Method for analyzing microstructure motion state of sand particles at structural interface

Abstract

The invention discloses a method for analyzing a microstructure motion state of sand particles at a structural interface. The method comprises the following steps: calculating kinematic parameters ofsand particles according to a shot structural interface sand particle loading motion process image, and calculating positions of contact points of adjacent sand particles; according to the positions of the adjacent sand particle contact points and a preset judgment rule, determining the friction types of the adjacent sand particle contact points; constructing the kinematic parameters of the sand particles and a friction type result graph of contact points of the adjacent sand particles; and according to the kinematics parameters of the sand particles, acquiring a sand particle triangular structure meeting a preset triangular rule, and constructing a sand particle triangular structure state trend chart. The method for analyzing the microstructure motion state of the sand particles at the structural interface is achieved; meanwhile, the calculation speed is high, result graphics are displayed clearly and richly, the application range is wide, and an effective theoretical basis can be provided for analyzing the interaction characteristic of the structural interface and a soil body.

Description

technical field [0001] The invention relates to a method for analyzing the motion state of the mesoscopic structure of sand particles at a structure interface, belonging to the field of analyzing the state characteristics of the mesostructure of the interaction interface between structures and soils. Background technique [0002] Granular media is a complex system composed of a large number of solid particles interacting. Sand, rockfill, etc. are typical granular media systems. Their macroscopic mechanical properties are closely related to the particles and their internal mesoscopic structures. Therefore It is very important to ascertain and explain the macroscopic mechanical properties of granular systems from the perspective of particle mesoscopic in order to establish a relationship between mesoscopic and macroscopic. [0003] In order to understand the load-bearing characteristics of the structure interacting with the soil in essence, the mesoscopic movement of the sand ...

AI Technical Summary

Problems solved by technology

During the interaction between the structure and the soil, a series of photos of the fixed soil area at the interface of the structure can be taken, and the overall displacement field data of the soil can be obtained by using the existing PIV (Particle Image Velocimetry) analysis technology, but it is impossible to track each The movement state of a single sand particle, the interaction between sand particles, and the change state of the mesostructure formed between multiple sand particles

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