EP1293606A1 - Daywork shuttering device - Google Patents

Abstract

Device comprises a rear edge limiter (3) and a front edge limiter (4) supported on two height-adjustable supports (5). Preferred Features: A horizontal supporting carrier (6) is arranged between the front and rear limiters and held by a base support. An angled profile (7) is arranged below the horizontal supporting carrier below the front limiter or rear limiter.

Description

The invention relates to a day field shutdown for the deckle and connection from partial surfaces of one during processing at least partially produced flowable or creepable and later solidifying soil material Flooring, in particular for the boundary of concrete floors, with a applied soil jamming rear deckle, one of the rear Edge boundary opposite the front edge boundary for demarcation the front edge of the adjacent part surface and a vertical anchorage, the rear deck boundary with the front deckle in vertical Direction fixed and slidably connects in the horizontal direction, with the rear Deckle and the front deckle one vertical to the ground have arranged jammed edge.

Such day field shutdowns are used for the production of concrete floors, which can not be applied in one operation. Such soles harden by evaporation of the water needed to mix the soil material out, in which case a shrinkage occurs, the bottom plate so during the Drying and curing in all directions contracts. While this in the Vertical alignment is of insignificant importance occurs in large plates in a non-negligible volume shrinkage in the horizontal direction. This would cause cracks to occur in the ground unless special precautions are taken be taken to record the shrinkage controlled. For this purpose, joints are created in the soles, which absorb both the shrinkage compensate for later heat-induced expansion of the concrete soles again can.

It can either additional, mechanically cut break or Dummy joints are made, which are produced approximately by mechanical cutting operations become. The size of the applied in one operation concrete soles is However, either by the maximum daily work or by a maximum available amount of soil material limited, so that the limits of this with daily performance or day field designated maximum manufacturable Sole size anyway Abstellungen, so boundary restrictions required are. At these edges then also arise joints that the disappearance of the Pick up material.

The floor panels produced in this way can be made of concrete or another, initially be made of flowable or creep material and with steel or plastic reinforcements, For example, the known structural steel mats or synthetic fiber fabric be strengthened. In such floor panels is on the edge of the day field placed a formwork, which removed after solidification of the concrete again becomes. Then another field, ie another concrete sole against this vertical edge of the predecessor field are applied. After solidification the material and the associated shrinkage occurs the length contraction the sole, resulting in cracking along the daily field edge.

Currently, this crack is then mechanically re-cut with a joint cutting machine and expanded and then filled with an elastic material. In this method, the two day fields are not connected. Often, however, the so produced floors are loaded dynamically. Examples for this is the motorway construction or also the soil in industrial halls, which by Heavy duty vehicles are exposed to dynamic loads. Here comes one Redensification of the subsurface and the day fields can be relative to each other move in point movements. Consequences of these point movements are often Edge breaks that can only be eliminated consuming.

To prevent the dot movements are in a well-known Method the plates usually connected to each other with so-called sliding dowels, the one horizontal mobility and thus the disappearance without unwanted Allow tension. In the vertical direction, the sliding dowels connect the stuck together. The arrangement and incorporation of the sliding dowels However, it is relatively expensive, so this much time is lost. additionally the break is likely to be relatively large in the area of sliding anchors. Especially with large day fields and thus increasing joint width increases the risk of damage from industrial trucks or forklifts then to.

To remedy this problem are from the international patent application WO 99/55968 day field stops known that have a support beam, the extends with one side into one of the faces and thus prevents the pumping movements. This support beam is embedded in an erectable framework and has the Disadvantage that either the framework must be designed height-specific or the day field shutdown on the construction site by shims to the height the concrete sole needs to be adjusted.

Conventional methods also provide well-known steel angles, delimiting the daily fields as lost formwork and after spreading of the flooring can not be removed. With these lost forms These are usually standard steel angles that are also here to prevent pegged by point movements together. However, these angles indicate the disadvantage that, due to their production, they have high tolerances, that is, they can deviate considerably in height from each other, as they are be produced as rolled profiles. The use of blank-related steel profiles Although in principle to eliminate this disadvantage is possible, separates in practice for the construction sector, however, for cost reasons.

