Abstract

A reservoir is an artificial lake where water is stored. The dam controls the amount of water that flows out of the reservoir. Spillways are structures constructed to provide safe release of floodwater from a dam to a downstream side of the river. The Radial gate is a type of arm gate used in dams and canal locks to control water flow. Present work has carried out a methodology to develop an optimal design of Radial gate with alternative steel sections and different grades of steel. To develop an optimal design of gate three different grades of steel ASTM A36, ASTM A992 and ASTM A653 were analysed and ASTM A653 grade of steel used for skin plate of radial gate.In order to reduce the weight of gate, two design of radial gate one with conventional I section and another with combination of unconventional rectangular hollow section and conventional I section prepared and analysed using a design and analysis software SAP2000. The efforts are made to reduce the weight of gate. After the analysis of gate, it is seen that the weight of gate is reduced by 23% In addition; optimization of gate can be done by using both conventional and unconventional design sections for various members of the radial gate.

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