MARINE HORIZONTAL EXTERNAL STRUCTURE Russian patent published in 2003 - IPC

FIELD: water- development works; horizontal marine structures for development of continental shelves. SUBSTANCE: structure includes plating strengthened by main frames and web frames; angle of inclination of this structure does not exceed angle of inclination of tangent in specific section of plates of plating to surface of plates having residual technological deformation at maximum deformation specified by appropriate technical documentation; magnitude of inclination Δ is maximum for each kind of deformation indicated below: at bight-shaped- -sinusoidal profile -at ribbing-cosinusoidal profile - at house-shaped-linear dependence where z′ is first derivative of function of sagging of deformed surface of plate in specific section in function of (x); z is sagging of surface of plate in specific section in function of (x); f₁ is maximum magnitudes of sagging of surface of plate equal to those specified in appropriate service documentation for manufacture of metalwork; x is present coordinate; l is length of span of plate between stiffeners of main framing system. EFFECT: enhanced reliability and maintainability; reduced usage of materials. 5 dwg