SHEET PILE FOR CURVED SHELL CELLS OF HYDRAULIC STRUCTURES AND CURVED SHELL CELL OF HYDRAULIC STRUCTURES Russian patent published in 2023 - IPC E02D5/28 E02D5/04 E02B3/06 

FIELD: hydraulic engineering.

SUBSTANCE: used in the construction of berths, locks, dams, dock facilities, mooring bollards, bridge supports; erection of retaining walls; bank protection, water intake and drainage facilities; treatment facilities, collectors, tunnels, underground structures, annular closed and open structures, fences; when arranging pits, slopes, foundations, trench walls. A sheet pile for curved shell cells of hydraulic structures includes a sheet pile body and locking elements located on the end parts of the sheet pile body, while according to the invention the sheet pile is made with a width at the centers of the interlock connections B = 1000÷1500 mm, and the body of the tongue is U-shaped with an angle of bending of the end sections relative to the middle part of the body of the tongue byβ = (0.5÷3.5)×α_max, where α_max is the maximum angle of rotation of the sheet pile in the interlock. The width of the bend of the end sections of the tongue is B_bend = (0.25÷0.5)× B. The body of the tongue can be made integral with the locking elements or the connection can be made by welding. The curvilinear shell cell of the hydraulic structure is made by sequential articulation of the locking elements of the above sheet piles among themselves. The radius of curvature of the shell cell is selected from the ratio 0.5B × sec(0.5ϕ1)≥ R≥ 0.5B× sec(0.5ϕ2), where R is the radius of curvature of the shell cell along the centers of the interlocks, ϕ1, ϕ2 are the corners of the circular sector of the sheet pile, while ϕ1 = 2× (β -0.5α_max),ϕ 2 = 2× (β+0.5α_max).

EFFECT: ability to form a reliable annular sheet pile wall or a wall with a bend while reducing the weight of the structure, simplifying the installation of the sheet pile wall and connecting its locking elements, as well as reducing the need to use locking elements.

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