Variable-section composite pile deployment method and system

Abstract

The present invention discloses a variable-section composite pile deployment method and system. The method comprises the following steps: firstly collecting environmental information of the variable-section composite pile deployment area, and calculating the actual value of the influencing parameter in combination with the composite pile parameter; then obtaining the standard value of the influencing parameter of the reference deployment strategy, and comparing the standard value of the influencing parameter with the actual value to obtain the difference evaluation value of each reference deployment strategy. By comparing the standard value of the influencing parameter with the actual value, the adaptability of different composite pile combinations is provided with a unified measurement standard; when at least two difference evaluation values ​​are less than a threshold value, it indicates that a relatively ideal reference deployment strategy exists at this time, and then the best-fitting target deployment strategy is selected from the reference deployment strategy. Finally, the variable-section composite piles are deployed in the deployment area according to the target deployment strategy, thereby achieving scientific and efficient deployment. In addition, no human judgment is required when deploying the variable-section composite piles, so that the deployed variable-section composite piles can obtain dual guarantees of quality and deployment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of power grids, and in particular to a method and system for deploying variable-section composite piles. Background Art

[0002] Power transmission and transformation, a general term for both "power transmission" and "power transformation," is a critical link in the transmission and distribution of electrical energy within power systems. This process requires the installation of variable-section composite piles to ensure stable power transmission. These piles combine different materials (such as concrete, steel, and fiber-reinforced composite materials) with varying cross-sections to enhance bearing capacity and seismic resistance. Different installation environments require different combinations of variable-section composite pile technologies to ensure the highest quality and efficiency. Existing technologies for deploying variable-section composite piles primarily rely on on-site expert evaluations. This expert evaluation, influenced by subjective experience, can lead to inaccurate results, and manual evaluations are inefficient, resulting in wasted manpower and resources. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a variable-section composite pile deployment method and system, which does not require human judgment when deploying the variable-section composite piles, so that the deployed variable-section composite piles can be dually guaranteed in terms of quality and deployment efficiency.

[0004] To achieve the above objectives, an embodiment of the present invention provides a method for deploying variable-section composite piles, comprising:

[0005] Obtaining environmental information of the deployment area where the variable-section composite piles are to be erected;

[0006] Calculating actual values ​​of influencing parameters based on the environmental information and the composite pile parameters of the variable-section composite pile;

[0007] Obtaining standard values ​​of influencing parameters corresponding to at least two reference deployment strategies, and calculating a difference evaluation value for each reference deployment strategy based on the actual value of the influencing parameter and the standard value of the influencing parameter; wherein each reference deployment strategy corresponds to a deployment mode of a variable-section composite pile combination;

[0008] When there are at least two difference evaluation values ​​smaller than a preset difference evaluation threshold, obtaining candidate deployment strategies corresponding to the difference evaluation values ​​smaller than the difference evaluation threshold, and selecting a target deployment strategy from the candidate deployment strategies;

[0009] Variable-section composite piles are deployed in the deployment area according to the deployment method of the variable-section composite piles in the target deployment strategy.

[0010] As an improvement to the above solution, after calculating the difference evaluation value of each reference deployment strategy based on the actual value of the influencing parameter and the standard value of the influencing parameter, the method further includes:

[0011] When all difference evaluation values ​​are greater than or equal to the difference evaluation threshold, compare the actual value of each influencing parameter with the standard value of the influencing parameter in the reference deployment strategy, and find the standard value of the influencing parameter with the minimum difference;

[0012] Obtain the standard deployment strategy corresponding to the standard value of the influencing parameter with the smallest difference;

[0013] Constructing a strategy optimization model using the standard values ​​of the influencing parameters and the deployment method of the standard deployment strategy;

[0014] The actual values ​​of the influencing parameters are input into the strategy optimization model so that the strategy optimization model outputs the target deployment strategy.

[0015] As an improvement to the above solution, after calculating the difference evaluation value of each reference deployment strategy based on the actual value of the influencing parameter and the standard value of the influencing parameter, the method further includes:

[0016] When there is a difference evaluation value that is smaller than the difference evaluation threshold, the reference deployment strategy corresponding to the difference evaluation value that is currently smaller than the difference evaluation threshold is used as the target deployment strategy.

[0017] As an improvement to the above solution, the step of selecting a target deployment strategy from the candidate deployment strategies includes:

[0018] For each candidate deployment strategy, comparing the standard value of the impact parameter with the parameter threshold in the safe deployment condition to determine whether the candidate deployment strategy meets the safe deployment condition;

[0019] If there are at least two candidate deployment strategies that meet the security deployment condition, a target deployment strategy is selected from the candidate deployment strategies according to a preset priority of the impact parameters.

[0020] As an improvement to the above solution, the environmental information includes at least one of ground shaking information, soil information and meteorological information.

[0021] As an improvement to the above-mentioned scheme, the ground shaking information includes the ground shaking frequency and the ground shaking amplitude, the composite pile parameters include the mass of the variable-section composite pile, and the actual value of the influencing parameter includes the amplitude amplification coefficient calculated based on the ground shaking frequency, the ground shaking amplitude and the mass of the variable-section composite pile.

[0022] As an improvement to the above scheme, the soil information includes pH and chloride ion concentration, the composite pile parameters include the material coefficient of the variable-section composite pile, and the actual value of the influencing parameter includes the corrosion depth of the variable-section composite pile material calculated based on pH, chloride ion concentration and material coefficient.

[0023] As an improvement to the above scheme, the soil information includes the soil porosity ratio, the composite pile parameters include the end area, bottom expansion depth, diameter and unit friction resistance of the variable-section composite pile, and the actual values ​​of the influencing parameters include the side friction resistance calculated based on the soil porosity ratio and unit friction resistance, and the bottom expansion pile end bearing capacity of the variable-section composite pile calculated based on the end area, bottom expansion depth and diameter.

