Underwater load plate in-situ test method

Abstract

The invention discloses an underwater load plate in-situ test method, which relates to the technical field of geological investigation and comprises the following steps: selecting an underwater test point and recording the water depth, water quality and foundation surface state of the underwater test point; performing foundation surface cleaning and leveling treatment on the underwater test points to obtain a stable in-situ foundation surface, and arranging an underwater load plate in-situ test module to execute dynamic self-leveling treatment of multi-point multi-dimensional settlement response difference to form a uniform contact state; and interface water film active displacement and force transmission stability establishment processing is executed based on the uniform contact state, an effective force transmission interface state is formed, graded loading is executed, settlement data corresponding to each stage of loading is recorded, and a load settlement response data sequence is formed. According to the invention, a complete and continuous test data chain is formed, so that the bearing capacity and deformation characteristics of the foundation can be systematically identified and evaluated, and reliable test and result output of the underwater foundation engineering performance are realized.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and in particular to an in-situ testing method for underwater load plates. Background Technology

[0002] With the development of marine engineering and underwater infrastructure construction, the demand for in-situ testing of underwater foundation bearing capacity and deformation characteristics is constantly increasing. The underwater load plate in-situ testing method is an important testing technique developed based on terrestrial load plate tests. It typically involves selecting underwater test sites, cleaning the foundation surface, placing load plates, and applying graded loading to obtain the relationship between load and settlement, thereby analyzing the foundation's bearing capacity and deformation characteristics. Existing technologies have enabled testing operations in underwater environments to a certain extent, and a relatively mature testing procedure has been established.

[0003] In practical applications, existing in-situ underwater load plate testing methods typically assume that the load plate and the foundation surface can directly form effective contact. However, due to factors such as water films, floating mud layers, and surface unevenness in the underwater environment, the contact state and force transmission conditions between the load plate and the foundation may be unstable, thus affecting the authenticity of settlement data and the accuracy of test results. Therefore, the control of contact uniformity and interface force transmission stability in the initial stage of testing still needs further improvement in existing technologies. Summary of the Invention

[0004] In view of the aforementioned existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides an in-situ testing method for underwater load plates, which solves the problem that uneven contact between the underwater load plate and the foundation and unstable force transmission at the interface affect the accuracy of the test results.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides an in-situ testing method for an underwater load plate, which includes selecting an underwater test point and recording the water depth, water quality and foundation surface condition of the underwater test point.

[0008] The foundation surface of the underwater test points was cleaned and leveled to obtain a stable in-situ foundation surface. An in-situ test module for underwater load plates was set up to perform dynamic self-leveling treatment of multi-point and multi-dimensional settlement response differences, forming a uniform contact state.

[0009] Based on the uniform contact state, the active displacement of the interfacial water film and the establishment of force transmission stability are performed to form an effective force transmission interface state. Graded loading is performed and the settlement data corresponding to each loading level is recorded to form a load settlement response data sequence.

[0010] The load settlement response data sequence is used to determine the termination of loading and stop loading when the termination condition is met, forming a termination loading state. Then, the staged unloading is performed and the rebound data is recorded to form unloading rebound response data.

[0011] Data processing and analysis are performed based on unloading rebound response data to generate analysis results on foundation bearing capacity and deformation characteristics, and to generate an in-situ test report and output test results for underwater water-loaded plates.

[0012] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the underwater test points include:

[0013] The location range of the underwater test points is collected and located to obtain the underwater test points. The water depth of the underwater test points is measured to obtain the water depth. The water quality is obtained by testing the underwater test points and the water depth.

[0014] The surface condition of the foundation is obtained by observing the underwater test points, water depth and water quality.

[0015] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the underwater load plate in-situ testing module includes:

[0016] Based on underwater test points, impurities on the foundation surface are identified to obtain the distribution of impurities on the foundation surface. The foundation surface at the underwater test points is then cleaned to obtain the cleaned foundation surface.

[0017] Based on the cleaned foundation surface, the underwater test points were leveled to obtain the leveled foundation surface. The surface stability of the underwater test points was then tested to obtain a stable in-situ foundation surface.

[0018] Based on the stable in-situ foundation surface, underwater load plate in-situ test modules are deployed at underwater test points.

[0019] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the formation of a uniform contact state includes:

[0020] The underwater load plate in-situ testing module applies preload to the load plate and collects settlement response data at multiple locations to form multi-point settlement response data.

