EP1328686B1 - Connector profile for sheet piles - Google Patents

Abstract

The invention relates to a connector profile, with two asymmetrical connecting pivots (12, 12') for a hook-like sheet pile connector (112, 112'), comprising three arms (16, 18, 20) which extend form a common mid-point (O) in three directions. The first arm (16) has a first hook element (22) on the free end thereof, extending in the direction of the second arm (18), forming the pivot chamber (24) of the first pivot (12) therewith, whereby the pivot opening (26) is defined by the separation of the tip (28) of the first hook element (22) from the second arm (18). The second arm (18) comprises a second hook element (22') on the free end thereof, extending in the direction of the third arm (20), forming the pivot chamber (24') of the second pivot (12') therewith, whereby the pivot opening (26') is defined by the separation of the tip (28') of the second hook element (22') from the third arm (20). The third arm (20) has no hook element.

Description

The present invention relates to a corner joint for sheet piles with hook-shaped locks.

State of the art

Most sheet piles today are interconnected by overlapping hook locks (such as LARSSEN locks) which intermesh positively and allow only low amplitude rotation (typically less than 5 °) in the lock connection. Larger changes in direction of the sheet pile wall are made by inserting a special connection profile between two sheet piles. Such a connection profile is a strip-shaped profile, with a first connection lock, for connection to a lock of the first sheet pile, and a second connection lock, for connection to a lock of the second sheet pile. There are known connection profiles with symmetrically and asymmetrically arranged connection locks.

A connection profile with symmetrically arranged connection locks is the OMEGA-18 profile from PROFILARBED. This is a hot-rolled, very compact connecting profile, which in cross section has the shape of the Greek letter "ω", with a central web and two arms symmetrical to the central web. The two arms have at their free end in each case a hook element which is aligned in the direction of a central web. They form together with the central web two symmetrical Schlosskammem, wherein a lock opening is defined by the distance of the tip of the hook member to the central web. A rounded shape of the lock chamber allows a LARSSEN lock of a sheet pile to rotate to a larger amplitude so that corners with an internal angle of 90 ° to 135 ° can be made with this OMEGA-18 profile. It should be noted that Z-planks connected to the OMEGA-18 profile are both symmetrical and asymmetric Bisector can be arranged. When connecting U-planks to the OMEGA-18 profile, however, only a symmetrical arrangement of the U-planks to the bisector is possible.

With the so-called C12 profile, PROFILARBED has a connection profile with asymmetrically arranged connection locks in its product range. This is a hot-rolled profile with a straight bar, which has an overlapping LARSSEN hook at one end and a simple hook at the other end "The overlapping LARSSEN hook is right-angled to one side of the web, the simple hook is bent at right angles to the other side of the web." The C12 profile allows for a 90 ° corner with only small angular deviations (typically less than 5 °) Since the simple hook does not always provide the necessary unhooking safety, it is customary to weld the C12 profile on the side of the single hook to the plank lock.When connecting Z planks to the C12 profile, the planks can be both symmetrical and also be arranged asymmetrically to the bisector When connecting U-boards is only an asymmetric arrangement to the bisector possible ..

A connection profile with asymmetrically arranged connection locks is also from the WO 98/58131 known. This profile has a central web on both ends of which a C-shaped or sickle-shaped hook is arranged. The first hook is bent to one side of the web, wherein a lock opening between the tip of the first hook and the web, set in the direction perpendicular to the web. The second hook is bent to the other side of the web, wherein a lock opening between the tip of the second hook and a bead-like thickening on the web, is set in approximately parallel to the web .. From the cross-section of this connection profile is said to be approximately the shape of a Seahorse has. The arcuate inner walls of the two hook strips are intended to embrace the screed locks generously, so that the sheet piles to be connected via the connecting element can have an angle between 45 ° and about 125 °.

An extruded connection profile with two hooks which are arranged asymmetrically on a central web is in the utility model DE 29821624 U1 . FIG. 4 , shown. This profile is now also known on the market under the name WALL-PROFIL® V20. It is a profile that has the same wall thickness everywhere. The first hook goes almost perpendicularly from the web at one end of the web and extends substantially crescent-shaped, with its tip is virtually opposite its starting point on the web and thus defines the lock opening. The second hook is bent approximately semicircular, so that its tip is again turned towards the bridge and thus defines the lock opening. This profile should be hooked with his crescent-shaped and semi-circular hook each reliable in a LARSSEN castle a sheet pile, the hooked lock of the sheet pile should allegedly be pivoted by about 60 °, without the risk of unhooking. However, it should be noted that with the WALL-PROFIL® V20, the lock openings can be widened relatively easily, whereby then sufficient Aushaksicherheit is no longer guaranteed.

The US 6,042,306 is exclusively concerned with creating a connection profile to connect, in straight sheet pile walls, sheet-pile-type sheet piles to sheet pile-shaped sheet piles.