[0024] As an improvement of the above scheme, the meteorological information includes ambient temperature, ambient humidity, air density value and wind parameters, the composite pile parameters include the material frost heave coefficient of the variable-section composite pile, and the actual values ​​of the influencing parameters include the frost heave lateral pressure calculated based on the ambient temperature and the material frost heave coefficient, the carbonization degree value calculated based on the ambient humidity and the carbonization diffusion coefficient, and the wind cyclic load stress value calculated based on the air density value and wind parameters.

[0025] To achieve the above objectives, an embodiment of the present invention further provides a variable-section composite pile deployment system, comprising:

[0026] An environmental information acquisition module is used to obtain environmental information of the deployment area where the variable-section composite piles are to be erected;

[0027] an influencing parameter actual value calculation module, configured to calculate the influencing parameter actual value based on the environmental information and the composite pile parameters of the variable-section composite pile;

[0028] a difference evaluation value calculation module, configured to obtain standard values ​​of influencing parameters corresponding to at least two reference deployment strategies, and calculate a difference evaluation value for each reference deployment strategy based on the actual values ​​of the influencing parameters and the standard values ​​of the influencing parameters; wherein each reference deployment strategy corresponds to a deployment mode of a variable-section composite pile combination;

[0029] a target deployment strategy acquisition module, configured to, when at least two difference evaluation values ​​are smaller than a preset difference evaluation threshold, acquire candidate deployment strategies corresponding to difference evaluation values ​​smaller than the difference evaluation threshold, and select a target deployment strategy from the candidate deployment strategies;

[0030] A deployment module is used to deploy variable-section composite piles in the deployment area according to the deployment method of variable-section composite piles in the target deployment strategy.

[0031] Compared to the existing technology, the variable-section composite pile deployment method and system disclosed in the present invention first collects environmental information of the variable-section composite pile deployment area and calculates the actual value of the influencing parameter based on the composite pile parameters; then obtains the standard value of the influencing parameter of the reference deployment strategy and compares it with the actual value of the influencing parameter to obtain the difference evaluation value of each reference deployment strategy. By comparing the standard value of the influencing parameter with the actual value, the adaptability of different composite pile combinations is uniformly measured; when at least two difference evaluation values ​​are less than a threshold, it indicates that a relatively ideal reference deployment strategy exists at this time. The best-fitting target deployment strategy is then selected from the two, and finally, the variable-section composite piles are deployed in the deployment area according to the target deployment strategy. This achieves scientific and efficient deployment, and eliminates the need for human judgment when deploying the variable-section composite piles, so that the deployed variable-section composite piles can obtain both quality and deployment efficiency. In addition, by integrating environmental information and composite pile parameters, this solution realizes the collaborative analysis of multi-dimensional parameters, avoids decision-making loopholes caused by single-factor evaluation, and improves the reliability of variable-section composite pile deployment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a flow chart of a method for deploying variable-section composite piles provided by an embodiment of the present invention;

[0033] Figure 2 is another flow chart of a method for deploying variable-section composite piles provided by an embodiment of the present invention;

[0034] Figure 3 This is a structural block diagram of a variable-section composite pile deployment system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] See also Figure 1 , Figure 1 1 is a flow chart of a variable-section composite pile deployment method provided by an embodiment of the present invention, the variable-section composite pile deployment method comprising:

[0037] S1. Obtaining environmental information of the deployment area where variable-section composite piles are to be erected;

[0038] S2. Calculating actual values ​​of influencing parameters based on the environmental information and the composite pile parameters of the variable-cross-section composite pile;

[0039] S3. Obtaining standard values ​​of influencing parameters corresponding to at least two reference deployment strategies, and calculating a difference evaluation value for each reference deployment strategy based on the actual values ​​of the influencing parameters and the standard values ​​of the influencing parameters; wherein each reference deployment strategy corresponds to a deployment mode of a variable-section composite pile combination;

[0040] S4. When there are at least two difference evaluation values ​​smaller than a preset difference evaluation threshold, obtaining candidate deployment strategies corresponding to the difference evaluation values ​​smaller than the difference evaluation threshold, and selecting a target deployment strategy from the candidate deployment strategies;

[0041] S5. Deploy variable-section composite piles in the deployment area according to the deployment method of the variable-section composite piles in the target deployment strategy.

[0042] Exemplarily, by first collecting environmental information of the variable-section composite pile deployment area, and combining it with the composite pile parameter calculation to obtain the actual value of the influencing parameter; then obtaining the standard value of the influencing parameter of the reference deployment strategy, and comparing it with the actual value of the influencing parameter to obtain the difference evaluation value of each reference deployment strategy, by comparing the standard value of the influencing parameter with the actual value, the adaptability of different composite pile combinations has a unified measurement standard; when at least two difference evaluation values ​​are less than the threshold, it means that there is a more ideal reference deployment strategy at this time, and then the best-fit target deployment strategy is selected from it, and finally, the variable-section composite piles are deployed in the deployment area according to the target deployment strategy, so as to achieve scientific and efficient deployment, and no human judgment is required when deploying the variable-section composite piles, so that the deployed variable-section composite piles can be doubly guaranteed in quality and deployment efficiency.

