RU2802580C1 - Sheet pile wall for hydraulic structures and method for its erection - Google Patents

Abstract

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

Description

The invention relates to hydraulic engineering and construction and can be used in marine and river construction of port facilities, construction of embankments and berths, bridge supports, retaining walls during bank protection works.

A sheet pile wall is known (Patent RU 161409U1, IPC B02B 3/06, published on June 20, 2016). The sheet pile wall includes piles in the form of cylindrical pipes and locking joints, each of which consists of a pair of profiles welded to the pipes, with one of profiles is a protrusion, and the second welded profile is made in the form of a gripper having a locking cavity in which the ridge of the tongue and groove protrusion is placed, and the locking cavity is formed by two mirror-symmetrical elements in the form of hooks. The locking elements on the piles are located diametrically along

The disadvantage of the known technical solution is the high metal consumption of the sheet piling wall and the limited ability to work in heavy ice conditions in the Far North due to significant thrust loads acting on the piles from ice ridges, leading to breakage of the locking connections and damage to the integrity of the sheet piling wall. Deviation of piles from the design position by an insignificant amount during installation and operation also leads to significant loads on the interlocking joints, exceeding the calculated ones.

A sheet piling wall is known for the construction of berths, embankments, canals, retaining walls during bank protection works and other hydraulic structures, containing piles in the form of metal pipes immersed in the ground, and locking elements connecting them into a single wall along the construction line. As in the previous technical solution, the centers of the piles are located on the neutral (longitudinal) line dividing the section of the sheet piling wall into two equilibrium parts (RF Patent No. 2293158, IPC E02B 3/06, E02D 5/08, E02D 5/12, publ. 10.02. 2007).

The disadvantage of the known sheet piling wall, as in the previous known technical solution, is the high metal consumption of the sheet piling wall and the limited ability to work in heavy ice conditions in the Far North due to significant thrust loads acting on the piles from ice ridges, leading to breakage of the locking connections and failure integrity of the sheet pile wall. Deviation of piles from the design position by an insignificant amount during installation and operation also leads to significant loads on the interlocking joints, exceeding the calculated ones.

A sheet pile wall for hydraulic structures is known (ESC Group General Cataloque, 2022 Edition, page 53; https://www.escpile.com/general-catalogue). The sheet pile wall, according to a known technical solution, contains piles in the form of cylindrical pipes, intermediate sheet pile elements of a U-shaped section, while the locking elements located on the bottom of the intermediate elements and forming cylindrical pipes are located on a line connecting the centers of the pipes to each other.

The disadvantage of the known technical solution is the low load capacity and high metal consumption of the sheet piling wall, as well as the high level of thrust loads from ice hummocks in operating conditions in the Far North acting on pipe piles

A sheet piling wall is known that is closest to the claimed technical solution (Patent RU 2382846C1, IPC B02B 3/06, B02D 5/20, published 06/27/2010). The sheet pile wall according to the invention is intended for construction on rocky soil and contains piles installed in a row and concreted in cups-clamps pre-drilled into the rock foundation, and closing thin-walled arched intermediate elements placed between them. Each pile is equipped with two tongue-and-groove locks, in which the thickened side edges of the arched elements are placed, which are installed resting directly on the rocky soil, without deepening. Sheet piling locks are fixed on piles in planes passing through the axis of the pile at angles of plus α and minus α, respectively, to the plane perpendicular to the plane of the retaining wall. Angle α is selected from 10 to 55 degrees, preferably equal to 45 degrees. The retaining wall also contains an anchor device, including anchor rods connected to piles, and anchor supports, which are preferably concreted into the rock foundation. In this case, the intermediate and locking elements are located on the backfill side of the sheet pile wall.

The disadvantage of the known technical solution is the high metal consumption of the sheet piling wall and the limited ability to work in heavy ice conditions in the Far North due to significant thrust loads acting on the piles from ice ridges, leading to breakage of the locking connections and damage to the integrity of the sheet piling wall. The sheet pile wall only takes the load from the backfill and is transmitted through intermediate arched elements to the piles. The use of thin-walled intermediate elements in a sheet pile wall leads to a decrease in the corrosion resistance of the wall.

