CA2010574A1 - Bend-resistant connecting element and method for making the same - Google Patents
Bend-resistant connecting element and method for making the sameInfo
- Publication number
- CA2010574A1 CA2010574A1 CA 2010574 CA2010574A CA2010574A1 CA 2010574 A1 CA2010574 A1 CA 2010574A1 CA 2010574 CA2010574 CA 2010574 CA 2010574 A CA2010574 A CA 2010574A CA 2010574 A1 CA2010574 A1 CA 2010574A1
- Authority
- CA
- Canada
- Prior art keywords
- connector
- piles
- section
- rigid connector
- rigid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101100161935 Caenorhabditis elegans act-4 gene Proteins 0.000 description 1
- 101100114358 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) cog-6 gene Proteins 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/08—Locking forms; Edge joints; Pile crossings; Branch pieces
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Metal Rolling (AREA)
Abstract
Abstract The invention concerns a connector for steel-sheet piles that have to be attached together by gusset walls when used as circular cells. The connector can have different cross-sections and, due to its geometric shape, constitutes a rigid connector that can be cost-effectively manufactured by extrusion.
Description
- 2 ~ 7 ~1 ` ~-.
2 The invention concerns a connector for steel-sheet piling as 3 recited in the preamble to Claim 1. Cofferdams can be 4 constructed by building circular cells out of steel-sheet piling. The process can be carried out on land or in the 6 water. The main circular cells, however, must be separated 7 by secondary cells. The walls of the secondary cells are 8 called gusset walls. Two circular cells can be connected 9 only if they include one or more branching piles in the shape of a T or Y to secure the gusset walls.
12 Three types of branches are now on the market:
13 ;
14 those that are secured by rivets and screws, 16 those that re secured by welding, and 18 those that are composed of three half piles. ~ ;
21 In the riveted approach a conventional steel-sheet pile is 22 secured to a bent half stéel-sheet pile with rivets that have ~;
23 to be forced tight or with screws. This is a very labor-24 intensive and expensive manufacturing technique that only a few skilled workmen can handle today.
27 Producing a branch by securing a regular steel-sheet pile to 28 half a pile by welding is also cost-intensive and demands ;~
29 special finishing techniques.
2 ~1 ~ e~ 7 i~
1 The third approach to branching is a welded structure of 2 three half sheets welded at their ends to a round rod.
4 German OS 3 307 052 discloses a way of obtaining branches off of sheet-piling walls whereby the wall interlock is 6 svmmetrical with respect to its axis. This approach, 7 however, cannot be employed on circular cells with gusset 8 walls.
US Patent 3 688 508 discloses connectors for steel-sheet 11 piles manufactured by extrusion. These connectors, however, 12 are intended for a length of sheet-piling structural section 13 and are also not resistant to ramming.
German Patent 443 556 discloses a sheet-piling wall that 16 employs hollow piles consisting of two cold-rolled sheet 17 piles combined into a box. The sheet-piling box can be 18 rammed as is or completely or incompletely welded prior to 19 ramming if desired. This approach to producing sheet-piling 20 walls is very expensive and can also not be employed for -21 circular cells, flat cells, or gusset walls.
22 ~ i 23 Structural section with hollow spaces that extend 24 longitudinally can be derived from German OS 3 433 256. -Lengths of such section are employed to make simple shelves, 26 tables, and partitions.
28 The object of the present invention is a rigid connector with -29 a high moment of resistance for the least amount of material and an optimal distribution of forces that can stand up under 2 ~ 7'5 ;~
1 ramming and will be longer with no increase in weight.
3 This object is cost-effectively attained in accordance with 4 the invention by a special manufacturing process. A
connector that is provided with a higher moment of resistance 6 by the introduction of one or more bores or recess into its 7 cross-section and can accordingly withstand ramming can be 8 extruded in a single operation. The weight of the connector 9 is simultaneouisily decreased, leading to lower shipping costs and to a connector that is longer for the same amount of 11 material employed. A hollow structure will in this case 12 satisfy ever desired specification. The grain will be 13 optimally oriented throughout the section, tremendously 14 increasing the strength.
