A pile foundation optimization design method and system for large-area port loading environment

Abstract

The present application provides a pile foundation optimization design method and system for a large-area port loading environment, which relates to the technical field of industrial layout design. The port loading environment is divided into a plurality of pile foundation integration areas according to the ultimate bearing capacity of a single pile and the regional characteristics of the port loading environment, and then the load distribution characteristics of each pile foundation integration area are determined; the plurality of pile spacings under the port loading environment are determined according to the ultimate bearing capacity of a single pile and each load distribution characteristic, and then the reduction coefficient of the pile group bearing capacity under each pile spacing is determined according to the dynamic load test record of the response data; the confidence pile spacing of the pile foundation in the port loading environment is screened out from all the pile spacings using each reduction coefficient, and the pile foundation layout in the port loading environment is integratedly designed according to the confidence pile spacing. The present application can improve the pile foundation bearing capacity under the large-area port loading environment.

Description

Technical Field

[0001] The present application relates to the technical field of industrial layout design, and more specifically, to a pile foundation optimization design method and system for a large-area loading environment in a port. Background Art

[0002] Industrial layout design involves the rational configuration of production facilities, logistics systems, energy supply and environmental protection measures to improve production efficiency, reduce costs and optimize resource utilization. Traditional industrial layout mainly relies on empirical planning, with problems such as low space utilization, complex logistics routes and uneven energy distribution. With the development of intelligent manufacturing and industry, modern industrial layout gradually adopts digital twins, intelligent optimization algorithms and simulation technologies to achieve refined and flexible layout optimization.

[0003] In a large-scale loading environment at a port, there may be significant differences in the load characteristics of different areas. For example, the loads in some areas are concentrated, while those in other areas are dispersed. Traditional design methods fail to take into account the changes in different load characteristics, resulting in fixed pile spacing, which may be too large or too small. When the pile spacing is too large, the bearing capacity of the pile foundation is not fully utilized, resulting in the failure to effectively distribute the bearing capacity of the foundation. Some pile foundations bear too much load, which may easily lead to insufficient bearing capacity and uneven settlement problems, affecting the stability and safety of port facilities. If the pile spacing is too small, it may cause excessive interaction between the pile foundations, forming a large pile group effect, which in turn leads to a reduction in the bearing capacity of the pile group, and may even cause unnecessary construction difficulty and cost increase. Therefore, how to achieve the integrated design of the pile foundation spacing under the large-scale loading environment at the port, so as to improve the bearing capacity of the pile foundation under the large-scale loading environment at the port has become a difficult problem faced by the industry. Summary of the invention

[0004] The present application provides a pile foundation optimization design method and system for a large-area port loading environment, which can realize the integrated design of the pile foundation spacing in the large-area port loading environment, thereby improving the pile foundation bearing capacity in the large-area port loading environment.

[0005] In a first aspect, the present application provides a pile foundation optimization design method for a large-area port loading environment, the design method comprising the following steps:

[0006] Conduct static and dynamic load tests on pile foundations in a large-area port loading environment, and obtain the response data of pile foundations in the port loading environment;

[0007] Based on the static load test records of the response data, a finite element analysis is performed on the pile foundation performance to obtain the ultimate bearing capacity of a single pile of the pile foundation in the port loading environment;

[0008] Dividing the port loading environment into a plurality of pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, and then determining the load distribution characteristics of each pile foundation integration area;

[0009] Determine the spacing between multiple piles under the port loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics, and then determine the reduction factor of the pile group bearing capacity under each pile spacing according to the dynamic load test record of the response data;

[0010] The confidence pile spacing of the pile foundation in the port heap loading environment is screened out from all the pile spacings using various reduction factors, and the pile foundation layout in the port heap loading environment is integratedly designed using the confidence pile spacing.

[0011] In this embodiment, a static load test with step-by-step loading is used to carry out a static load test on a pile foundation in a large-area loading environment of a port.

[0012] In this embodiment, a dynamic load test using pulse vibration load is performed on a pile foundation in a large-area loading environment at a port.

