4 results about "Soil arching" patented technology

The application discloses a soil arching effect degradation rate prediction method based on a stratum characteristic curve, and aims at solving the problem that the soil arching effect degradation caused by double-line tunnel excavation is difficult to quantitatively characterize. S1, discrete and parameter vectorization are carried out on the monitoring data of the double active door test; S2, an analytical expression of the stratum characteristic curve above the left and right active doors is constructed, and initial boundary conditions and limit stable boundary conditions are determined; S3, a physical guide neural network is constructed, the network parameter iterative optimization is guided through a comprehensive loss function, and optimal fitting parameters and an optimal analytical expression of the stratum characteristic curve are output; S4, the soil arching effect degradation rate η is calculated and constructed, and the quantitative prediction of the degradation degree is completed. The dual guarantee of data fitting accuracy and physical interpretability is realized, and the non-dimensional index of the output degradation rate fills the blank of the unified quantitative index of the soil arching effect degradation under secondary unloading, and can serve the stratum disturbance risk assessment and safety control of the double-line tunnel underpass project.

This invention relates to the field of intelligent testing technology in geotechnical engineering, and in particular to a method and system for the co-evolution analysis of physical effects in pile-supported reinforced embankments. The method includes the following steps: fitting a pile-supported reinforced embankment using a model box, soil samples, and reinforcing materials to construct test conditions; acquiring multi-source test datasets through multi-modal data acquisition using a sensor array; performing data preprocessing and feature extraction to obtain soil arching effect feature sets and tensile membrane effect feature sets; constructing a machine learning model and obtaining a machine learning training model using model training data; acquiring the physical effect feature set to be analyzed, and combining it with the machine learning training model to obtain the co-evolution analysis results of physical effects. This invention enables controllable simulation of the degradation of soil arching effect and the enhancement of tensile membrane effect, and provides a quantitative evaluation of the structural stress and deformation response under different reinforcement stiffness conditions, offering experimental and predictive basis for the rational selection and optimized design of reinforcement materials.

This invention provides a method and apparatus for determining seismic design information of anchored sheet pile walls, which can be applied to the field of geotechnical engineering. The method includes: obtaining stiffness correction coefficients for multiple seismic earth pressure information based on the relative stiffness information between the sheet pile wall and adjacent soil; dividing the sheet pile wall into multiple continuous segments with stress characteristics along the height direction based on the peak stress value indicating stress concentration due to soil arching effect at the upper part of the sheet pile wall, the inflection point between the stress concentration zone and stress reduction zone of the sheet pile wall, the stiffness correction coefficients, and multiple seismic earth pressure information; combining the earth pressure gradient values ​​of each segment as a function of height to obtain an earth pressure gradient array characterizing the distribution of the wall along the height direction; and determining the design value of the anchor tension for reinforcing the sheet pile wall and the design value of the earth pressure mobilization depth in the passive zone at the bottom of the sheet pile wall based on the earth pressure gradient array and the equilibrium function.

This invention proposes a method and system for calculating longitudinal uneven deformation of corrugated steel plate support structures, belonging to the field of transportation infrastructure structural design technology. The method includes: constructing an orthotropic equivalent stiffness model of the corrugated steel plate, treating the corrugated steel plate support structure as an equivalent Timoshenko beam, and calculating the equivalent section bending stiffness and equivalent section shear stiffness; constructing a calculation model for longitudinal uneven deformation, determining the longitudinal differential load distribution based on the actual soil cover conditions and soil arching effect above the corrugated steel plate support structure; and calculating the longitudinal differential load distribution based on the longitudinal uneven deformation calculation model to obtain the longitudinal uneven deformation of the corrugated steel plate support structure. This invention enables effective and rapid assessment of the longitudinal uneven deformation of shallow-buried corrugated steel plate support structures.