[0043] Specifically, in step S1, the environmental information includes at least one of ground vibration information, soil information, and meteorological information. A field survey of the deployment area can be conducted in advance using various data acquisition devices to collect information such as ground vibration, soil, and meteorological information. The collected data is then analyzed and stored in a database. After all data is collected, it is then uniformly analyzed and processed (e.g., data cleaning, outlier removal, normalization / averaging, encoding, etc.) to obtain the final environmental information. The detailed information and collection process for the above three types of information are as follows:

[0044] 1) Ground vibration information, including ground vibration frequency and ground vibration amplitude. Ground vibration frequency represents the periodic frequency of surface or shallow soil vibration within the deployment area, reflecting the frequency of the vibration source (such as traffic or mechanical operation). Ground vibration amplitude represents the displacement amplitude of surface vibration, reflecting the strength of the vibration energy and directly affecting the dynamic response of the pile foundation. This can be collected using high-precision vibration monitors (such as accelerometers and seismometers) or laser displacement meters deployed in the deployment area. This can be done by continuously monitoring at least one complete vibration cycle, recording the time-domain vibration waveform, and using signal processing methods such as Fourier transform to extract the vibration frequency components and corresponding amplitude peaks. Frequency and amplitude extremes can then be analyzed.

[0045] 2) Soil information, including pH, chloride ion concentration, and soil porosity. pH indicates the acidity or alkalinity of the soil solution, which affects the corrosion rate of pile foundation materials (such as concrete and steel). Chloride ion concentration indicates the amount of free chloride ions in the soil; high chloride concentrations accelerate metal corrosion. The porosity represents the ratio of pore volume to solid particle volume in the soil, reflecting soil density and bearing capacity. The smaller the porosity, the denser the soil. This soil information is collected using soil samplers, pH test paper / acidity meters, and chloride ion content meters. Sampling is performed in stratified layers at different depths (e.g., 0-1m, 1-3m, and 3-5m), and analyzed.

[0046] 3) Meteorological information, including ambient temperature, humidity, air density, and wind parameters. Ambient temperature refers to the air temperature in the deployment area, which affects the thermal expansion and contraction of pile foundation materials and the frost heave effect in permafrost areas. Humidity refers to the relative humidity of the air, which affects the carbonation rate of concrete and the corrosion environment of steel. Air density represents the mass of air per unit volume and, when combined with wind, affects the calculation of wind loads on pile foundations. Wind parameters reflect the dynamic effects of wind on pile foundation structures. This meteorological information can be collected and analyzed using temperature and humidity sensors, anemometers, and other sensors.

[0047] Specifically, in step S2, actual values ​​of influencing parameters are calculated based on the environmental information and the composite pile parameters of the variable-cross-section composite pile.

[0048] For example, since there are multiple types of environmental information, there are also multiple corresponding actual values ​​of the influencing parameters. In the embodiment of the present invention, the actual values ​​of the influencing parameters include seven: amplitude amplification coefficient, corrosion depth of variable-section composite pile materials, lateral friction resistance, expanded bottom pile end bearing capacity, frost heave lateral pressure, carbonization degree value, and wind cycle load stress value. The actual values ​​of these seven influencing parameters reflect the degree of influence of the deployment area environment on the variable-section composite pile. When calculating these seven actual values, it is necessary to combine the composite pile parameters of the variable-section composite pile to complete the calculation. The composite pile parameters of the variable-section composite pile include material coefficient, mass of the variable-section composite pile, end area, expanded bottom depth, diameter, unit friction resistance, and material frost heave coefficient. Among them, the material coefficient is a parameter related to the corrosion resistance of the variable-section composite pile; the end area refers to the cross-sectional area of ​​the bottom of the expanded base of the variable-section composite pile, which is determined by the pile diameter and the expanded base size; the expanded base depth refers to the vertical extension depth of the bottom of the variable-section composite pile; the unit friction resistance refers to the friction resistance per unit area on the contact interface between the variable-section composite pile and the soil; the material frost heave coefficient refers to the volume expansion rate of the material caused by freeze-thaw cycles in a low-temperature environment, which affects the frost resistance of the pile.

[0049] It should be noted that the above-mentioned composite pile parameters can be obtained by looking up the specification table (pre-measurement of different types of variable-section composite piles), or by actual measurement of the variable-section composite piles.

[0050] Specifically, when the ground shaking information includes the ground shaking frequency and the ground shaking amplitude, the composite pile parameter includes the mass of the variable-section composite pile, and the actual value of the influencing parameter includes the amplitude amplification coefficient calculated based on the ground shaking frequency, the ground shaking amplitude and the mass of the variable-section composite pile.

[0051] Exemplarily, the calculation process of the amplitude magnification factor satisfies the following formula:

[0052] (1);

[0053] in, is the amplitude amplification coefficient, which reflects the degree of amplitude amplification when ground vibration is transmitted to the variable-section composite pile; is the ground jitter amplitude; The damping ratio of the soil refers to the ratio of the damping force to the maximum restoring force during the vibration of the structure. It is a parameter that measures the vibration attenuation characteristics of the structure and can be obtained in advance through on-site or laboratory dynamic tests. The frequency ratio of the common vibration refers to the ratio of the pile's natural frequency to the external excitation frequency, which is used to determine whether the pile will resonate. The specific expression is: , where is the ground jitter frequency; is the pile-soil equivalent stiffness, It refers to the stiffness of the pile and the surrounding soil when the pile and the surrounding soil are considered as a whole. It reflects the ability of the pile-soil system to resist deformation. The pile-soil equivalent stiffness can be calculated in advance based on the type, size, material properties and soil properties of the pile using relevant theoretical formulas, such as , It represents the shear modulus of the soil around the pile, reflecting the shear resistance of the soil. represents the diameter of the pile, Indicates the length of the pile. In practical application, it can be obtained by the actual size of the variable-section composite pile and the soil type index; The pile-soil equivalent mass refers to the mass of the pile and the surrounding soil when the pile and the surrounding soil are regarded as a whole. It reflects the inertial characteristics of the pile-soil system. It can be obtained by adding the mass of the pile and the mass of the surrounding soil after deployment through on-site or laboratory simulation. In actual application, it can be obtained through the actual mass and model index of the variable-section composite pile.