[0013] In this embodiment, the finite element analysis of the pile foundation performance is performed based on the static load test record of the response data, and the single pile ultimate bearing capacity of the pile foundation in the port loading environment is obtained, which specifically includes:

[0014] The simulation model of pile, soil and contact interface in port loading environment is constructed by three-dimensional finite element method;

[0015] Setting load constraints between soil and piles in the simulation model based on the static load test record of the response data;

[0016] The performance of the pile foundation is analyzed by setting a simulation model with load constraints, and the ultimate bearing capacity of a single pile in the port loading environment is obtained.

[0017] In this embodiment, the port loading environment is divided into a plurality of pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, specifically including:

[0018] Acquire multiple pile foundation sub-areas in the port loading environment;

[0019] Extract the load characteristic value of each pile foundation sub-area from the regional characteristics of the port loading environment;

[0020] Clustering all load eigenvalues ​​into a plurality of load clusters according to the ultimate bearing capacity of the single pile;

[0021] The port loading environment is divided into multiple pile foundation integration areas according to each load cluster.

[0022] In this embodiment, determining the load distribution characteristics of each pile foundation integration area specifically includes:

[0023] For each pile foundation integration area, obtain the load characteristic value of each pile foundation sub-area in the pile foundation integration area;

[0024] The load distribution characteristics of the pile foundation integration area are determined according to all load characteristic values, and then the load distribution characteristics of each pile foundation integration area are obtained.

[0025] In this embodiment, determining the spacing between multiple piles under the port loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics specifically includes:

[0026] For each pile foundation integration area in the port loading environment, the interaction value between the pile body and the soil in the pile foundation integration area is determined by the load distribution characteristics of the pile foundation integration area;

[0027] Determine the limit spacing of pile foundations in the pile foundation integration area according to the interaction value and the single pile limit bearing capacity, and then determine the limit spacing of pile foundations in each pile foundation integration area;

[0028] Multiple pile spacings under port loading conditions are determined based on all limit spacings.

[0029] In this embodiment, determining the reduction factor of the pile group bearing capacity at each pile spacing according to the dynamic load test record of the response data specifically includes:

[0030] For each pile spacing, the interaction under the pile spacing is extracted from the dynamic load test record of the response data;

[0031] Based on the pile group effect, stress superposition is performed on the interaction to obtain the reduction factor of the pile group bearing capacity under the pile spacing, and then the reduction factor of the pile group bearing capacity under each pile spacing is obtained.

[0032] In this embodiment, the use of various reduction factors to select the confident pile spacing of the pile foundation in the port loading environment from all the pile spacings specifically includes:

[0033] Obtain the reduction threshold of the pile spacing in the port loading environment;

[0034] The pile spacing corresponding to the reduction factor higher than the reduction threshold is taken as the confident pile spacing of the pile foundation in the port loading environment.

[0035] In a second aspect, the present application provides a pile foundation optimization design system for a large-area port loading environment, which is used to perform a pile foundation optimization design method for a large-area port loading environment. The design system includes:

[0036] The test module is used to perform static and dynamic load tests on pile foundations in a large-area port loading environment, and then obtain the response data of the pile foundation in the port loading environment;

[0037] A finite element analysis module, used to perform finite element analysis on pile foundation performance based on the static load test record of the response data, and obtain the ultimate bearing capacity of a single pile of the pile foundation in a port loading environment;

[0038] A division module, used to divide the port loading environment into a plurality of pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, and then determine the load distribution characteristics of each pile foundation integration area;

[0039] A reduction determination module is used to determine the spacing between multiple piles under the port loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics, and then determine the reduction coefficient of the pile group bearing capacity under each pile spacing according to the dynamic load test record of the response data;

[0040] The integrated design module is used to select the confident pile spacing of the pile foundation in the port heap loading environment from all the pile spacings using various reduction factors, and to perform integrated design on the pile foundation layout in the port heap loading environment through the confident pile spacing.

