RU82461U1 - HOLLOW LOCK - Google Patents

Abstract

1. A tongue-and-groove lock formed of two elements, one of which is made in the form of an angular profile fixed to the tongue-and-groove forming pile with the longitudinal edge of one of the shelves, while the angular profile is welded to the longitudinal surface of the sheet pile at an acute angle with an inclination towards the edge of the free shelf , characterized in that the sheet pile is made in the form of a closed profile pile from a carbide steel grade, the surface hardness of which is greater than that of the sheet pile lock elements, the sheet pile lock consists of two identical electric elements in the form of standard angular profiles, which are fixed on two adjacent sheet piles parallel to the longitudinal axis of the sheet pile with a gap between the outer mating angle of the shelves of the standard corner profile and the outer surface of the adjacent sheet pile, while one standard profile is mounted on the sheet pile at an angle α between a line passing through the outer mating angle of the shelves of the standard corner profile to the tangent mating point drawn to the outer surface of the sheet pile in its transverse cross section, and the second standard corner profile is mounted on the adjacent sheet pile in the mirror to the first and at the same angle α between the line passing through the outer mating angle of the shelves of the standard corner profile to the tangent mating point drawn to the outer surface of the adjacent sheet piling in its cross section , and the gap h between the outer wall of the first sheet pile and the outer corner of the free flange of a standard corner profile, mounted on an adjacent sheet pile, is calculated by the formula: h = nδ, where δ is the thickness

Description

The utility model relates to the field of construction of structures using metal sheet piling, in particular, to the design of sheet piling locks for sheet piles during the construction of hydraulic structures. In particular, the utility model relates to the construction of hydraulic structures with sheet piles of closed profile in heavy soils.

Known welded lock for connecting tongue-and-groove elements (JP, patent JР11223003, publ. 1999-08-17, IPC ЕВВ 1/64; ЕВВ 1/70; including a holder formed by an angular profile welded to the tongue-and-groove element with the edge of one of the shelves, the second the flange of this angular profile is made with broadening and is simultaneously a connecting cam inserted into the second cage formed by the same angular profile welded to another sheet pile element, and the free flange of the second angular profile is also made with broadening and is simultaneously Interconnect cam intravascular respectively in the holder of the first sheet pile member.

In this case, the cams are double engaged, which increases its metal consumption, and the use of a special shaped profile designed only for the production of welded tongue significantly increases its installation cost and complicates installation work.

Known tongue-and-groove lock (patent RU2232847, publ. 2004.07.20, IPC E02D 5/08, G06K 19/02), which provides structurally specified freedom of angular deformation and the unification of the standard sizes of tongue and groove elements. The invention comprises a structure in which, on the opposite edge of the tongue and groove element opposite the welded edge of the groove of the angular profile, at an angle close to the straight line relative to the edge of the tongue of the groove element, a strip is welded with a width not less than twice the thickness of the shelf of the angular profile, and the connecting cam of the round profile is welded to the edge of another the tongue and groove element with an eccentricity of its axis relative to the median plane of the edge of the tongue and groove element. However, in the presented tongue-and-groove lock, the multi-element welded construction of the lock is unreliable and cannot work in the field of elastically plastic deformations, which leads to breakage of the tongue-and-groove lock during the installation of sheet piles and skew of the surfaces of the tongue-and-groove lock during installation.

The closest invention to the proposed technical solution is a lock (RU, patent 2103442 C1, IPC E02D 5/08, publ. 01/27/98) for connecting tongue-and-groove elements, including a holder formed by an angular profile welded to the tongue-and-groove element with the edge of one of the shelves under a sharp an angle with an inclination towards the free edge of the console and a connecting cam inserted into the cavity of the holder, welded to another sheet pile element.