Another major disadvantage of steel angles is that for every floor thickness a certain nominal thickness of the steel angle must be used. It missing a possibility for height adjustment, which would make it possible, the Adjust steel angle to a specific floor thickness. It is also with these Steel angles difficult to compensate for bumps, as this substructures would have to be provided that the steel angles with a plane Set up the surface on the uneven surface and sufficiently secure against fix the pressing soil mass.

The object of the invention is, therefore, a largely ready-made day field stop To sharpen, taking into account unevenness of the subfloor a cost-effective and easy placement of a partial surface of an applied Flooring allows and despite the shrinkage, a flawless design of the Edges of the faces allows.

This object is achieved according to the invention in that the rear edge boundary, the front deckle or the front and back deckle supported on at least two height-adjustable floor supports.

Due to the inventive design of the day field shutdown with at least two height-adjustable floor supports can now independently of the day field shutdown be used universally from the thickness of the flooring. Also height differences and unevenness of the subsoil can be easily compensated. The day field shutdown according to the invention is a lost one Formwork, which remains after application of the flooring in this. Special Advantages developed by the day field shutdown in conjunction with the two horizontal edge boundaries, which are arranged parallel to each other on the floor supports rest. The rear boundary delimits the currently edited one Day field and forms with its upper edge at the same time a protective edge for the Edge of the surface.

The front edge boundary in turn represents the beginning of the next partial area group; So it is with further application of the soil material to this front Concrete edge concreted. In case of shrinkage of the material, the front remove and rear boundary of each other. The resulting gap can through flexible filling material can be filled if necessary. The filling material can be rubber, Plastic or another common material.

Preferably, the rear edge boundary and the front edge boundary are on arranged a horizontal support beam, wherein the floor supports with this Support beams are connected directly or indirectly. In this embodiment Both the front and the front edge boundary can be worked off together by milling The upper edge can be machined, and it can be easily made from simple rolled profiles a flat surface can be made. This flat surface is special important, if in industrial floors a high quality of the surface texture such as flexible transport systems with low ground clearance to drive over the ground.

The rear deckle and the front deckle must be relative to each other remain mobile to reduce the shrinkage of the material during drying and curing. Are the two boundary boundaries on arranged the horizontal support beam, it is preferred only one of the two Edge boundaries associated with this support beam, so that the support beam relative remains movable to the other edge boundary. The other edge boundary can slidably rest on the support beam without being attached separately. So that the edge boundary does not fall down before using the daytime field shutdown, This can be done via transport locks either with the opposite Edge boundary or be connected to the support beam, before using the Then the day off is removed. This transport lock can be to act conventional safety screws, such as wing screws, the be arranged in the upper area of the edge boundaries.

A further preferred embodiment of the invention uses a displaceable Attachment of the deckle to the support beam. The rear one is preferred Edge boundary kept movable while the front edge boundary fixed is connected to the support bracket. Alternatively, both margins can be limited be movably arranged on the support beam, which here is an attachment About oblong holes whose longitudinal axis perpendicular to the longitudinal axis of the day field stop is arranged offers. The longitudinal extent of the slots is so held that the maximum shrinkage, preferably plus a security area, is possible. This embodiment offers the advantage that even the new Part surface at the front edge can dwindle, without the day field off as Whole would have to be moved. In the corner, a separate component can be used be that three or four, at an angle to each other edge boundaries connects with each other.

The horizontal support beam is preferably formed by a thin sheet metal strip, which may have a thickness of about 5mm. Between the floor supports and The horizontal support beam may be arranged an angle profile, which is the support beam holds. In this embodiment, for example, the angle profile is fixed to the Floor supports connected, such as by a welded joint, and the horizontal Support beam is slidably on the angle profile.

As the essential function of the day field adjustment in addition to the height adjustment through the ground support is the compensation of shrinkage stresses, can the angle profile also be firmly connected to the horizontal support bracket. decisive for the invention is merely that resting on the support beam front and rear edge boundaries the lateral movement due to the Shrinkage allows. In a preferred embodiment of the invention is beside the first angle profile between the support beam and the floor supports arranged second support profile, for example, the shape of an angle can have.