[0054] In this embodiment of the present invention, by precisely incorporating the frequency and amplitude of ground vibration, the actual impact of vibration on variable-section composite piles can be accurately quantified. Furthermore, the amplitude amplification factor provides data support for selecting deployment strategies. By calculating the actual value, the pile type and deployment method that minimizes the amplitude response and optimizes stability under specific ground vibration conditions can be specifically selected. This avoids blindly adopting high-cost or inappropriate pile types, thereby achieving economical and rational design.

[0055] Specifically, when the soil information includes pH and chloride ion concentration, the composite pile parameter includes the material coefficient of the variable-section composite pile, and the actual value of the influencing parameter includes the corrosion depth of the variable-section composite pile material calculated based on pH, chloride ion concentration and material coefficient.

[0056] For example, the calculation process of the corrosion depth of the variable-section composite pile material satisfies the following formula:

[0057] (2);

[0058] in, is the corrosion depth of the variable-section composite pile material; is the material coefficient of the variable-section composite pile; is the pH of the soil, is the chloride ion concentration.

[0059] In this embodiment of the present invention, by integrating soil pH, chloride ion concentration, and the material's corrosion resistance coefficient, the real-time corrosion depth of composite pile materials can be accurately calculated. This formula directly reflects the rate of pile foundation degradation in specific soil environments, avoiding the overestimation of durability caused by traditional empirical judgment. Furthermore, the corrosion depth of variable-section composite pile materials is incorporated into pile foundation design specifications, forming a standardized assessment process to avoid quality variations caused by subjective judgments by different experts.

[0060] Specifically, the soil information includes the soil porosity ratio, the composite pile parameters include the end area, bottom expansion depth, diameter and unit friction resistance of the variable-section composite pile, and the actual values ​​of the influencing parameters include the side friction resistance calculated based on the soil porosity ratio and unit friction resistance, and the bottom expansion pile end bearing capacity of the variable-section composite pile calculated based on the end area, bottom expansion depth and diameter.

[0061] Exemplarily, the calculation process of the lateral friction resistance satisfies the following formula:

[0062] (3);

[0063] in, The side friction resistance refers to the friction force of the soil on the pile side. For the The unit friction resistance of the soil layer can be obtained in advance through laboratory measurement; For the The lateral surface area of ​​the composite pile body with a layer of soil corresponding to the strain section; For the The porosity ratio of the soil layer, 、 are the maximum and minimum values ​​of soil porosity, respectively.

[0064] For example, the calculation process of the end bearing capacity of the expanded base pile of the variable cross-section composite pile satisfies the following formula:

[0065] (4);

[0066] in, To bear the end load of the expanded pile of variable cross-section composite pile; is the end area of ​​the variable cross-section composite pile; The bearing capacity coefficient comprehensively reflects the influence of soil properties (such as soil cohesion and internal friction angle) on the bearing capacity of variable-section composite piles and can be obtained through laboratory prediction; The effective vertical stress refers to the actual stress borne by the soil in the vertical direction, that is, the stress borne by the soil particle skeleton after deducting the pore water pressure, which can be obtained through laboratory prediction; 、 are the expanded base depth and diameter of the variable-section composite pile, respectively.

[0067] In an embodiment of the present invention, the soil porosity directly reflects soil density. The smaller the porosity, the denser the soil and the greater the unit friction. By combining the two to calculate the side friction, the friction between the soil on the pile side and the pile body can be accurately quantified. The calculated side friction can truly reflect the pile side bearing capacity, avoiding safety hazards caused by conservative or overestimated pile foundation design due to underestimation of side friction. The end area, expanded bottom depth, and diameter are key geometric parameters that determine the end bearing capacity of the expanded bottom pile. When the end area and expanded bottom depth are reasonably set, the pile end bearing area and soil support effect are stronger. Combining these parameters can scientifically calculate the end bearing capacity.

[0068] Specifically, the meteorological information includes ambient temperature, ambient humidity, air density value and wind parameters; the composite pile parameters include the material frost heave coefficient of the variable-section composite pile; the actual values ​​of the influencing parameters include the frost heave lateral pressure calculated based on the ambient temperature and the material frost heave coefficient, the carbonization degree value calculated based on the ambient humidity and the carbonization diffusion coefficient, and the wind cyclic load stress value calculated based on the air density value and wind parameters.

[0069] For example, the calculation process of the frost heave lateral pressure satisfies the following formula:

[0070] (5);

[0071] in, is the lateral pressure of frost heave, which represents the lateral pressure of frost heave on the variable-section composite pile; is the material frost heave coefficient of the variable-section composite pile; is the temperature difference, that is, the decrease in ambient temperature within a set time (such as one year); is the water density, i.e. the weight of water per unit volume of soil, which can be obtained by measuring the soil over a set period of time (e.g. one year) (taking the average value); The depth of frost heave refers to the vertical depth of soil freezing, which can be obtained after laboratory measurement of simulated environment.

[0072] Exemplarily, the calculation process of the carbonization degree value satisfies the following formula:

[0073] (6);

[0074] in, is the carbonization degree value, which indicates the carbonization degree value of the mixed soil of the variable-section composite pile; The carbonization diffusion coefficient reflects the diffusion rate of carbon dioxide in concrete. The increase in carbonization depth will reduce the alkalinity of concrete. This coefficient can be measured on soil in the laboratory. It is the relative humidity value, which is determined according to the ambient humidity.

