KR101295224B1 - infrastructure channel - Google Patents

Abstract

The invention concerns a method for producing an infrastructure channel (1) which consists of at least two sub-pieces (2) of predetermined length, each sub-piece (2) being cast on-site from cast-in-place concrete (9) or from ready-mixed concrete to form a single piece.

Description

Infrastructure channel

The present invention relates to an infrastructure channel consisting of at least two segments of predetermined length.

Infrastructure channels are used in particular in new building construction or in extensive redevelopment projects to integrate all water and sewage into one, preferably human-sized, closed channel. Thanks to its spatial design, the water supply and sewerage can be monitored directly and permanently. Cable emissions and pipe leaks in the infrastructure's multi-utility ducts can reach the bottom of the building in liquid or semi-solid form or leak into the gas in the air-filled space of the utility duct. Leaks in pipelines can be pointed out by installed leak warning systems without the need for excavation. In addition, replacement or installation of new water and sewage in the infrastructure channel can be made easily as it is accessible through construction openings without excavation. In addition, water and sewage, as well as the interior of the infrastructure channels, can also be inspected using commercially available channel inspection camera systems.

Separating the fixed parts of the infrastructure channel and the water and sewage within the multi-utility ducts provides a relatively high level of safety from leaks caused by the sinking of the infrastructure channel, which is a development solution using infrastructure channels. (development solution) outweighs the protection of double-walled pipes. In addition, tree roots will not penetrate into the water and sewerage through unsealed segment joints and cracked liver damage.

DE 20113897 U1 discloses an infrastructure channel consisting of separate, single-piece prefabricated segments that are combined to create a continuous channel. Each prefabricated segment has a bottom plate, and two side walls are joined thereon and joined to each other by a round ceiling on top. Prefabricated segments are manufactured on the production line and assembled at the construction site by means of sealing on the front. In order to be able to transport prefabricated segments without damage, it is necessary to provide expensive reinforcing protection at least during transportation. In addition, making a flat trench to accommodate the entire surface of the prefabricated segment baseplate requires considerable work. In addition, closing the ends facing adjacent prefabricated segments can only be accomplished with considerable effort. Moreover, factory-fabricated segments have the disadvantage that their length is very limited due to the limitations of production technology.

In addition, channel construction is known not only for prefabricated construction, but also for cast-in-situ concrete processes with steel reinforcement, which may be exposed and corroded in case of cracking or weathering. For example, it has the disadvantage of causing complete destruction of the channel as a result of collapse. In the event of fire, concrete pops and bursts steel reinforcements and channels are continuously destroyed.
In addition, DE 3524687 A1 discloses a method of making an in-situ concrete channel that avoids leaking points associated with joints.
Finally, GB 2360472 A discloses in-situ concrete with polypropylene reinforcement.

It is an object of the present invention to provide a method of the kind mentioned above which ensures fast and cheap fabrication of infrastructure channels.

According to the invention, the object is achieved by producing each segment one by one in situ using in-situ concrete or ready-mixed concrete, the inner shell being draped with drained geotextile and The beginning and end of the infrastructure channels are blocked by wood panels and / or strip sheet curtains while the situ concrete is cured.

Each individual segment of the infrastructure is produced one piece at a construction site continuously from in-situ concrete or ready-mixed concrete; The term 'in-situ concrete' in this description also includes ready-mixed concrete. The length of each segment produced is of a specific dimension in each case so that the segment can be produced as a day's work, with a length of between 4 m and 40 m, preferably between 10 m and 20 m, more preferably 15 m. Is made with. No steel reinforcement is needed. The lack of steel reinforcement, the relatively long length of each segment and the relatively minimal preparation ensure that the infrastructure channels are manufactured quickly and effectively and inexpensively. In order to absorb the water discharged during compacting of the in-situ concrete and to provide it back to the in-situ concrete during the subsequent curing, drainage geotextiles are prepared to hang the internal formwork. .
Steel inner formwork, hinged steel shutters that can be moved to concrete concrete and driving positions, are covered by plastic mesh that is firmly attached to the internal formwork by plastic rivets. Lose.
Reclaimed drained geotextile firmly spanning the interior formwork at the concrete hardening position is attached to the plastic mesh. In addition, there is a wood panel with a door to prevent any undesirable ventilation of the air in the infrastructure channel to prevent the beginning of the infrastructure channel and to terminate the strip sheet curtain around the ends of each shape of the manufactured segment. It is reasonable to stop it. The strip sheet curtain can be securely fastened on the inner formwork, for example at the end of the infrastructure channel. In addition, wood panels can be useful to secure handling devices, in particular cableway cranes, to transfer components, especially sheet insulation, to construction sites.

