17 results about "Soil model" patented technology

The application discloses a kind of based on transparent soil and pile-soil interface micro evolution measurement method of multi-source sensing, it is related to geotechnical engineering test field.The present application includes the following steps: constructing transparent soil model, pile body pre-embedded sensor arrangement, multi-source sensor calibration and parameter optimization, load application and multi-source data acquisition, improved DIC algorithm's pile-soil interface micro displacement calculation, pile-soil interface pore and particle density calculation, multi-source sensing data's heterogeneous fusion, pile-soil interface micro evolution characteristic quantitative inversion and visualization, test end and data verification.The present application simulates real soil environment by constructing transparent soil model, in combination with image recognition, digital image correlation, fiber-optic sensing and resistance sensor and other multi-source sensing technology, the micro deformation, stress distribution and failure evolution process of pile-soil interface in loading process are monitored and analyzed in real time with high precision, realize the high-precision, full-process, visual measurement of pile-soil interface micro evolution, improve measurement precision.

This utility model discloses a visual soil model experimental device, which includes an experimental box, a base, a control cabinet, a compressor, a pressure tank, and a water tank. The control cabinet is electrically connected to the compressor and the pressure tank, and the output end of the compressor is connected to the inlet pipeline of the pressure tank. The pressure tank and the water tank are fixedly mounted on the top end face of the base. The outlet of the pressure tank is connected to the inlet pipeline of the water tank, and the outlet of the water tank is connected to the water inlet pipeline. The top of the experimental box is open, and telescopic devices are fixed on both sides of the top of the experimental box. A support frame is fixed between the top ends of the two telescopic devices. An annular water pipe is fixed on the bottom end face of the support frame. A nozzle is installed on the outer wall of the annular water pipe. The nozzle communicates with the inside of the annular water pipe, and the inlet of the annular water pipe is connected to the water inlet pipeline.

The application discloses a marine environment flow state solidified soil continuous impact test device and operation method, belongs to the technical field of flow state solidified soil model test, and comprises a solidified soil model test mechanism, wherein a falling body test mechanism is arranged in the solidified soil model test mechanism, the solidified soil model test mechanism comprises a test shell, and a limiting assembly for limiting a supporting net is arranged on one side of the test shell. The marine environment flow state solidified soil continuous impact test device and operation method release the gravity ball through the releasing assembly, and then the gravity ball can impact the model downward for test; after the test, the model conveying assembly cooperates with the supporting net to convey the slag to the upper side, so that the slag can be automatically output through the impurity automatic output assembly, the slag residue can be avoided from affecting the next test, the model can be recharged, the model can be continuously and circularly conveyed through the model conveying assembly, the model can be sequentially converted, the detection, charging and slag discharge can be simultaneously performed, and the test efficiency is improved.

This invention discloses a visual transparent soil model test device and method for studying embankment deformation, belonging to the field of highway engineering test technology. It solves the problem that existing model test methods cannot visually display the internal deformation of embankments under load, thus hindering the analysis of foundation deformation patterns. Specifically, it includes a model box located at the bottom of a reaction frame, with an actuator mounted on top of the reaction frame. The model box is filled with soft soil material, and a loading plate is laid on top of the soft soil material. The bottom of the actuator contacts the loading plate. In this invention, the actuator applies a sinusoidal load to the soft soil material inside the model box, simulating traffic loads on the embankment. An industrial camera is used to capture real-time images of the changes in the speckle field of the soft soil beneath the embankment and within the embankment during the application of traffic loads, thereby analyzing the deformation mechanism of highway embankments in complex mountainous terrain. The analysis results are accurate and reliable, providing data support for the design and construction of highway subgrades in mountainous areas.

The present application relates to the technical field of submarine pipeline performance test, and discloses a submarine pipeline earthquake damage effect underwater shaking table simulation device and method, which comprises a water pool provided with a wave generator at one end and a wave absorbing net at the other end; a shaking table, which is concave downward at the bottom of the water pool to form a mounting groove, is arranged in the mounting groove and located between the wave generator and the wave absorbing net; a soil model box, which is arranged on the shaking table, has an opening at the top and is filled with test soil to form a seabed foundation, which is flush with the bottom of the water pool; and a pipeline model, which is arranged on the seabed foundation. The device can accurately simulate the propagation process of seismic waves in the seabed, fully consider the interaction between the submarine pipeline, soil and seawater, and has multiple working conditions and adjustability, so that the seismic response of the submarine pipeline under different working conditions can be accurately monitored and analyzed, and reliable basis can be provided for the seismic design and safety evaluation of the submarine pipeline.

