EP1606460A1 - Dispositif de couverture de puits et son procede de pose - Google Patents

Dispositif de couverture de puits et son procede de pose

Info

Publication number
EP1606460A1
EP1606460A1 EP04722279A EP04722279A EP1606460A1 EP 1606460 A1 EP1606460 A1 EP 1606460A1 EP 04722279 A EP04722279 A EP 04722279A EP 04722279 A EP04722279 A EP 04722279A EP 1606460 A1 EP1606460 A1 EP 1606460A1
Authority
EP
European Patent Office
Prior art keywords
guide ring
frame
traffic area
manhole cover
manhole
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Withdrawn
Application number
EP04722279A
Other languages
German (de)
English (en)
Inventor
Alfred Fuchs
Harald Gilbert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ACO Ahlmann SE and Co KG
Original Assignee
ACO Severin Ahlmann GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE10330055A external-priority patent/DE10330055B4/de
Application filed by ACO Severin Ahlmann GmbH and Co KG filed Critical ACO Severin Ahlmann GmbH and Co KG
Publication of EP1606460A1 publication Critical patent/EP1606460A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories

Definitions

  • the invention relates to a manhole cover for placing on an upper edge of a manhole structure and for flush-mounting installation in a ceiling of a traffic area comprising a frame with a supporting edge for inserting and holding a cover.
  • manhole covers serve for surface drainage and access to the sewage system, pipe systems, heating ducts, etc. from above. They usually consist of several manhole rings, one on top of the other, grouted by mortar, on an opening in the manhole, and the top of which is often conical
  • Shaft neck which is also jointed with the shaft rings.
  • a manhole cover on the manhole neck which consists of support rings or leveling rings for leveling with the traffic area and a manhole cover that closes the manhole.
  • the compensation rings mentioned are also bricked on the shaft neck with a mortar joint. Forces brought in by traffic loads are directed through the manhole cover into the compensation and support rings and from there into the manhole structure. Since at least half the axle load (when a vehicle's wheel drives over the manhole cover) is transferred to the support ring, it is necessary to adjust the support rings precisely.
  • a crack first occurs between the frame and the underlying mortar joint and between the outer surface of the frame and the surrounding road surface.
  • the frame is no longer stuck and moves when it is run over.
  • the mortar joint between the underside of the frame and the shaft neck is destroyed. Water, de-icing salt and frost then penetrate, loosen up the area around the shaft neck and destroy it
  • Compensating rings are created by the aforementioned settlement at the transition area between the traffic area and the shaft cover, which leads to increased noise pollution from road traffic.
  • the point load on the protruding manhole cover is increased many times over.
  • horizontal loads due to impact loads are now also occurring. This additionally loosens the manhole cover in its structure and contributes to increased wear.
  • the installation accuracy is a further source of error. It requires extremely precise work to create a flat surface level between the manhole cover and the surrounding traffic area, since with the above-described method of producing a manhole cover, a subsequent adjustment of the
  • manhole covers consist of a cover and cover frame with an outer flange at the top and an adapter ring made of concrete.
  • the frames of this cover are made, for example, in bituminous
  • the invention is based on the object of further developing a manhole cover for placement on an upper edge of a manhole structure in such a way that the durability of this manhole cover is permanently ensured even with increasing traffic loads.
  • This object is achieved by a device according to claim 1 or by a method according to claim 10.
  • a manhole cover of the type mentioned above in that a lost formwork, which comprises a guide ring, is placed on an upper edge of a manhole structure in such a way that the frame of the manhole cover is held in the guide ring against displacement in the surface direction and essentially in the vertical direction on the upper edge of the shaft structure can be rolled into the ceiling of the traffic area in a freely displaceable manner, the guide ring being designed such that it absorbs and forwards almost no vertical loads.
  • manhole cover consisting of frame and cover, is statically decoupled from the manhole structure. No support or compensation rings are used to the
  • the traffic load which is introduced onto the manhole cover, is not diverted via the manhole cover into support or compensation rings and then into the manhole structure. Rather, the frame of the manhole cover is placed over the manhole structure within a guide ring and then rolled flush to the surface when the traffic area is compacted.
  • the frame is designed so that it has a radially outward-pointing support edge. The traffic loads introduced onto the manhole cover are diverted into the surrounding traffic area and from there into the surroundings of the manhole structure via this supporting edge.
  • the guide ring Since the guide ring is designed according to the invention in such a way that it can absorb almost no vertical loads, the traffic loads, starting from the supporting edge, are almost completely diverted into the environment, forming a 45 ° load transfer angle. For this purpose it is possible, for example, to make the guide ring as thin-walled as possible, since it absorbs almost no vertical loads. So that is with the present
  • Invention reduces the load entry in the shaft structure in comparison to known shaft covers. It should be noted that in addition to the design of the guide ring, other factors influence the load transfer into the shaft structure or in its surroundings. The distance between the lower flange edge of the frame and the upper edge of the shaft structure influences the force transmission into the shaft structure and its surroundings. The greater this distance, the less
  • a lost formwork comprising a guide ring, which is placed on the upper edge of the shaft structure, has the advantage that both the freshly introduced covering of the traffic area is in contact with this lost formwork and does not run into the shaft structure uncontrollably, as well as that the alignment of the Chimney frame is simplified before the final compression of the traffic area and the surface-flush rolling.
  • the adjustment of the height level of the manhole cover to the height level of the manhole structure and its upper edge is not achieved by using compensation or
  • Support rings are made.
