| 摘要 |
FIELD: construction industry. ^ SUBSTANCE: invention refers to hydraulic structures, dams, and flood protection structure complexes. Floating gate of navigation pass includes vertical closing power-actuated gates with wings the bottom surface of which is zigzag-shaped throughout the width of the wing, which is characterised by inlet horizontal section from the forebay, and outlet section of the surface, which is inclined and deviating upwards and adjacent to forebay at an obtuse angle from afterbay. In lower part of floating gate, in inlet horizontal section thereof there located is a shield, and in inclined outlet section of the bottom surface throughout the wing length there installed is a part that is made with the possibility of positive buoyancy and attached to inclined outlet section of the bottom surface of L length, for example on pylons thus forming uniform section channel of width of at least 1/7L. Lower point of the above part is located, as to the height, at the level of shield lower point, and projects, as to the length, beyond the wing dimension for not more than 1/20L. Pressure face of that part is located at the angle =15-20 to the line connecting lower points of the part and the shield. ^ EFFECT: eliminating vertical natural vibrations of floating gate, which appear during submersion for setting on sill of navigation pass under conditions of water level difference in water area from forebay and afterbay, and reliable installation of floating gate on the sill with a clearance between shield and sill if there is water level differences, and specified weight of floating gate is performed without increase. ^ 2 dwg |