[0075] For example, the calculation process of the wind cycle load stress value satisfies the following formula:

[0076] (7);

[0077] in, is the stress value of wind cycle load; is the air density value; is the wind force parameter, obtained through measurement and calculation, Can include At least one of (including at least two, take the product); wherein, It is a proportional parameter between stress value and wind load. This parameter indicates the proportional relationship between the stress value of the structure and the wind load, and reflects the sensitivity of the structural stress response under wind load. It is a parameter proportional to the basic wind pressure and air density, reflecting the proportional characteristics of the basic wind pressure changing with the air density; is the wind vibration coefficient, which is used to consider the pulsation effect of wind and the amplification effect of structural dynamic characteristics on wind loads; The wind load shape coefficient reflects the ratio of the pressure (or suction) generated by the wind on the surface of the structure to the theoretical wind pressure calculated by wind speed; is the wind pressure height variation coefficient, which characterizes the law of wind pressure variation with height.

[0078] In an embodiment of the present invention, ambient temperature and the material frost heave coefficient are combined to calculate the frost heave lateral pressure, accurately quantifying the impact of temperature changes on pile foundations in cold regions. Ambient humidity and the carbonation diffusion coefficient are combined to calculate the carbonation degree, accurately assessing the impact of atmospheric humidity on the carbonation of pile foundation concrete. Air density and wind parameters are combined to calculate wind cyclic load stress, accurately analyzing the effects of wind on pile foundations.

[0079] Specifically, in step S3, the standard values ​​of the influencing parameters corresponding to at least two reference deployment strategies are obtained, and the difference evaluation value of each reference deployment strategy is calculated based on the actual value of the influencing parameter and the standard value of the influencing parameter; wherein each reference deployment strategy corresponds to a deployment method of a variable-section composite pile combination.

[0080] It should be noted that the reference deployment strategy is the optimal deployment strategy among historical deployment methods, which records the deployment method of the variable-section composite pile combination, such as how many variable-section composite piles are deployed (i.e., the variable-section composite pile combination), the maximum deployment interval, minimum deployment interval, and deployment depth of the variable-section composite piles, etc. It further includes the standard value of the influencing parameter, which is the actual value of the influencing parameter measured when the reference deployment strategy is deploying the variable-section composite piles. The standard value of the influencing parameter corresponds one-to-one to the actual value of the influencing parameter.

[0081] For example, for each reference deployment strategy, the calculation process of the corresponding difference evaluation value satisfies the following formula:

[0082] (8);

[0083] in, For the The difference evaluation value corresponding to the reference deployment strategy. The smaller the difference evaluation value, the more consistent the deployment area is with the reference deployment strategy. is the number of actual values ​​of the influencing parameters, For the The weights that affect the actual value of the parameter, For the The actual value of the influencing parameter, For the The standard value of the influencing parameter, ; is a weighted evaluation function, which can be obtained by weighted summation based on the emphasis of the reference deployment strategy during deployment, such as ,or , 、 、 are the weights of the environment, transportation requirements and economy for variable cross-section composite pile erection, 、 、 They are the environmental, transportation demand and economic characterization values ​​of variable-section composite pile erection.

[0084] Specifically, in step S4, when there are at least two difference evaluation values ​​smaller than a preset difference evaluation threshold, candidate deployment strategies corresponding to the difference evaluation values ​​smaller than the difference evaluation threshold are obtained, and a target deployment strategy is selected from the candidate deployment strategies.

[0085] For example, when one difference evaluation value is less than the difference evaluation threshold, the reference deployment strategy corresponding to the difference evaluation value currently less than the difference evaluation threshold is selected as the target deployment strategy. When at least two difference evaluation values ​​are less than the preset difference evaluation threshold, indicating that there are multiple reference deployment strategies that meet the requirements of the deployment area, the reference deployment strategy corresponding to the smallest difference evaluation value is not directly selected as the target deployment strategy. Instead, a target deployment strategy is selected from at least two candidate deployment strategies.

[0086] Specifically, selecting a target deployment strategy from the candidate deployment strategies includes: for each candidate deployment strategy, comparing the standard value of the influencing parameter with the parameter threshold in the safe deployment condition to determine whether the candidate deployment strategy meets the safe deployment condition; if there are at least two candidate deployment strategies that meet the safe deployment condition, selecting a target deployment strategy from the candidate deployment strategies according to a preset priority of the influencing parameter.

[0087] For example, each standard value for an influencing parameter has a corresponding parameter threshold. For each candidate deployment strategy, the standard value for each influencing parameter needs to be carefully compared with the parameter threshold in the safe deployment conditions. The standard values ​​for influencing parameters also include amplitude amplification factor, corrosion depth of variable-section composite pile materials, lateral friction resistance, expanded pile end bearing capacity, frost heave lateral pressure, carbonization degree value, and wind cycle load stress value. For these standard values ​​for influencing parameters, parameter threshold comparison examples are given:

[0088] 1) Amplitude amplification factor. A threshold for the amplitude amplification factor is set as a safety condition. If the standard value of the amplitude amplification factor is less than or equal to the threshold, it indicates that the amplification of the pile amplitude under this strategy is within a safe and controllable range in response to ground vibration. If it is greater than the threshold, the pile may face the risk of structural damage in a vibrating environment, and the strategy does not meet the safety condition.

[0089] 2) The corrosion depth of the variable-section composite pile material. A corrosion depth threshold is set as a safety condition. When the corrosion depth standard value is less than or equal to the corrosion depth threshold, it means that the corrosion of the pile material will not pose a serious threat to its bearing capacity and stability within the expected service life. Conversely, if the threshold is exceeded, the pile may suffer from strength loss and structural damage due to excessive corrosion, and this strategy does not meet safety requirements.