  • the manhole cover is decoupled from the rest of the manhole structure, the power is transferred almost entirely via the traffic area, which due to its greater flexibility compared to the compensation and support rings normally used, for example made of concrete or resin-reinforced concrete, can discharge traffic loads without destroying them. Due to this more flexible storage, the noise level caused by traffic traveling over the manhole cover is also reduced. The noise level is also reduced by the flush design of the traffic area and manhole cover. Any edges or inaccuracies in the height of the manhole cover cannot occur, since the manhole cover is always rolled in flush with the surface.
  • Manhole cover and traffic area is guaranteed.
  • a static system is formed between the manhole cover and the traffic area, which is permanently stable and resistant with regard to overloading, settlement or other movements.
  • the durability is therefore increased, the noise pollution decreases and damage, for example due to insufficient drainage (caused by the level difference between the shaft cover and the traffic area) is avoided.
  • the guide ring and the frame have a play with respect to one another, so that an inclination of the frame, the lid and the ceiling of the traffic area with respect to a plane formed by the upper edge of the manhole structure can be adjusted.
  • this embodiment is also of particular importance in the case of previous inaccuracies in the design. It is therefore possible to position the manhole cover on a manhole that does not fully correspond to the planned inclination due to design errors or subsidence during the construction period. So the manhole cover system is too has been significantly improved in terms of its fault tolerance. This not only leads to a faster, but also to a more problem-free construction process.
  • the lost formwork comprising the guide ring, made of plastic or similar unbreakable and at the same time light material.
  • the plastic guide ring is particularly lightweight. That enables at the
  • the surface can also be flat.
  • the lost formwork is fixed either using adhesives, preferably resins, or mechanical fasteners such as bolts or weft screws.
  • adhesives preferably resins
  • mechanical fasteners such as bolts or weft screws.
  • the lost formwork is inserted into a groove provided in the upper edge of the shaft structure and is thus fixed quickly and safely without any additional aids.
  • the manhole cover according to the invention can of course also be used subsequently, for example in the course of renovation work.
  • the lost formwork should preferably be designed in such a way that it can be applied to the shaft structure without major adjustment work after removing the old surface layer.
  • the previous ones are advantageous mentioned elevations or knobs on the underside of the lost formwork, that is, on the side facing the upper edge of the shaft structure, through which a placement on the upper edge of the shaft structure is possible even with unevenness on the upper edge.
  • the lost formwork is preferably fixed here by the newly introduced traffic area, but can also be carried out additionally by means of synthetic resins or mechanical connections such as shot bolts. There is usually no need to make any changes to the height of the old shaft structure.
  • Lengthy repair work on the surfaces of the shaft structure to ensure a non-positive connection between the shaft cover and the shaft structure or compensating rings is eliminated. Any unevenness that may be present is eliminated by the newly introduced traffic area. It should be noted that the lost formwork can of course also be smooth on its underside.
  • a further development of the invention is the execution of the lost formwork, which contains the guide ring, as a height-adjustable formwork or a height-adjustable guide ring.
  • This has the advantage that, for example, during renovation work on the construction site, regardless of the level of the new road and the old shaft structures, a single height-adjustable formwork ring that naturally fits within the radius can be used. A height adjustment of the shaft structure is therefore no longer necessary for most renovation work. This is particularly advantageous for renovation work in which the mentioned compensation and spacer rings are removed. But this height-adjustable guide ring is also used to advantage in new buildings, since it enables construction to be carried out without lengthy height adjustment of the shaft structures.
  • a ring protruding vertically from its support surface is preferably formed on the lost formwork, onto which a second ring is slid in a height-adjustable manner from above.
  • This second ring then serves as the actual guide or formwork ring.
  • the height fixing of both rings to each other can be done for example by screws or bolts that are inserted into the first ring and serve as a support for the second ring, or by both rings and that by prefabricated, on the rings in one Coresonding grid arranged holes are pushed and connect these two rings together.
  • the invention relates to a method for installing a manhole cover that extends over the upper edge of a manhole structure
  • the manhole cover is held against shifting in the surface direction by a lost formwork, which contains a guide ring and which is placed on the upper edge of the manhole structure, whereby it is rolled into the ceiling of the traffic area so as to be freely movable in the vertical direction on the upper edge of the manhole structure and wherein the guide ring is designed such that it receives and transmits almost no vertical loads.
  • This manhole cover is installed in the following steps:
  • the lost formwork including the guide ring is applied so that it cannot move on the upper edge of the shaft structure.
  • the formwork can be held securely in place by grooves, degrees or with the help of adhesives such as synthetic resins or the like. Since in the later course the lost formwork due to the material of the
  • the traffic area is fixed, it is usually not necessary to secure it in advance before introducing it onto the traffic surface.
  • the frame of the manhole cover is placed over the guide ring of the lost formwork on the surrounding ceiling of the traffic area. Positioning is made easier by the guide ring, the diameter of which is adapted to the diameter of the frame. Lengthy measuring and leveling work is not necessary.
  • the traffic area is compacted or rolled flush with the frame. This leads to a flush alignment of the frame with respect to the traffic area and to a plan
  • the inventive design of the guide ring leads to the fact that starting from the supporting edge of the frame, all traffic loads under Formation of a load propagation angle of essentially 45 ° can be derived in the vicinity of the shaft structure.
  • the method thus provides a better quality of execution and is also less expensive than conventional known methods.
  • Manhole covers can be installed in the construction process without major measuring and leveling work. In addition, the susceptibility to errors when installing manhole covers is naturally reduced.
  • a special form is a method for retrofitting a shaft cover mentioned at the beginning, for example in the course of a refurbishment.
  • the lost formwork is secured against displacement on the exposed one