Preferably, expansion joint waterstops are injected between two adjacent segments. The expansion joint plate includes two sealing strips connected to each other by a central tube, and each sealing strip corresponds to one end of one segment.

For functional reasons, expansion joint plates with sealing portions are inserted in the distal surface of each segment. End shutters are used for this purpose, the end shutters provide a gap for the expansion joint plate, and the end shutters are securely coupled to the segment to block virtually any leakage after the in-situ concrete has settled. . In addition, elements are prepared which are foamed polymers, in particular polystyrene, which ensure the functionality of the expansion joint plate.

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Preferably, an atmospheric humidifier for curing in-situ concrete is erected in the segment after the formwork is removed from the segment. In order to ensure the efficacy of the atmospheric humidifier, the sheet wall is built in the infrastructure channel according to a function of the number of segments involved for functional reasons. The sheet wall can be developed (appear) in a portable form and can be moved sequentially by the construction process such that curing with an air humidifier is completed in approximately three sections for each segment.

In order to remove the formwork of the segment relatively early, despite the high specific gravity of the fugitive dust in the in-situ concrete, a thermally insulated outer formwork is further chosen.

According to another embodiment, the segments are covered by at least one air bubble film after removal of the formwork. The air bubble film prevents undesirable thermal stresses that can cause cracking in in-situ concrete and allows for relatively short formwork removal times. Air bubble films can be placed over the infrastructure channel, for example by cableway cranes, to cover up to three to six segments. The air bubble film also ensures that the cover is followed before the formwork is removed, for example a cableway crane with one end fixed to wooden panels blocking the inlet of the infrastructure channel and the other end fixed to the formwork. Pulled forward during removal of the formwork. If a cover is used, which is only commercially available at a relatively small dimension, known to be actually used for so-called winter construction protective matting, between the inner core of the in-situ concrete and the ambient temperature There is a risk of too much temperature difference. In addition, winter construction protective matting does not provide immediate and continuous insulation.

Preferably, the temperature of the in-situ concrete is measured to ascertain the curing of the concrete which is correlated with temperature and time. Firstly, the temperature is spaced along the segment at predetermined spatial intervals, preferably outside and inside, to determine the optimal point for removing formwork from the segment in time and to help specify the curing period for in-situ concrete hardening. At the diameter and at the midpoint to the cross section can be measured. Temperature measurement data is fed to a concrete maturity computer used to calculate formwork removal time.

In order to prepare the required amount of water available for in-situ concrete curing, it is appropriate to install a sprinkler hose, in particular a micro sprinkler hose, under an air bubble film for watering the in-situ concrete. In-situ concrete, in which the sprinkler hose is developed and solidified, is protected from eroding and that is why it is provided with micro-gaps.

In yet another embodiment, the adjustable heating system is operated in an internal formwork. Heating comprising one or a plurality of gas burners is particularly required when the ambient temperature is low and can be controlled by the concrete curing computer by temperature measurement data.

As man-made fibers are blended into in-situ concrete, the reinforcement of in-situ concrete for producing the infrastructure channels is formed by man-made fibers, in particular polypropylene fibers, and in-situ concrete has a short curing time and in particular 6 N / mm 2 It has a green strength of (fresh strength, wet strength). This allows the die to be removed quickly.
Moreover, in-situ concrete disproportionately contains many scattering dust. Depending on the outside temperature, the proportion of fugitive dust may be higher than that of cement. Such a method is not allowed under the German standard for reinforced concrete. However, since the individual segments of the infrastructure channel do not have steel, this standard is meaningless in the present invention. High rates of scattering dust are not only economical, but also provide ecological benefits. In particular, however, heat generation is less than in the standard manner, with the risk of shrinkage cracking.