Object of the invention

An object of the present invention is to provide a corner joint for sheet piles with hook-shaped locks, in which a connection profile with two asymmetrically arranged, equivalent connection locks is used, this connection profile should be more compact and solid than all previous connection profiles with asymmetric locks .. This The object is achieved by a corner joint according to claim 1.

Marking of the invention

In a corner joint according to the invention, a connection profile with a first connection lock engages in a hook-shaped plank lock of the first sheet pile and with a second connection lock in a hook-shaped plank lock of the second sheet pile, wherein the two connection locks are arranged asymmetrically on the connection profile. According to the present invention, the two terminal locks of the connection profile are formed by three arms extending from a common center in three directions. The first arm has at its free end a first hook element, which is aligned in the direction of the second arm, in such a way that it forms with the second arm a lock chamber of the first lock, wherein a lock opening by the distance of the tip of the first hook element is set to the second arm. The second arm has at its free end a second hook element, which is aligned in the direction of the third arm, in such a way that it forms a lock chamber of the second lock with the third arm, wherein a lock opening by the distance of the tip of the second hook element is fixed to the third arm. The third arm has, unlike the other two arms, no hook element. It should be noted that in a connection profile according to the invention no connecting web is arranged between the two locks. The two locks are directly adjacent to each other, with the second arm helping to lock the lock chamber and lock opening of the first lock, and the third arm to lock the lock chamber and lock opening of the second lock. As a result, an extremely compact and solid connection profile is achieved, which is very resistant to cross-sectional deformations, which can sometimes lead to Aushakungen.

The two connection locks are advantageously aligned offset by 90 ° to each other, so that the connection profile, for example, advantageous for the production of a 90 ° corner with two asymmetrically arranged U-planks, or two symmetrically arranged Z-planks is suitable. In a preferred Embodiment, the second lock is substantially a rotation image of the first lock, wherein the rotation is a 90 ° rotation about the common center of the three arms.

Each of the two hook elements is advantageously formed by a wedge-shaped thickening at the end of the respective arm, which extends between a rounded tip and a rounded heel and can be accommodated as a lock head in a lock chamber of the plank lock. As a result, the Aushaksicherheit is further improved.

The third arm, which does not include a hook element, may be substantially straight. However, its free end could also be slightly bent in the direction of the second hook element to further improve the Aushaksicherheit the second lock.

In an advantageous embodiment of the lock chamber of the first lock, the hook element of the first arm has a substantially planar guide surface, which is followed by a cylindrical guide surface, which in turn merges into a substantially planar guide surface on the second arm. In an advantageous embodiment of the lock chamber of the second lock, the hook element of the second arm has a substantially planar guide surface, which is followed by a cylindrical guide surface, which in turn merges into a substantially planar guide surface on the third arm. The two flat surfaces in a lock chamber are in this case preferably at an angle of 44 ° to 52 ° degrees to each other. Between the planar guide surface of the hook element and the lock opening, the guide surfaces preferably comprise an angle sector of 130 ° to 150 °. This design of the guide surfaces carries u.a. In addition, the lock head of a hook-shaped screed lock (such as a LARSSEN lock) in the lock chamber of the connection lock in the connection profile can perform larger rotations, while ensuring proper guidance and sufficient Aushaksicherheit.

It is particularly important to emphasize that a connection profile for a corner joint according to the invention can be produced by hot rolling. Compared to an extruded profile, the hot rolled profile can be made more cost effective and with much longer fabrication lengths. It is also less sensitive to deformation than an extruded profile.

The two connection locks of the connection profile are preferably designed such that they allow a corner connection with an internal angle in the range of 60 ° to 120 ° by a rotation of the sheet pile locks in the connection profile.

In a corner joint according to the invention, the connection profile can be e.g. connect two U-sheet piles, which are arranged asymmetrically to each other.

To make the corner joint aushaksicher, it is sufficient that the lock opening of the two terminal locks each smaller by a few millimeters than the hook width of the sheet pile locks, and the hook width of the two connection locks each larger by a few millimeters than the lock openings of the sheet pile locks, the hook-shaped sheet pile locks preferably LARSSEN locks are.

piece placement

Fig.1:

einen Querschnitt durch ein Verbindungsprofil für eine erfindungsgemäße Eckverbindung;

Fig.2:

einen Querschnitt wie in Fig. 1, wobei das Verbindungsprofil mit zwei eingehakten LARSSEN-Schlössern gezeigt ist, die ihrerseits in unterschiedlichen Winkelstellungen gezeigt sind;

Fig.3:

einen Querschnitt durch eine erfindungsgemäße Eckverbindung von zwei asymmetrisch zur Winkelhalbierenden angeordneten U-Bohlen; und

Fig.4:

einen Querschnitt durch eine erfindungsgemäße Eckverbindung von zwei symmetrisch zur Winkelhalbierenden angeordneten Z-Bohlen.

