Girders of Hydraulic Gates Optimal Design

Metal gates of hydraulic structures are supplied with load bearing girders. Girders, crossbeams and gates require much steel when being manufactured. Girders of hydraulic gates rational design leads to considerable cost savings. The paper describes steel hydraulic girders optimal design. Steel hydraulic girders optimal design is based on the strength theory introduced by M. Huber, R. Mises, H. Hencky and on the theory of mirror functions. With the help of out-form volume we can either calculate the optimal form for a girder with variable cross-section or the optimal height for a girder of uniform cross-section. The paper introduces hydraulic girders calculations according to the authors' methodology.