The disadvantage of this lock is excessive rigidity due to the joint bending of the connected sheet piling elements, since under the influence of the moment of bending forces, one of them can freely deform and move in the cage relative to the other sheet piling only until the edge of the sheet piling element

rests against the welded edge of the corner profile, and the cam into the free shelf of this profile, after which the moment of force is perceived by the lock. In practice, this leads to the need for the individual manufacture of a large number of standard sizes of sheet piles on any curved section of the sheet piling wall and even on straight-line ones to compensate for the inevitable technological deviations from the sheet pile line. In addition, the location of each cam in the cage between the consoles of the connected tongue-and-groove elements leads to the sliding of the elements along the front of the tongue-and-groove wall to the width of the cam, as a result of which the specific bearing capacity of the wall is reduced.

It is most rational to use common corner profiles of universal purpose in the construction of tongue and groove locks.

However, in the construction of sheet pile walls from sheet piles, for example, Larsen piles with an open profile, the strength of piles in heavy soils is not enough, therefore it is required to use sheet piles of a closed profile, for example, round or square pipes, pipes welded from standard steel - corners, channels, Tauris, Larsen Piles.

When connecting sheet piles of a closed profile, it is necessary to ensure reliable assembly of the sheet piling during the process of pressing the piles into the ground. When piles are pressed in, increased lateral loads on the pile occur, which leads to a skew of the castle elements relative to each other and, accordingly, the setting of the tongue and groove elements of the castle. In addition, with transverse loads on the pile, the design clearance between the extreme point of the tongue and groove lock element is significantly reduced and, as a result, a significant increase in force both in the lock and on the pile, which leads either to breakage of the tongue-and-groove lock or to

increased effort during the installation of piles, up to the impossibility of further promotion of piles in the ground.

The technical result of the proposed utility model is to simplify the design of the tongue and groove lock, simplify the installation of the tongue and groove wall from the sheet piles when they are pressed into the ground, eliminating the skewness of the surfaces of the tongue and groove lock during installation.

This technical result is achieved as follows.

A tongue-and-groove lock formed of two elements, one of which is made in the form of an angular profile fixed to the tongue-and-groove forming pile with the longitudinal edge of one of the shelves, while the angular profile is welded to the longitudinal surface of the sheet pile at an acute angle with an inclination towards the edge of the free shelf, different the fact that the tongue-and-groove pile is made in the form of a closed-profile pile from a carbide steel grade, the surface hardness of which is greater than that of the tongue-and-groove elements of the lock. A tongue-and-groove lock consists of two identical elements in the form of standard angular profiles, which are fixed on two adjacent sheet piles parallel to the longitudinal axis of the sheet pile with a gap between the outer mating angle of the shelves of the standard corner profile and the outer surface of the adjacent sheet pile, each sheet pile element is made from mild steel. In this case, one standard profile is attached to the sheet pile at an angle a between the line passing through the outer mating angle of the shelves of the standard corner profile to the tangent mating point drawn to the outer surface of the sheet pile in its cross section, and the second standard corner profile is mounted on the adjacent sheet pile mirror to the first and at the same angle α between

a line passing through the outer mating angle of the shelves of the standard corner profile to the tangent mating point drawn to the outer surface of the adjacent sheet pile in its cross section and the gap h between the outer wall of the first sheet pile and the outer corner of the free shelf of the standard sheet profile fixed to the adjacent sheet pile calculated by the formula:

h = nδ,

where δ is the thickness of the flange of the angular profile,

n is the permeability coefficient.