[0021] The settlement response difference between different locations is calculated based on multi-point settlement response data to obtain multi-point multidimensional settlement response difference;

[0022] The expression for the difference in settlement response at multiple points and in multiple dimensions is:

[0023] ;

[0024] in, For the first The first settlement observation location and the first Each settlement observation location at time The settlement response is poor. For the first Each settlement observation location at time Settlement response data, For the first Each settlement observation location at time Settlement response data, The location is designated as the settlement observation location. In order to be with the first Another settlement observation location, different from the previous one. For a specific moment;

[0025] The contact state between the load plate and the stable in-situ foundation surface is determined by multi-point and multi-dimensional settlement response difference, and the contact state determination result is obtained. The attitude or force of the load plate is adjusted to obtain the adjusted settlement response data.

[0026] Based on the adjusted settlement response data, the multi-point multi-dimensional settlement response difference is recalculated and the contact state determination and dynamic self-correction process are repeated until the multi-point multi-dimensional settlement response difference meets the preset consistency condition and a uniform contact state is formed.

[0027] No. After dynamic self-leveling treatment, the expression for the difference in settlement response at multiple points and in multiple dimensions is as follows:

[0028] ;

[0029] in, for, For the first After dynamic self-balancing processing, the first Each settlement observation location at time The adjusted settlement response data, For the first After dynamic self-balancing processing, the first Each settlement observation location at time The adjusted settlement response data, This is the round number for the dynamic self-leveling process.

[0030] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the effective force transmission interface state includes:

[0031] A preset constant preload is applied to the load plate based on the uniform contact state to obtain the preload action state. The distribution of the interface water film between the load plate and the stable in-situ foundation surface is identified to obtain the interface water film distribution state.

[0032] Actively remove the interfacial water film under preload conditions to obtain the state of the interfacial water film after removal. Continuously monitor the settlement change of the loaded plate to obtain the settlement change trend.

[0033] The force transmission stability between the load plate and the stable in-situ foundation surface is determined based on the settlement change trend, and the force transmission stability state is obtained.

[0034] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the load settlement response data sequence includes,

[0035] Based on the effective force transmission interface state, the graded loading level is set to obtain the graded loading level. The load is applied to the load plate step by step to obtain the loading state of each level.

[0036] Settlement data for each loading level is obtained by observing the settlement at the corresponding location of the load plate under each loading level. The data is then sorted according to the loading level to obtain a load settlement response data sequence.

[0037] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the termination loading state includes:

[0038] Based on the load settlement response data sequence, the settlement data corresponding to each loading level is extracted sequentially according to the order of graded loading. By comparing the settlement change amplitude and direction between adjacent loading levels, the change law of settlement with the increase of loading is reflected, and the settlement change trend is obtained.

[0039] Based on the comparative analysis of the settlement change trend and the preset termination conditions, the termination condition determination results are obtained.

[0040] Based on the termination condition determination result, loading is stopped when the termination condition is met, and the current loading status is confirmed to obtain the termination loading status.

[0041] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the unloading rebound response data includes,

[0042] Based on the termination loading state, the graded unloading level is determined and output. The load is reduced step by step according to the preset order to obtain the load value corresponding to each unloading level.

[0043] Settlement rebound observations are conducted at each unloading stage based on the load values ​​corresponding to each unloading level. The rebound data corresponding to each unloading level is obtained and sorted in order according to the unloading level to obtain unloading rebound response data, thus forming unloading rebound response data.

[0044] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the analysis results of the foundation bearing capacity and deformation characteristics include:

[0045] Based on the unloading rebound response data, the rebound data corresponding to each level of unloading is classified and organized to obtain the organized unloading rebound response data. The rebound change pattern corresponding to each level of unloading is analyzed to obtain the rebound change characteristics.

[0046] Based on the rebound variation characteristics and the load settlement response data sequence, the overall deformation behavior of the foundation is comprehensively analyzed to obtain the deformation characteristic analysis results.

[0047] The bearing capacity of the foundation is determined based on the deformation characteristic analysis results and the load settlement response data sequence, and the foundation bearing capacity and deformation characteristic analysis results are obtained.

[0048] As a preferred embodiment of the underwater load plate in-situ testing method of the present invention, the test results include:

[0049] Based on the analysis results of the foundation bearing capacity and deformation characteristics, the analysis contents of each item are summarized and organized to obtain the summary and organized results. The test process information, analysis contents and results are arranged to obtain the underwater water-carrying plate in-situ test report.