[0041] The technical solution provided by the embodiments disclosed in this application has the following beneficial effects:

[0042] Static and dynamic load tests of pile foundations are carried out in a large-area loading environment of a port, and response data of the pile foundation in the port loading environment is obtained; finite element analysis is performed on the basic performance of the pile foundation based on the static load test records of the response data, and the ultimate bearing capacity of a single pile of the pile foundation in the port loading environment is obtained; the port loading environment is divided into a plurality of pile foundation integration areas according to the ultimate bearing capacity of the single pile and the regional characteristics of the port loading environment, and the load distribution characteristics of each pile foundation integration area are determined; the spacings between a plurality of piles in the port loading environment are determined according to the ultimate bearing capacity of the single pile and each load distribution characteristic, and the reduction coefficient of the pile group bearing capacity at each pile spacing is determined according to the dynamic load test records of the response data; the confidence pile spacing of the pile foundation in the port loading environment is screened out from all the pile spacings using the various reduction coefficients, and the pile foundation layout in the port loading environment is integratedly designed according to the confidence pile spacing.

[0043] It can be seen that in this application, firstly, the load distribution in the port loading environment has spatial heterogeneity, and the load concentration, distribution pattern and change rate in different areas are quite different, which directly affects the stress state of the pile foundation. By determining the load distribution characteristics of each pile foundation integration area, the vertical distribution of the load, the extension range of the horizontal load and the settlement characteristics in the area can be revealed in detail, so as to determine the type and size of the load that the pile foundation should be subjected to, which is helpful for the refined design of the pile foundation layout, avoiding the "blind" design in the traditional method, and realizing the optimization of the pile foundation spacing, so as to improve the force uniformity of the pile foundation, prevent the local pile foundation from being overloaded or wasting the bearing capacity, and thus significantly improve the overall bearing capacity of the pile foundation system. force and stability; then, the reduction factor reflects the influence of the pile group effect on the bearing capacity of the pile foundation. With the increase of the pile spacing, the reduction factor decreases. Through the calculation and analysis of the reduction factor, the selection of the pile foundation spacing can be further optimized to avoid the excessive pile group effect affecting the bearing capacity due to too small pile spacing, or the waste of foundation bearing capacity due to too large pile spacing. The precise determination of the reduction factor can provide a more reasonable pile spacing selection, and by screening out the confident pile spacing, the optimal design of the pile foundation layout can be achieved, thereby ensuring that the pile foundation in the large-area loading environment of the port can maximize the bearing capacity while meeting the safety and stability, reduce unnecessary resource waste, and reduce construction costs.

[0044] In summary, the technical solution adopted in this application can realize the integrated design of pile foundation spacing under large-area loading environment in the port, thereby improving the bearing capacity of pile foundation under large-area loading environment in the port. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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, the drawings described below are only the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0046] Figure 1 It is a flow chart of the pile foundation optimization design method for a large-area port loading environment provided by the present application;

[0047] Figure 2 is an exemplary flow chart for determining the load distribution characteristics of each pile foundation integration area provided in the present application;

[0048] Figure 3 It is a module structure diagram of a pile foundation optimization design system for a large-area port loading environment provided in accordance with the present application. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] The embodiment of the present application provides a pile foundation optimization design method and system for a large-area port loading environment, the core of which is to perform static and dynamic load tests on pile foundations in a large-area port loading environment, and then obtain response data of the pile foundation in the port loading environment; perform finite element analysis on the basic performance of the pile foundation based on the static load test record of the response data, and obtain the single pile ultimate bearing capacity of the pile foundation in the port loading environment; divide the port loading environment into multiple pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, and then determine the load distribution characteristics of each pile foundation integration area; determine multiple pile spacings in the port loading environment according to the single pile ultimate bearing capacity and each load distribution characteristic, and then determine the reduction coefficient of the pile group bearing capacity at each pile spacing according to the dynamic load test record of the response data; use each reduction coefficient to screen out the confident pile spacing of the pile foundation in the port loading environment from all pile spacings, and perform integrated design of the pile foundation layout in the port loading environment according to the confident pile spacing. The above scheme can realize the integrated design of pile foundation spacing under the large-area loading environment of the port, thereby improving the bearing capacity of the pile foundation under the large-area loading environment of the port.

