Optimum Design Program for Shape of Arch Dams
نویسندگان
چکیده
This paper presents an applicable and practical computer program(ODPSAD) and suggests a new algorithm for geometry of concrete arch dams. In this program shape optimization of arch dams for static and dynamic loads and enhancement of its seismic behaviour is carried out. abutment excavation and dam body volumes have been considered as the objective function and in order to increase the consistency with practical conditions, a great number of geometrical and behavioural constraints have been included in the mathematical model. Three loading cases i.e., gravity loading, static loading and dynamic loading have been accounted for analysis. In seismic loading, longitudinal component of the OBE spectrum have been considered. For finite element analysis the base of program FEAPpv is used and extended for this purpose .Sequential nonlinear approximation(SQP) procedure is used for the optimization analysis. Results show that the modification and optimization of shape can be very versatile and professional leading to considerable reduction in the dam body volume and costs in regular cases.
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