16 results about "Vertical displacement" patented technology

This invention relates to the field of underground engineering structural safety assessment methods, providing a method for analyzing the longitudinal deformation and stress of rectangular pipe jacking under existing pressure pipelines. The method includes: establishing a simplified mechanical model of the pressure pipeline; establishing a prediction model for ground settlement caused by the rectangular pipe jacking by modifying the Peck empirical formula, and establishing an analytical relationship between the vertical displacement of the pipeline and the free displacement of the soil; solving the longitudinal displacement field of the pipeline caused by the new rectangular pipe jacking under the pipeline based on the displacement compatibility equation; and applying the Mises stress criterion to calculate the composite stress state of the pipeline, thereby achieving a pipeline stress safety assessment. This invention proposes a calculation method considering the coupling of internal pressure, pipeline, and soil, and theoretically establishes a quantitative relationship between displacement and stress of municipal pipelines caused by the new rectangular pipe jacking under the pipeline. This method can consider the influence of internal forces in municipal pipelines, providing a reliable theoretical method for the safety assessment of rectangular pipe jacking under municipal pressure pipelines.

The application relates to a drilling rod withdrawal counting method and system based on AI vision, and belongs to the field of industrial intelligent perception and mine safety monitoring. In view of the problem that the drilling rod withdrawal counting in underground drilling operation is easily interfered by a water injector, short-time shaking and human operation, and false counting and missing counting are caused, automatic and reliable rod withdrawal counting is realized by combining visual perception and time sequence logic. The method only takes the composite structure containing a drill rod male head and a rod body as a detection object, cooperates with frame-level target detection and multi-target online tracking, and obtains a stable and continuous target trajectory; direction determination is performed based on the normalized average vertical displacement of the trajectory center point, the influence of resolution and installation difference is eliminated, and mechanisms such as time interval constraint, abnormality determination, timeout reset and counted trajectory management are combined, so that repeated counting and abnormal interference are effectively avoided. The application significantly improves the accuracy, robustness and auditability of the rod withdrawal counting under complex underground working conditions, and has good engineering applicability.

The utility model discloses a kind of mixed filler and geotextile friction performance testing device, it is related to geotextile friction performance testing technical field, including steel frame, geotextile fixed assembly, sample box, loading assembly and monitoring component, the inside surface middle position fixed connection of geotextile fixed assembly with steel frame one side, another opening of sample box and geotextile fixed assembly abut, loading assembly and sample box side abut for applying pressure to sample box, monitoring component is set in the top of sample box for monitoring the vertical displacement of sample box. The utility model solves the difficult problem of vertical load automatic loading by the process that sample box is under the action of gravity and falls down downwards, compared with the traditional test equipment, only test fine particle sand, the utility model can also adjust sample box size to meet different gradation coarse, fine particle soil, simple operation, and measurement is accurate.

The application discloses a GNSS thermal-elastic deformation estimation method based on a layered full-spectrum finite element model, which constructs a thermal-elastic coupling finite element model of a multi-layer medium of "shallow soil-deep bedrock", uses reanalysis soil temperature data with a resolution of 6 hours as temperature forcing, carries out site modeling in combination with site layered parameters (such as thermal / mechanical parameters and thickness of soil and bedrock), and adopts multi-UTC time solving and vector averaging to inhibit time sequence bias caused by fixed UTC sampling; in numerical solving, diurnal, seasonal to interannual full-band thermal-elastic responses are solved by explicit analysis, and the vertical displacement estimation sequence of the GNSS site and the correction field are output, so that the method is used for non-structure signal separation and precision improvement of the GNSS coordinate time sequence, and has global promotion and engineering application feasibility.

This application discloses a precise correction method for the GNSS vertical velocity field based on multi-source load modeling, relating to the fields of geodesy and geophysics. The method includes: acquiring multi-source surface mass load data; constructing a multi-source load dataset; calculating the vertical displacement response of the Earth's surface under point loads based on an elastic Earth model and using Farrell's load Green's function theory, obtaining the load Green's function by solving for the load Love number and summing Legendre series; using the spherical Green's function integration method to calculate the vertical displacement of each grid point on the global grid caused by all mass loads, constructing a global load deformation field, performing time series analysis, and extracting the load correction at the locations of each GNSS station globally; subtracting the load correction from the global GNSS vertical velocity field, while simultaneously subtracting the glacial isostatic adjustment effect, to obtain the corrected GNSS vertical velocity field. This application can obtain accurate and reliable GNSS vertical velocity information.