16 In one embodiment of the invention the cross-section of the ~;
17 connector is designed such that the walls in all areas are -~
18 approximately equally thick. This is attained by positioning 19 one or more bores or recesses along the central axis of the section to ensure that the tension invading the interlock 21 segments is distributed throughout the edges of the cross-22 section. This design simultaneously suppresses the 23 occurrence of additional moments in the section.
In the T connectors known up to now for example the forces 26 act on opposite sides and in the center. The result is a ;
27 moment in the connector when the force ratio is unbalanced, 28 resulting in lever arms. The additional moment is not 29 strictly necessary for the static equilibrium of the circular 30 cells, and torsion can occur in the corner connection. ; ;
i 2~ 3'~
1 The current invention eliminates these moments by means of a 2 shape that diverts force within the connector. The one or 3 more bores through the center distribute the forces that act 4 on the center as a result of the branching and simultaneously dissipate them through the edges. The result 6 is that the lever arms to the two lateral forces in the T
7 connector tend to zero. The design eliminates the moment.
8 The force distribution can be considered optimal.
The bore or recess in the connector increases the moment of 11 resistance while decreasing the weight.
13 A Y-shaped connector that branches at any possible angle can 14 be manufactured in addition to the T-shaped connector.
16 The method of manufacture also makes it possible to produce 17 connectors that allow different types of steel-sheet piles to 18 be connected. In this case the three interlock segments are 19 designed in accordance with the type of section employed to ensure that the piles will fit tightly.
22 The connector is hollow!to decrease its weight while 23 simultaneously increasing it moment of resistance.
Hollow section this long is not easy to handle from the 26 aspect of manufacturing technology. Extrusion, however, is a 27 cost-effective approach. Extruding steel with glass 28 lubrication by the Sejournet method is an economical solution 29 for the manufacturer. The same results cannot be obtained by 30 such conventional shaping processes as forging, rolling, ~ -, 2 i~
1 casting, etc.
3 The starting material is a round rolled or forged bar. The 4 face of the bars is milled to improve the flow of material.
The bar is simultaneously bored through. The length of the 6 bar is dictated by the weight per meter and overall length of 7 the section being manufactured. The connector is pressed in 8 a horizontal hydraulic press. The bars are heated to 9 approximately 1200 C in a rotary furnace. The bar rolls over a layer of powdered glass on the way from the furnace to 11 the press and becomes coated with a film of glass. The glass 12 prevents the bar from oxidizing on its way to the press and -~
13 also acts as an insulating layer between the inner surface of 14 the mold and the glowing bar. ~, 16 An automatic lift raises the bar to the level of the 17 receiver. The ram forces the bar into the cylindrical 18 opening in the mold, the exit from which contains a die. At 19 the commencement of the extrusion a disk of glass approximately 10 mm thick is positioned upstream of the die 21 to lubricate and protect it. The present invention has a 22 traveling arbor at the cénter of the die. The arbor is 23 needed to extrude the hollow section.
Once the blank has been inserted into the mold, the bar is 26 upset to the full diameter of the mold. As the ram increases 27 the pressure, the material leaves through the die with a 28 cross-section matching that of the die. The hollow section 29 must be extruded in batches because the arbor has to be advanced for the bore.
7 ~
1 Since all the material in one rod cannot be extruded out, the 2 butt is sawn off the sectioned rod once the mold has been 3 retracted. The section remaining on the butt forces the rod 4 out through the die as the mold travels. The released connector travels on over rollers.
7 Due to their high deformation temperature and bizarre cross-8 section, the lengths of section will tend to buckle during 9 the cooling process, often considerably. This distortion can be eliminated on a drawing bench with heads that can be 11 rotated in opposite senses.
13 Some embodiments of hollow connectors that can be 14 manufactured by the process just described will now be described with reference to the schematic drawings, wherein 17 Figure 1 is a section through a hollow T~shaped 18 connector engaged by three sheet piles, Figure 2 a section through a hollow Y-shaped 21 connector, 23 Figure 3 a section through a hollow connector with 24 a central bore, 26 Figure 4 a section through a hollow connector with ~ -27 differing interlock segments, 29 Figure 5 a section through a hollow connector with several recesses, and 2 ~ 3 7 L.~
1 Figure 6 a section through a hollow connector with 2 an irregular recess.
The connector illustrated in Figure 1 has a T-shaped cross-6 section, with the T relating to the sheet-piling walls to be 7 inserted into it. The interlock segments of steel-sheet 8 piles 1.1, 1.2, and 1.3 are loosely connected to the 9 interlocks in connector 2 in such a way that for example the fir.ger 9.1 on pile 1.1 engages an undercut 11 and 11 accommodates a cog 6.1 in the interlock segment of connector 12 2. The cog 8.1 on the sheet piling is located in the space 13 10.1 inside the interlock segment of connector 2 with the 14 finger 5.1 on the connector looped around it.
