EP1370730A1

EP1370730A1 - Building board for trench shuttering

Info

Publication number: EP1370730A1
Application number: EP02727255A
Authority: EP
Inventors: Dirk Richter
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-21
Filing date: 2002-03-20
Publication date: 2003-12-17
Also published as: BG64424B1; CZ20032544A3; PL363868A1; HUP0303017A3; HUP0303017A2; WO2002077373A1; DE10113818A1; BG108176A

Abstract

A building board (31) for trench shuttering is disclosed, comprising an essentially rectangular frame (32) made from profile steel and cladding sheets (33) welded to both sides of the frame for protecting the walls of a trench (1) for a line. According to the invention, one and the same building board may be used unaltered for both stall shuttering and slide rail shuttering, whereby the building board is provided with brace holders (38) for stall construction which are completely recessed in the board and which can be operated from a vertical board edge. Furthermore, coupling rails (34) are provided on the vertical board edges for use in slide rail shuttering, whereby the coupling rails have holes (36) in those places adjacent to the brace holders.

Description

"Building board for trench shoring"

Description:

The invention relates to a building board for trench shoring for securing the walls of a cable trench with an essentially rectangular frame spar made of profiled steel and on both sides of the frame spanned by the frame spar, preferably welded on, covering sheets or cover sheets.

A building board of this type is described in DE-AS 22 30 395. This board has a substantially rectangular, stiffening frame spar, which is intended to stabilize the entire board when it is driven into the floor and pulled out of the floor without twisting and to guarantee that the board after Installation can withstand the earth pressure.

The building boards facing each other in the trench on the trench walls are supported against one another by spacers. In trench shoring, a distinction is made between box shoring (see, for example, DE 198 13 282 A1) and slide rail shoring (see, for example, DE-AS 20 21 928). In the case of box shoring, the spacers are designed as spreaders which are pivotable relative to the surface of the building boards about essentially horizontal axes. In the case of slide rail shoring, a stiff frame is preferably provided as a spacer, which overall can be displaced vertically displaceably relative to the building boards, so that the building boards facing each other on the trench walls are simultaneously lowered and raised. In the case of slide rail shoring, vertical slide rails are used on both trench walls at a mutual distance from the horizontally measured plate width. In the longitudinal direction of the trench wall (back-to-back), the slide rails have sliding profiles facing away from each other - short (e.g. U- or C-shaped) box profiles - into the correspondingly shaped coupling edges, e.g. with T-shaped rails, which are attached to the vertical edges of the Building boards are molded, inserted from top to bottom. In the case of deep trenches, slide rails with two (or more) box profiles lying next to one another are provided in such a way that a correspondingly large number of building boards are, as it were, telescopically displaced to be driven into the trench in such a way that the distance between the boards opposite one another on the trench walls gradually decreases with the depth of the trench. The building boards of each trench wall are then telescopically offset from each other, but they should be as close to each other as possible (on each wall) so that the trench lining itself does not take up too much space or requires excavation. For this reason, building boards with a smooth outer surface on both sides are preferred in slide rail installation.

In the box shoring, several, e.g. four shots (each for a straddle). In the recordings, the spreaders are pivotally mounted about a horizontal axis running parallel to the plate plane, so that the two opposing plates can be driven alternately downwards or pulled out upwards.

For the assembly and disassembly of the struts in box shoring, bolt couplings are preferred. In DE 4 111 266 C1 such spreader receptacles are described which are accommodated in the frame spar, in the area between the cladding sheets. To handle the associated pin coupling, recesses of the cladding plates are provided on both sides of the spar in the building board so that the pins to be inserted or removed can be reached at all. By installing the Bolt coupling in the spar is weakened considerably. A further weakening of the plate is caused by the recesses in the cladding panel adjacent to the spar. Such plates cannot withstand heavy loads in practice.

For this reason, in accordance with EP 0 781 360 B1, building plateaus with spreader receptacles have been created for box shoring, which are embedded in the plate in the area adjacent to a spar (on the inside, i.e. in the direction of the plate center). In this case, collars (with perforations for inserting the respective bolts) are provided for handling the bolt coupling, which protrude beyond the adjacent surface of the cladding plate.

The panels according to the aforementioned EP 0 781 360 B1, which are preferred for box shoring in themselves, can only be used to a limited extent because of the protrusions protruding from the panel surface in the case of sliding rail shoring with a plurality of construction panels to be inserted telescopically. For the building contractor, sheeting is a significant part of the business assets, and it is important to make extensive use of the existing equipment. It would therefore be very desirable to keep the number of types as small as possible and the applicability of the existing building boards to be as versatile as possible, i.e. at least both

Box shoring as well as in slide rail shoring to be provided.