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In the case of one infrastructure channel, the upper ceiling of the segment has a cover dimensioned in such a way that the piping, in particular the high pressure pipe, is introduced into it. In general, the cover should have relatively large dimensions so that rigid piping can be introduced into the center of the infrastructure channel. The opening for receiving the cover, which can be opened for the next activity in particular, is created by means of a cone (conical) cut from the inner formwork and the cover with an outer periphery corresponding to the opening Properly formulated in prefabricated molds for exact fit.

Preferably, at least one of the side walls has at least one pedestal for supporting the conduit. The pedestal can be fixed by, for example, a tie rod. Pedestals with, for example, L- or Z-shaped cross sections ensure reliable support for the conduits and allow the ends of the two connected pipes to be welded together. In addition, the pedestal is made to a specific dimension to support the roller for replacing the conduit. For reasons of functionality, the pedestal consists of fiber cement.

It goes without saying that the above mentioned features and those disclosed below can be used in different combinations than those indicated in each particular case. It is intended that the scope of the invention only be limited by the claims.

The invention is described in more detail below on the basis of one embodiment with reference to the corresponding figures.

1 is a longitudinal sectional view through an infrastructure channel having one complete segment and two coarse segments, prepared using the method according to the invention;

FIG. 2 is a transverse cross section through one segment of the infrastructure channel according to FIG. 1; FIG.

3 is a representation of the infrastructure channel in perspective according to FIG. 1;

4 is a front view of the infrastructure channel according to FIG. 3;

5 is an enlarged view of the pedestal for the infrastructure channel.

The infrastructure channel 1 consists of a number of segments 2 having facing ends 3 of each segment abutting facing facing ends of adjacent segments by means of closure. The expansion joint plate 5 is prepared to close the gap 4 existing between two facing ends 3 and has a expansion joint plate comprising a central hose 6, in each case a segment. It has sealing elements (7, 8) coupled to both sides of the expansion joint index plate against (2).

Each segment 2 of the infrastructure channel 1 is continuously produced in situ from the in-situ concrete 9 by a one-piece (one-piece) construction method 9. To accomplish this, a remarkably flat and compacted ground is created in the excavation gang. The length of each segment 2 to be produced is made to a particular dimension such that it can be completed in a day's work load.

In order to manufacture the segment 2, the bottomless inner formwork 11, consisting of a sheet of metal and provided with hinges 12, is brought into the interior rejection 11 after the in-situ concrete 9 has been cured. It is first installed with hinges 12 which serve to move the section. The process of making concrete is carried out step by step, with the bottom 10 having a wall projection which is first poured into a flat ground. There is a short waiting time before the side walls 16 and the ceiling 17 are cast concrete in order for the in-situ concrete 9 of the bottom 10 to harden.

Drained geotextiles 15, which absorb the water exiting from in-situ concrete solidification (settlement), are routed over the inner formwork 11 and then used again during the next curing period of the in-situ concrete 9 To be able. After the drained geotextile 15 is installed, a thermally insulated outer shell 19 is installed for the walls 16 and the ceiling 17. And an end shutter having a gap for the expansion joint plate 5 is used for each facing end. After the segment 2 is completed and the in-situ concrete 9 is cured, the inner formwork 11 is folded together and then pulled out of the finished segment 2 in the direction of the arrow 18. Segment 2 is now closed towards the entrance by a wood panel 20 with a door.

While disassembling the outer shell 19, the sheet of air bubble film is attached to the beginning of the instruction channel 1 and its end, on top of the segment 2 instead depending on the construction process. It is continuously drawn upon disassembly by the cableware crane 21, which has another frame 23 attached thereto.

The next segment 2 of the infrastructure channel 1 is then manufactured in the same way until the entire length of the infrastructure channel 1 is completed. Infrastructure channel 1 forms an accessible shell to which water and sewage lines of all required diameters can be placed. Since the manholes are at least spaced along the infrastructure channel 1, the destruction or repair of water and sewer lines may be possible at any time without excavation.

