25 results about "Cone penetration test" patented technology

The invention provides a method and system for estimating the vertical bearing capacity of a steel pipe pile, and relates to the technical field of pile foundation engineering.The method comprises the steps that a static cone penetration test is conducted on a seabed stratum needing to be arranged for a steel pipe pile foundation, experimental data are obtained and subjected to normalization processing, soil behavior types are divided, and soil layer mechanical parameters are inverted; calculating side friction resistance and end resistance of the steel pipe pile based on the soil layer mechanical parameters to obtain initial static ultimate bearing capacity; historical equivalent cyclic load experimental data of waves in the construction sea area are obtained, an equivalent cyclic load reduction coefficient, a liquefaction reduction coefficient and a time-varying corrosion reduction coefficient are constructed, and a comprehensive time-varying reduction coefficient is constructed; the initial static ultimate bearing capacity is corrected based on the comprehensive time-varying reduction coefficient, the vertical bearing capacity of the steel pipe pile in the long-term service period is predicted, and the time-varying ultimate bearing capacity is obtained; setting an evaluation threshold according to the time-varying ultimate bearing capacity, dynamically adjusting a bearing capacity grading threshold interval, and outputting a bearing capacity grading evaluation result.

The invention relates to a calculation method for determining frictional resistance of a backfill layer of a test well. The method comprises the following steps: determining parameters of the test well; in-situ static sounding testing is carried out on the backfill layers of the test well, and the specific penetration resistance Ps values of different backfill layers are obtained; statistical analysis is conducted on the specific penetration resistance Ps value of the backfill layer, and the conforming distribution type is determined; calculating an expected value of the distribution function, and taking the expected value as a mean value of the specific penetration resistance Ps value of each backfill layer; and calculating the frictional resistance corresponding to each backfill layer by using the mean value of the specific penetration resistance Ps values of each backfill layer. Compared with the prior art, the friction resistance of the backfill layer can be effectively calculated, and a scientific basis and data support are provided for evaluating whether the test well has a removable condition or not.

This invention discloses a biomimetic-based autonomous static cone penetration test system, comprising a controller, an upper expansion device, a loading device, a lower telescoping device, and a static cone penetration probe. The upper expansion device includes an elastic membrane surrounding a hollow cylindrical tube with permeable holes. The loading device includes four sets of hydraulic loading units. The lower telescoping device includes six radially expandable and retractable metal blades. Water is injected into the elastic membrane to cause it to expand and compress the surrounding soil, providing the reaction force required for the extension of the loading device. By controlling the four sets of hydraulic loading units in the loading device, the probe can penetrate the soil vertically and change its direction of travel. When the metal blades unfold, the bearing capacity of the soil above them provides the reaction force required for the retraction of the loading device. This invention eliminates the need for a reaction device on the ground surface and a probe rod between the loading device and the static cone penetration probe. This invention causes minimal disturbance to the surrounding environment and can be used in locations inaccessible to large machinery, expanding the applicability of static cone penetration test sites.

This invention discloses a three-dimensional stratigraphic modeling method for borehole strategy optimization, comprising the following steps: integrating discrete standard penetration test data, continuous static cone penetration test data, predicted unsampled location data, and existing stratigraphic data into multi-confidence geological exploration data; generating virtual boreholes with stratigraphic rationality using the GA-Stacking machine learning algorithm based on the multi-confidence geological exploration data; performing stratigraphic attribute modeling and interface reconstruction using the radial basis function implicit modeling method based on the original exploration data and virtual borehole data; and conducting uncertainty assessment and borehole layout optimization based on the constructed stratigraphic model. This invention addresses the impact of the sparsity of the original exploration data and the randomness of the modeling process on the accuracy of stratigraphic modeling by proposing an ensemble learning implicit stratigraphic modeling method based on multi-source sparse geological exploration data, providing an effective approach for refined stratigraphic modeling and a scientific basis for geological exploration borehole layout.

