Investigation on active isolation of machine foundations by open trenches

Article Abstract:

An annular trench installed in the vicinity of a rigid foundation subjected to active isolation was examined to determine the efficiency of open trenches in isolating ground vibration due to machine foundations. The analysis also suggests a design formula which could be useful in estimating wave barriers' efficiency. While it may be true that open trenches prove to be effective in reducing ground vibration in the area behind the wave barrier, the area in front of such barrier should also be considered in the wave barrier design.

Analysis, Usage, Control, Excavation, Vibration, Vibration (Physics), Wave propagation

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Stability of uniformly reinforced slopes

Article Abstract:

Four evaluations of a study on the stability of uniformly reinforced slopes are presented. One raises questions about the definition of pore water pressure used in deriving the analytical expression for computing the reinforcement needed to prevent the collapse of slopes. Another argues that the modeling of the soil as a 3D continuum can be applied to various reinforcement patterns regardless of the distribution of inclusions in the soil masss.

Research, Slopes (Physical geography), Slopes (Landforms), Structural stability

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Large model spread footing load tests on geosynthetic reinforced soil foundations

Article Abstract:

Authors Michael T. Adams and James G. Collin have provided an interesting discussion of reinforced soil foundation as an innovative technique to improving the bearing capacity of shallow footings. Their paper, however, has raised some questions pertaining to the terminology used in the discussion and the nature of the tests. For example, the soil classification of the sand used in the tests should be termed 'unified' rather than 'uniform.'

Criticism and interpretation, Speeches, lectures and essays, Soil mechanics, Earthwork, Adams, Michael T., Collin, James G.

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