On the one hand, to produce segments 2 of the infrastructure channel 1 piece by piece, and on the other hand to do so without loss of quality, especially with respect to the formation of cracks, fast solidification, high green strength around 6N / mm2 There is a need for an in-situ concrete 9 that guarantees (green strength) (green strength) and allows slow continuous curing with low heat of hydration. The reinforcement 13 in the form of man-made fibers 14 has the special resilience of the in-situ concrete 9, especially with tension and stress, preventing cracks and increasing initial impact, shock and wear strength. It is added to the in-situ concrete 9 to ensure that.

The pedestals on the one hand securely receive the conduit 24 and on the other hand allow the conduit 24 to be welded to the other conduit 24 at their facing ends, as well as for the rollers for replacing the conduit 24. The pedestals 25 are mounted on one side of the infrastructure channel 1 on one side of the infrastructure channel 1 to support the conduit 24 so that the pedestals 25 are deployed in such a way as to provide support. Ready to align one.

The present invention provides a method of manufacturing an infrastructure channel consisting of at least two segments of a predetermined length, which ensures rapid and inexpensive production of an infrastructure channel.

According to the invention, the object is achieved by producing each segment one by one in situ using in-situ concrete or ready-mixed concrete.

Claims (19)

Consisting of at least two segments 2 of a predetermined length, Here each segment (2) is produced one piece on-site using in-situ concrete (9) or ready-mixed concrete, and the inner shell (11) is drainage geotextile (15). ) And the beginning and the end of the infrastructure channel 1 are blocked by wood panel or strip sheet curtain while the in-situ concrete 9 is curing, Expansion joint waterstop (5) is injected between two adjacent segments (2), The expansion joint plate 5 with sealing elements 7, 8 is installed at each facing end 3 of the segments 2, The in-situ concrete is an infrastructure channel, characterized in that it comprises a proportion of dust scattered higher than the proportion of cement. Consisting of at least two segments 2 of a predetermined length, Here each segment (2) is produced one piece on-site using in-situ concrete (9) or ready-mixed concrete, and the inner shell (11) is drainage geotextile (15). ) And the beginning and the end of the infrastructure channel 1 are blocked by wood panel or strip sheet curtain while the in-situ concrete 9 is curing, The upper ceiling of the segment 2 has a cover, The cover is made to specific dimensions in such a way that the conduit can be introduced into the center, At least one of the side walls 26 has at least one pedestal 25 for supporting the conduit 24, The pedestal 25 is an infrastructure channel, characterized in that made of fiber cement. delete delete delete The method according to claim 1 or 2, Infrastructure channel, characterized in that the air humidifier is installed in the center of the segment (2) after the formwork is removed from the segment. The method according to claim 1 or 2, An infrastructure channel, characterized in that a sheet wall is placed in the infrastructure channel (1) depending on the number of segments present (2). The method according to claim 1 or 2, Infrastructure channel, characterized in that a thermally insulated outer shell (19) is used. The method according to claim 1 or 2, The segments (2) are characterized in that the infrastructure channel is covered by at least one air bubble film during the form removal period. The method of claim 9, Infrastructure channel, characterized in that the sprinkler hose is installed under the air bubble film to water the in-situ concrete (9). The method according to claim 1 or 2, Infrastructure channel, characterized in that the temperature of the in-situ concrete (9) is measured. The method according to claim 1 or 2, Infrastructure channel, characterized in that the adjustable heating system is operated in the inner shell (11). In-situ concrete used in claim 1 or 2, The reinforcement 13 is constituted by artificial fibers 14, and the in-situ concrete is hardened rapidly and has an in-situ characterized in that it has a green strength (fresh strength, wet strength) of 6 N / mm 2. concrete. delete delete The method of claim 1, The upper ceiling of the segment 2 has a cover, An infrastructure channel, characterized in that the cover is made to specific dimensions in such a way that the conduit can be introduced centrally. 17. The method of claim 16, Infrastructure channel, characterized in that at least one of the side walls (26) has at least one pedestal (25) for supporting the conduit (24). 18. The method of claim 17, The pedestal (25) is fixed to the side wall (26) in a pre-stressing state. 18. The method of claim 17, The pedestal 25 is an infrastructure channel, characterized in that made of fiber cement.

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