16 This connection is obtained by plugging steel-sheet pile 1.1 17 and connector 2 together. The connection is not, due to the 18 manufacturing tolerances and irregularities in the field of 19 application, directly interconnecting, and there is an empty space 13.1 between the cog 6.1 on connector 2 and steel-sheet 21 pile 1.1, as well as between the cog 8.1 on pile 1.`1 and 22 connector`2. Directly dpposite the aforesaid connection is 23 an identical connection to another steel-sheet pile 1.3 24 deriving from the circular cell. The requisite continuity with the gusset wall is provided by pile 1.2, which engages 26 connector 2 as already described.
27 ~ ;
28 Connector 2 has a T-shaped cross-section. The individual 29 interlock segments consist of a curved finger 5.1 that 30 demarcates a space 10.1 and is adjacent to a cog 6.1 ` ~ ;
- 7 - ;
2 ~ ~ ~t3'~
1 comprising two projections.
3 Between cog 6.1 and the interlock segment, at an angle of 90 4 to it, for attaching gusset wall 1.2 is a space 11 that allows looping on the part of finger 9.1 on pile 1.1 of cog 6 6.1. At another angle of 90 to pile 1.2, pile 1.3 engages 7 its associated interlock segment.
9 The walls of the section in this embodiment of a connector 2 are designedly approximately equally thick. There is 11 accordingly a concavity 7 opposite the interlock segment for 12 attaching pile 1.2. The outer surface of connector 2 is 13 rounded and ground. Running through the center of connector 14 2 is a bore 3. The bore powerfully decreases the moment of resistance of connector 2. Since flat sections have only 16 very low moments of resistance, overstress generally occurs 17 at the nodes in the operating state. This overstress, 18 provoked by additional moments, does not occur in the present 19 connector 2 because force is introduced without displacement.
As will be evident from Figure 1, the lines 4 of force extend 21 through the edges of connector 2 and accordingly shorten the 22 lever arms without affecting the distribution of force. If ~ ~
23 connector 2 did not have a bore 3 through the center, the -`
24 incident forces would act at the center. This action would be augmented by the relatively long lever arms, which would 26 produce an additional moment.
28 Figure 2 illustrates a hollow connector in the shape of a Y. ~-29 The third steel-sheet pile engages interlock segment 19 toward the forces acting along central axis 15 by way of the ~: , - 8 - -~
~ .3~ ~
1 central axis of branch 18 at an angle . Angle will vary 2 in accordance with circumstances. The recess 16 in the 3 center of the cross-section is associated with the particular 4 angle employed in such a way that the incoming forces are uniformly displaced into the edges by way of approximately 6 equal webs of material.
8 With a Y-shaped connector (Fig. 3) whereby the three steel-9 sheet piles 1.1, 1.2, and 1.3 involved are at an angle of 120 to one another, it is most practical to introduce a 11 circular bore 17 into the center of the section.
13 The connector illustrated in Figure 4 has different 14 interlock segments. Segments 20.1 and 20.2 are at an angle of 90 to each other and are identical in shape, meaning that 16 steel-sheet piles 1.2 and 1.3 of equal section engage the 17 segments. Interlock segment 21, however, contains a pile 1.4 18 with a different section. This connector also has a bore 3 19 that distributes the forces through the edges.
21 This invention makes it possible to manufacture cost-22 effective and ramming-resistant hollow connectors for all 23 cold- and hot-rolled sections currently on the market.
24 Rising shipping costs continue to play a decisive part in today's increasingly competitive market. The invention can 26 make a decisive contribution in this respect while 27 simultaneously increasing quality (higher moment of 28 resistance). This manufacturing approach moreover ensures an 29 optimal grain orientation. Furthermore, the reduction in weight allows longer connectors.
