 are implemented.

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