Page - 857 - in Book of Full Papers - Symposium Hydro Engineering

REFERENCES [1] MOHAMMADIAN A. et al, CMDs on low modulus foundations - four first experiences in Iran. 85th Annual Meeting of International Commission on Large Dams, 2017. [2] JAPAN DAM ENGINEERING CENTRE, Engineering Manual for Construction and Quality Control of Trapezoidal CSG Dams, 2007. [3] BELL F.G. (Editor), Engineering in Rock Masses, B-Heinemann, 1994, P232. [4] GALERA J, ALVAREZ M., BIENIAWSKI Z., Evaluation of deformation modulus of rock masses using RMR, 2007. [5] BIENIAWSKY Z. T., Engineering Rock Mass Classifications, John Wiley, New York, 1989. [6] MAZLUMI A., GHAEMIAN M., NOORZAD A., Nonlinear Seismic Analysis of RCC Dam Considering Orthotropic Behavior of Layers, International Symposium of ICOLD, 2012. SUMMARY Cemented material Dam (CMD) on weak foundation has more challenges than other types of gravity ones. Variations in rock properties in the foundation, natural aggregates and simplicity in construction which results in more inhomogeneities in dam body will cause a lot of uncertainties which is a paradox in design. Performance Based Design using a probabilistic approach may be a proper way in this type of dam. Using this probabilistic method, uncertainties on estimating the modulus of deformation of foundation is considered, variations in aggregate grading’s has been reduced by finding the optimum sieve number of fractions, the layered behavior of dam body which is an inherent specification of CMD’s, the relationship between modulus of deformation of Hardfill versus compressive strength and finally finding an optimum characteristic compression of dam body is well defined by a new proposed method in this paper. KEYWORDS MATHEMATICAL MODEL, AGGREGATE, FOUNDATION, ROLLER COMPACTED CONCRETE 857