[0050] Based on the in-situ test report of the underwater water-carrying plate, the target conclusions were extracted and the test results were obtained.

[0051] In a second aspect, the present invention provides a computer device including a memory and a processor, wherein the memory stores a computer program, wherein when the computer program is executed by the processor, it implements any step of the underwater load plate in-situ testing method as described in the first aspect of the present invention.

[0052] Thirdly, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, it implements any step of the underwater load plate in-situ testing method as described in the first aspect of the present invention.

[0053] The beneficial effects of this invention are as follows: By introducing dynamic self-calibration processing based on multi-point, multi-dimensional settlement response differences during in-situ testing of underwater load plates, the accurate determination and continuous correction of the contact state between the load plate and the stable in-situ foundation surface are achieved. This transforms the initial contact from traditional empirical judgment to a quantitative control process based on settlement response differences, eliminating the interference of eccentric contact and local suspension on the test results and improving the authenticity and reliability of the test data. By performing active expulsion of the interface water film and establishing force transmission stability based on the uniform contact state, the influence of the interface water film between the load plate and the foundation is effectively eliminated, and the force transmission path is stably constructed. This allows the foundation stress during loading to more directly reflect its intrinsic mechanical properties, avoids the interference of interface reconstruction factors on the settlement response, and improves the effectiveness of the load settlement response data sequence and the accuracy of the analysis results. Combined with graded loading, termination judgment, and unloading rebound analysis, a complete and continuous test data chain is formed, enabling the foundation bearing capacity and deformation characteristics to be systematically identified and evaluated, and achieving reliable testing and result output for the performance of underwater foundation engineering. Attached Figure Description

[0054] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a flowchart of the in-situ testing method for underwater load plates. Detailed Implementation

[0056] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0057] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0058] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0059] Reference Figure 1As one embodiment of the present invention, this embodiment provides an in-situ testing method for an underwater load plate, comprising the following steps:

[0060] S1. Select underwater test points and record the water depth, water quality, and foundation surface condition of the underwater test points.

[0061] S1.1. Collect the location range of the underwater test points and locate them to obtain the underwater test points. Measure the water depth at the underwater test points to obtain the water depth. Perform water quality testing on the underwater test points and water depth to obtain the water quality.

[0062] Furthermore, the work area is delineated within the target water area using measuring equipment to define the location range of underwater test points. Within this range, the underwater test points are located point by point to determine their positions. Then, a depth sounder is used at each test point to measure the vertical distance and obtain the water depth. After obtaining the water depth, samples are taken at the test points, and water quality analysis is performed to determine the water quality, thus completing the process of obtaining the underwater test points, water depth, and water quality.

[0063] S1.2. Based on underwater test points, water depth and water quality, observe the surface condition of the foundation to obtain the surface condition of the foundation.

[0064] Furthermore, based on the obtained underwater test locations, water depth, and water quality, the foundation surface at the underwater test locations is observed using underwater observation equipment to identify whether there is floating mud covering, particle accumulation, or unevenness on the foundation surface. The observation results are then combined with the water depth and water quality to make a comprehensive judgment, thereby obtaining the foundation surface condition.

[0065] S2. Clean and level the foundation surface at the underwater test points to obtain a stable in-situ foundation surface, and set up an underwater load plate in-situ test module to perform dynamic self-leveling treatment of multi-point and multi-dimensional settlement response difference to form a uniform contact state.

[0066] S2.1. Based on the underwater test points, identify impurities on the foundation surface to obtain the distribution of impurities on the foundation surface, and clean the foundation surface at the underwater test points to obtain the cleaned foundation surface.

[0067] Furthermore, a comprehensive scan of the foundation surface was conducted at the underwater test site using underwater observation methods to identify floating mud, gravel, loose particles, and other attached materials on the foundation surface, thereby determining the distribution of impurities on the foundation surface. After clarifying the distribution of impurities on the foundation surface, cleaning tools were used to gradually remove the impurities within the range of the underwater test site, peeling off and removing the floating mud layer and loose impurities, exposing the relatively dense original structure of the foundation surface, thus obtaining the cleaned foundation surface.

[0068] S2.2. Based on the cleaned foundation surface, the underwater test points are leveled to obtain the leveled foundation surface, and the surface stability of the underwater test points is tested to obtain a stable in-situ foundation surface.