  • a special method for installing a manhole cover is to insert a manhole cover into a sloping ceiling of the traffic area with respect to the upper edge of the manhole structure
  • FIG. 1 shows a section through a sewerage shaft with manhole and manhole cover according to a first embodiment of the invention
  • FIG. 2 shows a section through a sewerage shaft with access opening and shaft cover according to a second embodiment of the invention
  • FIG. 3 shows a detailed view of area III in FIG. 1,
  • Fig. 4 is a representation corresponding to that of FIG. 3 with the load distribution and
  • FIG. 5 shows a detailed view of area V in FIG. 2.
  • FIG. 1 shows a section through an embodiment of a complete, accessible sewerage shaft.
  • a shaft structure 10 is constructed in the form of several prefabricated shaft rings 51.
  • a manhole cover 20 of the manhole structure 10 is designed according to a first embodiment.
  • a thin-walled guide ring 12 centers the manhole cover 20 during installation above the manhole structure 10.
  • this thin-walled guide ring 12 serves as lost formwork 13 (see FIG. 3) and prevents the excessively flowing liquid or viscous material of the traffic area 31 into the shaft structure 10.
  • FIG. 1 a state after rolling or compacting the traffic area 31 is shown schematically. Note the surface-flush transition between a surface 33 of the traffic area 31 of the manhole cover 20. It is clear that the play between the manhole cover 20 and the guide ring 12 enables the traffic area 31 to be set together with the manhole cover 20.
  • FIG. 2 shows a section through a second embodiment.
  • a manhole cover 20 of the invention is designed such that it can be installed in a traffic area 31 which is inclined with respect to an upper edge 11 of a manhole structure 10.
  • a walkable sewer shaft 50 is shown here again for clarification. Of course, other shaft shapes can also be used.
  • the shaft structure 10 is formed from precast concrete rings 51, which are mounted one above the other.
  • a thin-walled guide ring 12 of a lost formwork 13 is arranged on the upper edge 11 of a last manhole ring 52, the so-called manhole neck 52.
  • the shaft neck 52, the prefabricated shaft rings 51 and the accessible sewer shaft 50 are referred to below as the shaft structure 10.
  • the upper edge 11 of the shaft structure 10 or the guide ring 12 forms a plane ii, with respect to which the traffic area 31 and the shaft cover 20 are inclined. Due to the static decoupling of the shaft cover 20 and the chess structure 10, it is possible to reduce the inclinations or height differences of the traffic area 31 with respect to the shaft structure 10 to be tolerated and to continue with the construction process without major measurement and compensation work. Because the guide ring 12 and a frame 21 of the manhole cover 20 have play, the manhole cover 20 can be positioned over the guide ring 12 even when the traffic surface 31 is inclined and then rolled into the inclined traffic surface 31. After rolling or compacting, a flush surface 33 is obtained between the manhole cover 20 and the traffic surface 31.
  • FIG. 3 shows an enlarged, detailed section of a first embodiment according to FIG. 1.
  • numeral 20 denotes the manhole cover, consisting of a frame 21 and a cover 22.
  • the frame 21 forms a support rim 23 projecting radially outwards.
  • the installation position is shown a manhole cover 20 after compaction or rolling of the traffic area 31. After the compaction, a surface-flush level results between the surface 33 of the traffic area 31 and the manhole cover 20.
  • the frame 21 of the manhole cover 20 is above the manhole structure 10 before being rolled into the traffic area 31 positioned. It is centered by a thin-walled guide ring 12 of a lost formwork 13, which is applied to the upper edge 11 of the shaft structure 10.
  • the special feature here is that the guide ring 12 of the lost formwork 13 is designed in such a way that it receives almost no vertical loads.
  • the guide ring consists for example of a thin-walled metal or plastic ring.
  • the lost formwork 13 with its thin-walled guide ring 12 also prevents that when the material is brought into the traffic area 31
  • the lost formwork 13 is applied to the upper edge 11 of the shaft structure 10, preferably before the material of the traffic area 31 is applied.
  • the upper edge 11 is formed so that the lost formwork 13 is held horizontally by a bead 14.
  • An independent fixation, for example by gluing with synthetic resin, is therefore not necessary in this embodiment.
  • Another task of the lost formwork 13 is to center the manhole cover 20 before it is rolled into the Traffic area 31. The construction worker simply has to position the manhole cover 20 within the guide ring 12 of the lost formwork 13. A lengthy and error-prone measurement is not necessary.
  • FIG. 4 shows the same section as FIG. 3, the load transfer of traffic loads F, applied to the manhole cover 20, now being shown via a support ring 23 of the frame 21 in the surrounding traffic area 31. 4 shows the static decoupling of manhole cover 20 and manhole structure 10.
  • the thin-walled guide ring 12 allows the traffic load F to be largely carried away into the vicinity of the shaft structure by forming a load transfer angle ⁇ of approximately 45 °. Only at the level of the upper edge 11 of the shaft structure 10 does a partial introduction into the shaft structure take place, the load introduced, as sketched here, turning out to be significantly lower than can be observed in conventional systems from the prior art.
  • the support rim 23 is selected such that approximately half of the traffic loads are diverted via the support rim 23 of the frame 21 into the traffic area 31 and from there into the vicinity of the shaft 30 and the other half into the shaft structure 10.
  • this supporting rim 23 can of course also be made wider, as a result of which more forces are introduced into the vicinity of the shaft 30 and less forces into the shaft structure 10. This choice can be made depending on the expected traffic loads F, the tolerable noise pollution, etc.
  • FIG. 5 shows a detailed enlarged section of a second embodiment according to FIG. 2.
  • the manhole cover 20 is designed in such a way that it can be installed at an inclination ⁇ with respect to a plane ii formed by the upper edge 11.
  • the manhole cover 20 consisting of a frame 21, which forms a supporting edge 23, and a cover 22. It can be seen that, due to play between the thin-walled guide ring 12 according to the invention and the frame 21, the manhole cover 20 with an inclination ⁇ of the ceiling 32 with respect to a plane ii formed by the upper edge 11. 5 shows the state after the shaft cover 20 has been compacted or rolled into the ceiling 32 of the traffic area 31.
  • the lost formwork 13 is fixed with its guide ring 12 by one formed on the upper edge 11 of the shaft structure 10 Bead 14. It should be noted that the term inclination ⁇ is to be understood relatively here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