Both profiles, so the angle profile and the support profile are arranged so that they have two mutually parallel vertical surfaces, between which a gap remains. The support profile can be firmly connected to the horizontal support beam. The floor supports can be used both on the angle profile and, alternatively, either or additionally, act on the support profile. On the gap between the angle profile and the support profile may have a flow barrier in the form of a narrow sheet metal strip be inserted. This flow barrier lies with its lower edge on one Subsoil, on which the soil material is applied, on and sticks out with her upper edge into the gap. The gap should be sufficiently deep so that the Flow barrier does not hinder the height adjustment, but sufficiently deep in The gap can protrude, so when raising the height adjustment, the flow barrier does not slip out of the gap.

The flow barrier is formed by a thin sheet metal strip, the small To absorb forces. As a result, a thin stainless steel strip can be used be, which has approximately a thickness of 1 to a few millimeters. The floor supports may have a footplate, with a thin footprint also below the flow barrier is arranged. In this case, the footprint can be a groove or have another horizontal retaining means, the lateral deflection of the lower edge of the flow barrier prevents and an additional transverse support guaranteed.

An alternative embodiment of the Tagesfeldabstellung used instead of Angle profile and the additional support profile a profile with T-shaped cross section, So a T-beam. Such carriers are offered as meter good value for money and can be easily and simply installed. To the gap for the insertion of the To realize flow barrier, a groove can be cut in the lower part of the T-profile become. Since this process will be relatively expensive, it is cheaper On the lower boom of the T-profile laterally a support for the flow barrier applied. This holder can be formed by simple insertion clips be that no force must absorb, if the flow barrier on the Side of the rear deckle is located.

Alternatively, the floor support can be connected to the T-profile that between the floor support and the lower, vertical boom of the T-profile a gap remains. In this case, the flow barrier between the floor support and the T-profile be plugged. When arranging the flow barrier on the side of the front Edge boundary should, however, a sufficiently fixed holding means be provided, for example, by a side to the lower part of the T-profile screwed holding plate can be formed.

In the upper area of the front deckle and the rear deckle can additional cross connectors, for example in the form of so-called Heavy-duty pins, which are arranged, which the two margins with each other connect. In order to produce the mobility, these cross connectors are only in vertical direction held firmly in the edge boundaries, allow in horizontal Direction, however, a displacement of the two edge boundaries relative to each other. This can for example by a arranged in a sliding pin connection be realized at their respective from the front or from the rear edge restraint excellent free ends a loss prevention in Form of collar or locking pins may have.

The hole for inserting the cross connector can during transport before Installation of the day field shutdown can be used as a transport lock by here a screw is used. Alternatively, the cross connector itself be used as a transport lock by using a threaded rod as a cross connector is used, the two-sided or one-sided with nuts on the front and rear deckle is attached. To be in front of shoring the day field stop The nuts in this embodiment then turned up so far that they at the end the cross connector are arranged. With appropriate excess of Bore is such a sliding of the threaded rod within the bore and thus a Slipping apart of the front and the rear edge boundary due to Shrinkage possible.

The floor supports preferably have the simplest possible and easy-to-use Height adjustment on. For this you can, for example, from a be formed variable-length spacer, which is supported on the base plate. In a preferred embodiment, this variable-length spacer formed by a sleeve fixed to the angle profile, the support profile or connected to the horizontal support bracket. For this purpose, a welded construction offers at. This sleeve can be provided with an internal thread, so that of below a threaded bolt can be screwed into the sleeve. This threaded bolt For example, fixed, here also via a welded joint, with the Be connected foot plate. Turning the footplate will then do the desired Height adjustment.

An even better construction of the floor support also has one with the foot plate firmly connected threaded bolt on, but here is not the sleeve with a Provided internal thread, but the threaded bolt is leaving a Game inserted without positive locking in the sleeve. On the threaded bolt below the lower edge of the sleeve is screwed onto a bearing element, on the upper Edge of the sleeve is supported. A rotation of the bearing element, approximately from a simple nut can be formed, thus causing a training or driving the Threaded bolt into the sleeve and thus a height adjustment of the floor support.