The present application relates to the technical field of physical quantity measurement, and particularly relates to a bridge spliced joint deformation detection method and device, comprising: collecting vertical and horizontal displacement sequences on both sides of the spliced joint; through spectrum extraction and reconstruction technology, identifying and removing temperature deformation components from the vertical displacement sequence to generate a first estimated displacement sequence; based on the correlation coefficient of the sequence and the measured temperature sequence, adaptively adjusting the target spectrum and the denoising parameters to realize effective separation of temperature effect and vehicle load effect. Through deformation source separation and adaptive anti-interference optimization, the present application finally realizes reliable measurement of multi-dimensional deformation of the bridge spliced joint.

This application relates to the field of polar marine disaster monitoring and early warning technology, and discloses a method and monitoring system for predicting ice shelf collapse risks. The method includes: establishing a sea-ice collaborative observation environment; obtaining the vertical displacement of the ice shelf using a base station-free carrier phase epoch difference algorithm; calculating wave propagation delay and establishing synchronous excitation response data pairs; dynamically correcting the equivalent bending stiffness of the ice shelf based on the energy transfer ratio evolution characteristics; combining real-time monitoring of the cross-sectional geometric curvature to invert and correct the instantaneous bending stress; statistically calculating the cumulative fatigue damage degree through stress cycles; constructing a ternary risk index system including instantaneous fracture, fatigue damage, and structural degradation; generating a comprehensive risk score and implementing graded control. This invention solves the problem of base station-free high-frequency deformation monitoring, corrects the stress calculation error caused by the constant stiffness assumption, and achieves accurate early warning of the entire process from damage accumulation to structural instability of the ice shelf.

The utility model discloses a high stability's water pipe two -way anti -seismic support relates to water pipe anti -seismic support technical field, including support shell body, the inboard lower extreme fixedly connected with fixed sleeve of support shell body, the inboard sliding connection of fixed sleeve has the lifting column, the upper fixedly connected with mounting panel of lifting column, the upper fixedly connected with a plurality of water pipe clamping seat of mounting panel, the utility model discloses a high stability's water pipe two -way anti -seismic support, in vertical direction, utilize the same pole repulsion principle of first magnet and second magnet and form elastic buffer, can steady absorption vertical vibration energy in the direction of cooperation limit stopper and the guiding effect of limit slot, on the horizontal direction, through horizontal push subassembly and convert vertical displacement into horizontal power, drive buffer assembly in first buffer spring, second buffer spring double -elastic structure of energy offset, realized the comprehensive protection of multidirectional vibration.

This invention discloses a multi-functional adjustment component for steel column installation, including an elevation adjustment device and an axis adjustment device. The elevation adjustment device, installed within the cup-shaped foundation, supports the steel column and includes an inclined adjustment disc, an adjustment base, and a drive mechanism. The inclined adjustment disc is driven by the drive mechanism to move relative to the adjustment base in a direction inclined to the horizontal plane, generating vertical displacement and causing the steel column to rise and fall vertically, achieving continuous stepless adjustment of the installation elevation. The axis adjustment device is located between the side wall of the steel column and the side wall of the cup-shaped foundation, used to drive the steel column to move horizontally to adjust the axis position. This invention integrates elevation and axis adjustment into one unit, eliminating the need for secondary lifting of the steel column. Precise elevation adjustment can be completed outside the cup-shaped foundation, while simultaneously solving the problem of axis adjustment in confined spaces. It is simple and quick to operate, offers high adjustment accuracy, is reusable, significantly improves steel column installation efficiency, and reduces damage to the foundation structure.

This invention relates to the field of underground structural engineering, specifically disclosing a nonlinear strength calculation method for the softening of soil resistance around a tunnel under conditions of rising groundwater levels. The method includes: S1, decomposing the tunnel deformation into ellipticity deformation and vertical displacement deformation, where the vertical displacement is determined by the external upward load; S2, using conformal mapping and complex potential function expansion, constructing an analytical function satisfying the Cauchy-Riemann condition to obtain an analytical expression for the displacement field of the soil around the circular tunnel; S3, discretizing the soil region, converting the strain distribution, and calculating the element shear strength and strain energy; S4, based on MSD theory, back-calculating the soil resistance through energy balance; S5, setting different groundwater level parameters to quantify the degree of softening. This invention can quantify the softening of soil resistance caused by rising groundwater levels, and the degree of softening increases with increasing deformation, making it suitable for safety assessment and design optimization of tunnels under the influence of water level fluctuations.

