Abstract
MACACARI, M.F. (2001) – Variation of the bearing capacity with suction and depth in plate load tests in collapsible soil. Sao Carlos, 2001. 96p. Dissertacao (Mestrado) Escola de Engenharia de Sao Carlos, Universidade de Sao Paulo. This work presents the results of plate load tests with measurements of soil matric suction and moisture content, carried out in the depths of 1,5 , 4,0 , 6,0 and 8,0 m at the Experimental Field of Foundations of School of Engineering of Sao Carlos, whose soil profile is representative of the middle-west region of the State of Sao Paulo. For each depth tests with previous flooding of the land, representing the condition of null matric suction. Were also carried out It was verified that the depth and the average matric suction in the soil under the plate influence significantly in the load capacity of the soil-plate system. The stress settlement curve obtained does not characterize clear rupture nor indicate the model of physical rupture, demanding the adoption of approaches of conventional rupture. Due to the similarity of those curves with the e x log curves from consolidation tests and, to put that, PACHECO SILVA (1970) method was used as an approach to conventional rupture, being compared with values of the preconsolidation stress obtained in laboratory. It was also used settlement of 25 mm to obtain the corresponding conventional rupture. Key-words: load capacity; plate load test; unsatured soils; collapsible soils
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