The sheet pile can be made in the form of a pipe of circular cross-section or in the form of a pipe of square cross-section. For each sheet piling element, the angle α between the line passing through the outer mating angle of the shelves of the standard corner profile to any tangent point drawn to the outer surface of the sheet piling in its cross section can be, for example, square pipes - 90 degrees. The generatrix of the first sheet pile, which secures the angular profile of the first sheet piling element, can be shifted by an amount L relative to the generatrix of the second sheet piling, to which the angular profile of the second sheet piling element is fixed. When connected to the lock, the inner surface of the shelf of one standard angular profile attached to the first sheet pile can mesh with the inner surface of the shelf of the second standard angular profile of the adjacent sheet pile with or without a gap. A line passing through the outer mating angle of the flanges of the angular profile can be a limiter for the adjacent sheet pile along its longitudinal generatrix in the absence or insignificantly small gap between them

on the contact areas of the piles and the element of the castle. The tongue-and-groove pile can be made compound of Larsen elements or composite of standard profiles such as channels, brands, corners. Fastening of standard corner profiles to a sheet pile can be carried out by welding. As a standard corner profile, you can use both corners with shelves of equal size, and corners with shelves of different sizes. The permeability coefficient n can be taken, for example, from 2 to 3.

The presented technical solution is illustrated and explained, but is limited to the presented drawings.

Figure 1 - shows a tongue-and-groove lock in cross section; a) - sheet piling lock on sheet piles of the round pipe type; b) - sheet piling lock on sheet piles such as square pipes;

Figure 2 - shows a round pipe in cross section with welded on both sides along its forming elements of a tongue-and-groove lock;

Figure 3 - shows in cross section a sheet pile wall of sheet piles connected by sheet pins.

The first element (1) of the tongue-and-groove lock (2) is welded along the generatrix of the first sheet pile (3) in such a way that the angle α1 is formed by lines XX passing through point A and point B and forming Y-U. The gap h = 3 / 2δ, where δ is the thickness of the flange of the angular profile. A second sheet piling lock element (5) is welded to an adjacent sheet pile (4). The second element (5) is welded to the second sheet pile (4) mirror to the first element (1), observing an angle α2 equal to the angle α1 of the first

sheet pile element (1). In this case, the second element (5) enters with a free shelf into the gap h between the outer wall of the first sheet pile (3) and the outer corner of the free shelf of the standard corner profile (1). At the same time, a gap Δ is provided between the mating point of the shelves of the second element (5) and the surface of the first sheet pile (3), so that one sheet pile (3) is freely advanced relative to the second sheet pile (4). Due to the fact that the material of the sheet piles (3, 4) has a surface hardness greater than the surface hardness of the elements of the sheet piling (1, 5), when mounting the sheet piling, in case of reducing the gap Δ and / or the contact of the outer walls of the first and / or second sheet piles (3, 4) and the outer corner of the free shelf of the standard corner profile (1, 5), the resulting skew and its negative effect on the sheet piles and the tongue and groove lock are leveled due to the abrasion of the surface of the tongue and groove lock elements (2). As a result of such abrasion, there is no increase in effort during the installation of piles, and also there is no situation of impossibility of further promotion of piles in the ground. In the case of abrasion of the tongue and groove lock elements on their surface, the hardening effect is observed at the points of contact of the elements with the pile, which positively affects the strength of the tongue and groove lock elements, and also provides a fitting of the dimensions of the tongue and groove lock element in place in difficult places when piles are pressed into the ground. Thus, the elements of the tongue-and-groove lock due to the elastic-plastic deformation provide simplification of the installation of the tongue-and-groove wall from the sheet piles when they are pressed into the ground and eliminates the distortion of the surfaces of the tongue-and-groove lock during installation. The elimination of skew is also facilitated by the fact that the inner surfaces of the free shelves of the tongue and groove lock elements move relative to each other and work as guides. If square pipes are used as sheet pile, then the angle α is 90 degrees.

In the cross-section (Figure 2), the elements of the tongue-and-groove locks can be welded along the forming piles both from opposite sides in the diametrical plane, and with a shift of L, which will ensure the construction of the tongue wall either along a straight line (Figure 3), or along a line of complex configuration.