[0051] Embodiment 1: In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Figure 1 As shown in FIG. 1 , this figure is an exemplary flow chart of a pile foundation optimization design method for a large-area loading environment in a port according to this embodiment of the present application. The design method includes the following steps:

[0052] In step S1, static and dynamic load tests of pile foundations are performed in a large-area loading environment of a port, thereby obtaining response data of the pile foundations in the loading environment of the port.

[0053] It should be noted that, in the present application, the response data represents the response record of the pile foundation test in a large-area loading environment of the port, and the response data includes static load test records and dynamic load test records, wherein the static load test records contain vertical load and horizontal load, and the dynamic load test records contain the interaction force between the pile body and the soil body at different pile spacings.

[0054] In specific implementation, a static load test with step-by-step loading is used to carry out a static load test on the pile foundation in a large-area loading environment at the port, and the record of the static load test on the pile foundation can be used as a static load test record. A dynamic load test with pulse vibration load is used to carry out a dynamic load test on the pile foundation in a large-area loading environment at the port, and the record of the dynamic load test on the pile foundation can be used as a dynamic load test record. Thus, the collection of the static load test record and the dynamic load test record can be used as the response data of the pile foundation in the port loading environment.

[0055] In step S2, a finite element analysis is performed on the pile foundation performance based on the static load test record of the response data to obtain the ultimate bearing capacity of a single pile of the pile foundation in a port loading environment.

[0056] In this embodiment, the finite element analysis of the pile foundation performance is performed based on the static load test record of the response data, and the single pile ultimate bearing capacity of the pile foundation in the port loading environment can be obtained by the following steps:

[0057] The simulation model of pile, soil and contact interface in port loading environment is constructed by three-dimensional finite element method;

[0058] Setting load constraints between soil and piles in the simulation model based on the static load test record of the response data;

[0059] The performance of the pile foundation is analyzed by setting a simulation model with load constraints, and the ultimate bearing capacity of a single pile in the port loading environment is obtained.

[0060] It should be noted that, in this application, the ultimate bearing capacity of a single pile refers to the maximum axial load that a single pile foundation can withstand under the limit state; the load constraint refers to the load boundary conditions imposed on the pile foundation and its surrounding soil in finite element analysis or engineering design.

[0061] In the specific implementation, firstly, based on the geological exploration data and measured parameters, a suitable constitutive model is selected to describe the soil (for example, the Mohr-Coulomb model), and the elastoplastic parameters of the pile are defined according to the pile foundation material characteristics. The Coulomb friction model and the Penalty stiffness model are used to determine the contact conditions of the pile-soil contact interface to simulate the action mechanism of the pile side friction resistance and the pile end bearing capacity, thereby constructing a simulation model of the pile, soil and contact interface in the port loading environment; then, the mean of all vertical loads in the static load test record of the response data is used as the vertical load constraint, and the mean of all horizontal loads in the static load test record of the response data is used as the horizontal load constraint, so as to complete the setting of the load constraint between the soil and the pile in the simulation model; finally, the simulation model after setting the load constraint can be used to analyze the performance of the pile foundation, so that the maximum bearing capacity of the pile foundation in the analysis result can be used as the single pile ultimate bearing capacity of the pile foundation in the port loading environment.

[0062] In step S3, the port loading environment is divided into a plurality of pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, and then the load distribution characteristics of each pile foundation integration area are determined.

[0063] In this embodiment, the following steps can be used to divide the port loading environment into multiple pile foundation integration areas according to the ultimate bearing capacity of the single pile and the regional characteristics of the port loading environment:

[0064] Acquire multiple pile foundation sub-areas in the port loading environment;

[0065] Extract the load characteristic value of each pile foundation sub-area from the regional characteristics of the port loading environment;

[0066] Clustering all load eigenvalues ​​into a plurality of load clusters according to the ultimate bearing capacity of the single pile;

[0067] The port loading environment is divided into multiple pile foundation integration areas according to each load cluster.

