KR100475169B1 - How to attach a sheet file to the beam - Google Patents

Abstract

The present invention discloses a method of connecting a standard sheet pile with a standard locking member to a standard girder 31. First, the initial flat edge 39 of the girder 31 flange will have a wave profile consisting of a series of longitudinal bosses 40, 42 protruding cantilevered from the flange of the girder 31. Next, the connecting profile 30 including the inwardly open grooves 36 is slotted onto the wave edges so that the cantilevered bosses 40 and 42 are fitted into the grooves 36 and on the wave edges. The connecting portion 30 can be locked in the lateral direction. The connection part 30 used has a mixed profile with a standard locking member 34 on the groove 36 opposite side to reinforce the standard locking member of the seat pile. Into the locking member 34, the standard locking members of the seat pile are mutually coupled to form a standard seat pile joint with each other.

Description

How to connect sheet pile to beam

The invention relates to a method for connecting a sheet pile to a beam, and in particular to the purpose of forming a joining support wall.

Coupled support walls consisting of metallic beams used as support elements and metallic sheet piles used as intermediate members intended to support the ground have long been known. Combined support walls have the advantage of having a very high cross-sectional coefficient.

ProfilARBED S.A (Luxembourg) sells an integrated system known as an "HZ bonded wall" for fabricating bonded support walls. The system consists of a special beam called an HZ beam, a Z-shaped special sheet pile called an intermediate material ZH sheet pile, and a connection called an RH connector. The flange of the HZ beam has a shape edge characterized by a shoulder of approximately a triangular portion protruding from itself. This shaped edge is formed in the compression bonding of the HZ beams. The intermediate member ZH sheet pile has no standard sheet pile connecting elements and each of the two flanges has a shape edge similar to that of the flange of the HZ beam.

The RH connection has two grooves that extend from the outside to the inside and are symmetrical to each other to form a chamber that reinforces the shaped edges of the flange of the ZH sheet pile and the HZ beam. The rolling shoulders of the HZ beam and the ZH sheet piles ensure the lateral locking of the flange edges in the RH connection grooves. The "HZ combined wall" integrated system has the disadvantage of requiring a program for rolling special beams and sheet piles. From an economic point of view, it is more effective to be able to produce combined support walls with beams and seat piles with standard programs.

The combined support wall, which is produced from a standard program using beams and sheet piles, is known from European patent application EP-A-OO72118. The beam used as the support is a standard flange edge, ie a rolled beam without shape. The flange edges to which the pile sheet is to be joined prior to striking this standard beam to the ground are cold rolled to have a longitudinal wave profile in the initial straight form. The wave profile is characterized by a series of bulges protruding from the undeformed flange.

The sheet pile connected to the flange is a half sheet pile obtained by longitudinally cutting a standard U-shaped sheet pile into two symmetrical sections. This half sheet pile consists of a first type edge with a standard sheet pile interconnecting member and a second type edge that is flat, ie unshaped.

This second type edge is cold rolled to have a wave shape similar to that of the beam. In order to connect the deformed edge of the sheet pile to the deformed edge of the beam flange, a connection with two grooves which are symmetrical to each other is used. These grooves are widened from the outside to the inside to form a chamber in which the bulges of the beam flange edges and the half sheet pile edges lock each edge laterally by the wedge effect. It is particularly noteworthy that this connection system, known under the term "crimping", has been disclosed in the German patent DE 593825 since 1934, a long time ago, with a sheet pile assembly without an interlocking member.

It is worth noting that the practical fabrication of the bonded support wall disclosed in European patent application EP-A-OO72118 is a further problem. In fact, the ramming operation of the half-sheet piles, if possible, is seen in the view that for the first time the low stiffness of the half-sheet piles and the cold-rolled papermaking of the sheet piles are guided to the connection of the pile flanges. Very uncertain. The risk of locking, deforming and / or unhooking the half sheet pile while striking the half sheet pile is consequently very high. Moreover, the use of a half sheet pile substantially reduces the imperviousness of the wall by increasing the number of joints per meter of extension of the wall as well as reducing efficiency in the field. The use of U-connected half sheet piles results in an improper arrangement of the sheet pile joints in the intermediate wall and adversely affects the section modulus of the walls.