This invention provides a static cone penetration test (CPPT) system and method for measuring the thickness of carnallite ore layers based on an unmanned surface vessel (USV) with variable buoyancy anchoring. The system includes an USV body, a penetration unit, a main control unit, a data acquisition unit, a multi-parameter formation identification unit, and a fluid counterweight anchoring unit. When the USV body is not performing detection operations, the fluid counterweight anchoring unit increases the weight of the hull. As the static cone penetration probe penetrates the formation, it collects the end resistance at the probe tip and the frictional force on the probe sidewall sleeve, transmitting these data to the multi-parameter formation identification unit. The identification unit identifies the upper and lower interfaces of the carnallite ore layer. The control unit calculates the carnallite ore thickness based on the depth difference between the static cone penetration probes at the upper and lower interfaces of the carnallite ore layer. This invention improves measurement accuracy, resolves the contradiction between miniaturization and large reaction forces, does not damage the original crystallization environment of the salt lake, and enhances the safety of unmanned operations.

The application provides a seabed sediment strength testing device and a testing method. The deep-sea seabed sediment strength testing device comprises a cone tip assembly, a pressure-resistant cabin, a driving device and a controller. The driving device is used for driving the driving rod to retract or extend the cylindrical part. When the testing device penetrates to a specified depth under the action of its own gravity, the driving rod drives the cone tip assembly to uniformly penetrate to the specified depth under the control of the driving device, that is, a static cone penetration test is added after a free-fall cone penetration test. The free-fall dynamic cone penetration test and the static cone penetration test are completed in sequence by using the same device in one penetration process. The correction parameter is determined by the relationship between the static cone tip resistance and the dynamic cone tip resistance. The dynamic cone tip resistance is corrected by the correction parameter to obtain the corrected dynamic cone tip resistance. The seabed sediment strength is determined by the corrected dynamic cone tip resistance, so that the efficiency and accuracy of the deep-sea seabed sediment strength testing are greatly improved.

To save the labor of measuring work by eliminating the replacement of equipment.SOLUTION: In this testing device 1 for confirming the soil improvement effect, a measuring probe 3 is installed on the tip of a penetration rod 2. In the measurement probe 3, a tip cone 4 used for a dynamic cone penetration test is provided at a tip, an electrode portion 5 including an electrode 6 used for electric logging on an outer peripheral surface is provided above the tip cone 4, an outer diameter of the electrode portion 5 is formed to be smaller than an outer diameter of the tip cone 4, an axial center of the tip cone 4 and an axial center of the electrode portion 5 are eccentric, and the electrode 6 is disposed on the outer peripheral surface on an eccentric side. Since the axial centers of the tip cone 4 and the electrode part 5 are made eccentric and the electrode 6 is arranged on the outer peripheral surface on the eccentric side, the electrode 6 is surely brought into contact with the hole wall surface in the penetration process of the measuring probe 3, and electric logging can be performed.SELECTED DRAWING: Figure 1

The invention belongs to the field of geotechnical engineering reconnaissance, and provides a soil layer classification correction method and system based on static penetration test and numerical simulation, and the technical scheme is as follows: the internal relation among conical tip resistance, side friction resistance and a soil layer is revealed by deeply analyzing actual measurement data of the static penetration test, and the soil layer classification correction method and system based on static penetration test and numerical simulation are obtained by establishing a large amount of numerical simulation. Different conical tip resistances, side friction resistances and soil layer data information are obtained, and correction is carried out on the basis of the different conical tip resistances, side friction resistances and soil layer data information. According to the method, actual measurement data resources of the existing static sounding test can be effectively integrated and utilized and are combined with data obtained through numerical simulation, and the data volume is increased on the basis of original data. Huge data volume is analyzed and calculated in combination with artificial intelligence big data, and finally accurate correction of soil layer classification is achieved.

This invention belongs to the field of marine geotechnical engineering technology and relates to an active learning optimization method for in-situ cone penetration test layout based on seismic reflection data. First, based on a physically driven deep learning model, using modules such as wavelet inversion, reflection coefficient inversion, and acoustic attenuation compensation, cone tip resistance is gradually predicted from seismic reflection data, achieving high-fidelity extrapolation from sparse one-dimensional in-situ test data to continuous multi-dimensional profiles. Second, the average seismic reflection amplitude is used to quantitatively evaluate stratigraphic complexity, prioritizing the deployment of initial test points at locations with high complexity. In the sequential sampling stage, a two-stage candidate point selection strategy is proposed: an early inter-layer reflection amplitude strategy is used to quickly discover hidden strata, and a prediction uncertainty strategy is used in the later stage to minimize global error. A joint termination criterion combining the moving average convergence criterion and the continuous no-improvement criterion is introduced, stopping sampling when the marginal information gain decreases, avoiding the cost waste or insufficient accuracy caused by empiricism.

