EP0480093A1 - Unité d'étançonnage pour tranchées dans la terre - Google Patents
Unité d'étançonnage pour tranchées dans la terre Download PDFInfo
- Publication number
- EP0480093A1 EP0480093A1 EP90119568A EP90119568A EP0480093A1 EP 0480093 A1 EP0480093 A1 EP 0480093A1 EP 90119568 A EP90119568 A EP 90119568A EP 90119568 A EP90119568 A EP 90119568A EP 0480093 A1 EP0480093 A1 EP 0480093A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shoring
- load distribution
- cross
- relevant
- plate
- 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.)
- Withdrawn
Links
- 239000002689 soil Substances 0.000 title abstract 2
- 238000009826 distribution Methods 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 7
- 238000005452 bending Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
- E02D17/083—Shoring struts
Definitions
- the invention relates to a shoring unit for trenches in the ground.
- trench shoring units are known which, after the trench has been excavated, are lowered into the interior of the trench from above. There are several shoring units one behind the other along the trench. After carrying out the cable laying work, the shoring units are lifted up again and the trench is filled again.
- Known shoring units essentially consist of a first shoring plate, a second shoring plate and a plurality of cross supports which keep the two shoring plates at a distance.
- Shoring units are known in which the cross supports are connected in an articulated manner to the shoring panels and springs are provided which elastically restrict deflection of the cross supports from their direction of extension, which is normally substantially perpendicular to the planes of the shoring panels.
- the invention has for its object to provide a trench sheeting unit which is functionally and in terms of production cheaper with regard to the connection of the cross supports to the shoring panels and with regard to the spring arrangement.
- the invention provides a shoring unit for trenches in the ground, comprising a first shoring plate, a second shoring plate and transverse supports which keep the two shoring plates at a distance and are articulated to the shoring plates, springs being provided to limit the deflection of the cross supports are characterized in that the cross supports are each connected to the two mounting plates by means of load distribution brackets which are fastened to the relevant mounting plate and have a spherical bearing for the relevant cross support, and that at least one spring is attached to the cross supports on at least one of the two load distribution consoles is provided, which is installed between a spring connection point of the console and an end region of the cross support in question, the cross support end region being located between the respective articulated bearing and the relevant shoring plate.
- the load distribution brackets fulfill a double function in that they distribute the loads over a larger — preferably essentially vertically extending — area into the relevant shoring plate and in that they are accommodation components for the springs.
- the load distribution brackets according to the invention it is possible to work with shoring panels which have no vertical bracing members, the load distribution brackets being fastened directly to the inside of the shoring panels; however, the invention is not limited to this. It is favorable if the load distribution brackets each have a length in the vertical direction that is at least 20% of the height of the shoring unit.
- each of the cross supports is provided on only one of the two load distribution consoles or on both load distribution consoles, which springs extend in opposite directions from said cross support end region.
- a spring per transverse support on one of the two load distribution brackets, which restricts deflection of the cross support in a first deflection direction, and on the other of the two load distribution consoles, a spring which restricts deflection of the cross support in a second deflection direction.
- the load distribution brackets preferably have a substantially triangular or trapezoidal shape, as seen in the longitudinal direction of the shoring unit, their base side being adjacent to the shoring plate in question.
- the essentially triangular or trapezoidal shape provides an optimal load distribution effect to the relevant shoring plate and avoids unnecessary load distribution bracket lengths in the area of the spherical plain bearing.
- the load distribution brackets can be manufactured from thick sheet steel in a manner that is favorable to production.
- the shoring unit 2 shown in Fig. 1 consists essentially of a left in Fig. 1, first shoring plate 4, a right in Fig. 1, second shoring plate 6, a lower row of cross supports 8, a middle row of cross supports 8, an upper Row of cross supports 8 and load distribution brackets 10, in each case between a cross support 8 and a shoring plate 4 or 6.
- the shoring plates 4 and 6 extend essentially vertically and the cross supports 8 essentially horizontally.
- the shoring unit 2 can have the vertical dimension shown, but could also be extended further upwards or shorter at the top than shown in FIG. 1.
- the shoring unit 2 has two cross supports 8 in each row, which - seen in plan view - are provided quite close to the ends of the shoring unit 2. In particular with longer shoring units 2, there may also be more cross supports 8 per row of cross supports.
- Each of the cross supports 8 consists of a first support section 8a on the left in FIG. 1 and a shorter second support section 8b on the right in FIG. 1, which are essentially identical to one another.
- Each of the support sections 8a and 8b has a base part 12 and a spindle part 14.
- the base part 12 is provided with an internal thread in its end region 16 facing the center of the shoring unit 2, while the spindle part 14 is provided with an external thread over at least part of its length.
- the two spindle parts 14 of the two support sections 8a and 8b are firmly connected to one another approximately centrally by a flange connection 18.
- a left-hand thread is provided for the support section 8a and a right-hand thread is provided for the support section 8b, or vice versa.
- the two shoring plates 4 and 6 can be brought to a smaller or larger mutual distance. This serves, in particular, to be able first to sink the shoring unit 2 into a dug trench with play and then to be able to bring it to the ditch wall at a greater distance in the manner described, with the two shoring panels 4 and 6 resting on the outside.