This invention belongs to the field of magnetic variable measurement technology, specifically disclosing a non-contact method and system for rapid mapping of grounding grid topology. The method includes: generating a customized excitation signal highly matched to the current soil conductivity and electromagnetic noise environment through preliminary environmental detection, ensuring from the source that the detection signal possesses both excellent penetration depth and anti-interference capability; integrating electromagnetic and physical environment data into the measurement path planning, and dynamically weighting and fusing multi-source measurement data based on environmental parameters to achieve full-process optimization of the measurement process. This collaborative mechanism enables the final fused data to more comprehensively and accurately characterize the spatial location of conductors from shallow to deep; and significantly improving the accuracy and reliability of topology reconstruction by introducing signal compensation based on a dynamic soil model and a topology connection verification mechanism based on response field gradient.

This invention relates to the field of geological testing equipment technology, and discloses a multi-rail triaxial loading rock and soil geological mechanics structure testing sensing device and control method. The device includes: a multi-rail triaxial loading rock and soil geological mechanics model; a sensor group, which is a pressure sensor array; a data acquisition module for acquiring pressure information from the sensor group and constructing a pressure distribution matrix based on the pressure information of each loading contact surface; an information processing module for obtaining the loading uniformity of the corresponding loading contact surface based on each pressure distribution matrix; a loading adjustment module for adjusting the posture of the corresponding hydraulic cylinder based on historical data until the loading uniformity meets the standard; the loading adjustment module is also used to adjust the output of the corresponding hydraulic cylinder based on the pressure distribution matrix and historical data. This invention achieves dual optimization of loading uniformity and multiaxial coordination, thereby improving the fidelity, reliability, and intelligence level of rock and soil model testing.

The application discloses a soil internal shear wave velocity field visualization test device based on transparent soil and bending element and a use method thereof. The device comprises a transparent soil model box, an array type bending element system, an optical measurement subsystem, a signal excitation and collection subsystem, and a central control and data processing unit. A mounting hole arranged in a matrix is formed in the side wall of the transparent soil model box. The array type bending element system comprises an optical transparent support fixed at the mounting hole and a bending element transducer installed in the support, and the probe of the bending element transducer passes through the support and the mounting hole and is embedded in the transparent soil sample. The optical measurement subsystem is used for shooting speckle images and obtaining the soil internal strain field. The signal excitation and collection subsystem is used for cyclically switching each transmission-reception combination to form a dense cross-ray path network. The central control and data processing unit synchronously controls each subsystem, inversely reconstructs the soil internal wave velocity field cloud picture, and superimposes and analyzes the PIV strain field.

The application relates to the technical field of power systems, and discloses a sublayered soil condition-based substation grounding grid collaborative optimization method, measurement lines and measurement points are arranged in a substation site, the Wenner four-electrode method is used to measure resistivity, a field survey data set is formed, a composite soil structure model containing horizontal sublayering and vertical sublayering is constructed, forward calculation and inversion calculation are carried out, optimal composite soil structure parameters are obtained, a simulation model of the substation grounding grid is established, a multi-objective particle swarm optimization algorithm is used to collaboratively optimize the grounding grid, and an optimized grounding grid design scheme is output; the application constructs the composite soil structure model containing horizontal sublayering and vertical sublayering, carries out forward calculation and inversion calculation based on the field measured data of the Wenner four-electrode method, and obtains the optimal composite soil structure parameters, so that the authenticity of the soil model and the accuracy of the grounding grid simulation calculation are significantly improved, reliable data support is provided for subsequent optimization, and the accuracy of the optimization is ensured.

This invention relates to the field of geotechnical and bridge foundation engineering technology, and in particular provides a method for calculating the vertical bearing capacity of ultra-long pile groups in ultra-deep silty soft soil. The method includes parameter acquisition and inversion, and the construction of a three-dimensional saturated soft soil model. u - p The method employs a coupled model to simulate the construction-consolidation-immersion time sequence, construct and couple the transmission of multi-source traffic dynamic loads, and perform constitutive modeling of pile-soil interface bonding-slippage-softening, identification and redistribution of negative skin friction and neutral point. It also assesses the energy efficiency of pile groups and evaluates the reduction in cyclic dynamic effects. Furthermore, it obtains static and dynamic expressions and algorithms for vertical bearing capacity, and develops consistency criteria for service settlement, DAF (Dynamic Aspect-Oriented Fallout), and reliability. The method enables automated optimization of design and operation parameters, with software system and data flow implementation. It allows for optional implementation and standard compatibility, result verification, and full-lifecycle application. This method accurately characterizes the spectral characteristics and transmission paths of multi-source traffic dynamic loads and quantifies the energy dissipation and efficiency changes of pile groups.

The wheel-soil model small sample phased Bayesian inversion method solves the problems of serious parameter coupling, poor distinguishability and difficult quantification of uncertainty in the wheel-soil model parameter inversion process under small sample conditions, and belongs to the field of planetary exploration robot ground mechanics parameter identification. The model distinguishability is improved through parameter reconstruction, and the inversion process is divided into multiple stages according to the slip working conditions: first, the pressure-related parameters are estimated using low-slip data, then the shear-related parameters are estimated using high-slip data, and the uncertainty is propagated across stages. Through the above mechanism, the influence of parameter coupling can be effectively reduced under small sample conditions, and the parameter estimation results with physical interpretability and containing confidence information can be achieved, thereby providing reliable support for the motion control and environment adaptation of the exploration vehicle.