L'invention concerne un dispositif de couverture de puits (20) à poser sur un bord supérieur (11) d'une structure de puits (10) et à insérer en affleurant à la surface dans un revêtement (32) d'une surface de circulation (31). Ce dispositif de couverture de puits comprend un cadre (21) pourvu d'un bord porteur (23) pour l'insertion et le maintien d'un couvercle (22). Un coffrage perdu (13) pouvant être posé sur le bord supérieur (11) de la structure de puits (10) comprend un anneau de guidage (12) dimensionné de sorte que le cadre (21) du dispositif de couverture de puits (20) est maintenu dans l'anneau de guidage (12), un déplacement en direction de la surface étant empêché, et qu'il peut être serti dans le revêtement (32) de la surface de circulation (31) avec déplacement libre en sens pratiquement vertical sur le bord supérieur (11) du dispositif de couverture de puits (10). En outre, l'anneau de guidage (12) est conçu de façon à n'absorber et à ne transmettre pratiquement aucune charge verticale.
EP04722279A 2003-03-25 2004-03-22 Dispositif de couverture de puits et son procede de pose Withdrawn EP1606460A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10313362 2003-03-25
DE10313362 2003-03-25
DE10330055A DE10330055B4 (de) 2003-03-25 2003-07-03 Schachtabdeckung und Verfahren zu ihrem Einbau
DE10330055 2003-07-03
PCT/EP2004/003028 WO2004085750A1 (fr) 2003-03-25 2004-03-22 Dispositif de couverture de puits et son procede de pose