- the load distribution brackets 10 are essentially triangular in the direction of view in FIG. 1, the significantly longer base side 20 abutting the inside of the shoring plate 4 and the load distribution bracket 10 being fastened to the shoring plate 4 by means of screws 22. What has been said with regard to shape and attachment to the shoring plate 4 also applies to the right load distribution brackets 10 in FIG. 1. In the direction of view along the transverse supports 8, the load distribution brackets 10 have essentially the shape of an upright, narrow rectangle.
- the load distribution brackets 10 are made of thick sheet steel, namely from two essentially triangular cheek plates 24 and a transverse plate 26 welded in between them, essentially corresponding to the legs of the triangle, which is interrupted in the region of the triangle tip, so that two identical transverse plate sections are formed.
- the central edges 27 of the cross plate sections form stops for maximum swiveling out movements of the cross supports 8.
- the cheek plates 24 are parallel to the plane of the drawing in FIG. 1, while the plane of the cross plate 26 is perpendicular to the plane of the drawing.
- the load distribution brackets 10 are open on the outside of the relevant mounting plate 4 or 6.
- each load distribution console 10 has a spherical bearing 28. There, the end region of the base part 12 of the relevant support section 8a or 8b is connected in an articulated manner.
- the support sections 8a and 8b are extended over the area of the articulated connection to the load distribution console 10 in question by means of the articulated bearing 28 into the interior of the load distribution console 10 concerned.
- a tab 30 pointing upwards and a tab 30 pointing downwards.
- a coil spring 32 is installed between each of the tabs 30 and the upper or lower end region of the load distribution console 10 in question.
- the tension springs 32 thus extend essentially vertically and are fastened at one end to a tab 30 and at the other end from the inside to the transverse plate 26 of the load distribution bracket 10 in question, which is shaped like a step there. If the cross support 8 under consideration in FIG. 2 pivots clockwise relative to the first shoring plate 4 is deflected, the lower coil spring 32 is stretched elastically; when deflected counterclockwise, the upper coil spring 32 is stretched elastically.
- the springs 32 can be installed with tension.
- Each shoring plate 4 or 6 consists of four interconnected sections one above the other, but could also have further or fewer sections.
- Each load distribution console takes up about 70% of the height of the assigned section, with no cross support being assigned to the lowest section.
- the drawn shoring panels 4 and 6 are of a new construction. They are made overall of thick steel sheet and essentially consist of an outside, flat sheet 40, an inside sheet 42 and - arranged between the sheets 40 and 42 - a zigzag-shaped intermediate sheet 44.
- the inside sheet 42 is, with the exception of his lower end area flat and parallel to the outside sheet metal 40. In the lower end area, the inside sheet metal 42 extends at an acute angle to the outside sheet metal 40, so that a cutting edge 46 is formed there.
- the intermediate plate 44 is oriented such that its bending edges 48 run in the longitudinal direction of the shoring unit 2, that is to say perpendicular to the plane of the drawing in FIG. 1.
- a partial length of the intermediate plate 44 has been cut away so that the outer plate 40 can be seen.
- a larger part of the inside plate 42 is cut away so that the intermediate plate 44 and the outside plate 40 can be seen.
- the areas of the intermediate plate 44 drawn in black are those which run towards the viewer from the rear in FIG. 2 to the front in FIG. 2.
- the construction of the shoring plate 4 or 6 thus represents a lattice girder, which absorbs the bending loads acting on the outside due to the external pressure and the load distribution brackets 10 with a low use of material. If you consider the shoring plate 4 or 6 in a horizontal section, you have the configuration of a box girder, which takes the introduced bending load in the distance between the cross supports 8 of a considered row of cross supports 8 with minimal use of material. Due to the construction of the shoring panels 4 and 6, stiffening supports of the shoring panel can be dispensed with.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Connection Of Plates (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90119568A EP0480093A1 (fr) | 1990-10-12 | 1990-10-12 | Unité d'étançonnage pour tranchées dans la terre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90119568A EP0480093A1 (fr) | 1990-10-12 | 1990-10-12 | Unité d'étançonnage pour tranchées dans la terre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0480093A1 true EP0480093A1 (fr) | 1992-04-15 |
Family
ID=8204609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90119568A Withdrawn EP0480093A1 (fr) | 1990-10-12 | 1990-10-12 | Unité d'étançonnage pour tranchées dans la terre |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0480093A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2257881A1 (de) * | 1972-11-25 | 1974-05-30 | Josef Emunds | Verbauvorrichtung zum abstuetzen von grabenwaenden |
| FR2378155A1 (fr) * | 1977-01-24 | 1978-08-18 | Krings Josef | Patin pour etresillon de soutenement de fouilles |
| EP0167991A2 (fr) * | 1984-07-13 | 1986-01-15 | Benno Domesle | Dispositif de tête à pivot pour l'assemblage articulé et en tout temps démontable d'un étrésillon de tranchée à une paroi de blindage |
-
1990
- 1990-10-12 EP EP90119568A patent/EP0480093A1/fr not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2257881A1 (de) * | 1972-11-25 | 1974-05-30 | Josef Emunds | Verbauvorrichtung zum abstuetzen von grabenwaenden |
| FR2378155A1 (fr) * | 1977-01-24 | 1978-08-18 | Krings Josef | Patin pour etresillon de soutenement de fouilles |
| EP0167991A2 (fr) * | 1984-07-13 | 1986-01-15 | Benno Domesle | Dispositif de tête à pivot pour l'assemblage articulé et en tout temps démontable d'un étrésillon de tranchée à une paroi de blindage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE ES FR GB IT LI SE |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19921016 |