This invention belongs to the field of crushed stone grouting pile testing technology, and discloses a transparent soil model test system and method for testing the grout consolidation and bearing capacity of crushed stone grouting piles. This addresses the problems of high cost and large errors in existing technologies for studying crushed stone grouting piles. Specifically, it includes: a grouting system, a drilling system, a vertical bearing capacity testing system, a continuous physical field measurement system, a model box, and a mounting frame. The model box is filled with transparent soil. The drilling system drills holes in the transparent soil; the grouting system grouts the holes; the vertical bearing capacity testing system detects the vertical bearing capacity of the crushed stone grouting pile; and the continuous physical field measurement system acquires image information. The system of this invention allows for direct observation of the crushed stone grouting pile through transparent soil, facilitating the analysis of changes in the pile structure during vertical bearing capacity testing. The method of this invention provides real-time monitoring and recording of changes in the physical field of the crushed stone grouting pile and the surrounding soil during testing, providing intuitive image support for pile foundation performance evaluation.

This application discloses a method, device, and medium for evaluating the mobility of off-road vehicles based on a dynamic soil model, relating to the field of vehicle mobility evaluation technology. The method includes: calculating the soil cohesion modulus and soil friction modulus corresponding to the vehicle's speed using a dynamic soil bearing capacity model during each speed scan; performing iterative calculations of four-wheel vehicle dynamics and loads to obtain stable settlement and wheel load data; and further calculating the total vehicle resistance. Then, the hook traction force is determined using a dynamic soil shear model. Finally, dynamic constraint tests, comfort constraint tests, and hard passability constraint tests are performed using driver comfort indicators to determine a permissive maximum speed. The above-mentioned solution achieves off-road mobility evaluation that balances soil dynamics and occupant comfort, improving the authenticity and reliability of high-speed off-road mobility evaluation results.

The application discloses a diaphragm wall model test device and a test method. The test device comprises a soil model box, a counterforce frame, a diaphragm wall model, a rubber sleeve bag with an internal support framework, a static loading and earthquake simulation loading device, a lateral constraint device and in-box filling soil. Unequal high filling soil on both sides of the diaphragm wall is realized through the rubber sleeve bag. The horizontal constraint effect of the rigid layer of the underground structure is simulated through the laterally arranged hydraulic jack. The vertical static loading is simulated through the loading block. The horizontal lateral pressure in the soil body, which is converted from the vertical alternating electromagnetic force generated by the electromagnet, simulates the earthquake load. The dynamic response of the earthquake simulation loading device and the lateral constraint device to the in-box soil body and the model does not interfere with each other. The test device is convenient and fast to disassemble and assemble, has good airtightness and is convenient to use. The diaphragm wall can be accurately simulated under the action of the static load of the soil body and the earthquake in the laboratory, and the response can be tested to evaluate the performance.

The application discloses a bridge structure deformation real-time prediction method based on finite element analysis, which comprises the following steps: a coupling model containing a bridge structure and a rock-soil finite element model is established; a proxy model of a graph neural network is introduced to reproduce the mechanical response of the rock-soil model; in the real-time prediction stage, an asynchronous time step framework is adopted, the bridge structure model is iterated at a small step, and the proxy model provides interface reaction force at a large step, so that the calculation efficiency is improved; by receiving the actual monitoring deformation data of the bridge, the key parameters of the rock-soil finite element model are reversely calculated and updated based on the Bayesian inference theory, the initial parameter deviation and the model time-varying effect are eliminated, the retraining of the proxy model is triggered after the parameter updating, and the prediction model is ensured to be long-term synchronized with the real state of the bridge; the application solves the problem that the traditional finite element analysis is difficult to consider real-time performance and long-term accuracy, and provides reliable prediction for the whole life cycle health monitoring and prospective maintenance of the bridge structure.

This invention discloses a rapid static and dynamic mixing method for transparent sand pore fluid based on real-time temperature feedback, belonging to the field of geotechnical engineering physical model testing technology. This invention uses an improved transparent soil model box, which consists of a base plate, a transparent box body, and a nozzle. The method includes the following steps: a static mixing step, comprising: A1: obtaining the test environment temperature; A2: calculating the optimal component ratio that matches the refractive index of the pore fluid with the refractive index of the transparent aggregate based on a pre-constructed empirical formula relating the pore fluid refractive index to temperature and component ratio; A3: weighing the component materials according to the optimal ratio and mixing them uniformly to obtain the pore fluid. The advantages are: this invention overcomes the shortcomings of traditional transparent sand preparation methods that rely on repeated trial mixing and cannot adapt to changes in environmental temperature, achieving rapid and accurate mixing of transparent sand at specific temperatures or in variable temperature environments, effectively improving the effective resolution of laser speckle and the measurement accuracy of the displacement field during the test.