Publications (1)

Publication Number Publication Date
EP1606460A1 true EP1606460A1 (fr) 2005-12-21

Family

ID=33099286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04722279A Withdrawn EP1606460A1 (fr) 2003-03-25 2004-03-22 Dispositif de couverture de puits et son procede de pose

Country Status (3)

Country Link
EP (1) EP1606460A1 (fr)
RU (1) RU2005132626A (fr)
WO (1) WO2004085750A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008007917U1 (de) 2008-06-16 2008-10-09 Trauthwein Entwässerungs- und Abscheidetechnik Industrievertretungen GmbH Schachtabdeckung aus Gußeisen
DE202011003655U1 (de) 2011-03-08 2011-11-02 Trauthwein Entwässerungs- und Abscheidetechnik Industrievertretungen GmbH Schachtabdeckung aus Gußeisen
CN104196057A (zh) * 2014-08-25 2014-12-10 凌乐旭 一种安全无渗漏聚丙烯窨井
NO339801B1 (no) * 2014-10-20 2017-01-30 Eirik Strand Fremgangsmåte for installasjon av en kum, samt forskalingsring for dette formål

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6502680A (fr) * 1965-03-03 1966-09-05
DE8604492U1 (de) * 1986-02-20 1986-06-19 Schemel, Ekkehard, 4300 Essen Kanalschachtauflagerring
JP2002511539A (ja) * 1998-04-09 2002-04-16 ハーゲン，ペーター マンホールカバー支持装置
AU2001268979A1 (en) * 2000-04-25 2001-11-12 Karl Kortmann Manhole cover for a canalization

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004085750A1 *

Also Published As

Publication number Publication date
WO2004085750B1 (fr) 2004-11-25
WO2004085750A1 (fr) 2004-10-07
RU2005132626A (ru) 2007-04-27

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