[0090] 3) Lateral friction resistance: A lateral friction resistance threshold is set as a safe deployment condition. If the lateral friction resistance standard value is greater than or equal to the threshold, it indicates that the soil around the pile can provide sufficient friction for the pile to bear the corresponding load. If it is less than the threshold, the pile may experience excessive settlement, tilt, or even instability due to insufficient lateral friction resistance, and the strategy does not meet the safe deployment conditions.

[0091] 4) Bearing capacity of the expanded base pile tip. A threshold for the bearing capacity of the expanded base pile tip is set as a safety condition. If the bearing capacity of the expanded base pile tip is greater than or equal to the threshold, it indicates that the soil at the pile tip can effectively support the upper load of the pile. If it is less than the threshold, the pile tip may be unable to withstand the load, causing the pile to sink or even fail. This strategy does not meet the safety conditions.

[0092] 5) Frost heave lateral pressure: A threshold for frost heave lateral pressure is set as a safety deployment condition. When the standard bearing capacity of the expanded pile end is greater than or equal to this threshold, it indicates that the pile end can effectively support the upper load of the pile body. If it is less than this threshold, the pile end may be unable to withstand the load, causing the pile body to sink or be damaged. This strategy does not meet the safety deployment conditions.

[0093] 6) Carbonization degree value: A carbonization degree threshold is set as a safety deployment condition. If the standard carbonization degree value is less than or equal to the threshold, the carbonization of the pile concrete will not pose a serious corrosion threat to the internal steel bars. If it exceeds the threshold, the steel bars may lose alkaline protection due to carbonization and corrode faster, thus affecting the safety of the pile structure. This strategy does not meet the safety deployment conditions.

[0094] 7) Wind cyclic load stress value. A wind cyclic load stress threshold is set as a safe deployment condition. If the standard value of the wind cyclic load stress value is less than or equal to the threshold, it indicates that the stress on the pile body under the action of wind cyclic load is within the safety limit and will not cause structural fatigue damage due to wind force. If it is greater than the threshold, the pile body may experience cracks, fractures, etc. due to excessive wind stress, and the strategy does not meet the safe deployment conditions.

[0095] For example, if only one candidate deployment strategy meets the above-mentioned safe deployment conditions, the candidate deployment strategy is used as the target deployment strategy. If at least two candidate deployment strategies meet the above-mentioned safe deployment conditions, a target deployment strategy is selected from these candidate deployment strategies based on the preset impact parameter priority. The impact parameter priority is determined based on the specific situation and key requirements of the project. The following examples are given:

[0096] A. If the project is located in an earthquake-prone area, where the impact of ground vibration on piles is critical, the amplitude amplification factor will be prioritized. Among candidate deployment strategies that meet the safety requirements, the candidate with the smallest amplitude amplification factor is compared and selected as the target deployment strategy. This is because a smaller amplitude amplification factor means piles are less likely to be damaged by excessive amplitude in vibration environments such as earthquakes.

[0097] B. If the project is located in a highly corrosive soil environment, the corrosion depth of the variable-cross-section composite pile material becomes a critical parameter and is given a higher priority. Among candidate strategies that meet safety requirements, the strategy with the lowest corrosion depth is prioritized for comparison and selected as the target deployment strategy to ensure that the pile will not fail due to excessive corrosion over the long term.

[0098] C. If the project is located in a windy and strong area, the wind cyclic load stress value will be prioritized. Among the candidate strategies that meet the safe deployment conditions, the candidate with the smallest wind cyclic load stress value will be compared and selected as the target deployment strategy to ensure the structural safety of the pile under strong winds.

[0099] In an embodiment of the present invention, by comparing the standard value of the influencing parameter with the parameter threshold in the safe deployment condition, it is possible to accurately judge whether the candidate deployment strategy has risks in terms of amplitude amplification, material corrosion, load bearing, etc., so as to perform judgment and screening before deployment, and to identify and eliminate strategies that do not meet the safe deployment conditions in advance, avoid adopting solutions with safety hazards, reduce safety accidents caused by improper design during the use of the pile foundation from the source, and ensure the stable operation of the pile foundation during its service life.

[0100] Specifically, in step S5, variable-section composite piles are deployed in the deployment area according to the deployment method of the variable-section composite piles in the target deployment strategy, such as the number of variable-section composite piles to be deployed, the maximum deployment interval, the minimum deployment interval, the deployment depth, etc. of the variable-section composite piles.

[0101] Further, see Figure 2 , Figure 2 is another flow chart of a method for deploying a variable-section composite pile provided by an embodiment of the present invention. After executing step S3, the method further includes:

[0102] S31. When all difference evaluation values ​​are greater than or equal to the difference evaluation threshold, compare the actual value of each influencing parameter with the standard value of the influencing parameter in the reference deployment strategy, and find the standard value of the influencing parameter with the minimum difference;

[0103] S32. Obtain a standard deployment strategy corresponding to the standard value of the influencing parameter with the smallest difference;

[0104] S33. Constructing a strategy optimization model using the standard values ​​of the influencing parameters and the deployment method of the standard deployment strategy;

[0105] S34. Input the actual value of the influencing parameter into the strategy optimization model so that the strategy optimization model outputs the target deployment strategy.