This invention belongs to the field of geotechnical engineering and discloses a microgravity static cone penetration test system and its usage method. Addressing the requirements of microgravity drop tower experiments, this invention designs a fully positioned static cone penetration test system and its usage method based on the principle of static cone penetration testing. The invention mainly consists of a CPT probe, a penetration system, a positioning system, a signal acquisition system, and a vibration damping system. It can realize functions such as positioning of various points within the model trench, constant-speed downward and upward probe insertion and withdrawal, and structural vibration damping. This invention fully meets the requirements of microgravity drop tower experiments, providing continuous, rapid, efficient, and multifunctional testing. The measurement results can accurately reflect the mechanical properties of the tested material. The testing system has a stable structure, high repeatability, and greatly reduces experimental losses, thereby lowering costs. This invention can serve as an auxiliary experimental device for microgravity drop tower experiments, providing accurate and reliable basic physical and mechanical parameters, and has promising prospects in mechanical applications.

This invention provides a pressure-rotation cone penetration test (PPT) device and method for determining soil and rock parameters. The PPT device includes a housing, a torsional power unit, a static loading device, a pressure-rotation cone penetrometer, a displacement sensor, and a torque sensor, all installed within the housing. The torsional power unit drives the pressure-rotation cone penetrometer to rotate, while the static loading device applies downward pressure to the device. Under the combined action of both, the device rotates downwards into the soil and rock mass. The displacement sensor collects the downward displacement of the device, and the torque sensor measures the torque force exerted on the device as it rotates downwards into the soil and rock mass. The displacement and torque sensors transmit the collected data to a control computer via wired or wireless means. After receiving the penetration data from the sensors, the control computer calls the relationship model between the penetration data and soil parameters, substitutes the penetration data into the model, generates a test report, and displays it on a monitor in real time.

The invention provides a method suitable for rapidly measuring the bearing capacity of a shallow silty clay natural foundation, which comprises the following steps: S1, establishing a load-settlement displacement curve based on a plate load test (PLT); s2, considering the safety margin, and determining a permissible value of the bearing capacity of the foundation by adopting a double tangent method; s3, based on a light cone dynamic penetration test (DCPT), a regression analysis method is adopted to establish the relation between the cumulative penetration times and the cumulative penetration depth; s4, a dynamic penetration index (DCPI) is introduced, and a relational expression between the dynamic penetration index and the permissible value of the foundation bearing capacity is established; and S5, according to a light cone dynamic penetration test, rapidly measuring the bearing capacity of the foundation by utilizing the relational expression. Compared with a traditional in-situ test method, the problems that the site is limited, the test range and space are insufficient and the like can be effectively solved, meanwhile, the method is simple, convenient and efficient, the test working efficiency is greatly improved, the cost input is reduced, and a new technical means is provided for better and faster determination of the foundation bearing capacity.

The invention discloses a triaxial test loading device and method with a CPT function, the device comprises a triaxial test loading machine and a static sounding test probe, the triaxial test loading machine comprises a sample chamber and an axial pressurization rod, and the axial pressurization rod is movably inserted in the sample chamber; the static sounding test probe is arranged at the front end of the axial pressurizing rod; wherein the sample chamber is used for storing a hydrate rock core sample; the axial pressurizing rod is used for applying a load to the hydrate core sample; the static sounding test probe is used for being inserted into the hydrate rock core sample along with the axial pressurizing rod and simultaneously performing in-situ testing on static sounding parameters of the hydrate rock core sample. According to the invention, the static cone penetration test probe and the triaxial test loading machine are combined together, the static cone penetration test is carried out on a hydrate rock core sample through the static cone penetration test probe, and the static cone penetration test can be completed while the triaxial test is realized through one-time ballasting.

Disclosed in the present invention is a pile foundation bearing parameter calculation method based on cone penetration technology, the method comprising: S1, performing a cone penetration test at a pile position, so as to acquire raw cone penetration data; S2, on the basis of a cone tip resistance, calculating a soil unit weight, an internal frictional angle and an overburden stress; S3, on the basis of a pile foundation size, calculating a pile foundation side frictional resistance; S4, calculating a pile end resistance at the pile bottom of a pile foundation; and S5, calculating pile foundation bearing parameters. In the method, the correlation between a penetration resistance of cone penetration and a unit side frictional resistance and a unit end resistance in pile foundation bearing parameters is established, and the correlation between cone penetration data and an ultimate bearing capacity of a pile foundation is reflected in a relatively direct manner. An ultimate side frictional resistance and an ultimate end resistance that can be exerted by the pile foundation can be directly calculated by using the cone penetration data, thereby making up for the deficiency of conventional methods excessively relying on empirical formulas. The method is simple, feasible, time-saving and efficient.