The day field shutdown is in a preferred embodiment on both sides provided with a plurality of juxtaposed brackets, which the front deckle and the back deckle fixed to the ground material connect. These brackets can for example be U-shaped and attached with an upper free end to the front and rear deckle be. The connection is a welded joint, but they are other common fixings possible.

In the lower area are the headband, for example, with its lower free end connected to the angle profile or the support profile. Of course Care must be taken here that the mobility of the front and the rear deckle relative to each other not through the headband restricted or canceled, such as a headband with a Component of the opposite side is connected directly or indirectly. The headband may have a thickness of a few millimeters and about be made the usual reinforcing materials. The headband is preferred at the same time used as a support for possible reinforcements of the soil and fulfilled such a double function. It can also be used with the soil during application of the soil Arming be intertwined, so that a secure connection is made.

At the front sides of the front and the rear edge boundaries can fittings be provided with a positive mating with allow several daily field shutdowns to a row or over an angle. In this way, a certain alignment is automatically effected, and a Slipping the day field shutdown relative to each other in the shrinkage direction is locked out. The fittings can also be used on any other Components of the day field shutdown are arranged, so it is for example possible that a footplate of the floor supports at the end of the day field shutdown is arranged. This foot plate can then form fit in a foot plate of a intervene adjacent day field stop.

Preferably, the floor supports are arranged alternately, so that they alternately once under the front edge boundary and once under the rear edge boundary are arranged. The arranged under the front edge boundary lower angle profile can with the profile forming the front edge boundary as well we firmly connect the support profile to the rear deckle. The only important thing is that a transverse force absorption with sufficient horizontal Displacement is available. This can be in addition to the heavy-duty pins be formed by the vertical support beam about that on the lower angle profile and the support beam rests and again the front and rear edge boundary wearing.

To effect the connection between the front and rear components, the support beam may be formed smaller than the angle profiles, so that to both Longitudinal sides first and second fasteners can be inserted about a connection of the components above the support bracket with the components is possible below the support bracket. These fasteners can be about be formed by simple round bars, over which the two component pairs under inclusion the support profile and the required clearance are welded together can.

In a further preferred embodiment, the flow barrier is fixed to the floor supports connected. It can lean against the vertical floor supports or be arranged free-standing. The upper part of the day field shutdown is then formed so that seen from the direction of flow during the entire Verstellbereiches a vertical surface, such as the surface of the support profile is arranged parallel to the flow barrier. The flow barrier can then be narrower Sheet metal strip be formed, due to the flow pressure against the vertical Surface of the support profile is pressed. In accordance with stable design The flow barrier can also be dispensed with the upper plant.

Further features and advantages of the invention will become apparent from the dependent claims and from the following description of preferred embodiments based on the drawings.

Fig. 1

eine perspektivische Ansicht auf eine erfindungsgemäße Tagesfeldabstellung,

Fig. 2

eine schematisierte Draufsicht auf einen Bodenbereich mit der in Figur 1 dargestellten erfindungsgemäßen Tagesfeldabstellung und

Fig. 3

die in Figur 1 dargestellte Tagesfeldabstellung in einer Seitenansicht.

In the drawings shows:

Fig. 1

a perspective view of an inventive Tagesfeldabstellung,

Fig. 2

a schematic plan view of a bottom portion with the invention shown in Figure 1 Tagesfeldabstellung and

Fig. 3

the day field shutdown shown in Figure 1 in a side view.

FIG. 1 shows a day field shutoff in a perspective view, which delimits a first area of a partial area 1 of a floor covering. in the right part is the rear edge limitation 3 to recognize, which the end edge of the limited applied soil material 2. To the left of this is the front edge boundary 4, which serves as a pressure edge for the next part of the surface 1 of the soil serves and anchoring bracket 12, on which the reinforcement can rest and effect a positive connection with the soil material 2.

