The paper is concerned with the bearing strength analysis of a surface footing resting on weak and jointed layered rock mass of limited and varying thickness. Analysis of stability (mainly bearing strength and settlement) under a footing on regularly bedded, jointed and layered rock mass is made using physical simulation techniques. A simpler method to estimate bearing strength of both intact and jointed rock mass under circular and square footings is proposed. The influence of various physico-mechanical properties and superimposed joint and weak layers, on the bearing strength is examined through plate loading test on model rock mass representing intact, jointed and layered rock mass behavior model. The result indicates that bearing strength is significantly related to the location and orientation of joints and the layers present in the model rock mass. Results of model plate bearing test further indicate that moisture content (MC), the ratio of plate width to the rock mass thickness (d/t) and the angle of internal friction (Φ) are the most critical parameters influencing the bearing strength of rock foundation.
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