[0068] In the specific implementation, first, multiple pile foundation sub-areas in the port loading environment can be obtained from the park energy consumption intelligent distribution system of the port loading environment; then, the load characteristic values ​​of each pile foundation sub-area are obtained from the regional characteristics of the port loading environment; then, the K-means clustering algorithm can be used to cluster all the load characteristic values ​​to form multiple clusters with similar load characteristics, and each cluster is used as a load clustering cluster to obtain multiple load clustering clusters; finally, for each load clustering cluster, the set of pile foundation sub-areas corresponding to all load characteristic values ​​in the load clustering cluster can be used as the pile foundation integration area corresponding to the load clustering cluster in the port loading environment. The pile foundation integration area corresponding to each load clustering cluster in the port loading environment can be obtained in the above manner, and multiple pile foundation integration areas can be obtained.

[0069] It should be noted that in the present application, the pile foundation integrated area is a pile foundation arrangement unit used to optimize the pile foundation design and improve the bearing stability; the pile foundation sub-area is the basic arrangement unit of the pile foundation in the port loading environment; the regional characteristics of the port loading environment are comprehensive characteristics used to guide the pile foundation design and zoning optimization, and the load characteristic values ​​of each pile foundation sub-area can be extracted from the foundation bearing capacity, load action mode and soil settlement characteristics of each pile foundation sub-area from the park energy consumption intelligent allocation system, so as to use the collection of all load characteristic values ​​as the regional characteristics of the port loading environment, wherein the load characteristic value represents the quantitative parameter of the load action mode in the pile foundation sub-area, and the load characteristic value includes the vertical load distribution, the horizontal load influence range and the settlement gradient; the load clustering cluster represents the pile foundation sub-area with similar load characteristic values.

[0070] Preferably, in this embodiment, reference Figure 2 As shown in FIG. 1 , this figure is an exemplary flow chart for determining the load distribution characteristics of each pile foundation integration area in an embodiment of the present application. In this embodiment, the load distribution characteristics of each pile foundation integration area can be determined by the following steps:

[0071] First, in step S31, for each pile foundation integrated area, the load characteristic value of each pile foundation sub-area in the pile foundation integrated area is obtained;

[0072] Then, in step S32, the load distribution characteristics of the pile foundation integration area are determined according to all the load characteristic values, and then the load distribution characteristics of each pile foundation integration area are obtained.

[0073] It should be noted that, in the present application, the load distribution characteristics represent the distribution law of the load in the port loading environment within the spatial range; in the specific implementation, first, for each pile foundation integration area, the load characteristic value of each pile foundation sub-area in the pile foundation integration area is obtained; then, all the load characteristic values ​​can be arranged according to the position in the pile foundation integration area as the load distribution characteristics of the pile foundation integration area, and the load distribution characteristics of each pile foundation integration area can be obtained in the above manner.

[0074] In step S4, multiple pile spacings under the port loading environment are determined according to the ultimate bearing capacity of the single pile and various load distribution characteristics, and then the reduction coefficients of the pile group bearing capacity at various pile spacings are determined according to the dynamic load test records of the response data.

[0075] In this embodiment, the following steps can be used to determine the spacing between multiple piles under the port heap loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics:

[0076] For each pile foundation integration area in the port loading environment, the interaction value between the pile body and the soil in the pile foundation integration area is determined by the load distribution characteristics of the pile foundation integration area;

[0077] Determine the limit spacing of pile foundations in the pile foundation integration area according to the interaction value and the single pile limit bearing capacity, and then determine the limit spacing of pile foundations in each pile foundation integration area;

[0078] Multiple pile spacings under port loading conditions are determined based on all limit spacings.

[0079] It should be noted that, in this application, the pile spacing refers to the horizontal distance between the center lines of adjacent pile foundations; the interaction value indicates the degree of influence between pile foundations due to load transfer and soil deformation; the limit spacing refers to the maximum feasible distance between piles while ensuring that the bearing capacity is not significantly reduced.

