By Sheng Y. Peng
Read Online or Download Practical Problems in Soil Mechanics and Foundation Engineering, 2 Wall and Foundation Calculations, Slope Stability PDF
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Additional resources for Practical Problems in Soil Mechanics and Foundation Engineering, 2 Wall and Foundation Calculations, Slope Stability
Assume that the reinforced concrete unit-weight was 23kN/m3 and the angle of friction between concrete and rock was 8 — 30°. Solution (1) Analysis of wall stability Assumptions used for calculation Because of the poor quality of the drainage material, the calculation must consider the hydrostatic pressure (assuming that the water level is at the top of the wall). The earth pressure at the heel of the wall is considered as non-existent since it is encompassed in the rock. 70 m Fig. 22. Failed wall.
1) Analyse the wall stability and explain the observed failures. (2) Recommend a repair method by tie rods (2 rows) anchored in rock. The backfill material properties were: ^=34°, yh = 19kN/m3, y' = 3 llkN/m . The backfill behind the wall was replaced at an angle jS = 34° with the horizontal. Assume that the reinforced concrete unit-weight was 23kN/m3 and the angle of friction between concrete and rock was 8 — 30°. Solution (1) Analysis of wall stability Assumptions used for calculation Because of the poor quality of the drainage material, the calculation must consider the hydrostatic pressure (assuming that the water level is at the top of the wall).
25 m 2 ) Thickness E= 18, 22 or 26cm i Fig. 32. The reinforcing strips are smooth and made of galvanized steel, 60 x 3 and 80 x 3 mm. For considering corrosion loss, assume thickness of the strips to be 2 mm. 6 x 10s kPa. To calculate the strip spacings, assume the gross cross-section, taking into account that experimental results on models and full-size test walls indicate that the maximum tension in the strips occurs some distance away from the skin. 4. 30 and its unit weight y2 = 20 kN/m3. Determine: (1) The stresses imposed on the foundation soils by the rein forced-earth mass.