Sheet piles, which are used to make uniform, ie, support piles, consisting solely of sheet piles, are optimized to ensure that the pile piles slide well while being piled so that they can be sufficiently locked against each other even if inevitably a torsion occurs. They are interlocked in such a way as to transmit thrust, retraction and shear forces to the wall, and to provide adequate impermeability. The most common interconnect member of a standard sheet pile is a "LARSSEN" type interconnect member. This "lacen" type interconnect member is formed by the interconnection of two similar interconnect members that are attached so that a wide portion overlaps. Since its production in 1902, "Lacen" type interconnect members continue to prove their utility in many applications worldwide. It is therefore desirable to be able to form a joint between the beam used as a pile in the mating support wall and the intermediate sheet pile, in particular a joint similar to a standard sheet pile joint, such as a "Lacen" type joint.

In order to solve this problem, the DE-U-92OOO21 specification has proposed a method of welding a "lacen" type interconnect member along the edge of the beam flange to which the sheet pile is to be connected. "Lacen" type interconnects are welded to the beam flanges using two continuous weld joints or continuous weld joints on one side of the flange and discontinuous weld joints on the other side of the flange. It is obvious that fabricating a welded joint is an expensive operation. Moreover, welded joints, which do not have to be as thick as the beams and sheet piles, form the weakest link of the mating support wall. Indeed, if the support wall is exposed to an environment and / or corrosion that makes the pile difficult to pile, the first weakened portion is this weld joint portion. Thus, the continuity of the wall is broken when the weld joint between the "Lacen" type interconnect member and the beam flange begins to deform. As a result, the reliability of the proposed method in the DE-U-92OOO21 specification proved to be insufficient for many applications.

The method and advantages according to the invention are illustrated by the accompanying drawings.

1A and 1B are cross-sectional views of a "Lacen" type interlocking member of a standard Z-shaped sheet pile.

2A and 2B are cross-sectional views of the interconnecting members of FIGS. 1A and 1B interconnected in accordance with a preferred manner of making a connection;

3 is a cross sectional view of a connection connected to a beam flange constructed according to a preferred manner;

4 is a cross-sectional view of a portion of the combined support wall fabricated using the connection of FIG. 3.

Figure 5 is a cross-sectional view of a portion of the combined support wall produced by varying the connection manufacturing method.

The underlying problem of the present invention lies in the proposal of an economical way to more reliably connect a standard sheet pile with a standard interlocking member, such as a "Lacen" type interlocking member, to the flange of a standard beam.

This problem is solved by the method according to claim 1.

First, the initial flat edge of the standard beam flange is provided with a wave profile including a series of longitudinal bulges protruding from the flange. The connection with grooves extending outwards is slid over the edge prepared in the above manner so that the projecting bulge is received in the groove to laterally lock the hybrid connection on the wave edge. According to this invention the hybrid connection comprises a standard interlocking member which reinforces the standard interlocking member of the sheet pile on the opposite side of the groove. Then it remains only to interconnect the standard interconnect members of the seat pile into the interconnect members of the connection attached to the beam to form a standard sheet pile joint. Compared to the weld joints disclosed in the DE-U-92OOOO21 specification, the joints fabricated by the method of the present invention have a lower risk of breakage, especially when the support walls are exposed to conditions that are difficult to corrode and / or pile pile. Compared with the connection disclosed in the European patent application EP-A-OO72118, the connection produced by the method of the present invention has many advantages, for example, as follows.

The possibility of connecting a complete standard sheet pile to the beam by improving efficiency in the field, reducing the number of joints per meter of extension of the wall and improving the section modulus of this wall;

Improved guidance for guiding the seat pile into the interlocking member of the hybrid joint during the pile driving; And

-Possibility to adjust all the weak points in the beam arrangement in the mating wall due to the clearances allowed in the interlocking members of the sheet pile to the level of the sheet pile joint.

If this method is used in a mating wall to connect a standard sheet pile fitted with a standard interconnect member to the flange of the beam, the following steps are carried out after the joint slides over the wave edge:

The connection is longitudinally locked to the flange of the beam,

The beam prepared in this way is partially (or almost completely) embedded in the ground,

The standard interlocking member of the seat pile is interleaved into the interconnecting member of the connection and the seat pile is embedded in the ground to form a standard seat pile joint.

It would also be possible for the edge of the beam to have a wave profile with a series of bulges all projecting from the same surface of the flange. However, it is more advantageous to have the edge of the beam have a series of bulges projecting alternately from two surfaces of the flange. The grooves in the connection that accommodate these bulges may thus have a plane of symmetry so that the connection can rotate 180 ° to be mounted at two different locations on the wave edge, which increases the mounting flexibility with which the connection can be used.