An embodiment of the invention will now be described with reference to the accompanying drawings. Show it:

Fig.1:

a cross section through a connecting profile for a corner joint according to the invention;

Figure 2:

a cross section as in Fig. 1 wherein the connection profile is shown with two hooked LARSSEN locks, which in turn are shown in different angular positions;

Figure 3:

a cross section through a corner joint according to the invention of two arranged asymmetrically to the bisector U-planks; and

Figure 4:

a cross section through an inventive corner joint of two symmetrically arranged to the bisecting Z-planks.

Description of a preferred embodiment of the invention with reference to the figures

By the reference numeral 10 in each case a connection profile is designated in the figures. It is in this connection profile 10 is a strip-shaped, hot-rolled profile with two connection locks 12 and 12 'for each hook-shaped sheet pile lock, such as those in Fig. 2 shown LARSSEN locks 112 and 112 '.

This connection profile 10 comprises a first arm 16, a second arm 18 and a third arm 20, which extend in a star shape in three directions from a common center O to form the two connection locks 12 and 12 '.

The first arm 16 has at its free end on a first hook member 22 which is aligned in the direction of the second arm 18, in such a way that it forms a lock chamber 24 of the first lock 12 with this second arm. This lock chamber 24 has a lock opening 26 whose width is determined by the distance of a rounded tip 28 of the first hook element 22 to the second arm 18. The hook element 22 is formed by a wedge-shaped thickening at the end of the first arm, which is received when hooking the LARSSEN lock 112 as a lock head in a lock chamber of the LARSSEN castle 112 (see Fig. 2 ). The hook width 30, that is, the distance between the rounded tip 28 and a rounded heel 32 is hereby a few millimeters larger than the lock opening in LARSSEN lock 112. Likewise, the hook width of the LARSSEN lock 112 is a few millimeters larger than the lock opening 26, so that a sufficient lock overlap is guaranteed.

The second arm 18 has at its free end on a second hook member 22 ', which is aligned in the direction of the third arm 20, in such a way that it forms a lock chamber 24' of the second lock 12 'with this third arm. The latter is essentially a rotation image of the first lock 12, wherein the rotation is a 90 ° rotation about the common Center O of the three arms 16, 18, 20 is. It has a lock opening 26 'whose width is determined by the distance of the rounded tip 28' of the second hook element 22 'to the third arm 20. As in the lock 12, also in the lock 12 'is the hook width 30', that is the distance between the rounded tip 28 'and a rounded heel 32', in this case by a few millimeters larger than the lock opening in LARSSEN castle 112 ', and the Hook width of the LARSSEN lock 112 'by a few millimeters larger than the lock opening 26', so that a sufficient lock overlap is ensured.

The third arm 20, which does not comprise a hook element, is in the embodiment of Fig. 1 essentially straight. However, its free end could also be slightly bent in the direction of the second hook element 22 'in order to further improve the unhooking safety of the second lock 12'.

The lock chamber 24 of the first lock 12 has a substantially planar first guide surface 34 formed by the hook member 22 of the first arm 16. At this first guide surface 34 is followed by a cylindrical guide surface 36, which merges on the second arm 18, just before the lock opening 26, in turn, in a substantially planar guide surface 38. The radius of the cylindrical guide surface 36 is in this case in the transition region 40 is smaller than in the area of the first arm 16. The second lock chamber 24 'is designed similarly. It has a substantially planar first guide surface 34 'which is formed by the hook element 22' of the second arm 18. At this first guide surface 34 'is followed by a cylindrical guide surface 36', which merges on the third arm 20, just before the lock opening 26 ', in turn, in a substantially planar guide surface 38'. The radius of the cylindrical guide surface 36 'is in this case in the transition region 40' smaller than in the region of the second arm 18. The two flat surfaces 34 and 38 (or 34 'and 38') in the lock chamber 24 (or 24 ') are in this case preferably at an angle of approximately 48 ° to one another. Between the planar guide surface 34 (or 34 ') of the hook element 22 (or 22') and the lock opening 26 (or 26 '), the guide surfaces preferably comprise an angle sector 42 (or 42 ') of 130 ° up to 150 °. This design of the guide surfaces contributes, inter alia, that the lock head of the LARSSEN lock 112, 112 'in the lock chamber of the connection lock 12, 12' in the connection profile can perform larger rotations, but a proper guidance and sufficient Aushaksicherheit is ensured (see in particular Fig. 2 ).

