soil Mechanics

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Uploaded: 01.12.2015
Content: Механика грунтов .rar (2479,76 kB)

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Setting 1.Supes has a natural moisture content W% and the proportion of γ. To determine the proportion of dry soil γd, porosity n and the porosity is, if the proportion of particles γs.
Setting 2.Vlazhnost clay on the border of fluidity is WL%. To determine the proportion of dry soil γd and void ratio e for W = Wp, if the proportion of particles is γs.
Setting 3.Opredelit soil deformation modulus E, if the load increases on Δσ porosity ratio decreased from e1 to e2.
Setting 4.Opredelit as the porosity of the soil has changed the base is under compression compression (Δn), if after the superstructure of the building pressure under the sole foundation changed to Δσ = 0,2σ when compressibility factor α and the initial void ratio e1.
5. In Task resulting test sample sand (c = 0) on the ground trehsnosnoe compression, the values of the principal stresses σ1 and σ2. Determine the angle of internal friction φ and write strength in terms of the principal stresses σ1 and σ3; through normal and shear stress σ and τ on platforms cut; through voltage σz, σy, τzy, acting on the non-principal areas identified in the soil.
Task 6. In test results on two identical compression trehsnosnoe silty clay soil samples, the values of the principal stresses σ1, σ2 and σ´1, σ´2. Record two conditions for the strength of the soil by setting the values of φ and from that soil.
Setting 7.On surface linearly deformable medium along the x axis acts infinitely extended uniformly distributed load intensity q1. Determine the vertical compressive stresses (four values) along the axis z. Build epure σz, excluding from consideration semicircle of radius R = 0.5 m (z≥0,5m).
Setting 8.Opredelit voltage values and build epure four points compressive stresses σz, a horizontal section at depth z under the action on the ground surface of an infinitely long strip uniformly distributed load of intensity q and width b (Scheme 3, Tab. 7).
Setting 9.Podpornaya wall height H is deepening the foundation of d and the width b (Scheme 1). Soil - sandy, with a specific weight γ and the angle of internal friction φ. Clutch C1 = 0. Construct epure passive pressure (resistance) to calculate the total passive pressure E and its point of application.

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