The application provides a kind of earth-rock dam vertical displacement automated monitoring method and device, it is related to water conservancy and hydropower engineering safety technical field, method includes: for each intelligent measuring station in n intelligent measuring stations for monitoring earth-rock dam vertical displacement, according to the first elevation of the steel pipe target buried in bedrock, the elevation of intelligent measuring station is corrected, and the second elevation of intelligent measuring station is obtained;p observation values obtained by n intelligent measuring stations on m prism monitoring points on earth-rock dam body are acquired, and each observation value represents the observation height difference between a single intelligent measuring station and a corresponding single prism monitoring point;observation value vector is constructed according to p observation values, and the elevation of m prism monitoring points is taken as unknown parameter vector;unknown parameter vector is solved according to observation value vector, and vector solution is obtained, vector solution includes m target elevations corresponding to m prism monitoring points one by one;the vertical displacement change of earth-rock dam is analyzed according to m target elevations.

The present application belongs to the technical field of true horizontal / vertical displacement calculation method of strike-slip fault, and particularly relates to a true horizontal / vertical displacement calculation method of strike-slip fault using three-dimensional seismic data horizontal slice and vertical profile, in the research area corresponding to the seismic data body, according to the well layer data calibration horizon and horizon interpretation, combining the seismic response characteristics of the seismic profile in the three-dimensional seismic data, identifying and finely interpreting the profile structure style characteristics of the strike-slip fault zone, completing the seismic interpretation of the strike-slip fault zone, determining the extension form, length, azimuth angle of the strike-slip fault zone on the plane and the fault extension on the profile.

The application discloses a complex sea area wave height measuring method and system based on PPP-B2b and ADCP, and comprises the following steps: obtaining PPP-B2b correction information by using GNSS, combining the correction information with broadcast ephemeris, generating precise orbit and clock error, and obtaining corrected positioning information; collecting flow velocity collected by an ADCP sensor and inertial data collected by an inertial measurement unit in real time, and obtaining preliminary position information by processing; performing weighted fusion on the preliminary position information and the corrected positioning information, obtaining fused real-time position and motion velocity, performing vertical motion velocity integration according to the real-time position and the motion velocity, obtaining vertical displacement change information with time, and then extracting real-time wave height by using a cross-zero method and a spectrum analysis method. The wave height measured by the application has higher precision.

This invention discloses a constant-force flexible support structure for gas-insulated pipes (GILs), comprising: a base plate with dampers fixed on both its left and right sides; a base slidably connected horizontally to the top of the base plate, with two dampers contacting each side of the base to accommodate horizontal dislocation deformation of the GIL tube; a vertical constant-force compensation support assembly disposed inside the base, with a support plate extending outward from the top of the base; and a GIL tube support fixed to the GIL tube, with the bottom end of the support fixedly connected to the top of the support plate to accommodate vertical dislocation deformation of the GIL tube. The horizontal sliding base, the vertical compensation assembly, and the ball joint clamp work together to enable this invention to simultaneously accommodate the horizontal lateral displacement, vertical displacement, and angular deformation of the GIL tube, achieving three-dimensional omnidirectional flexible support and significantly improving the operational reliability of the GIL under complex geological conditions.

The application discloses a novel method and corresponding measuring device for rapidly measuring key mechanical parameters of rock, including scratch hardness, Brinell hardness, Young's modulus and Mohr-Coulomb parameters (uniaxial compressive strength and internal friction angle). The equipment system comprises a portable frame, which contains a set of horizontal linear driving equipment, equipped with a set of linear encoders for accurately measuring horizontal displacement; the vertical direction contains a set of servo vertical driving equipment, equipped with a set of incremental magnetic encoders for accurately measuring vertical displacement, and a set of linear variable differential transformers (LVDT) for accurately sensing the slight concave-convex fluctuation of the rock surface; the servo motor drives the hemispherical composite piece through a screw rod; the size of the force in the horizontal and vertical directions of the scratch is measured by a bidirectional force sensor installed above the composite piece. The horizontal linear motor and the vertical servo motor are both loaded at a uniform speed; according to the size of the measured force, the scratch hardness and the Brinell hardness of the rock can be calculated; according to the theoretical solution of the slip line field hemispherical tooth, the Mohr-Coulomb parameters of the rock, including the uniaxial compressive strength (or cohesive force) and the internal friction angle, can be inversely calculated. When the vertical servo motor is loaded alone, the Brinell hardness of the rock can also be calculated; the Young's modulus can be calculated by the stiffness during unloading.