This invention discloses a marine combined casing static cone penetration testing (PCT) device, comprising: a base with pre-drilled holes, an outer frame, a lifting power structure, and an upper clamping power structure; further comprising: an upper slewing power structure disposed above the outer frame, an upper clamping power structure disposed within the outer frame, and a lower slewing power structure; the upper and lower slewing power structures each include: a clamping device for clamping the casing or probe rod, and a power device for driving the casing or probe rod to rotate; wherein the clamping holes for clamping the casing or probe rod on the upper, lower, and upper clamping power structures are coaxially arranged with the pre-drilled holes. This invention is an equipment and drilling device for shallow seabed static cone penetration testing on small-tonnage construction vessels, and can meet the operational requirements for static cone penetration exploration on seabeds containing sandstone layers.

This invention discloses an intelligent stratification system and method for static cone penetration test curves based on a visual large-scale model, belonging to the field of intelligent processing and analysis technology for geotechnical engineering investigation data. The system includes a static cone penetration test data acquisition and standardization preprocessing module, which acquires multi-dimensional static cone penetration test data such as depth, cone tip resistance, and sidewall friction resistance, performs preprocessing, and generates standardized static cone penetration test curve images; a visual large-scale model module, which constructs a visual large-scale model to analyze the static cone penetration test curve images, identifies key points, and outputs soil layer numbers, soil properties, layer depths, and reasons for layering; a mathematical analysis module, which obtains layer depths based on a change point detection algorithm and constructs a soil property naming rule library, outputting layer and soil property naming results; and a fusion and output module, which performs comprehensive decision-making and naming arbitration, outputting layer results and soil property names. This invention achieves intelligent fusion of multi-source data, automation of layer identification, and structured result output, providing a new direction for the identification and classification of soil layers in static cone penetration tests.

This invention discloses a foldable, automatically driven, and retrieved static cone penetrometer rod and its usage method. The rod includes a penetrometer probe that passes through a folding correction device and a drive wheel assembly from top to bottom. A folding extension rod is connected to the tail end of the probe extending beyond the correction device. The extension rod comprises several rods connected to adjacent rods via connectors, forming a fold at the connectors. The correction device includes an electric slide rail with two sets of electrically telescopic rods slidably connected to it, located on either side of the probe. This invention achieves automatic driving and retrieval of the static cone penetrometer rod, avoiding the problem of manual rod replacement disrupting the continuity of the penetration test; it enables detachable, integrated transport of the extension rod and the probe, avoiding excessively long extension rods; and it simplifies the extension process by connecting the extension rods with a hinged connector and a strong magnet.

1. The name of the design product: cone penetration tester. 2. The use of the design product: for cone penetration test. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention relates to the technical field of composite foundation bearing capacity, and discloses a multilayer composite foundation bearing capacity detection device and a detection method thereof.The device comprises a sensor array module, a data processing module, a bearing capacity analysis module, a calibration output module, a communication module and a user interface module; foundation static parameters are collected through a static sounding sensor, foundation dynamic parameters are collected through a dynamic sounding sensor, foundation deformation parameters are collected through a fiber bragg grating sensor, integrated collection of multi-source static and dynamic parameter data is achieved, noise filtering is carried out through a wavelet transform algorithm, data filling is carried out through a K-nearest neighbor interpolation algorithm, and multi-source static and dynamic parameter data are obtained. Standardized foundation parameter data are generated, and consistency and accuracy of data preprocessing are guaranteed; and performing foundation sublevel division processing on the standardized foundation parameter data through a K-means clustering algorithm to realize intelligent identification and hierarchical division of the soil layer.

