Study on Poisson Ratio of Soil-Rock Mixture in Low Strain

Abstract

Longitudinal wave velocity and shear wave velocity of two kinds of the soil-rock mixture samples with different stone content and water content are tested. Then the poisson ratio of the samples in Low Strain can be calculated with the method of wave velocity testing. Analyzing the relationship between poisson ratio, water content and stone content, the dualistic nonlinear models of poisson ratio, water content and stone content are established. The result of verifying is shown that the absolute error of poisson ratio is less than 0.01 and the relative error is less than 2%. The models not only can show the relationship between poisson ratio, water content and stone content but can provide the reference when changing the Rayleigh wave velocity to shear wave velocity each other.

Seismic Design of Reasonable Spacing between Anti-Slide Pole Board Wall of High and Steep Slope in High-Intensity Earthquake Region

“…Taking into account the degree of seismic intensity VIII, using transfer coefficient which considered landslides and seismic forces thrust force P = E p + E i = 2300 kN/m. This section is derived in accordance with the method and [7,8] methods were compared. According to this paper's method , pile spacing can be taken as L = 5m.…”

Stability Study on Jointed Rock Mass Affected by Fissure Water Pressure

“…Scholars at home and abroad have done lots of research work on the failure mechanism of jointed rock mass. Zhang [1] has established a coupled thermo-hydro-mechanical model of dual-porosity medium for ubiquitous-joint rock mass, and probed into the effects of fracture penetration rate on coupled temperature field, seepage field and stress field; Deng [2] has analyzed the impact of fissure water pressure on the crack intensity factor from the point of fracture mechanics, and the expand of I-II mixed mode crack considering the impact of fissure water pressure. Chai [3] has proposed an equation for the hydrostatic seepage pressure and the hauling force under single fissure without fillings, single fissure with fillings and water-filling flow, and then analyzed quantitatively the double mechanical effects of fissure flow on the joint walls.…”

Digital Image Correlation Test System with Automatic Transmission for Quasi-Brittle Material

“…Rock and concrete are as heterogeneous materials as other quasi-brittle materials [1][2][3][4][5], mechanical properties and fracture mechanism of which are particularly complex. Mechanical experiment [5][6][7] is an important method to study mechanical behavior of the quasi-brittle materials.…”

“…Rock and concrete are as heterogeneous materials as other quasi-brittle materials [1][2][3][4][5], mechanical properties and fracture mechanism of which are particularly complex. Mechanical experiment [5][6][7] is an important method to study mechanical behavior of the quasi-brittle materials. Previous experimental [1,[5][6][7] study shows that specimen deformation has dynamic (quick evolution in time, especially before destroy) and heterogeneous (the distribution of deformation and destroy are not uniform in space) characteristics.…”

“…Mechanical experiment [5][6][7] is an important method to study mechanical behavior of the quasi-brittle materials. Previous experimental [1,[5][6][7] study shows that specimen deformation has dynamic (quick evolution in time, especially before destroy) and heterogeneous (the distribution of deformation and destroy are not uniform in space) characteristics. The former means that deformation and failure of materials is a dynamic process, deformation localization and catastrophic destroy is a rapid evolution process (generally within seconds), even though under quasi-static loading, therefore, quick observation is required.…”