[0106] For example, when all difference evaluation values ​​are greater than or equal to a pre-set difference evaluation threshold, it indicates that no current reference deployment strategy can perfectly match the actual conditions of the deployment area and achieve the ideal level of fit. At this point, it is necessary to find the value closest to the ideal state, i.e., the minimum difference evaluation value, among these relatively less-than-ideal but necessary-to-choose difference evaluation values. This process is similar to selecting one or more options that are relatively consistent with the standard from a group of options that do not quite meet the standard but must be selected, providing a basis for subsequent strategy selection. The standard values ​​of the influencing parameters and deployment methods of the standard deployment strategy are used as construction parameters for the strategy optimization model. These standard values ​​represent the performance indicators and deployment methods that variable-section composite piles should have under relatively ideal conditions. The strategy optimization model can learn the mapping relationship between deployment methods and standard values ​​in these standard deployment strategies. Therefore, after inputting the actual values ​​of the influencing parameters, it can output the most suitable deployment method, i.e., the target deployment strategy.

[0107] Exemplarily, the standard values ​​of the influencing parameters and the deployment method of the above-determined standard deployment strategy are input into the strategy optimization model. For example, the strategy optimization model is a neural network model. The strategy optimization model can conduct in-depth analysis and processing of the input parameters and learn the laws therein. During training, the standard values ​​of the influencing parameters are used as feature parameters, and the deployment method is used as the annotation result. After continuous iterative calculation and optimization adjustment, the model training is completed. It should be noted that the training process of the neural network model can refer to the existing technology, and the present invention will not go into details. Finally, after inputting the actual values ​​of the influencing parameters, the strategy optimization model can output the most suitable target deployment strategy. This strategy is obtained through scientific optimization under existing conditions and can guarantee the stable operation and efficient work of the variable-section composite piles in the deployment area to the greatest extent.

[0108] In an embodiment of the present invention, when all difference evaluation values ​​do not meet the ideal standard, the minimum difference evaluation value and its corresponding strategy are selected, and the deployment solution that best meets the actual needs can be found among the limited choices. Subsequently, the optimization model is combined with further optimization based on actual parameters and standard parameters, so that the final target deployment strategy can better adapt to the environmental conditions and engineering requirements of the deployment area, fill the gap between the initial strategy and the actual situation, and improve the strategy's adaptability to complex environments. Using quantitative difference evaluation values ​​and clear parameters as the basis for decision-making avoids the uncertainty and blindness brought about by subjective experience judgment. The optimization model is based on algorithms and large amounts of data, and can find the optimal solution from complex parameter relationships, making the decision-making process more scientific and rigorous, and providing reliable guidance for engineering design and construction.

[0109] See also Figure 3 , Figure 31 is a structural block diagram of a variable-section composite pile deployment system 100 provided in an embodiment of the present invention. The variable-section composite pile deployment system 100 includes:

[0110] An environmental information acquisition module 11 is used to acquire environmental information of the deployment area where the variable-section composite piles are to be erected;

[0111] An influencing parameter actual value calculation module 12 is used to calculate the influencing parameter actual value based on the environmental information and the composite pile parameters of the variable-section composite pile;

[0112] A difference evaluation value calculation module 13 is configured to obtain standard values ​​of influencing parameters corresponding to at least two reference deployment strategies, and calculate a difference evaluation value for each reference deployment strategy based on the actual values ​​of the influencing parameters and the standard values ​​of the influencing parameters; wherein each reference deployment strategy corresponds to a deployment mode of a variable-section composite pile combination;

[0113] A target deployment strategy acquisition module 14 is configured to, when at least two difference evaluation values ​​are smaller than a preset difference evaluation threshold, acquire candidate deployment strategies corresponding to difference evaluation values ​​smaller than the difference evaluation threshold, and select a target deployment strategy from the candidate deployment strategies;

[0114] The deployment module 15 is configured to deploy the variable-section composite piles in the deployment area according to the deployment method of the variable-section composite piles in the target deployment strategy.

[0115] Specifically, the target deployment strategy acquisition module 14 is also used to: when all difference evaluation values ​​are greater than or equal to the difference evaluation threshold, compare the actual value of each influencing parameter with the standard value of the influencing parameter in the reference deployment strategy, and find the standard value of the influencing parameter with the smallest difference; obtain the standard deployment strategy corresponding to the standard value of the influencing parameter with the smallest difference; use the standard value of the influencing parameter and the deployment method of the standard deployment strategy to construct a strategy optimization model; input the actual value of the influencing parameter into the strategy optimization model, so that the strategy optimization model outputs the target deployment strategy.

[0116] Specifically, the target deployment strategy acquisition module 14 is further configured to: when there is a difference evaluation value smaller than the difference evaluation threshold, use the reference deployment strategy corresponding to the difference evaluation value currently smaller than the difference evaluation threshold as the target deployment strategy.

[0117] Specifically, when there are at least two difference evaluation values ​​that are smaller than a preset difference evaluation threshold, the target deployment strategy acquisition module 14 is further configured to: for each candidate deployment strategy, compare the standard value of the impact parameter with the parameter threshold in the safe deployment condition to determine whether the candidate deployment strategy meets the safe deployment condition; if there are at least two candidate deployment strategies that meet the safe deployment condition, select a target deployment strategy from the candidate deployment strategies based on a preset priority of the impact parameter.

[0118] It is worth noting that the working process of each module in the variable-section composite pile deployment system 100 described in the embodiment of the present invention can refer to the working process of the variable-section composite pile deployment method described in the above embodiment, and will not be repeated here.