_ g _ ' ' '~
2 The invention concerns a connector for steel-sheet piling as 3 recited in the preamble to Claim 1. Cofferdams can be 4 constructed by building circular cells out of steel-sheet piling. The process can be carried out on land or in the 6 water. The main circular cells, however, must be separated 7 by secondary cells. The walls of the secondary cells are 8 called gusset walls. Two circular cells can be connected 9 only if they include one or more branching piles in the shape of a T or Y to secure the gusset walls.
12 Three types of branches are now on the market:
13 ;
14 those that are secured by rivets and screws, 16 those that re secured by welding, and 18 those that are composed of three half piles. ~ ;
21 In the riveted approach a conventional steel-sheet pile is 22 secured to a bent half stéel-sheet pile with rivets that have ~;
23 to be forced tight or with screws. This is a very labor-24 intensive and expensive manufacturing technique that only a few skilled workmen can handle today.
27 Producing a branch by securing a regular steel-sheet pile to 28 half a pile by welding is also cost-intensive and demands ;~
29 special finishing techniques.
2 ~1 ~ e~ 7 i~
1 The third approach to branching is a welded structure of 2 three half sheets welded at their ends to a round rod.
4 German OS 3 307 052 discloses a way of obtaining branches off of sheet-piling walls whereby the wall interlock is 6 svmmetrical with respect to its axis. This approach, 7 however, cannot be employed on circular cells with gusset 8 walls.
US Patent 3 688 508 discloses connectors for steel-sheet 11 piles manufactured by extrusion. These connectors, however, 12 are intended for a length of sheet-piling structural section 13 and are also not resistant to ramming.
German Patent 443 556 discloses a sheet-piling wall that 16 employs hollow piles consisting of two cold-rolled sheet 17 piles combined into a box. The sheet-piling box can be 18 rammed as is or completely or incompletely welded prior to 19 ramming if desired. This approach to producing sheet-piling 20 walls is very expensive and can also not be employed for -21 circular cells, flat cells, or gusset walls.
22 ~ i 23 Structural section with hollow spaces that extend 24 longitudinally can be derived from German OS 3 433 256. -Lengths of such section are employed to make simple shelves, 26 tables, and partitions.
28 The object of the present invention is a rigid connector with -29 a high moment of resistance for the least amount of material and an optimal distribution of forces that can stand up under 2 ~ 7'5 ;~
1 ramming and will be longer with no increase in weight.
3 This object is cost-effectively attained in accordance with 4 the invention by a special manufacturing process. A
connector that is provided with a higher moment of resistance 6 by the introduction of one or more bores or recess into its 7 cross-section and can accordingly withstand ramming can be 8 extruded in a single operation. The weight of the connector 9 is simultaneouisily decreased, leading to lower shipping costs and to a connector that is longer for the same amount of 11 material employed. A hollow structure will in this case 12 satisfy ever desired specification. The grain will be 13 optimally oriented throughout the section, tremendously 14 increasing the strength.
16 In one embodiment of the invention the cross-section of the ~;
17 connector is designed such that the walls in all areas are -~
18 approximately equally thick. This is attained by positioning 19 one or more bores or recesses along the central axis of the section to ensure that the tension invading the interlock 21 segments is distributed throughout the edges of the cross-22 section. This design simultaneously suppresses the 23 occurrence of additional moments in the section.
In the T connectors known up to now for example the forces 26 act on opposite sides and in the center. The result is a ;
27 moment in the connector when the force ratio is unbalanced, 28 resulting in lever arms. The additional moment is not 29 strictly necessary for the static equilibrium of the circular 30 cells, and torsion can occur in the corner connection. ; ;
i 2~ 3'~
1 The current invention eliminates these moments by means of a 2 shape that diverts force within the connector. The one or 3 more bores through the center distribute the forces that act 4 on the center as a result of the branching and simultaneously dissipate them through the edges. The result 6 is that the lever arms to the two lateral forces in the T
7 connector tend to zero. The design eliminates the moment.
8 The force distribution can be considered optimal.
The bore or recess in the connector increases the moment of 11 resistance while decreasing the weight.
13 A Y-shaped connector that branches at any possible angle can 14 be manufactured in addition to the T-shaped connector.