[0069] Furthermore, after obtaining the cleaned foundation surface, the foundation surface at the underwater test point is leveled. This is achieved by scraping off raised areas and filling or compacting low-lying areas to make the foundation surface more uniform and flat. After the leveling process is completed, the stability of the foundation surface at the underwater test point is tested. By continuously observing the morphological changes of the leveled foundation surface in a static state, it is determined whether there is any significant disturbance or re-settlement, thus confirming that the foundation surface is in a stable state and obtaining a stable in-situ foundation surface.

[0070] S2.3. Based on the stable in-situ foundation surface at the underwater test point, deploy underwater load plate in-situ test modules.

[0071] Furthermore, after obtaining the stable in-situ foundation surface, the load plate is placed on the stable in-situ foundation surface at the underwater test point, and the position of the load plate is adjusted to achieve initial contact between the load plate and the stable in-situ foundation surface. At the same time, a loading device is set up above the load plate and connected to the reaction structure, and a settlement observation device is set up at the corresponding position of the load plate, thereby completing the setup of the underwater load plate in-situ test module.

[0072] S2.4. Based on the underwater load plate in-situ test module, preload is applied to the load plate and settlement response data at multiple locations are collected to form multi-point settlement response data.

[0073] Furthermore, after the underwater load plate in-situ test module is deployed, a preload is applied to the load plate through a loading device to make the load plate make initial force contact with the stable in-situ foundation surface. At the same time, multiple settlement observation positions are preset on the load plate to continuously obtain the settlement changes at different positions under the preload action, and the settlement response corresponding to each settlement observation position is recorded and organized to form multi-point settlement response data.

[0074] S2.5. Calculate the settlement response difference between different locations based on multi-point settlement response data to obtain multi-point multidimensional settlement response difference.

[0075] Furthermore, after obtaining the settlement response data at multiple points, the settlement observation locations are paired according to their numbers. The difference between the settlement response data of each pair of settlement observation locations at the same time is calculated to reflect the settlement differences between different locations. The settlement response differences corresponding to all combinations are then summarized and organized to obtain the multi-point multidimensional settlement response difference.

[0076] The expression for the difference in settlement response at multiple points and in multiple dimensions is:

[0077] ;

[0078] in, For the first The first settlement observation location and the first Each settlement observation location at time The settlement response is poor. For the first Each settlement observation location at time Settlement response data, For the first Each settlement observation location at time Settlement response data, The location is designated as the settlement observation location. In order to be with the first Another settlement observation location, different from the previous one. For a moment.

[0079] S2.6. The contact state between the load plate and the stable in-situ foundation surface is determined by the multi-point multi-dimensional settlement response difference. The contact state determination result is obtained, and the attitude or force of the load plate is adjusted to obtain the adjusted settlement response data.

[0080] Furthermore, after obtaining the multi-point multi-dimensional settlement response difference, the magnitude and distribution characteristics of the multi-point multi-dimensional settlement response difference are analyzed to determine whether there is skewed contact or insufficient local contact between the load plate and the stable in-situ foundation surface, and a contact state judgment result is formed accordingly. When the contact state judgment result indicates uneven contact, the attitude or force of the load plate is adjusted to make the load plate re-contact with the stable in-situ foundation surface, and new settlement response data is acquired simultaneously during the adjustment process, thereby obtaining the adjusted settlement response data.

[0081] S2.7. Based on the adjusted settlement response data, recalculate the multi-point multi-dimensional settlement response difference and repeat the contact state judgment and dynamic self-leveling process until the multi-point multi-dimensional settlement response difference meets the preset consistency condition and forms a uniform contact state.

[0082] Furthermore, after obtaining the adjusted settlement response data, the settlement observation locations are again paired according to their numbers, and the multi-point multidimensional settlement response difference is calculated. At the same time, the contact state determination and dynamic self-calibration process are repeated. Through multiple rounds of adjustment, the settlement difference between different settlement observation locations is gradually reduced. When the multi-point multidimensional settlement response difference tends to be consistent among the combinations and meets the preset consistency conditions, the dynamic self-calibration process is stopped, thereby forming a uniform contact state.

[0083] No. After dynamic self-leveling treatment, the expression for the difference in settlement response at multiple points and in multiple dimensions is as follows:

[0084] ;

[0085] in, for, For the first After dynamic self-balancing processing, the first Each settlement observation location at time The adjusted settlement response data, For the first After dynamic self-balancing processing, the first Each settlement observation location at time The adjusted settlement response data, This is the round number for the dynamic self-leveling process.

