Abstract
A soil nailing system is a proven effective and economic method used to stabilize earth slopes from the external (factors increasing the shear stress) and internal (factors decreasing material strength) failure causes. The laboratory models with scales of 1:10 are used to study the behavior of nailed soil slope with different soil and building foundation parameters. The models consist of Perspex strips as facing and steel bars as a nailing system to increase the stability of the soil slope. The models of sand beds are formed using an automatic sand raining system. Devices and instruments are installed to monitor the behavior of soil-nailed slope during and after construction. The effect of the soil type, soil slope angle, foundation width and position on the force mobilized in the nail, lateral displacement of the slope, settlement of the foundation and the earth pressure at the slope face, under and behind the soil mass at various foundation pressures, has been observed. It is found that the increase of soil density reduces both slopes facing displacement and building foundation settlements. The slope face displacement and footing settlement will increase with an increase in the width of the foundation and foundation position near the crest of the slope.
Highlights
The failure of slopes leads to extensive social and economic consequences and is accompanied by the degradation of the natural environment
Sahoo et al [8] have carried out the shaking table tests to study the seismic behavior of nailed soil slopes
The laboratory models have been developed by Mahmoud et al [10] to study the effects of surcharge loading and nails characteristics in Nailed Soil Slope behavior
Summary
The failure of slopes leads to extensive social and economic consequences and is accompanied by the degradation of the natural environment. Villalobos et al [14] present the re-assessment stability analysis of soil nailing design and construction in a heavily weathered granite (residual soil) using a limit equilibrium sliding block method (bi-linear failure surface). They found that even after a maximum acceleration of 0.63 g of a stronger earthquake, the nailed wall did not show any damage, probably due to the use of un-drained shear strength parameters. The results for lateral displacement and footing settlement are presented in terms of the percentage of slope height
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