16 The method of manufacture also makes it possible to produce 17 connectors that allow different types of steel-sheet piles to 18 be connected. In this case the three interlock segments are 19 designed in accordance with the type of section employed to ensure that the piles will fit tightly.
22 The connector is hollow!to decrease its weight while 23 simultaneously increasing it moment of resistance.
Hollow section this long is not easy to handle from the 26 aspect of manufacturing technology. Extrusion, however, is a 27 cost-effective approach. Extruding steel with glass 28 lubrication by the Sejournet method is an economical solution 29 for the manufacturer. The same results cannot be obtained by 30 such conventional shaping processes as forging, rolling, ~ -, 2 i~
1 casting, etc.
3 The starting material is a round rolled or forged bar. The 4 face of the bars is milled to improve the flow of material.
The bar is simultaneously bored through. The length of the 6 bar is dictated by the weight per meter and overall length of 7 the section being manufactured. The connector is pressed in 8 a horizontal hydraulic press. The bars are heated to 9 approximately 1200 C in a rotary furnace. The bar rolls over a layer of powdered glass on the way from the furnace to 11 the press and becomes coated with a film of glass. The glass 12 prevents the bar from oxidizing on its way to the press and -~
13 also acts as an insulating layer between the inner surface of 14 the mold and the glowing bar. ~, 16 An automatic lift raises the bar to the level of the 17 receiver. The ram forces the bar into the cylindrical 18 opening in the mold, the exit from which contains a die. At 19 the commencement of the extrusion a disk of glass approximately 10 mm thick is positioned upstream of the die 21 to lubricate and protect it. The present invention has a 22 traveling arbor at the cénter of the die. The arbor is 23 needed to extrude the hollow section.
Once the blank has been inserted into the mold, the bar is 26 upset to the full diameter of the mold. As the ram increases 27 the pressure, the material leaves through the die with a 28 cross-section matching that of the die. The hollow section 29 must be extruded in batches because the arbor has to be advanced for the bore.
7 ~
1 Since all the material in one rod cannot be extruded out, the 2 butt is sawn off the sectioned rod once the mold has been 3 retracted. The section remaining on the butt forces the rod 4 out through the die as the mold travels. The released connector travels on over rollers.
7 Due to their high deformation temperature and bizarre cross-8 section, the lengths of section will tend to buckle during 9 the cooling process, often considerably. This distortion can be eliminated on a drawing bench with heads that can be 11 rotated in opposite senses.
13 Some embodiments of hollow connectors that can be 14 manufactured by the process just described will now be described with reference to the schematic drawings, wherein 17 Figure 1 is a section through a hollow T~shaped 18 connector engaged by three sheet piles, Figure 2 a section through a hollow Y-shaped 21 connector, 23 Figure 3 a section through a hollow connector with 24 a central bore, 26 Figure 4 a section through a hollow connector with ~ -27 differing interlock segments, 29 Figure 5 a section through a hollow connector with several recesses, and 2 ~ 3 7 L.~
1 Figure 6 a section through a hollow connector with 2 an irregular recess.
The connector illustrated in Figure 1 has a T-shaped cross-6 section, with the T relating to the sheet-piling walls to be 7 inserted into it. The interlock segments of steel-sheet 8 piles 1.1, 1.2, and 1.3 are loosely connected to the 9 interlocks in connector 2 in such a way that for example the fir.ger 9.1 on pile 1.1 engages an undercut 11 and 11 accommodates a cog 6.1 in the interlock segment of connector 12 2. The cog 8.1 on the sheet piling is located in the space 13 10.1 inside the interlock segment of connector 2 with the 14 finger 5.1 on the connector looped around it.
16 This connection is obtained by plugging steel-sheet pile 1.1 17 and connector 2 together. The connection is not, due to the 18 manufacturing tolerances and irregularities in the field of 19 application, directly interconnecting, and there is an empty space 13.1 between the cog 6.1 on connector 2 and steel-sheet 21 pile 1.1, as well as between the cog 8.1 on pile 1.`1 and 22 connector`2. Directly dpposite the aforesaid connection is 23 an identical connection to another steel-sheet pile 1.3 24 deriving from the circular cell. The requisite continuity with the gusset wall is provided by pile 1.2, which engages 26 connector 2 as already described.