[0086] S3. Based on the uniform contact state, perform active displacement of the interface water film and establish the stability of force transmission to form an effective force transmission interface state. Perform graded loading and record the settlement data corresponding to each loading level to form a load settlement response data sequence.

[0087] S3.1. Apply a preset constant preload to the load plate based on the uniform contact state to obtain the preload action state. Identify the distribution of the interface water film between the load plate and the stable in-situ foundation surface to obtain the interface water film distribution state.

[0088] Furthermore, after a uniform contact state is formed, a preset constant preload is applied to the load plate through a loading device, so that the load plate continuously acts on the surface of the stable in-situ foundation, thereby entering the preload action state. Under the preload action state, the contact interface between the load plate and the surface of the stable in-situ foundation is observed through underwater observation methods to identify whether there is a continuous water film, local stagnant water, or uneven distribution at the interface, and the distribution state of the water film at the interface is determined based on the interface morphology changes and the contact area state.

[0089] S3.2. Actively remove the interfacial water film under preload conditions to obtain the state of the interfacial water film after removal. Continuously monitor the settlement changes of the load plate to obtain the settlement trend.

[0090] Furthermore, under the preload condition, by keeping the load plate continuously pressed and stabilizing the in-situ foundation surface, the water film at the interface is gradually discharged or redistributed to the surrounding area under pressure, thereby achieving active drainage treatment of the interface water film. During the drainage process of the interface water film, the settlement change of the load plate is continuously observed. By recording the settlement change in different time periods, the evolution process of the interface state is reflected, thereby obtaining the settlement change trend and forming the state after the drainage of the interface water film.

[0091] S3.3. Based on the settlement change trend, the force transmission stability between the load plate and the stable in-situ foundation surface is determined to obtain the force transmission stability state.

[0092] Furthermore, after obtaining the settlement trend, by analyzing the characteristics of settlement change over time, it is determined whether the settlement gradually tends to stabilize and whether the change amplitude decreases. In this way, the force transmission state between the load plate and the stable in-situ foundation surface is evaluated. When the settlement change tends to be gentle and without obvious fluctuations, it is determined that the force transmission path between the load plate and the stable in-situ foundation surface has tended to be stable, thus obtaining the force transmission stability state.

[0093] S3.4. Based on the effective force transmission interface state, set the graded loading level to obtain the graded loading level, apply the load to the load plate step by step, and obtain the loading state of each level.

[0094] Furthermore, after the effective force transmission interface state is formed, the loading process is divided into grades and graded loading levels are set according to the stable force conditions established between the load plate and the stable in-situ foundation surface. Then, the load plate is applied to the load plate in sequence according to the graded loading levels, so that the load plate is gradually stressed at different loading stages. After each loading level is completed, the current loading level is maintained to form the corresponding force state, thereby obtaining the loading states at each level.

[0095] S3.5. Settlement observation is carried out on the corresponding positions of the load plate based on the loading state at each level to obtain the settlement data corresponding to each loading level. The data is then sorted in order according to the loading level to obtain the load settlement response data sequence.

[0096] Furthermore, after obtaining the loading states at each level, settlement observations are conducted at the corresponding locations of the load plates under each loading state. The settlement changes at each settlement observation location are recorded at different loading stages. The settlement data corresponding to each loading level are arranged and organized in order according to the loading level, so that each loading level and the corresponding settlement data form a correspondence, thereby obtaining the load settlement response data sequence.

[0097] S4. Based on the load settlement response data sequence, determine the termination of loading and stop loading when the termination condition is met, forming a termination loading state. Perform graded unloading and record the rebound data to form unloading rebound response data.

[0098] S4.1 Based on the load settlement response data sequence, the settlement data corresponding to each loading level is extracted sequentially according to the order of graded loading. By comparing the settlement change amplitude and direction between adjacent loading levels, the change law of settlement with the increase of loading is reflected, and the settlement change trend is obtained.

[0099] Furthermore, after obtaining the load settlement response data sequence, the settlement data corresponding to each loading level is extracted sequentially according to the order of graded loading. The settlement change amplitude and direction between adjacent loading levels are compared and analyzed. By observing the change characteristics of settlement as the loading increases, it is possible to identify whether the settlement shows an accelerating, decelerating or stabilizing change pattern, thereby obtaining the settlement change trend.

[0100] S4.2. Based on the settlement change trend and the preset termination conditions, a comparative analysis is conducted to obtain the termination condition determination result.