FIG. 2 shows the diurnal shutdown of FIG. 1 in a schematic side view shown. The day field shutdown is from the front edge boundary. 4 and the rear deckle 3, which rest on the support beam 6. The support beam 6 in turn lies on an angle section arranged in the left part 7 and provided with the same cross section supporting profile 10. The transverse extent of the support beam 6 is slightly less than the common transverse extent of angle 7 and support profile 10 on the one hand and also with also with an angle profile designed front and rear edge boundaries 3, 4 on the other. In this way, an overhang of the results on both sides lower and upper leg of the rear edge boundary 3 and the front deckle 4 in the upper area or the upper Leg of the angle section 7 and the support profile 10th

In the gap next to the support beam 6, a round profile is inserted, which is an intrusion prevented by concrete mass in this gap and between the functional parts. in the Right area is this round profile via welded joints with the front Edge boundary 4 and the support profile 10 connected. That's the way it is Support profile 10 and the front edge boundary 4 firmly connected to each other while the support bracket 6 is movably arranged between these two components. The opposite round profile, however, is only plugged into the gap, so that the mobility of the rear edge boundary 3 is not limited by this is.

In the upper area, the rear edge boundary 3 and the front edge boundary 4 congruent bores, in which a cross connector 11 is inserted. This additionally connects the two boundary boundaries 3, 4, without obstructing their displaceability relative to each other in the horizontal direction.

The angle section 7 and here also the support section 10 is provided with floor supports 5 with a Setting device connected, which stand up on foot plates 14. The floor supports 5 are of a sleeve 5 ', a threaded bolt inserted into the sleeve 5 "and a screwed onto the threaded bolt bearing element 5" ', wherein the threaded bolt 5 "and the bearing element 5 '' 'here the adjustment form. The threaded bolt 5 'is rotatably connected to the base plate 14, so that a rotation of the bearing member 5 "', which is formed here as an ordinary mother is a displacement of the sleeve 5 'relative to the base plate 14 and the threaded bolt This causes a height adjustment depending on the direction of rotation of the bearing element 5 '' 'a. Due to the low pitch of the thread of the threaded bolt 5 ", a relatively fine adjustment of the height can be effected and the upper edge of the front deckle 4 and the rear deckle 3 are adjusted exactly.

Between the support section 10 and the angle section 7, a gap 8 is arranged, in a flow barrier 9 is inserted in the form of a narrow sheet metal strip. This flow barrier 9 does not cause soil material below the front deckle 4 and the rear deckle 3 can flow through. The depth of the Gap 8 ensures a large range of adjustability of the floor supports 5, without the one hand, the flow barrier 9 from the gap 8 by booting the Angle profile 7 and the support section 10 slips out or on the other hand to the upper Edge of the gap 8 abuts.

FIG. 3 shows the day field shutdown shown in FIG. 2 and described above shown in section in a side view. To recognize here is the connection of the front edge boundary 4 with the angle profile 7 arranged underneath the first connecting means 17. In the same way, the rear edge boundary 3 with the support profile 10 arranged under the support beam 6 via the second connection means 16 connected. The two edge boundaries 3, 4 are with side connectors 17 provided in combination with one on the opposite Side arranged, corresponding docking coupling a form-fitting nesting enable the daytime field shutdowns to a series.

LIST OF REFERENCE NUMBERS

1

Part surface of the soil

2

Flooring

3

Rear edge boundary

4

Front edge boundary

5

ground support

5 '

shell

5 '

threaded bolt

5 ''

bearing element

6

support beam

7

angle section

8th

gap

9

flow barrier

10

support profile

11

cross-connector

12

anchor bracket

13

underbody

14

footplate

15

First connection element

16

Second connecting element

17

side connector

Claims (16)