The proposed tongue and groove lock operates as follows. On a sheet pile along its generatrix, an angular standard profile is welded parallel to the axis of the sheet pile. From one to several corner profiles can be welded on each pile. The shift of the profiles by the value of L is calculated depending on the required sheet pile wall. If necessary, make joints of several walls, use three or more corner profiles on one pile. Before pressing the first pile into the ground, it is set strictly vertically, after which it is pressed. Before mounting the second sheet pile, it is set relative to the first pile with Δ clearances and the second pile is pressed in to ensure parallel movement to the first pile using sheet pile lock elements that serve as guides, compensators and a locking device.

Thus, the proposed technical solution provides the simplicity of the design of the tongue-and-groove lock, simplifying the installation of piles and eliminating distortion of piles during installation.

Claims (12)

1. A tongue-and-groove lock formed of two elements, one of which is made in the form of an angular profile fixed to the tongue-and-groove forming pile with the longitudinal edge of one of the shelves, while the angular profile is welded to the longitudinal surface of the sheet pile at an acute angle with an inclination towards the edge of the free shelf , characterized in that the sheet pile is made in the form of a closed profile pile from a carbide steel grade, the surface hardness of which is greater than that of the sheet pile lock elements, the sheet pile lock consists of two identical electric elements in the form of standard angular profiles, which are fixed on two adjacent sheet piles parallel to the longitudinal axis of the sheet pile with a gap between the outer mating angle of the shelves of the standard corner profile and the outer surface of the adjacent sheet pile, while one standard profile is mounted on the sheet pile at an angle α between a line passing through the outer mating angle of the shelves of the standard corner profile to the tangent mating point drawn to the outer surface of the sheet pile in its transverse cross section, and the second standard corner profile is mounted on the adjacent sheet pile in the mirror to the first and at the same angle α between the line passing through the outer mating angle of the shelves of the standard corner profile to the tangent mating point drawn to the outer surface of the adjacent sheet pile in its cross section , and the gap h between the outer wall of the first sheet pile and the outer corner of the free flange of a standard corner profile, mounted on an adjacent sheet pile, is calculated by the formula: h = nδ, where δ is the thickness LCI angular profile, n - permeability coefficient. 2. The tongue-and-groove lock according to claim 1, characterized in that the tongue-and-groove pile is made in the form of a circular pipe. 3. The tongue-and-groove lock according to claim 1, characterized in that the tongue-and-groove pile is made in the form of a square tube. 4. The tongue-and-groove lock according to claim 1, characterized in that for each element of the tongue-and-groove lock, the angle α between the line passing through the outer mating angle of the shelves of the standard corner profile to any tangent point drawn to the outer surface of the tongue-and-groove pile in its cross section is 90 °. 5. The tongue and groove lock according to claim 1, characterized in that the generatrix of the first sheet pile, to which the angular profile of the first tongue and groove lock is fixed, is shifted by an amount L relative to the generatrix of the second tongue and groove pile, to which the angular profile of the second tongue and groove lock is fixed. 6. The tongue-and-groove lock according to claim 1, characterized in that when connecting to the lock the inner surface of the shelf of one standard angular profile attached to the first sheet pile, engages with the inner surface of the shelf of the second standard angular profile of the adjacent sheet pile. 7. The tongue-and-groove lock according to claim 1, characterized in that the line passing through the outer mating angle of the shelves of the angular profile is a limiter for the adjacent sheet pile along its longitudinal generatrix. 8. The tongue-and-groove lock according to claim 1, characterized in that the tongue-and-groove pile is made integral of Larsen elements or composite of standard profiles such as channels, brands, corners. 9. The tongue-and-groove lock according to claim 1, characterized in that the fastening of standard corner profiles to the sheet pile is carried out by welding. 10. The tongue-and-groove lock according to claim 1, characterized in that as a standard corner profile, corners with shelves of equal size are used. 11. The tongue-and-groove lock according to claim 1, characterized in that as a standard corner profile, corners with shelves of different sizes are used. 12. The tongue-and-groove lock according to claim 1, characterized in that the passability coefficient n is adopted from 2 to 3.