It is advantageous that both the standard interconnecting member of the connection and the standard interconnecting member of the sheet pile comprise a hook-like member and an abutment surface located on the opposite side of the hook. The abutment surface is formed by the hook with a slit-shaped hole that allows access to the inner chamber of the hook that is enclosed by the hook (generally referred to as the "ridge") head of the reinforcing interconnecting member. The preferred type of connection also has a body having a C-shaped cross section to form a groove that allows the reception of the beam flange wave edges. The hook-like member is located on this C-shaped body so that the back of the "C" shaped portion forms the abutting surface.

In the case of a preferred type of connection, the hook is located a distance "z" away from the plane of symmetry of the groove. This distance " z " almost coincides with half the width of this member which is less than half the thickness of the hook-like member. This sophisticated arrangement ensures that in standard Z-shaped sheet piles connected to two beams on both sides of the sheet pile, using only a single type of connection, the flange face is located parallel to the beam flange.

Preferably, a Z-shaped sheet pile is used having a large " racene " type interlocking member forming a joined support wall. However, it is not excluded to adapt the method by other types of sheet pile interlocking members if the following requirements are satisfied.

1) mutual coupling members must be capable of mutual coupling with each other with sufficient clearance to allow them to slide easily;

2) The shape of the interlocking member, despite this play:

Sufficient guidance is maintained during pile driving;

-Have a mutually sufficient force to withstand the torsional forces unavoidable;

3) Interlocking members must be mutually coupled so that thrust, retraction, or shear force applied by the seat pile of the supporting wall can be transmitted through the joint.

FIG. 1A shows the flange 10 of a Z-shaped sheet pile with the first standard "Lacen" type interlocking member indicated by the arrow 12 at the end. FIG. 1B shows the flange 14 of the Z-shaped sheet pile with the second standard "Lacen" type interlocking member indicated by the arrow 16 at the end. Both of these interconnecting members 12 and 16 have a longitudinal edge 18 that is bent to have a cross section approximately corresponding to the cross section of the J-shaped hook. This bend edge 18, referred to simply as " hook 18, " opposes the abutment surface 20, allowing the width " a " to allow access to the inner chamber 21 of the hook 18 by the surface. Form a slit-shaped hole. The width " a " is substantially smaller than the width " b " of the head of the hook 18, generally called the ridge, which is received into the inner chamber 21 during the interconnection of the two interconnecting members.

The interconnecting member hooks 18 of FIGS. 1A and 1B have approximately the same geometry. However, in the case of FIG. 1A, the abutment surface 20 is formed by the bend 22 of the flange 10. In contrast, in the case of FIG. 1B the abutment surface 20 is formed by ridges 24 on the flange 14. Interconnect member 12 will be referred to as a "curved" interconnect member and interconnect member 16 will be referred to as a "linear" interconnect member.

Band 22 height " h " of curved interconnect member 12 is defined as follows:

h = c + e + j

Where c = width of the hook (18)

e = hook thickness of the part parallel to the flange

j = mutual coupling clearance perpendicular to the flange

The fact that the band 22 has a height "h" formed in this way is true when the outer surfaces 10 'and 14' of the flanges 10 and 14 are joined together by the two interconnecting members 12 and 16. It is guaranteed to be on the same plane.

A preferred way of making a connection 30 designed to connect the seat pile flanges 10 and 14 to one end of the beam flange 31 is shown in FIG. 3 (the ends of the beam flanges 31 are shown in dashed lines). . The connecting portion 30 is a blend consisting of a body 32 on one side having a substantially C-shaped cross section and a standard "lacen" type coupling member 34 on the other side.

The body 32 is designed to slide longitudinally over the end edge 39 of the beam flange 31. This edge 39 is cold rolled to have a wave shaped longitudinal profile which is characterized by a series of bulges 40, 42 which alternately face both sides of the flange. To accommodate the wave edges, the body 32 has a groove 36 (also shown in FIGS. 2A and 2B) that extends outwardly in symmetry with the plane 38 (hereinafter referred to as the symmetry plane of the groove 36). Form.

The bulge 40, 42 is received into the groove 30 when the horn 30 slides longitudinally over the deformation edge of the beam flange 31. The distance "x" between the line through the tip of the bulge 42 and the line through the tip of the bulge 40 is significantly greater than the width "y" of the hole in the groove 36 as shown in FIG. 3. The bulges 40 and 42 consequently allow the mixed connection 30 to be laterally locked onto the beam flange 31 more reliably.