[0101] Furthermore, after obtaining the settlement change trend, the settlement change trend is compared and analyzed item by item with the preset termination conditions. By judging whether the settlement change reaches the characteristic state corresponding to the preset termination conditions, it is determined whether the current loading process needs to be terminated, thereby obtaining the termination condition determination result.

[0102] S4.3. Based on the termination condition determination result, stop loading when the termination condition is met, obtain the stop loading result, confirm the current loading status, and obtain the terminated loading status.

[0103] Furthermore, after obtaining the termination condition determination result, when the termination condition determination result indicates that the termination condition is met, the load on the load plate is immediately stopped, and the current loading stage is confirmed so that the load and settlement relationship corresponding to the current loading stage is fixed, thereby obtaining the termination loading state.

[0104] S4.4 Determine and output the graded unloading level based on the termination loading state, and reduce the load level step by step according to the preset order to obtain the load value corresponding to each unloading level.

[0105] Furthermore, after obtaining the termination loading state, the unloading process is divided into levels according to the loading level in the termination loading state, and the level unloading level is determined. Then, the load is reduced in sequence according to the level unloading level, so that the load plate releases the load level by level, thereby obtaining the load value corresponding to each level of unloading.

[0106] S4.5. Settlement rebound observation is carried out at each unloading stage based on the load value corresponding to each unloading level to obtain the rebound data corresponding to each unloading level. The data is then sorted in order according to the unloading level to obtain the unloading rebound response data, thus forming the unloading rebound response data.

[0107] Furthermore, after obtaining the load values ​​corresponding to each unloading level, settlement rebound observation is carried out at the corresponding position of the load plate at each unloading stage. The rebound changes of the foundation are recorded during the gradual reduction of load. The rebound data corresponding to each unloading level are sorted in order according to the unloading level, so that the rebound data corresponds to the unloading process, thereby obtaining unloading rebound response data and forming unloading rebound response data.

[0108] S5. Based on the unloading rebound response data, perform data processing and analysis to generate analysis results on the foundation bearing capacity and deformation characteristics, and generate an in-situ test report and output test results for the underwater water-carrying plate.

[0109] S5.1 Based on the unloading rebound response data, the rebound data corresponding to each level of unloading is classified and organized to obtain the organized unloading rebound response data. The rebound change pattern corresponding to each level of unloading is analyzed to obtain the rebound change characteristics.

[0110] Furthermore, after obtaining the unloading rebound response data, the rebound data corresponding to each unloading level is classified and organized according to the graded unloading level, so that the rebound data of different unloading stages form an orderly correspondence. The magnitude and pattern of rebound changes during each unloading process are compared and analyzed. By identifying the characteristics of rebound changes during the unloading process, the recovery ability of the foundation during the unloading process is reflected, thereby obtaining the rebound change characteristics.

[0111] S5.2. Based on the rebound change characteristics and the load settlement response data sequence, a comprehensive analysis of the overall deformation behavior of the foundation is conducted to obtain the deformation characteristic analysis results.

[0112] Furthermore, after obtaining the rebound change characteristics, the rebound change characteristics are correlated with the load settlement response data sequence. By comprehensively comparing and analyzing the settlement change during the loading stage and the rebound change during the unloading stage, the overall deformation behavior characteristics of the foundation during the stress and unloading process are identified, thereby obtaining the deformation characteristic analysis results.

[0113] S5.3. Based on the deformation characteristic analysis results and the load settlement response data sequence, the bearing capacity of the foundation is determined, and the bearing capacity and deformation characteristic analysis results of the foundation are obtained.

[0114] Furthermore, after obtaining the deformation characteristic analysis results, the deformation characteristic analysis results are jointly analyzed with the load settlement response data sequence. By judging the relationship between the settlement response and deformation characteristics of the foundation at different loading stages, the bearing capacity of the foundation is determined, thereby obtaining the foundation bearing capacity and deformation characteristic analysis results.

[0115] S5.4. Based on the analysis results of the foundation bearing capacity and deformation characteristics, summarize and organize the various analysis contents to obtain the summary and organization results. Arrange the test process information, analysis contents and results to obtain the underwater water-carrying plate in-situ test report.

[0116] Furthermore, after obtaining the analysis results of the foundation bearing capacity and deformation characteristics, the analysis results are classified and organized, and then integrated with the load settlement response data sequence, unloading rebound response data and related process information generated during the test process. This makes all kinds of analysis content form a unified and related structure. On this basis, the test process information, analysis content and results are arranged and organized according to the test process sequence, so that the content structure is clear and logically coherent, thus obtaining the underwater water-load plate in-situ test report.