The invention has for its object to provide a shoring panel which, as it is, can be used both in box shoring and in slide rail shoring. The advantages of the stable, secure and easily mountable mounting of the swiveling spreaders, e.g. according to EP 0 781 360 B1, can be obtained in box shoring as well as the preferred telescopic arrangement for sliding rail shoring for easier driving in and pulling out the building boards.

The solution according to the invention for the type specified at the outset is that the building board has both receptacles with a releasable pin coupling Swiveling fastening of struts around approximately horizontal axes in the box shoring as well as on their vertical edges - But outside the same - are provided and that the coupling rails in the area adjacent to the respective spreader receptacle each have a mounting gap with space for handling the bolt coupling from the vertical edge. Some improvements and further refinements of the invention are specified in the subclaims.

The invention creates a building board which - as it is - can be used both in box shoring and slide rail shoring. The pin coupling of the receptacles for the pivotable spreaders is operated from an adjacent vertical edge of the respective building board. The respective bolt, which runs parallel to or in the horizontal spreading pivot axis, and the associated bores are located within the space spanned between the cladding sheets of the respective building board. They are directly adjacent to a frame spar, so that the spreader mount is supported on the spar without weakening the spar itself.

In the context of the invention, the respective spreader receptacle can adjoin a spar in the interior space of the plate which is surrounded / framed by the frame spar or can be welded to an outer edge of the spar, preferably between two surfaces or edge regions of the cladding plates projecting beyond the spar. In the former case, the bolts required for coupling the respective spreaders are pushed into the receptacle through a hole in the respective spar. The spar is not noticeably pivoted as a result, since the bore is in a - in terms of stability - neutral plane of the spar with regard to possible frame loads. In the other case, the spar itself is not affected at all because of the respective bolt (without touching the spar) immediately from the vertical edge.

A building board for the slide rail shoring needs coupling rails on its vertical edges, e.g. in T-shape, which are to be inserted into the slide rails from top to bottom. These rails would in themselves represent an obstacle to handling the aforementioned pin coupling. According to the invention, however, a mounting gap is left in the respective coupling rail at the points at which the pin coupling is provided. The gap should be so large that the coupling rail no longer hinders the handling of the coupling bolts. In practice, gaps of the order of perhaps 50 mm are sufficient. Such gaps - with a total length of the rail of generally more than 1000 mm - pose no problem either during installation or with regard to the stability of the mounting of the building board in the slide rail installation.

Details of the invention are explained on the basis of the schematic representation of an exemplary embodiment. Show it:

Figure 1 is a vertical section through a box shoring.

2 shows a horizontal section through a slide rail shoring;

3 shows a perspective view of a building board according to the invention; and FIG. 4 shows a section along the line IV-IV of FIG. 3.

1 consists of pairs of building boards 2 facing each other in the trench 1, which are kept at a distance by means of spreaders 3 and prevent the soil 4 from falling into the trench on both sides of the trench 1. On the trench floor 5, the building boards can have 2 cutting edges 6. The spreaders 3 can have clamping means 7, approximately in the middle of their length. The spreaders can also be formed in any other usual way. They are to be mounted in each of the building boards 2 in receptacles 8 so as to be pivotable about approximately horizontal axes 9 running parallel to the board plane become. The receptacles 8 should lie with all the parts belonging to the respective building board 2 in the area between the two cover plates 10 of the board, so that when the respective strut 3 is loosened, only a hole in the place of the receptacle 8, but no protrusion beyond that Trench 1 facing inner cover plate 10 remains.

For coupling the struts 3 in a receptacle 8, a bolt 11 can be used, which is to be inserted into the receptacle 8 - approximately horizontally - from a vertical plate edge (see number 35 in FIG. 3). In Fig. 1 it is also shown how the individual spreader 3 is pivoted about the axis 9 in the receptacle 8 when the building boards 2 are driven one after the other into the ground. The dashed parts of FIG. 1 show an example of how one building board 2 is first pressed down relative to the other building board 2. The spreaders 3 in the two building boards 2 are pivoted about the axis 9.

In Fig. 2, a horizontal section through a trench 1 with slide rail shoring is shown. In the exemplary embodiment according to FIG. 2, two building panels 21, 22 are accommodated telescopically offset in slide rails 23 on each trench wall 20 adjacent to the ground 4. For this purpose, the building boards 21, 22 have on their vertical board edges 24 T-shaped coupling rails 25 which are pushed into vertical C-profiles 26 from top to bottom. The profiles 26 are fastened to one another on the slide rails 23 in a horizontal direction transverse to the longitudinal direction of the trench. The slide rails 23 of a trench wall are supported with the aid of spacers 27 on identical slide rails of the other trench wall. The spacers 27 can be designed in a similar manner to the spreaders 3 according to FIG. 1. The spacers can, however, according to FIG. 2 also be united in a vertically stiffened rectangular frame and supported on its vertical edges 28 on frame slide rails 29 provided on the slide rails 23 such that the two opposite slide rail pairs 23 and so that the building boards of both trench walls at the same time relative to the spacer frame and Trench floor to be moved in the vertical direction. The frame slide rails 29 are preferably provided on the sides of the slide rails 23 facing each other in the trench 1.

