SHEET PILE WALL FOR HYDRAULIC STRUCTURES AND METHOD FOR ITS ERECTION Russian patent published in 2023 - IPC E02D5/02 E02B3/06 

FIELD: hydraulic engineering.

SUBSTANCE: used in sea and river construction of port facilities, the construction of embankments and berths, bridge supports, retaining walls during bank protection works. The sheet pile wall contains piles in the form of cylindrical pipes sunk into the ground, intermediate elements consisting of two parts, and locking elements connecting them to each other and to the piles into a single wall along the construction line. Parts of locking elements on cylindrical pipes and end parts of intermediate elements are located at angles α=0-60° to the O-O axis, connecting the centers of the piles with each other, with the possibility of mutual displacement by an angleϕ, and the locking elements connecting the parts of the intermediate elements to each other are made with the possibility of displacement between themselves by an angle of 2ϕ. The distance between the parts of the locking elements on adjacent piles is 0.98-1.0 of the distance between the parts of the locking elements on the end parts of the intermediate element at their same angular positionα on piles and end parts of the intermediate element. The middle parts of the intermediate elements (from the bend of the intermediate element to the lock element) are in the same plane. The geometric shape of the intermediate elements connecting adjacent piles to each other corresponds to the formula: K=2H_pr/B_pr, where K is the shape factor of the profile of the intermediate element, numerically equal to 0.35-1.2, H_pr is the height (nominal) of the intermediate element, mm, V_pr is the width (nominal) of the intermediate element, mm. Intermediate elements can be located on the front or inner side of the wall, and simultaneously on the inner and front sides of the wall. Intermediate elements are made in the form of two symmetrically arranged L-shaped or Z-shaped parts. The method for erecting the above sheet pile wall for hydraulic structures includes immersing piles in the form of cylindrical pipes with welded locking elements into the ground and subsequent installation and immersion of intermediate elements between the piles to combine them into a single sheet pile wall, while according to the invention, the distance between the cylindrical piles is controlled by welded parts of the lock elements to them, and before mounting the intermediate elements, the distance between the parts of the lock elements located on their end parts is controlled and corrected by angular displacement of the parts of the intermediate element relative to each other around the lock elements connecting them to each other.

EFFECT: increased load capacity and reliability of installation and operation of the sheet pile wall, simplification of construction and installation works with separate installation of piles and intermediate elements with compensation for changes in the distance between parts of the locking elements on piles and the possibility of using the proposed technical solution for severe ice conditions in the Far North.

8 cl, 4 dwg, 1 tbl