A sheet piling wall is known that is closest to the claimed technical solution (Patent KR20120127357A, IPC E02D 005/02, E02D 005/04, publ. November 21, 2012). The sheet pile wall contains piles in the form of cylindrical pipes immersed in the ground, intermediate elements consisting of two Z-shaped parts and locking elements connecting them to each other and to the piles into a single wall along the construction line. The locking elements on the cylindrical pipes and the end parts of the intermediate elements are located on the line connecting the centers of adjacent piles to each other.

The disadvantage of the known technical solution is the high metal consumption of the intermediate elements and the low load capacity of the sheet piling wall due to the location of the intermediate elements close to the neutral line of the wall, as well as the high level of thrust loads from ice hummocks acting on pipe piles under operating conditions in the Far North.

The purpose (technical result) of the present invention is to increase the load capacity and reliability of installation and operation of the sheet piling wall, to simplify construction and installation work 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 claimed technical solution for severe ice conditions in the Far North.

This goal is achieved by the fact that the sheet piling wall contains piles in the form of cylindrical pipes immersed in 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 the locking elements on cylindrical pipes and the end parts of the 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 angle ϕ, and the locking elements connecting the parts of the intermediate elements with each other made with the possibility of displacement between themselves by an angle of 2ϕ, while 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 with their identical angular position α on the piles and the end parts of the intermediate element, while the middle parts of the intermediate elements (from the bend of the intermediate element to the locking element 7, 16) 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 profile shape coefficient of the intermediate element, numerically equal to 0.35 - 1.2,

H _pr - height (nominal) of the intermediate element, mm,

In _pr - width (nominal) of the intermediate element, mm.

Intermediate elements can be located on the front or inner side of the wall, or simultaneously on the inner and front sides of the wall.

The intermediate elements are made in the form of two symmetrically located L-shaped or Z-shaped parts.

Also, the technical result is achieved by the fact that in the method of constructing a sheet piling wall for hydraulic structures, including 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 piling wall, according to the invention, the distance between cylindrical piles are controlled by the parts of the locking elements welded to them, and before installing the intermediate elements, the distance between the parts of the locking elements located at their end parts is controlled and adjusted by angular movement of the parts of the intermediate element relative to each other around the locking elements connecting them to each other.

The technical essence of the utility model is illustrated by drawings (Fig. 1 - 4), which show:

Fig. 1 - fragment of a sheet piling wall with intermediate elements consisting of two L-shaped parts;

Fig. 2 - intermediate element, consisting of two L-shaped parts;

Fig. 3 - fragment of a sheet piling wall with intermediate elements consisting of two Z-shaped parts;

Fig. 4 - intermediate element, consisting of two Z-shaped parts.

1, 2, 10, 11 - piles in the form of cylindrical pipes,

3, 4, 7, 14, 15, 16 - locking elements,

5, 6 - parts of (L-shaped) intermediate elements,

8, 9 - end parts of (L-shaped) intermediate elements,

12, 13 - parts (Z-shaped) of intermediate elements,

17, 18 - end parts of (Z-shaped) intermediate elements

α is the angle between the O-O axis of the piles and the locking elements located on cylindrical pipes,

ϕ - angle of displacement of parts (L-shaped) of intermediate elements,

β - the angle between the line connecting the locking element adjacent to the pile and the locking element between parts of the intermediate element and the O-O line connecting the centers of adjacent piles to each other and determined by the formula:

β=arctg(2H _pr /B _pr ).

The sheet pile wall (Fig. 1, Fig. 2) contains piles in the form of cylindrical pipes 1, 2 with a diameter of D _tr , immersed in the ground, intermediate elements with a height of _H and a width _{of B} , consisting of two L-shaped parts 5, 6 and locking elements 3, 4, 7, connecting them with each other and with piles 1, 2 into a single wall with a pitch T along the construction line. Parts of the locking elements 3, 4 on the cylindrical pipes 1, 2 and the end parts 8, 9 of the intermediate elements are located at angles α = 0 - 60° to the axis connecting the centers O-O of piles 1, 2 with each other, with the possibility of mutual displacement by an angle ϕ, and the locking elements 7 connecting the parts 5, 6 of the intermediate elements to each other are made with the possibility of shifting between themselves by an angle of 2ϕ, while the distance Btr between the parts of the locking elements 3, 4 on adjacent piles 1, 2 is 0.978 - 1.0 distance between the parts of the locking elements 3, 4 on the end parts 8, 9 of the intermediate element at their same angular position α on the piles 1, 2 and the end parts 8, 9 of the intermediate element, while the middle parts of the intermediate elements 5, 6 are in the same plane.

