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METHODS FOR INCREASING THE STIFFNESS OF A GRID FOUNDATION
Abstract
The object of this paper is represented by the analysis of a grid foundation for a light reinforced concrete structure. The need for this kind of analysis was imposed by the foundation ground conditions. In the case of sites presenting differentiate foundation ground conditions in the perimeter of a construction it is necessary a detailed analysis of the foundation conditions of the site and also, the behavior of the ensemble of the entire structure. So, is stent an adjustment of the foundation solution to the siteпїЅs conditions and also, carrying out a complex calculus in which it must be taken into account the co-operation between structure-foundation-foundation ground. The site was investigated by borings and dynamic cone penetration tests. The site investigation program emphasized that the foundation ground consists partially of a non-homogeneous filling composed by a mixture of unconsolidated soils and materials resulted from demolition of a pre-existing construction. In this paper are analyzed and compared more variants of grid foundation systems conceived as being composed by main beams and secondary beams. For this infrastructure were calculated the bending moments, the shear forces and the pressures transmitted to the foundation ground. From technical and economic efficiency point of view, the analyzed foundation solutions were compared for different 4 (four) variants.
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References5
Bowles J.E., Foundation Analysis Design, McGraw-Hill Book Co., 1988.
Das B.M., Principles of Foundation Engineering, PWS-KENT Publishing Company, 1990.
Normativ privind proiectarea fundaţiilor de suprafaţă, Indicativ NP 112-2014.
Enache F., Singeorzan B., Miron F.C., Scarlat C.A., Improving Weak Soils Bearing Capacity by Using Gravel Cushion Reinforced with Geosinthetic Materials, Materiale Plastice, Volume: 53 Issue: 1, 2016, pp. 52-57.
Roman L., Roman O., Geosynthetic Reinforced Retaining Walls with Vegetated Facings, 12th International Multidisciplinary Scientific Geoconference, SGEM 2012, VOL. II, pp. 111-115, Bulgaria, 2012
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