RU2776903C1 - Sheet pile - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to elements of sheet pile wall, namely to sheet piles intended for use in hydraulic engineering, road, underground and civil construction. Sheet pile includes two flanges located symmetrically relative to the straight horizontal axis of the sheet pile wall, connecting flanges wall arranged in extreme part of sheet pile, four locking devices arranged in extreme parts of sheet pile from below and from above. PVC plastic is used for fabrication of sheet pile. Locking devices are located in inner volume of sheet pile, middle part of connecting wall is made with U-shaped profile in section, oriented with open cavity to inner volume of pile, U-shaped enclosing profile of the lock device is formed from the side part of the wall and the end part of the shelf bent inside the pile. Open cavity of the profile is oriented to the middle part of the wall, and the U-shaped male profile of the lock device is located on the other side of the sheet pile and is formed by the end part of the flange bent inside the volume of the pile. Profile cavity is open on the outer side of the pile to accommodate the enclosing profile of the attached pile. Size of the U-shaped male profile is selected so that when two piles are connected, the U-shaped male profile contacts the middle part of the connecting wall of the connected pile, and the flanges of the two piles are located at the same level.

EFFECT: technical result consists in providing increased bearing capacity of sheet pile wall, ensuring wall tightness, reducing labor costs.

1 cl, 6 dwg

Description

The invention relates to elements of sheet piles, namely sheet piles, intended for use in hydraulic, road, underground, civil engineering, if necessary, create temporary and permanent enclosing structures (sheet piles), namely: berthing facilities in sea and river ports; walls of dry docks and locks; bank protection walls on rivers and reservoirs; fencing of artificial islands during the construction of bridge abutments; walls of tunnels and other underground structures erected in an open way; temporary fencing of pits during the construction of foundations, for the manufacture of fencing for children's and sports grounds, swimming pools, fire reservoirs, etc.

Known sheet pile (patent RU No. 115372, IPC E02D 5/02, publ. 04/27/2012), which is a plastic sheet pile, consisting of a body with side edges, one of which is made in the form of an enclosing U-shaped locking element shape (sheet piling), and the second - in the form of a male locking element of a T-shaped shape (sheet piling). The male and female shaped side edges provide a connection to the corresponding female and male shaped side edge of a similar sheet pile. A solid wall of said sheet piles forms a sheet piling.

The disadvantage of such a pile is the soil and water permeability of the connection due to the lack of tightness of the structure, caused by the presence of a gap between the sheet pile and the sheet pile. Also, the disadvantages of this design include the fact that the profile of the assembled wall is open and there is no possibility of reinforcing the finished wall with metal and pouring concrete or other mortar to increase its strength.

Sheet piles are known that are connected to a sheet pile wall using a lock with a metal sealing element (patent RU No. 2368723, IPC E02B 3/06, E02D 5/08. publ. 27.09.2009). The design of the lock makes it possible to improve the assembly quality of the sheet pile wall, as well as its soil and water resistance.

The disadvantage of the known tongue and groove connection is the complexity of manufacturing.

Known retaining wall sealed with mortar based on concrete, cement or bentonite (application RU No. 2001128073, IPC E02D 5/02, E02D 5/20, E02D 29/02, publ. snacks, and the way it is assembled is too complicated.

A sheet pile is known (patent RU No. 55383, IPC E02D 5/08, publ. 08/10/2006), which is a trunk of a circular cross section and locks in the form of a curved corner profile, containing two shelves and two edges welded to the trunk one of its edges and forming a gap of variable width between the shelves. In said sheet pile, the inner surface of the lock is made with a layer of impervious coating from a material with hydrophilic properties, and these hydrophilic properties of the coating enable the layer of impervious coating to increase in volume when interacting with water and fill the internal space of the interlock gap.

However, the use of additional hydrophilic coatings complicates and increases the cost of the design.

One of the less expensive ways to ensure soil and water tightness of sheet pile walls is the creation of structures in which tightness is ensured by the structural elements of the interlocking of sheet piles.

A number of piles made of metal are known. The disadvantage of such structures is metal corrosion, which leads to a decrease in the bearing capacity of the sheet pile wall, a decrease in resistance to dynamic loads, and a loss of architectural attractiveness. With strong corrosion, especially in salt water conditions, highly oxidized metal elements move away from the base metal of the pile in layers and fall into the reservoir, which reduces the level of environmental safety of the reservoir. Metal piles do not have a long service life compared to polymer piles. The application of anti-corrosion coatings on metal can eliminate the problems of corrosion of metal piles, but this significantly increases the cost of piles.