The geometric shape of the intermediate elements connecting adjacent piles to each other corresponds to the formula: K = 2H _in /B _in ,

where K is the profile shape coefficient of the intermediate element, numerically equal to 0.35 - 1.2,

H _pr - height (nominal) of the intermediate element, mm,

In _pr - width (nominal) of the intermediate element, mm.

The sheet pile wall (Fig. 3, Fig. 4) contains piles in the form of cylindrical pipes 10, 11 with a diameter of D _tr , immersed in the ground, intermediate elements with a height of _H and a width of _B , consisting of two Z-shaped parts 12, 13 and locking elements 14, 15, 16, connecting them with each other and with piles 10, 11 into a single wall with a pitch T along the construction line. Parts of the locking elements 14, 15 on the cylindrical pipes 10, 11 and the end parts 17, 18 of the intermediate elements are located at angles α = 0 - 60° to the axis connecting the centers O-O of the piles 10, 11 with each other, with the possibility of mutual displacement by an angle ϕ, and the locking elements 16 connecting the parts 12, 13 of the intermediate elements to each other are made with the possibility of shifting between themselves by an angle of 2ϕ, while the distance B _tr between the parts of the locking elements 12, 13 on adjacent piles 10, 11 is 0.978 - 1.0 the distances between the parts of the locking elements 14, 15 on the end parts 16,17 of the intermediate element with their same angular position α on the piles and the end parts 17, 18 of the intermediate element, while the middle parts of the intermediate elements 12, 13 are in the same plane.

Table 1 shows the calculated unit values of C _max(min) - the maximum and minimum width of the intermediate elements.

An analysis of the calculations performed, summarized in Table 1, shows that the maximum and minimum width of the intermediate element depends on the ratio 2H _in /B _in or the angle β and the maximum value of the angular displacement ϕ of the parts of the intermediate elements in the locking elements located on the piles. The use of intermediate elements with a ratio of 2H _in /B _in < 0.35 (β < 20°) is not advisable due to the small range of the maximum and minimum width of the intermediate element and is not advisable with a ratio of 2H _in /B _in > 1.20 (β > 50°) due to reduced stability of parts of the intermediate elements. The use of locking elements with a maximum angular displacement of ϕ < 4° (2ϕ < 8°) is not advisable due to the small range of the maximum and minimum width of the intermediate element and is not advisable for ϕ > 12° (2ϕ > 24°) due to the complexity of creating locking elements elements with an angular displacement of more than 24°. Installation of a sheet piling wall with a distance between the parts of the locking elements on adjacent piles is 0.978 - 1.0 from the distance between the parts of the locking elements on the end parts of the intermediate element with their same angular position α on the piles and the end parts of the intermediate element, ensures uniform deviations of the width from the nominal position.

The construction of a sheet pile wall for hydraulic structures involves driving piles into the ground in the form of cylindrical pipes 1, 2 (Fig. 1) or 10, 11 (Fig. 3) with welded locking elements 3, 4 (Fig. 1) or 14, 15 (Fig. 3) and subsequent installation and immersion of intermediate elements consisting of two L-shaped parts 5, 6 (Fig. 1, 2) or Z-shaped parts 12, 13 (Fig. 3, 4) between the piles to combine them into a single sheet pile wall. The distance _Btr between cylindrical piles 1, 2 or 10, 11 is controlled by the parts of the locking elements 3, 4 or 14, 15 welded to them, and before installing the intermediate elements, the distance _Bpr between the parts of the locking elements 3, 4 or 14, 15 located on the end parts 8, 9 (Fig. 1, 2) or 16, 17 (Fig. 3, 4), by angular movement of the parts 5, 6 or 14, 15 of the intermediate elements relative to each other around the locking elements 7 (Fig. 1, 2) or 16 (Fig. 3, 4), connecting parts 5, 6 or 12, 13 of intermediate elements to each other. When adjusting, the width of the intermediate element can change in the range B _min ≤ B _pr ≤ B _max with a corresponding change in the height of the intermediate element in the range H _max ≥ H _pr ≥ H _min .