[0117] S5.5 Extract the target conclusions based on the in-situ test report of the underwater water-carrying plate and obtain the test results.

[0118] Furthermore, after obtaining the in-situ test report of the underwater water-carrying plate, the various analytical conclusions in the in-situ test report are screened and summarized, and important conclusions that can reflect the bearing capacity and deformation characteristics of the foundation are extracted. The extracted results are then organized so that the key conclusions are presented in a centralized form, thereby obtaining the test results.

[0119] This embodiment also provides a computer device applicable to the in-situ testing method of underwater load plates, including: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the in-situ testing method of underwater load plates as proposed in the above embodiment.

[0120] The computer device can be a terminal, comprising a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0121] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements the in-situ testing method for underwater load plates as proposed in the above embodiments. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0122] In summary, this invention, by introducing dynamic self-calibration processing based on multi-point, multi-dimensional settlement response differences during in-situ underwater load plate testing, achieves accurate determination and continuous correction of the contact state between the load plate and the stable in-situ foundation surface. This transforms the initial contact from traditional empirical judgment to a quantitative control process based on settlement response differences, eliminating interference from eccentric contact and local suspension on test results, and improving the authenticity and reliability of test data. By performing active expulsion of the interface water film and establishing force transmission stability based on a uniform contact state, the influence of the interface water film between the load plate and the foundation is effectively eliminated, and the force transmission path is stably constructed. This allows the foundation stress during loading to more directly reflect its intrinsic mechanical properties, avoiding interference from interface reconstruction factors on the settlement response, improving the effectiveness of the load settlement response data sequence and the accuracy of the analysis results. Combined with graded loading, termination determination, and unloading rebound analysis, a complete and continuous test data chain is formed, enabling the systematic identification and evaluation of the foundation's bearing capacity and deformation characteristics, achieving reliable testing and result output for underwater foundation engineering performance.

[0123] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for in-situ testing of an underwater load plate, characterized in that: This includes selecting underwater test sites and recording the water depth, water quality, and foundation surface condition at the test sites; The foundation surface of the underwater test points was cleaned and leveled to obtain a stable in-situ foundation surface. An in-situ test module for underwater load plates was set up to perform dynamic self-leveling treatment of multi-point and multi-dimensional settlement response differences, forming a uniform contact state. Based on the uniform contact state, the active displacement of the interfacial water film and the establishment of force transmission stability are performed to form an effective force transmission interface state. Graded loading is performed and the settlement data corresponding to each loading level is recorded to form a load settlement response data sequence. The load settlement response data sequence is used to determine the termination of loading and stop loading when the termination condition is met, forming a termination loading state. Then, the staged unloading is performed and the rebound data is recorded to form unloading rebound response data. Data processing and analysis are performed based on unloading rebound response data to generate analysis results on foundation bearing capacity and deformation characteristics, and to generate an in-situ test report and output test results for underwater water-loaded plates.

2. The in-situ testing method for underwater load plates as described in claim 1, characterized in that: The recorded underwater test locations include, The location range of the underwater test points is collected and located to obtain the underwater test points. The water depth of the underwater test points is measured to obtain the water depth. The water quality is obtained by testing the underwater test points and the water depth. The surface condition of the foundation is obtained by observing the underwater test points, water depth and water quality.

3. The in-situ testing method for underwater load plates as described in claim 2, characterized in that: The underwater load plate in-situ testing module includes... Based on underwater test points, impurities on the foundation surface are identified to obtain the distribution of impurities on the foundation surface. The foundation surface at the underwater test points is then cleaned to obtain the cleaned foundation surface. Based on the cleaned foundation surface, the underwater test points were leveled to obtain the leveled foundation surface. The surface stability of the underwater test points was then tested to obtain a stable in-situ foundation surface. Based on the stable in-situ foundation surface, underwater load plate in-situ test modules are deployed at underwater test points.