Like the sheet pile interlocking members 12 and 16 described above, the standard interlocking member 34 of the connection portion 30 consists of a J-shaped bent edge and abutting surface 20 'acting as a hook 18'. do. The abutment surface is formed by the back of the body 32 where the hook 18 'is located. The dimensions "a '", "b'" and "c '" substantially correspond to the dimensions "a", "b" and "c" of the "Lacen" type sheet pile interconnecting member (see FIGS. 1A and 1B). ).

It should be noted that the hook 18 ′ is located a distance “z” away from the plane of symmetry 38 of the groove 36. In FIGS. 2A and 2B, the distance “z” shows that the interconnecting members 12 and 14 of FIGS. 1A and 1B are interconnected to the standard “lacen” type interconnecting member 34 of the connection 30. Is determined in such a way that the distances x ₁ and x ₂ are approximately equal. These distances x ₁ and x ₂ are the distances of the flanges 10 and 14 outer surfaces 10 'and 14' from the groove 36 symmetry plane. Indicates. This state is negligible if the mutual coupling play is ignored.

z = (c-e) / 2

Where z = between the plane of symmetry 38 of groove 36 and the bottom surface 21 'of chamber 21'.

           Distance

       c = width of seat pile hook (18)

       e = thickness of the seatpile hook 18 with a portion parallel to the flange

If the relationship is

The effect of this sophisticated design of the connection 30 will be more clearly understood when compared with FIGS. 4 and 5.

FIG. 4 shows a portion of a mating support wall fabricated using the connection of FIG. 3. This part consists of two beams 50, 52 serving as supports and two Z-shaped sheet piles 54, 56 serving as intermediate portions. The beam 50 supports the connection 30 ₁ according to FIG. 3, wherein the hook 18 ′ of the connection has an outwardly facing hole. The beam 52 supports a connection 30 _{2 which} is exactly the same as the connection 30 ₁ . However, since the connecting portion 30 ₂ is rotated 180 ° about the longitudinal axis, the hole of the hook 18 'faces inward. The interconnecting member 34 of the connecting portion 30 ₁ is interconnected to the straight interconnecting member 16 of the seat pile 54 (ie, an interconnecting member of the type shown in FIG. 1B). The interconnecting member 34 of the connecting portion 30 ₂ is interconnected to the curved interconnecting member 12 of the seat pile 56 (ie, an interconnecting member of the type shown in FIG. 1A). A closer examination of FIG. 4 shows that, with the precise positioning of the hooks 18 'on the connection 3, the flange faces 10', 14 'are parallel to the two outer faces of the beam flange in parallel with only a single type connection. You will find that it makes it possible.

5 also shows a portion of the mating support wall. This portion has different connecting portions 130 ₁ and 130 ₂ than the connecting portion of FIG. 3. The distance "Z" is not added at the connections 130 ₁ and 130 ₂ . As a result, the outer surfaces 10 ', 14' of the flange are no longer parallel to the two outer surfaces of the beam flange.

The joint between the beam 50 and the seat pile 54 of the supporting wall portion of FIG. 4 is more effectively manufactured as follows. Even after the initial flat edge of the flange 31 of the beam 50 has a wave-like longitudinal profile consisting of a series of bulges 40 and 42 protruding from the flange 31, the connection 30 according to 3 remains at this wave edge. Slide up. The connection is then longitudinally locked to the beam flange to prevent the connection from being axially displaced with respect to the beam flange while the beam and / or seat pile are off the ground. In this case, the locking may be made by welding. However, it is also possible to deform the connection at the position of the groove 36 to cause a longitudinal contact inside the bulges 40, 42. After this preparation, the beam 50 can be embedded in the ground. The interlocking members 16 of the seat pile 54 are interleaved into the interlocking members of the connecting portion protruding from the ground and the seat pile is embedded in the ground (for example, by pile driving or vibration method).

It is emphasized that the connection 30 or 130 can be used to connect the U-shaped sheet pile to the beams 50 and 52. If one or three U-shaped sheet piles are used between the two beams, it is necessary to rotate the connection part 30 ₂ by 180 ° with the hook face up.