This invention belongs to the technical field of geotechnical engineering and earthquake engineering, and provides a method based on CPT and V s The joint testing method for liquefaction assessment, which considers the geological age effect, can quantitatively characterize the geological age effect of soil, combine the advantages of CPT and Vs tests, and does not require precise soil age information. The technical solution adopted includes the following steps: S1, in-situ test data acquisition, including static cone penetration test and shear wave velocity test; S2, parameter normalization processing, calculating normalized cone tip resistance and normalized shear wave velocity, and then introducing the soil classification index to obtain the normalized cone tip resistance of equivalent pure sand; S3, establishing the correlation between benchmark static cone penetration test and shear wave velocity; S4, determining the geological age aging factor of soil; S5, constructing a comprehensive evaluation index considering geological age; S6, establishing a liquefaction assessment model; S7, determining the liquefaction discrimination probability threshold; S8, evaluating the site liquefaction potential.

A method of processing a sleeve friction value obtained via a Cone Penetration Test, CPT using a cone penetrometer is disclosed. The method is performed by a processor and comprises a step of processing the sleeve friction value considering variation of geometry of the cone penetrometer, ground stress, and water pressure. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and liveable world.

This invention belongs to the technical field of geotechnical engineering and earthquake engineering, and provides a site seismic delineation method based on the correlation between static cone penetration test (CPT) and shear wave velocity, fully combining CPT and V s The advantages of the two testing methods are that by introducing characteristic parameters reflecting the degree of soil aging, a more reasonable classification of seismic sites can be achieved, thereby improving the scientific nature of site classification and the reliability of seismic design. The method includes the following steps: S1, in-situ test data acquisition, including static cone penetration test and shear wave velocity test; S2, parameter normalization processing, calculating normalized cone tip resistance and normalized shear wave velocity, and then introducing soil classification index to obtain the normalized cone tip resistance of equivalent pure sand; S3, establishing the correlation between benchmark static cone penetration test and shear wave velocity; S4, determining the soil geological age aging factor; S5, constructing a comprehensive site seismic classification index; S6, site seismic category classification; S7, engineering application and result output.

The invention relates to static cone penetration test equipment and method, and belongs to the technical field of geological survey, the static cone penetration test equipment comprises a rack, a probe rod, a probe, a cable and measuring equipment, the probe is arranged at the tail end of the probe rod, the measuring equipment is arranged in the probe, the cable passes through the inside of the probe rod and is electrically connected with the measuring equipment, the probe is arranged in the rack, and the measuring equipment is electrically connected with the cable. A hydraulic cylinder used for driving the probe rod to move is arranged on the rack; the feeler lever is rotationally arranged in the rack, the feeler lever takes the axis direction as a rotating axis, and the feeler lever further comprises a first driving part for driving the feeler lever to rotate; a flaring strip is arranged on the probe rod, and the length direction of the flaring strip is parallel to the length direction of the probe rod. The device has the effect of improving the recovery safety of the probe rod.

This application relates to an automatic testing method and system for cone dynamic penetration testing. The testing method includes obtaining a specified depth value G0; obtaining the number of hammer blows and the cumulative penetration depth value G of the probe after the i-th hammer blow. i The cumulative penetration depth value G will be calculated. i Matching with the specified depth value G0; based on the cumulative penetration depth value G i The matching results with the specified depth value G0 are output as exploration record information; the exploration record information includes the number of hammer blows for each penetration to the specified depth value G0. During the implementation of the cone dynamic penetration test, the number of hammer blows and the cumulative penetration depth G of the probe after the i-th blow are automatically recorded. i This helps ensure the accuracy of the original data, and in turn, based on accurate original data, it helps to obtain accurate survey results.

This invention discloses a static cone penetration test apparatus for simultaneously sampling and determining the sensitivity of soft clay. It mainly includes a static cone penetration probe, a probe rod with a locking mechanism, a sampler, and a vane test device housed inside a large-diameter short probe rod. When the static cone penetration reaches a certain depth, the probe rod with the locking mechanism moves upwards along with the upper probe rod, while the sampler remains stationary under the friction of the surrounding soil. A spring lock secures the two components. When the upper probe rod penetrates downwards again, the sampler is simultaneously pressed into the soil to complete the undisturbed soil sampling. The retractable vane probe rod in the large-diameter short probe rod extends the vane head horizontally to measure the peak value and residual undrained shear strength of the soft clay, thereby determining the sensitivity. This invention utilizes the penetration device of a static cone penetration test, eliminating the need for a drilling rig, penetration device, and mud wall support, to obtain undisturbed soil samples and determine the undrained shear strength and sensitivity of soft clay at a certain depth.