[0080] In the specific implementation, first, for each pile foundation integration area in the port loading environment, the absolute value of the difference between the load characteristic values ​​in adjacent pile foundation sub-areas in the load distribution characteristics can be used as the interaction force of the adjacent pile foundation sub-areas, so that the set of all interaction forces can be used as the interaction value between the pile body and the soil in the pile foundation integration area; then, an elastic layer model based on the pile group effect is initialized, and the interaction value is used as the action relationship between the pile body and the soil in the pile foundation integration area, and the single pile ultimate bearing capacity is used as the target bearing capacity in the elastic layer model. The elastic layer model is used to perform a limit evaluation on the distance between the pile foundations in the pile foundation integration area, and the result of the limit evaluation can be used as the limit spacing of the pile foundations in the pile foundation integration area. The limit spacing of the pile foundations in each pile foundation integration area can be obtained by the above method; finally, all the limit spacings can be removed and used as multiple pile spacings in the port loading environment.

[0081] In this embodiment, the reduction factor of the pile group bearing capacity at each pile spacing is determined based on the dynamic load test record of the response data and can be implemented by the following steps:

[0082] For each pile spacing, the interaction under the pile spacing is extracted from the dynamic load test record of the response data;

[0083] Based on the pile group effect, stress superposition is performed on the interaction to obtain the reduction factor of the pile group bearing capacity under the pile spacing, and then the reduction factor of the pile group bearing capacity under each pile spacing is obtained.

[0084] In the specific implementation, first, for each pile spacing, the interaction force corresponding to the pile spacing in the dynamic load test record of the response data can be used as the interaction force of the dynamic load test under the pile spacing, so that the set of all interaction forces can be used as the interactivity under the pile spacing; then, the Boussinesq solution (based on the pile group effect) for calculating all the interaction forces in the interactivity can be used to realize stress superposition, so that the ratio of the result of stress superposition to the standard stress in the park energy consumption intelligent distribution system of the port loading environment is used as the reduction coefficient of the bearing capacity of the pile group under the pile spacing. The reduction coefficient of the bearing capacity of the pile group under each pile spacing can be obtained in the above way.

[0085] It should be noted that, in the present application, the reduction factor represents the reduction ratio of the bearing capacity of a pile group relative to the sum of the bearing capacity of all single piles; the interactivity represents the mechanical coupling between the pile foundation and the surrounding soil and adjacent piles; the pile group effect refers to the decrease in the bearing capacity of a single pile due to the mutual influence between piles, which mainly includes the increase of negative friction, the stress release effect of the soil on the side of the pile, and the coordinated change of the settlement of the pile group.

[0086] In step S5, each reduction factor is used to screen out a confident pile spacing of the pile foundation in the port heap loading environment from all the pile spacings, and the pile foundation layout in the port heap loading environment is integratedly designed based on the confident pile spacing.

[0087] In this embodiment, the following steps can be used to select the confident pile spacing of the pile foundation in the port loading environment from all the pile spacings using various reduction factors:

[0088] Obtain the reduction threshold of the pile spacing in the port loading environment;

[0089] The pile spacing corresponding to the reduction factor higher than the reduction threshold is taken as the confident pile spacing of the pile foundation in the port loading environment.

[0090] It should be noted that in the present application, the confident pile spacing is the pile spacing that ensures the bearing stability of the pile foundation and the economy of construction; in specific implementation, first, the reduction threshold of the pile spacing in the port loading environment can be obtained from the park energy consumption intelligent allocation system of the port loading environment. The reduction threshold represents the critical value of the reduction coefficient of the pile group bearing capacity, which is used to determine whether the influence of the pile spacing on the pile group effect is acceptable; then, the pile spacing corresponding to the reduction coefficient higher than the reduction threshold is used as the confident pile spacing of the pile foundation in the port loading environment. If there are multiple values ​​of the confident pile spacing, the average of all values ​​of the confident pile spacing can be used as the confident pile spacing of the pile foundation in the port loading environment.