The building boards 21, 22 according to FIG. 2 should have as far as possible no projections on their cover plates 10 which could hinder a relative movement of the boards 21 and 22 in the guides of the C-profiles 26.

3 shows an exemplary embodiment of a building board 31 according to the invention. It essentially consists of a frame spar 32 which stiffens the entire board 31 and cover plates 33 welded onto the two surfaces of the frame spar. T- are attached to the vertical side edges 35 of the building board 31. Rails 34 welded to the lower end of the vertical T-line, so that the T-cross line is approximately parallel to the vertical plate edge 35. In principle, the rails 34 are to be designed in the way that is customary in practice in slide rail installation. According to the invention, however, the T-rails 34 have gaps 36 at the points at which a bolt 37 in an approximately horizontal direction parallel to the cover plates 33 from one of the vertical edges 35 into a receptacle 38 for locking a spreader (3, for box installation , Fig. 1) is to be inserted.

In the exemplary embodiment according to FIG. 3, it is symbolically shown on the left how the receptacle 38 can lie in the area outside the spar 32 (between the cover plates 33) or alternatively in the area (inner area) enclosed by the spar 32 (right side of FIG. 3) , In the latter case, the bolt 37 is also inserted into the receptacle 38 from a vertical edge 35. However, since part of the spar 32 lies between the edge 35 and the receptacle 38, a corresponding bore 39 is provided in the spar 32. The corresponding section IV-IV of FIG. 3 is shown enlarged in FIG. 4. A bore 39 leads from the vertical edge 35 through the spar 32 in the horizontal direction to the receptacle 38. A bore for locking a strut (number 3, Fig. 1) required bolts are inserted into the receptacle 7 (or pulled out of the receptacle).

The coupling and pivoting means required for the operation of the spreader receptacle 38 in the box shoring for coupling and pivoting the struts are preferably left sunk in the space between cladding plates even when the building board is temporarily used, for example in the slide rail shoring.

LIST OF REFERENCE NUMBERS

1 __ trench

2 = building boards

3 = struts

4 = soil

5 = trench floor

6 = cutting edge

7 = clamping device (3)

8 = recording

9 = swivel axis

10 = cover plate

11 = bolt

21, 22 = building boards (Fig. 2)

23 = slide rails

24 = vertical edge (21, 22)

25 = T-rail

26 = C profile

27 = spacer

28 = edge (27)

29 = frame slide rail

31 = building board

32 = frame spar

33 = cover plate

34 = T-rail

35 = vertical plate edge

36 = assembly gap

37 = bolt

38 = recording

39 = bore (32)

Claims

claims:

1. Building board (31) for trench shoring to secure the walls of a cable trench (1) with a substantially rectangular frame spar (32) made of section steel and on both sides of the frame spar (32) spanned frame panels (33), characterized in that the building board (31) has both receptacles (38) with a detachable bolt coupling (37) for pivotably fastening spreaders (3) around approximately horizontal axes in the box shoring as well as on their vertical edges (35) coupling rails (34) for connecting neighboring plates to trench rail profiles ( 26) in the slide rail shoring that the spreading receptacles (38) - completely sunk between the cladding sheets (33) in the individual building board (31) - are each provided adjacent to an approximately vertical part of the frame spar (32) and that the coupling rails (34) in the area adjacent to the respective spreader seat (38) there is a mounting gap (36) with space for handling the bolt cup plung (37) from the vertical edge (35) has (Fig. 3).

2. Building board according to claim 1, characterized in that for connecting a building board (30) in the slide rail vertically between two adjacent plates, a slide rail (23) with each adjacent plate facing sliding profile (25), in particular C-profile, for vertical insertion of a Has plate in a slide rail (23).

3. Building board according to claim 1 or 2, characterized in that the respective spreader receptacle (38) in the frame spar (32) framed and closed by the cladding sheets (33) interior of the base plate (31) directly adjoins the spar (32).

4. Building board according to claim 1 or 2, characterized in that the respective spreader receptacle (38) on a vertical outer edge of the frame spar (32) - between two over the outer edge parallel to Edge areas of the cladding plates (33) projecting beyond the frame surface - directly adjoining.

5. Building board according to claim 1 to 4, characterized in that the spreader receptacle (38) contains all the pivoting and coupling parts required for their operation with coupled spreader (3) in box shoring, even in the case of temporary atypical use, sunk in the space between the cladding sheets (33) ,