The technical solution of the sheet pile wall element (RU No. 114970, IPC E02D 5/02, published on 20.04.2012), including at least one sheet pile with flanges and a wall, as well as with locking devices, was chosen as the closest analogue. This pile includes two shelves located symmetrically about the straight horizontal axis of the sheet pile wall, which are connected with a permanent connection through a wall that is not located in the center of the shelves, while the sheet pile has four locking devices attached to the sheet pile with a permanent connection, which are placed in the extreme areas of the sheet pile: from the top on the left and right side, from the bottom on the left pi on the right side.

The disadvantage of such a pile is the lock, which is made separately from the pile and then attached to the pile, in addition, it is structurally made outside the pile itself and the load on the pile passes through the lock and tries to tear it off the pile. Thus, if mortar is poured into the pile, this will not increase the bearing capacity of the lock in any way, and the lock is the weakest element of the pile. The described sheet pile wall is non-separable, it cannot be removed and the piles reused. In addition, such a sheet pile wall requires a lot of labor and energy for production and assembly, and does not ensure the rigidity of the connection in the interlocks.

The invention solves the problem of creating a sheet pile, which allows, with a reduction in labor and energy costs, to build a hermetic prefabricated / collapsible sheet pile wall with a rigid connection of piles, by using PVC plastic as a material for making sheet piles, changing the design and location of locking devices on a sheet pile and use of a connecting wall with a modified profile.

To obtain the required technical result in a sheet pile, which includes two shelves located symmetrically relative to the straight horizontal axis of the sheet pile wall, a wall connecting the shelves, located in the extreme part of the sheet pile, four locking devices located in the extreme parts of the sheet pile from below and above, it is proposed for manufacturing PVC plastic is used for the sheet pile, and the locking devices are located in the internal volume of the sheet pile, the middle part of the connecting wall is proposed to be made with a U-shaped profile in section, oriented by the open cavity to the internal volume of the pile, it is proposed to form the U-shaped female profile of the locking device from the side part of the wall and the end part of the flange bent inside the volume of the pile, while orienting the open profile cavity to the middle part of the wall, and it is proposed to place the U-shaped male profile of the locking device on the other side of the sheet pile and form the end part of the floor pi, bent inside the volume of the pile, the profile cavity is proposed to be opened from the outside of the pile, in order to accommodate the female profile of the attached pile, the size of the U-shaped male profile is proposed to be chosen so that when connecting two piles, the U-shaped male profile is in contact with the middle part of the connecting wall of the attached piles, and the shelves of two piles are located on the same level.

The essence of the invention is illustrated by graphic materials, where:

in fig. 1. - proposed sheet pile with interlock elements with a connecting wall;

in fig. 2 - the same, with an enlarged middle part of the connecting wall;

in fig. 3 - connection of two sheet piles;

in fig. 4 - the same, with an enlarged middle part of the connecting wall;

in fig. 5 - rotary element of the sheet pile wall;

in fig. 6 - a rotary element of a sheet pile wall with an enlarged middle part of the connecting wall.

The graphics show:

1 - shelf;

2 - part of the middle connecting wall;

3 - part of the side connecting wall;

4 - profile U-shaped covering;

5 - U-shaped male profile;

6 - line of contact of the male profile with the middle part of the connecting wall;

7 - lines of contact of the female and male profiles;

8 - locking device.

The inventive sheet pile consists of a shelf 1 in the amount of two pieces, located symmetrically relative to the straight horizontal axis of the sheet pile wall, a wall connecting the shelves 2, located in the extreme part of the sheet pile, four locking devices 8, located in the extreme parts of the sheet pile from below and above.

Locking devices 8 are located in the internal volume of the sheet pile, the middle part of the connecting wall 2 is made with a U-shaped profile in cross section, oriented by the open cavity to the internal volume of the pile.

