Improvement of Calculation of Stresses in the Earth Bed and Layers of Road Clothes from Granulated Materials. Part 1. Analysis of Decisions and a New Method

International Multi-Conference on Industrial Engineering and Modern technologies

Aleksandrov, A.S.^1 ; Dolgih, G.V.^1 ; Smirnov, A.V.^1

Siberian State Automobile and Highway University, Mira Avenue 5, Omsk

644080, Russia^1

关键词: Compression pressures;    Discrete material;    Engineering methods;    Granulated material;    Lateral expansion;    Stress calculations;    Triaxial compression;    Uni-axial compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/463/2/022022/pdf
DOI  :  10.1088/1757-899X/463/2/022022

来源: IOP

【 摘 要 】

The bases of road clothes made of discrete materials have become widespread in the practice of building roads throughout the world. Experimental studies of various loads have shown that an adequate calculation of stresses by formulas in the mechanics of a continuous medium is practically impossible. The article presents a method for modifying stress calculation models, the application of which allows supplementing the solutions of granular medium mechanics and engineering methods with dependencies for calculating the minimum main stress σ3. Following this method, some solutions have been modified, and modified models are given. These models make it possible to calculate the main stresses in a layer of finite thickness in the section on the axis of symmetry of the load distributed along the circular platform. In accordance with this method, in the section along the axis of symmetry of the load at the point z=0 compression pressure occurs, that is 2=3=0. Within the limits of depth change 02=32=σ3=0 and 2=3=-μ•1.