Day field shutdown for the edge limitation and connection of partial surfaces (1) of a at least partially flowable or creepable and later freezing soil material (2) produced during the processing flooring, in particular for the boundary of concrete floors, with a the soil material (2) accumulating rear Edge boundary (3), one of the rear edge boundary (3) opposite the front edge boundary (4) for delimiting the front edge of the adjacent part surface and a vertical anchorage, the rear edge boundary (3) with the front edge boundary (4) fixed in the vertical direction and in the rear edge boundary (3) and the front edge boundary (4) having a vertical edge arranged to the bottom surface, characterized in that the rear edge boundary (3) and / or the front edge boundary (4) on at least two height adjustable Bodenstüt zen (5) is supported. Tagesfeldabstellung according to claim 1, characterized in that below the rear edge boundary (3) and / or the front edge boundary (4) a horizontal support beam (6) is arranged, which is held by the floor supports (5) and on which the rear edge boundary ( 3) and the front edge boundary (4) rests. Tagesfeldabstellung according to claim 2, characterized in that below the horizontal support beam (6) an angle section (7) is arranged, wherein the horizontal support beam (6) on the angle profile (7) is slidably placed and the angle section (7) on the floor supports ( 5) rests. Day field shutdown according to one of the two preceding claims, characterized in that it comprises at least one downwardly open gap (8), in which a formed in the form of a thin profile flow barrier (9) is inserted. Day field shutdown according to the preceding claim, characterized in that it is the flow barrier (9) fixedly connected to the floor supports (5). Day field shutdown according to claim 4 or 5, characterized in that in addition to the angle profile (7), a support profile (10) is arranged, wherein the angle profile (7) and the support profile (10) have vertical edge surfaces, leaving the gap (8) to each other are arranged in parallel. Day field shutdown according to claim 6, characterized in that the front edge boundary (4) or the rear edge boundary (3) via a first connecting piece (15) fixedly connected to the angle section (7). Day field stop according to claim 6, characterized in that the rear edge boundary (3) via a second connecting piece (16) fixedly connected to the support profile (10), wherein the horizontal support bracket (6) displaceable between the first connecting piece (15) and the second Connector (16) is arranged. Day field stop according to claim 6, characterized in that the front edge boundary (4) via a second connecting piece (16) fixedly connected to the support profile (10), wherein the horizontal support bracket (6) displaceable between the first connector (15) and the second Connector (16) is arranged. Day field shutdown according to one of claims 2 to 9, characterized in that the front edge boundary (4) or the rear edge boundary (3) is fixedly connected to the horizontal support beam (6). Day field shutdown according to claim 6, characterized in that the support profile (10), the horizontal support beam (6) and the front edge boundary (4) are interconnected, in particular formed by a common component. Day field shutdown according to one of claims 1 to 11, characterized in that the vertical anchoring of a plurality of horizontally disposed cross connectors (11) is formed, which are arranged side by side in the upper region of the rear edge boundary (3) and the front edge boundary (4) the cross connector (11) the rear edge boundary (3) with the front edge boundary (4) displaceable in the vertical direction and firmly connect in the horizontal direction. Day field shutdown according to one of the two preceding claims, characterized in that the rear edge boundary (3) and the front edge boundary (4) have two or more side by side arranged anchoring brackets (12), which after installation in the applied soil material (2) protrude and each with a lower free end with the angle profile (7) or, on the opposite side, with the support profile (10) and with an upper free end with the rear edge boundary (3) or, on the opposite side, with the front edge boundary (4) are connected. Tagesfeldabstellung according to any one of the preceding claims, characterized in that the bottom supports (5) on the underbody (13) attachable base plate (14) and a variable length by a setting spacer, on each of which the rear edge boundary (3) or the front Edge boundary (4) directly or indirectly supported. Day field shutdown according to the preceding claim, characterized in that the spacer of a sleeve (5 ') and in the sleeve (5') from below threaded bolts (5 ") is formed, wherein the adjusting device (15) from one to the threaded bolt (5 ") screwed bearing element (5 '") is formed over which the length of the sleeve (5') protruding from the free end of the threaded bolt (5 ") is adjustable. Day field shutdown according to the preceding claim, characterized in that the bearing element (5 "') is formed by a screwed onto the threaded bolt (5") nut, which is supported with its upper end face on the lower end face of the sleeve (5'), wherein the threaded bolt (5 ") has an anti-twist device, in particular by a firm connection of the threaded bolt (5") with the foot plate (14), so that the position of the threaded bolt (5 ") relative to the sleeve (5 ') is variable by turning the nut is.

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