27 ~ ;
28 Connector 2 has a T-shaped cross-section. The individual 29 interlock segments consist of a curved finger 5.1 that 30 demarcates a space 10.1 and is adjacent to a cog 6.1 ` ~ ;
- 7 - ;
2 ~ ~ ~t3'~
1 comprising two projections.
3 Between cog 6.1 and the interlock segment, at an angle of 90 4 to it, for attaching gusset wall 1.2 is a space 11 that allows looping on the part of finger 9.1 on pile 1.1 of cog 6 6.1. At another angle of 90 to pile 1.2, pile 1.3 engages 7 its associated interlock segment.
9 The walls of the section in this embodiment of a connector 2 are designedly approximately equally thick. There is 11 accordingly a concavity 7 opposite the interlock segment for 12 attaching pile 1.2. The outer surface of connector 2 is 13 rounded and ground. Running through the center of connector 14 2 is a bore 3. The bore powerfully decreases the moment of resistance of connector 2. Since flat sections have only 16 very low moments of resistance, overstress generally occurs 17 at the nodes in the operating state. This overstress, 18 provoked by additional moments, does not occur in the present 19 connector 2 because force is introduced without displacement.
As will be evident from Figure 1, the lines 4 of force extend 21 through the edges of connector 2 and accordingly shorten the 22 lever arms without affecting the distribution of force. If ~ ~
23 connector 2 did not have a bore 3 through the center, the -`
24 incident forces would act at the center. This action would be augmented by the relatively long lever arms, which would 26 produce an additional moment.
28 Figure 2 illustrates a hollow connector in the shape of a Y. ~-29 The third steel-sheet pile engages interlock segment 19 toward the forces acting along central axis 15 by way of the ~: , - 8 - -~
~ .3~ ~
1 central axis of branch 18 at an angle . Angle will vary 2 in accordance with circumstances. The recess 16 in the 3 center of the cross-section is associated with the particular 4 angle employed in such a way that the incoming forces are uniformly displaced into the edges by way of approximately 6 equal webs of material.
8 With a Y-shaped connector (Fig. 3) whereby the three steel-9 sheet piles 1.1, 1.2, and 1.3 involved are at an angle of 120 to one another, it is most practical to introduce a 11 circular bore 17 into the center of the section.
13 The connector illustrated in Figure 4 has different 14 interlock segments. Segments 20.1 and 20.2 are at an angle of 90 to each other and are identical in shape, meaning that 16 steel-sheet piles 1.2 and 1.3 of equal section engage the 17 segments. Interlock segment 21, however, contains a pile 1.4 18 with a different section. This connector also has a bore 3 19 that distributes the forces through the edges.
21 This invention makes it possible to manufacture cost-22 effective and ramming-resistant hollow connectors for all 23 cold- and hot-rolled sections currently on the market.
24 Rising shipping costs continue to play a decisive part in today's increasingly competitive market. The invention can 26 make a decisive contribution in this respect while 27 simultaneously increasing quality (higher moment of 28 resistance). This manufacturing approach moreover ensures an 29 optimal grain orientation. Furthermore, the reduction in weight allows longer connectors.
_ g _ ' ' '~
Claims (10)
1. An extruded rigid connector for sheet steel piles and for joining three piles to connect branches or to con-nect main cells together or to gusset walls, comprising:
three integrated interlock segments for attaching the piles to the connector; said connector having a hollow structural section with at least one central bore extending along the entire length of said structural section and having recesses matching outer contours of said connector; said connector having edges for conducting away tensile forces of said at-tached piles, additional moments arising in said connector tending towards zero through a line of force field.
three integrated interlock segments for attaching the piles to the connector; said connector having a hollow structural section with at least one central bore extending along the entire length of said structural section and having recesses matching outer contours of said connector; said connector having edges for conducting away tensile forces of said at-tached piles, additional moments arising in said connector tending towards zero through a line of force field.
2. A rigid connector as defined in Claim 1, wherein said connector has walls that are substantially uniformly thick throughout their cross-section.
3. A rigid connector as defined in Claim 1, wherein said structural section has a plurality of recesses.
4. A rigid connector as defined in Claim 1, wherein said interlock segments extend entirely along said connector;-
5. A rigid connector as defined in Claim 1, wherein said interlock segments intersect in a T-shape.
6. A rigid connector as defined in Claim 1, wherein said interlock segments intersect in a Y-shape.
7. A rigid connector as defined in Claim 1, wherein said interlock segments intersect at a predetermined angle.
8. A rigid connector as defined in Claim 1, wherein said connector can attach together sheet steel piles having different structural sections and interlocks.