Claims (10)

The initial flat edge 39 of the beam flange 31 has a wave-like profile consisting of a series of longitudinal bulges 40, 42 protruding from the beam flange 31; A connection 30 having a groove 36 widening inward from the outside allows the projecting bulges 40, 42 to be received in the groove 36 to lock the connection 30 laterally on the wave edge. Sliding over wave edges; In a method of connecting a standard sheet pile with a standard interconnect member (12, 16) to a standard beam flange (31), The connecting portion 30 is a hybrid portion provided on the opposite side of the groove 36 with a standard interlocking member 34 for reinforcing the standard interlocking members 12 and 16 of the sheet pile, and the standard of the sheet pile. And a coupling member (12, 16) is mutually coupled into the coupling member (34) of the connection (30) to form a standard sheet pile joint between both the flange and the sheet pile. The initial flat edge 39 of the beam flange 31 has a wave-shaped profile consisting of a series of longitudinal bulges 40 and 42 protruding from the beam flange; The connecting portion 30 having the groove 36 widening inward from the outside allows the protruding bulges 40 and 42 to be received in the groove 36 so as to lock the connecting portion 30 so as not to be removed laterally. Sliding over the edge; In a method of connecting a standard sheet pile with a standard interconnecting member (12, 16) in a joined support wall to a standard beam flange (31), The connecting portion 30 is a hybrid portion having standard interlocking members 34 on the opposite side of the groove 36 for reinforcing the standard interlocking members 12 and 16 of the sheet pile, and the connecting portion 30 After sliding on the wave edge: The connection 30 is locked longitudinally with respect to the beam flange 31 Beams 50, 52 are partially embedded in the ground The standard interlocking members 12, 16 of the seat piles 54, 56 are mutually coupled to the interlocking member 34 of the connection part 30, and the sheet pile is a standard sheet between both the flange and the sheet pile. And is embedded in the ground to form a pile joint. The method of claim 2, The connection portion (30) is welded to the beam flange (31) after sliding over the wave edge. The method of claim 2, And the connector (30) is deformed at the groove (36) position such that it is longitudinally abutted with the groove behind the bulge (40,42) after sliding over the wave edge. The method according to any one of claims 1 to 4, The initial flat edge 31 of the beam flange 31 will have a wave-like profile with a series of longitudinal bulges 40 and 42 protruding from the two sides of the flange, with the groove 36 having a connection 30. And having a plane of symmetry (38) so that it can be rotated 180 degrees to be mounted at two different positions of the wave edge. The method according to any one of claims 1 to 4, Both the standard interconnecting member 34 of the connection 30 and the standard interconnecting member 12, 16 of the seat pile are opposite to the hooked edge 18, 18 ′ and the hook 18, 18 ′. And an abutment surface (20, 20 ') positioned and defining an opening in the inner chamber by a hook. The method of claim 6, The connection 30 includes a body 32 having a C-shaped cross section and forming a groove 36, the hook 18 ′ having the back surface of the “C” shaped portion forming the abutment surface 20 ′. Method on the body (32). The method of claim 5, The back connection 30 includes a body 32 having a C-shaped cross section and forming a groove 36, wherein the hook 18 ′ has the back of the “C” shaped portion facing the abutment surface 20 ′. Positioned on the body 32, the hook 18 ′ having a width “c” of the sheet pile hook 18 and a portion of the sheet pile hook 18 parallel to the sheet pile flanges 12, 14. A distance "z" from the plane of symmetry of the groove (36) which is approximately equal to half of the distance difference between the thickness "e". The method according to any one of claims 1 to 8, The sheet pile is a Z-shaped sheet pile and the standard interlocking member (12, 16, 34) is a "lacen" type interlocking member. To form a groove 36 having a C-shaped cross section, widening inward from the outside and having a plane of symmetry 38, and having a wave profile in which one edge 39 of the beam flange 31 can be received and locked therein A designed body 32 is included on one side; Standard seat pile interconnecting members 12 and 16 are provided with abutting surface 20 'which is positioned opposite the hooked edge 18' and the hook 18 'and forms an opening to the inner chamber 21. A standard interconnecting member 34 of the reinforcing connection 30 is included on the other side; The hook 18 'is positioned on the body 32 such that the rear surface of the "C" portion forms the abutting surface 20', and the sheet pile hook (in the portion parallel to the sheet pile flanges 12 and 14). 18) and a distance " z " from the symmetry plane 38 of the groove 36 approximately coinciding with half the distance difference between the thickness " e "and the width" c " A connection portion of a standard sheet pile to a standard beam flange 31 having standard interconnecting members 12 and 16.