[0091] In this embodiment, the integrated design of the pile foundation layout in the port loading environment through the confidence pile spacing can be achieved in the following manner, that is: the confidence pile spacing can be used as the design spacing of the pile foundation in the port loading environment to complete the integrated design of the pile foundation layout in the port loading environment.

[0092] It can be seen that in this application, firstly, the load distribution in the port loading environment has spatial heterogeneity, and the load concentration, distribution pattern and change rate in different areas are quite different, which directly affects the stress state of the pile foundation. By determining the load distribution characteristics of each pile foundation integration area, the vertical distribution of the load, the extension range of the horizontal load and the settlement characteristics in the area can be revealed in detail, so as to determine the type and size of the load that the pile foundation should be subjected to, which is helpful for the refined design of the pile foundation layout, avoiding the "blind" design in the traditional method, and realizing the optimization of the pile foundation spacing, so as to improve the force uniformity of the pile foundation, prevent the local pile foundation from being overloaded or wasting the bearing capacity, and thus significantly improve the overall bearing capacity of the pile foundation system. force and stability; then, the reduction factor reflects the influence of the pile group effect on the bearing capacity of the pile foundation. With the increase of the pile spacing, the reduction factor decreases. Through the calculation and analysis of the reduction factor, the selection of the pile foundation spacing can be further optimized to avoid the excessive pile group effect affecting the bearing capacity due to too small pile spacing, or the waste of foundation bearing capacity due to too large pile spacing. The precise determination of the reduction factor can provide a more reasonable pile spacing selection, and by screening out the confident pile spacing, the optimal design of the pile foundation layout can be achieved, thereby ensuring that the pile foundation in the large-area loading environment of the port can maximize the bearing capacity while meeting the safety and stability, reduce unnecessary resource waste, and reduce construction costs.

[0093] In summary, the technical solution adopted in this application can realize the integrated design of pile foundation spacing under large-area loading environment in the port, thereby improving the bearing capacity of pile foundation under large-area loading environment in the port.

[0094] Embodiment 2: This application provides a pile foundation optimization design system for a large-area loading environment in a port, referring to Figure 3 As shown, this figure is a schematic diagram of a design system according to this embodiment of the present application, and the design system includes:

[0095] The test module 100 is used to perform static and dynamic load tests on pile foundations in a large-area loading environment of a port, thereby obtaining response data of the pile foundations in the loading environment of the port;

[0096] A finite element analysis module 200 is used to perform a finite element analysis on the pile foundation performance based on the static load test record of the response data to obtain the ultimate bearing capacity of a single pile of the pile foundation in a port loading environment;

[0097] A division module 300 is used to divide the port loading environment into a plurality of pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, and then determine the load distribution characteristics of each pile foundation integration area;

[0098] A reduction determination module 400 is used to determine the spacing between multiple piles under the port loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics, and then determine the reduction coefficient of the pile group bearing capacity under each pile spacing according to the dynamic load test record of the response data;

[0099] The integrated design module 500 is used to select the confident pile spacing of the pile foundation in the port loading environment from all the pile spacings using various reduction factors, and to perform integrated design on the pile foundation layout in the port loading environment through the confident pile spacing.

[0100] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0101] A person skilled in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, the storage medium including a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically-erasable programmable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0102] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

Claims

1. A pile foundation optimization design method for a large-area port loading environment, characterized in that: The design method comprises the following steps: Conduct static and dynamic load tests on pile foundations in a large-area port loading environment, and obtain the response data of pile foundations in the port loading environment; Based on the static load test records of the response data, a finite element analysis is performed on the pile foundation performance to obtain the ultimate bearing capacity of a single pile of the pile foundation in the port loading environment; Dividing the port loading environment into a plurality of pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, and then determining the load distribution characteristics of each pile foundation integration area; Determine the spacing between multiple piles under the port loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics, and then determine the reduction factor of the pile group bearing capacity under each pile spacing according to the dynamic load test record of the response data; The confidence pile spacing of the pile foundation in the port heap loading environment is screened out from all the pile spacings using various reduction factors, and the pile foundation layout in the port heap loading environment is integratedly designed using the confidence pile spacing.

2. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: Static load test with step-by-step loading is used to carry out static load test on pile foundation in large-area heap loading environment of the port.

3. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: Dynamic load test using pulse vibration load is carried out on pile foundation in large-area loading environment of port.

4. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: Based on the static load test records of the response data, the finite element analysis of the pile foundation performance is carried out to obtain the ultimate bearing capacity of a single pile in the port loading environment, which specifically includes: The simulation model of pile, soil and contact interface in port loading environment is constructed by three-dimensional finite element method; Setting load constraints between soil and piles in the simulation model based on the static load test record of the response data; The performance of the pile foundation is analyzed by setting a simulation model with load constraints, and the ultimate bearing capacity of a single pile in the port loading environment is obtained.

5. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: The port loading environment is divided into multiple pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, including: Acquire multiple pile foundation sub-areas in the port loading environment; Extract the load characteristic value of each pile foundation sub-area from the regional characteristics of the port loading environment; Clustering all load eigenvalues ​​into a plurality of load clusters according to the ultimate bearing capacity of the single pile; The port loading environment is divided into multiple pile foundation integration areas according to each load cluster.

6. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: Determine the load distribution characteristics of each pile foundation integration area specifically include: For each pile foundation integration area, obtain the load characteristic value of each pile foundation sub-area in the pile foundation integration area; The load distribution characteristics of the pile foundation integration area are determined according to all load characteristic values, and then the load distribution characteristics of each pile foundation integration area are obtained.

7. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: Determining the spacing between multiple piles under the port loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics specifically includes: For each pile foundation integration area in the port loading environment, the interaction value between the pile body and the soil in the pile foundation integration area is determined by the load distribution characteristics of the pile foundation integration area; Determine the limit spacing of pile foundations in the pile foundation integration area according to the interaction value and the single pile limit bearing capacity, and then determine the limit spacing of pile foundations in each pile foundation integration area; Multiple pile spacings under port loading conditions are determined based on all limit spacings.

8. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: The reduction factor of the pile group bearing capacity at each pile spacing is determined based on the dynamic load test record of the response data and specifically includes: For each pile spacing, the interaction under the pile spacing is extracted from the dynamic load test record of the response data; Based on the pile group effect, stress superposition is performed on the interaction to obtain the reduction factor of the pile group bearing capacity under the pile spacing, and then the reduction factor of the pile group bearing capacity under each pile spacing is obtained.

9. The pile foundation optimization design method for a large-area port loading environment according to claim 1 is characterized in that: Using various reduction factors, the confident pile spacing of pile foundations in the port loading environment is selected from all pile spacings, including: Obtain the reduction threshold of the pile spacing in the port loading environment; The pile spacing corresponding to the reduction factor higher than the reduction threshold is taken as the confident pile spacing of the pile foundation in the port loading environment.

10. A pile foundation optimization design system for a large-area port loading environment, used to execute a pile foundation optimization design method for a large-area port loading environment as claimed in any one of claims 1 to 9, characterized in that: The design system includes: The test module is used to perform static and dynamic load tests on pile foundations in a large-area port loading environment, and then obtain the response data of the pile foundation in the port loading environment; A finite element analysis module, used to perform finite element analysis on pile foundation performance based on the static load test record of the response data, and obtain the ultimate bearing capacity of a single pile of the pile foundation in a port loading environment; A division module, used to divide the port loading environment into a plurality of pile foundation integration areas according to the single pile ultimate bearing capacity and the regional characteristics of the port loading environment, and then determine the load distribution characteristics of each pile foundation integration area; A reduction determination module is used to determine the spacing between multiple piles under the port loading environment according to the ultimate bearing capacity of the single pile and various load distribution characteristics, and then determine the reduction coefficient of the pile group bearing capacity under each pile spacing according to the dynamic load test record of the response data; The integrated design module is used to select the confident pile spacing of the pile foundation in the port heap loading environment from all the pile spacings using various reduction factors, and to perform integrated design on the pile foundation layout in the port heap loading environment through the confident pile spacing.

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