The connection profile 10 may have the same length as the hot rolled section of the hot-rolled sheet piles (usually 24 m). It usually has a cross-sectional width of about 90 mm and a cross-sectional height of about 50 mm and is therefore much more compact, but at the same time substantially more massive than the known as WALL-PROFIL® V20, extruded connection profile. With the arrow 42 is in Fig. 1 denotes a recess which extends relative to the arm 18 in the longitudinal direction of the profile and whose task is to save weight and at the same time to position the profile during rolling.

As in Fig. 2 indicated, each of the two LARSSEN locks 112, 112 'in its respective terminal lock 12, 12' on a pivoting range of approximately 30 °. This swivel range makes it possible to produce corner joints with an internal angle of 60 ° to 120 °.

In FIG. 3 is a corner joint with an internal angle of 90 ° between two asymmetrically arranged to the bisector 101 U-planks 100 and 100 'shown.

In FIG. 4 is a corner joint with an internal angle of 90 ° between two symmetrically arranged to the bisector 101 Z-planks 102 and 102 'shown.

Claims (14)

1. Corner connection between two sheet piles, in which a connecting profile (10) with a first connection lock (12) engages into a hook-shaped pile lock (112) of the first sheet pile, and with a second connection lock (12') engages into a hook-shaped pile lock (112') of the second sheet pile, wherein both of the connection locks (12, 12') are asymmetrically arranged on the connecting profile (10); characterised in that: the connecting profile comprises a first, second and third arm (16, 18, 20) which extend from a common mid point (O) in three directions so as to form both connection locks (12, 12'); the first arm (16) has a first hook element (22) on its free end, said hook extending in the direction of the second arm (18), such that with the second arm (18) it forms a locking chamber (24) for the first lock (12), wherein a lock opening (26) is defined by the separation of the tip (28) of the first hook element (22) from the second arm (18); the second arm (18) has a second hook element (22') on its free end, said hook extending in the direction of the third arm (20), such that with the third arm (20) it forms a locking chamber (24') for the second lock (12'), wherein a lock opening (26') is defined by the separation of the tip (28') of the second hook element (22') from the third arm (20); and the third arm (20) does not have a hook element.
2. Corner connection according to claim 1, characterized in that both connection locks (12, 12') are designed to be offset to one another by 90°.
3. Corner connection according to claim 1 or 2, characterized in that the second connection lock (12') is essentially a rotated image of the first lock (12), wherein the rotation is a 90° rotation about the common mid point (O) of the three arms (16, 18, 20)
4. Corner connection according to one of claims 1 to 3, characterized in that each of the two hook elements (22, 22') is advantageously formed by a wedge-shaped enlargement on the end of each arm (16, 18), said element extending between a rounded tip (28, 28') and a rounded heel (32, 32'), and is inserted as a locking head into a locking chamber of the pile lock (112, 112').
5. Corner connection according to one of claims 1 to 4, characterized in that the third arm (20) is essentially straight
6. Corner connection according to one of claims 1 to 5, characterized in that in the locking chamber (24) of the first connecting lock (12), the hook element (22) of the first arm (16) has an essentially flat guide surface (34), onto which a cylindrical guide surface (36) is joined, which again becomes an essentially flat guide surface (38) on the second arm (18)
7. Corner connection according to one of claims 1 to 6, characterized in that in the locking chamber (24') of the second connecting lock (12'), the hook element (22') of the second arm (18) has an essentially flat guide surface (34'), onto which a cylindrical guide surface (36') is joined, which again becomes an essentially flat guide surface (38') on the third arm (20)
8. Corner connection according to claim 6 or 7, characterized in that both the flat surfaces (34, 38) (34', 38') in a locking chamber (24, 24') stand at an angle of 44° to 52° to one another.
9. Corner connection according to claim 6, 7 or 8, characterized in that the locking chamber (24, 24') between the flat surfaces (34, 34') of the hook element (22, 22') and the lock opening (26, 26') comprises a sector angle (42, 42') of 130° to 150°.
10. Corner connection according to one of claims 1 to 9, characterized in that the connection profile is hot rolled
11. Corner connection according to one of claims 1 to 10, characterized in that both the connecting locks (12, 12') of the connecting profile (10) are designed such that by rotating the pile lock (112, 112') in the connecting profile (10) they enable a corner connection with an internal angle in the range of 60° to 120°.
12. Corner connection according to one of claims 1 to 11, characterized in that the two sheet piles that are connected by the connecting profile (10) are U-piles (100, 100') that are arranged asymmetrically to one another.
13. Corner connection according to one of claims 1 to 12, characterized in that:

    the lock opening (26, 26') of both the connecting locks (12, 12') is in each case some millimetres smaller than the hook width of the pile lock (112, 112'); and

    the hook width (30, 30') of both the connecting locks (12, 12') is in each case some millimetres larger than the lock openings of the pile lock (112, 112').
14. Corner connection according to one of claims 1 to 13, characterized in that both the hook-shaped pile locks are LARSSEN locks (112, 112').

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