[0119] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for deploying variable-section composite piles, characterized in that: include: Obtaining environmental information of the deployment area where the variable-section composite piles are to be erected; Calculating actual values ​​of influencing parameters based on the environmental information and the composite pile parameters of the variable-section composite pile; wherein the actual values ​​of influencing parameters include amplitude amplification factor, corrosion depth of the variable-section composite pile material, lateral friction resistance, expanded base pile end bearing capacity, frost heave lateral pressure, carbonization degree value, and wind cycle load stress value; Obtaining standard values ​​of influencing parameters corresponding to at least two reference deployment strategies, and calculating a difference evaluation value for each reference deployment strategy based on the actual value of the influencing parameter and the standard value of the influencing parameter; wherein each reference deployment strategy corresponds to a deployment mode of a variable-section composite pile combination; When there are at least two difference evaluation values ​​smaller than a preset difference evaluation threshold, obtaining candidate deployment strategies corresponding to the difference evaluation values ​​smaller than the difference evaluation threshold, and selecting a target deployment strategy from the candidate deployment strategies; Deploying the variable-section composite piles in the deployment area according to the deployment method of the variable-section composite piles in the target deployment strategy; Among them, selecting a target deployment strategy from the candidate deployment strategies includes: for each candidate deployment strategy, comparing the standard value of the impact parameter with the parameter threshold in the safe deployment condition to determine whether the candidate deployment strategy meets the safe deployment condition; if there are at least two candidate deployment strategies that meet the safe deployment condition, selecting a target deployment strategy from the candidate deployment strategies according to a preset impact parameter priority.

2. The variable cross-section composite pile deployment method according to claim 1, characterized in that: After calculating the difference evaluation value of each reference deployment strategy based on the actual value of the influencing parameter and the standard value of the influencing parameter, the method further includes: When all difference evaluation values ​​are greater than or equal to the difference evaluation threshold, compare the actual value of each influencing parameter with the standard value of the influencing parameter in the reference deployment strategy, and find the standard value of the influencing parameter with the minimum difference; Obtain the standard deployment strategy corresponding to the standard value of the influencing parameter with the smallest difference; Constructing a strategy optimization model using the standard values ​​of the influencing parameters and the deployment method of the standard deployment strategy; The actual values ​​of the influencing parameters are input into the strategy optimization model so that the strategy optimization model outputs the target deployment strategy.

3. The variable cross-section composite pile deployment method according to claim 1, characterized in that: After calculating the difference evaluation value of each reference deployment strategy based on the actual value of the influencing parameter and the standard value of the influencing parameter, the method further includes: When there is a difference evaluation value that is smaller than the difference evaluation threshold, the reference deployment strategy corresponding to the difference evaluation value that is currently smaller than the difference evaluation threshold is used as the target deployment strategy.

4. The variable cross-section composite pile deployment method according to claim 1, characterized in that: The environmental information includes at least one of ground shaking information, soil information and meteorological information.

5. The variable cross-section composite pile deployment method according to claim 4, characterized in that: The ground shaking information includes ground shaking frequency and ground shaking amplitude, the composite pile parameters include the mass of the variable-section composite pile, and the actual value of the influencing parameter includes the amplitude amplification coefficient calculated based on the ground shaking frequency, ground shaking amplitude and the mass of the variable-section composite pile.

6. The variable cross-section composite pile deployment method according to claim 4, characterized in that: The soil information includes pH and chloride ion concentration, the composite pile parameters include the material coefficient of the variable-section composite pile, and the actual value of the influencing parameter includes the corrosion depth of the variable-section composite pile material calculated based on pH, chloride ion concentration and material coefficient.

7. The variable cross-section composite pile deployment method according to claim 4, characterized in that: The soil information includes the soil porosity ratio, the composite pile parameters include the end area, bottom expansion depth, diameter and unit friction resistance of the variable-section composite pile, and the actual values ​​of the influencing parameters include the lateral friction resistance calculated based on the soil porosity ratio and unit friction resistance, and the bottom expansion pile end bearing capacity of the variable-section composite pile calculated based on the end area, bottom expansion depth and diameter.

8. The variable cross-section composite pile deployment method according to claim 4, characterized in that: The meteorological information includes ambient temperature, ambient humidity, air density value and wind parameters; the composite pile parameters include the material frost heave coefficient of the variable-section composite pile; the actual values ​​of the influencing parameters include the frost heave lateral pressure calculated based on the ambient temperature and the material frost heave coefficient, the carbonization degree value calculated based on the ambient humidity and the carbonization diffusion coefficient, and the wind cyclic load stress value calculated based on the air density value and wind parameters.

9. A variable cross-section composite pile deployment system, characterized in that: include: An environmental information acquisition module is used to obtain environmental information of the deployment area where the variable-section composite piles are to be erected; an influencing parameter actual value calculation module, configured to calculate the influencing parameter actual value based on the environmental information and the composite pile parameters of the variable-section composite pile; wherein the influencing parameter actual value includes the amplitude amplification factor, the corrosion depth of the variable-section composite pile material, the lateral friction resistance, the expanded pile end bearing capacity, the frost heave lateral pressure, the carbonization degree value, and the wind cycle load stress value; a difference evaluation value calculation module, configured to obtain standard values ​​of influencing parameters corresponding to at least two reference deployment strategies, and calculate a difference evaluation value for each reference deployment strategy based on the actual values ​​of the influencing parameters and the standard values ​​of the influencing parameters; wherein each reference deployment strategy corresponds to a deployment mode of a variable-section composite pile combination; a target deployment strategy acquisition module, configured to, when at least two difference evaluation values ​​are smaller than a preset difference evaluation threshold, acquire candidate deployment strategies corresponding to difference evaluation values ​​smaller than the difference evaluation threshold, and select a target deployment strategy from the candidate deployment strategies; A deployment module, configured to deploy variable-section composite piles in the deployment area according to the deployment method of the variable-section composite piles in the target deployment strategy; Among them, the target deployment strategy acquisition module is specifically used to: for each candidate deployment strategy, compare the standard value of the impact parameter with the parameter threshold in the safe deployment condition to determine whether the candidate deployment strategy meets the safe deployment condition; if there are at least two candidate deployment strategies that meet the safe deployment condition, select a target deployment strategy from the candidate deployment strategies according to the preset impact parameter priority.

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