The use of intermediate elements made of two parts for a sheet piling wall of piles made of cylindrical pipes allows for preliminary installation of piles and subsequent installation of intermediate elements with width adjustment in accordance with the distance between the locking elements on adjacent piles due to the angular displacement of parts of the intermediate elements relative to each other. The specified technical solution can significantly reduce construction time and increase the reliability of the interlocking connections of the wall and the possibility of using the proposed technical solution for heavy ice conditions in the Far North.

Table 1 ϕ From _Wed β - 2H _pr /B _pr 20°-0.36 30°-0.58 40°-0.84 50°-1.19 4° 0.9976 C _max 1.0230 1.0378 1.0561 1.0807 - - _Cmin 0.9722 0.9573 0.9390 0.9144 8° 0.9903 _Cmax 1.0409 1.0706 1.1071 1.1561 - - _Cmin 0.9396 0.9099 0.8735 0.8244 12° 0.9782 _Cmax 1.0538 1.0982 1.1526 1.2259 - - _Cmin 0.9025 0.8581 0.8037 0.7304

Designations in the table:

In _pr - the nominal width of the intermediate element at the centers of the locking elements;

B _max(min) is the maximum (minimum) width of the intermediate element, determined by the formula: B _max(min) = B _in × C _max(min) ;

β - the angle between the line connecting the locking element adjacent to the pile and the locking element between parts of the intermediate element and the O-O line connecting the centers of adjacent piles to each other and determined by the formula: β=arctg(2H _pr /B _pr );

N _pr - nominal height of the intermediate element;

ϕ - maximum angle of rotation of the intermediate element in the locking element on piles;

C _max(min) - unit maximum (minimum) value of the width of the intermediate element at B _pr = 1.0, determined by the formulas:

C _max = cos(β-ϕ) / cosβ,

C _min = cos(β+ϕ) / cosβ;

Claims (12)

1. A sheet pile wall containing piles in the form of cylindrical pipes immersed in the ground, intermediate elements consisting of two parts, and locking elements connecting them to each other and with the piles into a single wall along the construction line, characterized in that parts of the locking elements are on cylindrical pipes and the end parts of the intermediate elements are located at angles α=0-60° to the O-O axis connecting the centers of the piles to each other, with the possibility of mutual displacement by an angle ϕ, and the locking elements connecting the parts of the intermediate elements to each other are made with the possibility displacement between each other by an angle of 2ϕ, while the distance between the parts of the locking elements on adjacent piles is 0.978-1.0 the distance between the parts of the locking elements on the end parts of the intermediate element with their same angular position α on the piles and the end parts of the intermediate element, while the average parts of the intermediate elements are in the same plane. 2. The wall according to claim 1, characterized in that the geometric shape of the intermediate elements connecting adjacent piles to each other meets the condition: K = 2H _pr / B _pr , where K is the profile shape coefficient of the intermediate element, numerically equal to 0.35-1.2, H _pr - height (nominal) of the intermediate element, In _pr - width (nominal) of the intermediate element. 3. The wall according to claim 1 or 2, characterized in that the intermediate and locking elements are located on the front side of the sheet piling wall. 4. The wall according to claim 1 or 2, characterized in that the intermediate and locking elements are located on the inside of the sheet pile wall. 5. The wall according to claim 1 or 2, characterized in that the intermediate and locking elements are located on the inside and front sides of the sheet piling wall. 6. Wall according to any one of paragraphs. 1-5, characterized in that the intermediate elements are made in the form of two symmetrically located L-shaped parts. 7. Wall according to any one of paragraphs. 1-5, characterized in that the intermediate elements are made in the form of two symmetrically located Z-shaped parts. 8. Method for constructing a sheet piling wall for hydraulic structures according to paragraphs. 1-7, including immersion into the ground of piles in the form of cylindrical pipes with welded locking elements and subsequent installation and immersion of intermediate elements between the piles to combine them into a single sheet pile wall, characterized in that the distance between the cylindrical piles is controlled by parts of the locking elements welded to them , and before installing the intermediate elements, the distance between the parts of the locking elements located at their end parts is monitored and adjusted by angular movement of the parts of the intermediate element relative to each other around the locking elements connecting them to each other.