4. The in-situ testing method for underwater load plates as described in claim 3, characterized in that: The formation of a uniform contact state includes, The underwater load plate in-situ testing module applies preload to the load plate and collects settlement response data at multiple locations to form multi-point settlement response data. The settlement response difference between different locations is calculated based on multi-point settlement response data to obtain multi-point multidimensional settlement response difference; The expression for the difference in settlement response at multiple points and in multiple dimensions is: ； in, For the first The first settlement observation location and the first Each settlement observation location at time The settlement response is poor. For the first Each settlement observation location at time Settlement response data, For the first Each settlement observation location at time Settlement response data, The location is designated as the settlement observation location. In order to be with the first Another settlement observation location, different from the previous one. For a specific moment; The contact state between the load plate and the stable in-situ foundation surface is determined by multi-point and multi-dimensional settlement response difference, and the contact state determination result is obtained. The attitude or force of the load plate is adjusted to obtain the adjusted settlement response data. Based on the adjusted settlement response data, the multi-point multi-dimensional settlement response difference is recalculated and the contact state determination and dynamic self-calibration process are repeated until the multi-point multi-dimensional settlement response difference meets the preset consistency condition and a uniform contact state is formed. No. After dynamic self-leveling treatment, the expression for the difference in settlement response at multiple points and in multiple dimensions is as follows: ； in, for, For the first After dynamic self-balancing processing, the first Each settlement observation location at time The adjusted settlement response data, For the first After dynamic self-balancing processing, the first Each settlement observation location at time The adjusted settlement response data, This is the round number for the dynamic self-balancing process.

5. The in-situ testing method for underwater load plates as described in claim 4, characterized in that: The effective force transmission interface state includes, A preset constant preload is applied to the load plate based on the uniform contact state to obtain the preload action state. The distribution of the interface water film between the load plate and the stable in-situ foundation surface is identified to obtain the interface water film distribution state. Actively remove the interfacial water film under preload conditions to obtain the state of the interfacial water film after removal. Continuously monitor the settlement change of the loaded plate to obtain the settlement change trend. The force transmission stability between the load plate and the stable in-situ foundation surface is determined based on the settlement change trend, and the force transmission stability state is obtained.

6. The in-situ testing method for underwater load plates as described in claim 5, characterized in that: The load-settlement response data sequence includes: Based on the effective force transmission interface state, the graded loading level is set to obtain the graded loading level. The load is applied to the load plate step by step to obtain the loading state of each level. Settlement data for each loading level is obtained by observing the settlement at the corresponding location of the load plate under each loading level. The data is then sorted according to the loading level to obtain a load settlement response data sequence.

7. The in-situ testing method for underwater load plates as described in claim 6, characterized in that: The terminated loading state includes, Based on the load settlement response data sequence, the settlement data corresponding to each loading level is extracted sequentially according to the order of graded loading. By comparing the settlement change amplitude and direction between adjacent loading levels, the change law of settlement with the increase of loading is reflected, and the settlement change trend is obtained. Based on the comparative analysis of the settlement change trend and the preset termination conditions, the termination condition determination results are obtained. Based on the termination condition determination result, loading is stopped when the termination condition is met, and the current loading status is confirmed to obtain the termination loading status.

8. The in-situ testing method for underwater load plates as described in claim 7, characterized in that, The unloading rebound response data includes, Based on the termination loading state, the graded unloading level is determined and output. The load is reduced step by step according to the preset order to obtain the load value corresponding to each unloading level. Settlement rebound observations are conducted at each unloading stage based on the load values ​​corresponding to each unloading level. The rebound data corresponding to each unloading level is obtained and sorted in order according to the unloading level to obtain unloading rebound response data, thus forming unloading rebound response data.

9. The in-situ testing method for underwater load plates as described in claim 8, characterized in that: The analysis results of the foundation bearing capacity and deformation characteristics include: Based on the unloading rebound response data, the rebound data corresponding to each level of unloading is classified and organized to obtain the organized unloading rebound response data. The rebound change pattern corresponding to each level of unloading is analyzed to obtain the rebound change characteristics. Based on the rebound variation characteristics and the load settlement response data sequence, the overall deformation behavior of the foundation is comprehensively analyzed to obtain the deformation characteristic analysis results. The bearing capacity of the foundation is determined based on the deformation characteristic analysis results and the load settlement response data sequence, and the foundation bearing capacity and deformation characteristic analysis results are obtained.

10. The in-situ testing method for underwater load plates as described in claim 9, characterized in that, The test results include, Based on the analysis results of the foundation bearing capacity and deformation characteristics, the analysis contents of each item are summarized and organized to obtain the summary and organized results. The test process information, analysis contents and results are arranged to obtain the underwater water-carrying plate in-situ test report. Based on the in-situ test report of the underwater water-carrying plate, the target conclusions were extracted and the test results were obtained.

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