The U-shaped female profile 4 of the locking device 8 is formed from the lateral part of the wall 3 and the end part of the flange bent inward into the volume of the pile, while the open cavity of the profile is oriented towards the middle part of the wall, and the U-shaped male profile 5 of the locking device 8 is located on the other side sheet pile and is formed by the end part of the shelf, bent inside the volume of the pile, moreover, the profile cavity is open on the outside of the pile, to accommodate the female profile 4 of the attached pile, while the size of the U-shaped male profile 5 is selected so that when connecting two piles P -shaped covered 5 profile is in contact with the middle part of the connecting wall 2 of the attached pile, and the shelves of the two piles are located on the same level.

Contact profile 4 U-shaped female and profile 5 U-shaped male occurs along the line 7 of the contact of the female and male profiles.

Shelf 1 in the amount of 2 pieces, part 2 of the middle connecting wall, part 3 of the side connecting wall, 4 U-shaped female profiles and 5 U-shaped male profiles are made in one piece and do not require any connection to each other, welding or gluing.

The design of the locking devices 8 provides for the transfer of load from the profile 4 of the U-shaped female and the profile 5 of the U-shaped male through the contact line 6 of the male profile with the middle part of the connecting wall to part 2 of the middle connecting one, which provides the sheet pile wall with increased rigidity, t.to. the load applied to the locking device 8 of the pile is completely transferred to the body of the pile, and the pile can carry a many times greater load than the locking device.

The design of the locking devices 8 ensures complete tightness of the wall without the use of additional waterproofing, while the use of PVC material ensures low friction in the lock, and, consequently, simplicity, speed, low labor and energy costs in the manufacture and assembly of the wall from individual piles, and if necessary, it is possible quick dismantling of the pile wall and its reuse.

PVC material does not rust, therefore, the pile wall design will be durable, while the PVC wall will reliably protect the steel and mortar, such as concrete inside, ensuring the long-term performance of the pile wall, especially when used in salt water.

The assembled sheet pile wall of the proposed design visually represents a smooth flat surface, which ensures its architectural appeal.

PVC pile is resistant to aggressive environments and specifically to oil products.

The piles are lightweight and can be carried to the construction site by hand. PVC is easy to cut: if necessary, the pile can be easily cut at the construction site, which ensures ease of installation and does not require complex and expensive equipment.

The pile wall can be installed as a new wall, or you can complement an old wall by installing a new one in front of it.

The assembly of the pile wall is carried out element by element by alternately driving the piles into the ground, or the piles are driven in groups (shields) interconnected by two or more.

After installing sheet piles, to increase the bearing capacity of the wall, the soil plug formed inside the mold and / or residual water is removed from the piles, then steel reinforcement is placed inside each mold and poured with mortar, for example, concrete.

The proposed pile design allows fabrication of a sheet pile wall with varying strengths of steel reinforcement and varying strengths of concrete or other mortar depending on load requirements and soil conditions. This also allows the use of this type of PVC pile on stony soils. the wall will be rigidly fixed and fixed with steel reinforcement, which in turn will act as an anchor.

The proposed design makes it easy to build corners and bends of the sheet pile wall. In this case, it is possible to form large angles. Corners and bends can be obtained with pivot elements (radial parts with different preset angles) or with limited flex double interlocks on all parts of PVC sheet piles.

If necessary, in conditions where increased structural rigidity is required, additional elements can be added to the pile profile: stiffeners and spacers between horizontal or vertical pile flanges. These elements can be made integral with the pile structure, or they can be separate structural elements that are inserted into the pile body before or after the installation of the pile wall.

Claims (1)

A sheet pile comprising two shelves located symmetrically with respect to the straight horizontal axis of the sheet pile wall, a wall connecting the shelves, located in the extreme part of the sheet pile, four locking devices located in the extreme parts of the sheet pile from below and above, characterized in that for the manufacture of the sheet pile, PVC plastic, locking devices are located in the internal volume of the sheet pile, the middle part of the connecting wall is made with a U-shaped profile in section, oriented by an open cavity to the internal volume of the pile, the U-shaped female profile of the locking device is formed from the side part of the wall and the pile volume bent inward the end part of the flange, while the open profile cavity is oriented to the middle part of the wall, and the U-shaped male profile of the locking device is located on the other side of the sheet pile and is formed by the end part of the flange, bent inside the pile volume, and the profile cavity is open from the outside of the pile , to accommodate the female profile of the attached pile, while the size of the U-shaped male profile is selected so that when two piles are connected, the U-shaped male profile contacts the middle part of the connecting wall of the attached pile, and the flanges of the two piles are located on the same level.

Images