9. A rigid connector as defined in Claim 1, wherein said main cells have a circular shape.
10. A rigid connector as defined in Claim 1, wherein said main cells have a flat shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3907348 | 1989-03-08 | ||
| DE19893907348 DE3907348A1 (en) | 1989-03-08 | 1989-03-08 | Flexurally rigid connecting element and method of producing it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2010574A1 true CA2010574A1 (en) | 1990-09-08 |
Family
ID=6375754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2010574 Abandoned CA2010574A1 (en) | 1989-03-08 | 1990-02-21 | Bend-resistant connecting element and method for making the same |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2010574A1 (en) |
| DE (1) | DE3907348A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19711242A1 (en) * | 1997-03-18 | 1998-10-01 | Krupp Ag Hoesch Krupp | Compound lock and sheet pile |
| DE19716685C2 (en) * | 1997-04-21 | 2000-10-19 | Georg Wall | Connecting element for sheet piles |
| DE19725143C2 (en) | 1997-06-13 | 2000-09-21 | Georg Wall | Connecting element for sheet piles |
| DE19822997C2 (en) * | 1998-05-22 | 2000-09-14 | Georg Wall | Connecting element for sheet piles |
| WO2000028157A1 (en) * | 1998-11-10 | 2000-05-18 | Georg Wall | Connecting element for pile-planks |
| US6428244B1 (en) | 2000-07-21 | 2002-08-06 | Georg Wall | Connecting element for sheet piles |
| DE10107374C1 (en) * | 2001-02-16 | 2002-10-24 | Georg Wall | Lock joint for piles has channel section on one pile to receive rail on adjacent pile and with fluid expanded seal inside channel |
| US7168214B2 (en) | 2002-08-27 | 2007-01-30 | Georg Wall | Two-piece joining device for sheet pile retaining walls |
| DE202004018659U1 (en) | 2003-12-10 | 2005-03-10 | Pilepro Llc | Connecting element for sheet piles |
| DE102006000623A1 (en) | 2005-08-09 | 2007-02-22 | Pilepro Llc | Arrangement of sheet pile sections |
| DE202006021127U1 (en) * | 2005-08-09 | 2012-11-23 | Pilepro Llc | Arrangement of sheet pile sections |
| DE102006000624A1 (en) | 2005-08-09 | 2007-02-22 | Pilepro Llc | Connecting profile for connecting together three sheet pile wall components and arrangement of sheet pile wall components with such a connection profile |
| DE102006060811A1 (en) * | 2006-12-21 | 2008-06-26 | Pilepro Llc | Connecting profile for interconnecting sheet piles |
| DE102007027940A1 (en) * | 2007-06-18 | 2008-12-24 | Pilepro Llc | Connecting element and sheet pile wall with such a connecting element |
| CA2827243A1 (en) | 2011-04-21 | 2012-10-26 | Pilepro Llc | Universal connecting element for sheet pile wall components |
| JP2016118030A (en) * | 2014-12-19 | 2016-06-30 | 太陽工業株式会社 | Box-shaped sandbag |
| DE102020106331A1 (en) * | 2020-03-09 | 2021-09-09 | Gooimeer BV | Thermally active sheet pile interlock profile |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE443556C (en) * | 1927-05-03 | Karl Pahl | Iron sheet piling with built-in hollow piles | |
| FR1388060A (en) * | 1963-12-26 | 1965-02-05 | Lorraine Escaut Sa | connecting elements, in particular for assembling sheet piles |
| US3688508A (en) * | 1970-10-21 | 1972-09-05 | United States Steel Corp | Sheet piling connectors |
| DE3433256A1 (en) * | 1984-09-11 | 1986-03-20 | Hans Josef Kitz Maschinenbau, 5210 Troisdorf | Construction profile |
-
1989
- 1989-03-08 DE DE19893907348 patent/DE3907348A1/en not_active Ceased
-
1990
- 1990-02-21 CA CA 2010574 patent/CA2010574A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE3907348A1 (en) | 1990-09-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |