EP0644980A1 - Eckbereich eines dichtungsrahmens für einen tunneltübbing. - Google Patents
Eckbereich eines dichtungsrahmens für einen tunneltübbing.Info
- Publication number
- EP0644980A1 EP0644980A1 EP94911044A EP94911044A EP0644980A1 EP 0644980 A1 EP0644980 A1 EP 0644980A1 EP 94911044 A EP94911044 A EP 94911044A EP 94911044 A EP94911044 A EP 94911044A EP 0644980 A1 EP0644980 A1 EP 0644980A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- corner
- recesses
- area according
- corner area
- cavities
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
Definitions
- the invention relates to a corner region of a sealing frame for a tunnel tubbing, which consists of the ends of two sides of the sealing frame which run at an angle to one another and consist of sealing profile strips and a corner piece connecting these ends, the sealing profile strips in their cross section with in their longitudinal direction up to grooves and cavities running continuously into the ends are provided.
- Tunnel tubbings are rectangular, often slightly curved, concrete slabs that are used to cover a tunnel that has just broken out.
- each tubbing has a circumferential groove on its four narrow sides, into which a sealing profile strip frame is inserted, which protrudes somewhat from it.
- the segments are assembled under pressure so that they touch; As a result, the sealing frames come to rest on each of their sides under high pressure, and they are pressed completely into the segment groove. They thus form an actual sealing network in the tunnel, which extends both over the arch of the tunnel and in the direction of the tunnel.
- the sealing profiles themselves are industrially preformed by extruding them into any length and then cutting them to the size that the side length of square segments.
- the sealing cross section should be relatively large.
- the tubbing groove becomes more sensitive to injury the larger it is, so it should be able to be kept as small as possible.
- relatively high sealing pressures are necessary, which in turn are more likely to be achieved by a large profile cross-section; on the other hand, the smallest possible sealing material cross section is sought for reasons of cost.
- the profile strip cross-section and the groove cross-section in the tubbing are coordinated with one another in such a way that an optimally coordinated and profiled strip cross-section can be formed into the smallest possible groove cross-section.
- the concrete groove flanks of the segment can crack off when the segments are pressed in, which sometimes takes place with very considerable forces. All these conditions have an impact on the corner areas of the frame, which is cut from the individual pieces of the profile strip strand.
- the corner areas are created by inserting the pieces into a mold and then injecting unvulcanized rubber into the free mold corners; the
- Rubber is vulcanized by pressure and heat.
- special attention must also be paid to the design of the corner areas. This is easiest if the sealing profile strip is arched in cross section, but without cavities. Then this cross-section remains unchanged even in the corner. The same is not possible in the case of profiles with hollow chambers or heavily undercut areas, since the inserted parts in the hollow chamber area cannot be removed from the mold at all and only very difficult to remove from undercuts after vulcanization.
- a solution must therefore be found that allows the material cross-section in the corner area to be reduced to such an extent that, as in the area of the profile, the material cross-section is not greater than the ventilation volume available from the joint cross-section.
- a larger material cross-section also leads to an explosive effect, which causes the weaker joint flank of the segment to flake off.
- the corner area according to the invention is characterized by the features of claim 1.
- FIG. 3 shows a section along the line A - A in FIG. 2, in a first embodiment
- FIG. 5 shows a detail from FIG. 3 to illustrate forces.
- Fig. 1 shows a tunnel tubbing as hundreds are used for the covering of tunnels that have just been excavated. It carries a sealing frame 1 on its narrow sides, which is embedded in a groove (not visible here) in these sides. The segments are both along the arch and in Tunnel 1 along the length of the chessboard like a string, under pressure, so that the sealing frames are pressed together and seal in this way.
- Each sealing frame 1 is made up of pages
- the corner piece 3 is manufactured in such a way that two sides 2 each form an angle to one another, usually at 90 ° be inserted.
- the mold is then closed and unvulcanized rubber is injected. Under heat and pressure, this vulcanises in a very short time and connects to pages 2 and their ends 4.
- each side 2 must be deformable to the extent that it can completely disappear into the segment groove. Because of the very low compressibility of the rubber, which has also already been mentioned, rubber cannot be simply injected into the mold in accordance with the mold volume. This would make the corner piece 3 to be formed a full body, with the already mentioned risk that the edge of the tubbing bordering the tubbing groove would then be blown away perpendicular to the plane of the latter when the sealing frame was pressed together. One must therefore ensure that the total volume of rubber injected is at most as large as the volume of the corresponding corner of the segmental groove. Recesses must therefore be provided. The mold cores required for this must be arranged in such a way that they can be easily removed after injection. One can already see from this requirement that the above-mentioned recesses cannot simply be continuations of the grooves 6 or the cavities 7, 8, otherwise demoulding would be impossible.
- FIGS. 3 and 4 differ in two details.
- 3 shows the preferred embodiment, which is somewhat more complex to produce, in which the recesses 9 each end in a plane 12 which extends at an angle to the corresponding outer side 13 of the corner piece 3, in such a way that the wall thickness d in near the corner 10 is the lowest and increases steadily from there.
- the plane 12 ' runs parallel to the outside 13, and therefore the wall thickness d is constant. It is a great advantage if this wall thickness resp. 3 the minimum wall thickness is at least one third of the diameter of the recesses 9, 9 '. If these are not circular in cross-section, but e.g. elliptical as in Fig. 2, the mentioned value is related to the smaller diameter.
- the second difference between the two embodiments is how the ends 4 are cut.
- this cutting takes place exactly at right angles to the longitudinal axis of the side 2, which is easier in terms of production technology, but leads to more mass in the corner piece 3.
- the cutting is therefore carried out at an angle before insertion into the mold, and expediently at 45 ° in such a way that the end faces 14 thus created run parallel to the longitudinal axes 15 of the recesses 9. This considerably reduces the volume of the corner piece 3, as a comparison of FIGS. 3 and 4 shows.
- the cavities 7, 8 are open at the end faces 4 mentioned. Since the injection process must take place under a certain minimum pressure or above in order to achieve a good connection of the corner piece 3 to the adjacent ends 4, part of the injected material would flow into the cavities 7, 8 and fill them over a longer distance, which would result in a significant increase in volume of the ends 4 and thus leads to a sharp reduction in the deformability. To avoid this, according to FIGS. 3 and 4, plugs 16 are inserted into the mouths of the cavities 7, 8 (only those for the cavities 8 are shown) and before the sides 2 are inserted into the mold.
- the still protruding ends of the plugs 16 are cut off in accordance with the course of the respective end face, that is to say obliquely in FIG. 3 as the end face 14.
- the oblique cut-off has a great advantage over the straight cut-off according to FIG. 4 5 explains. If the rubber is put under pressure into the injection mold to form the corner piece 3, a force P acts on each stopper 16 perpendicular to the end face and thus perpendicularly on the oblique end of the stopper 16.
- This force P can be broken down into two components , that is, in a component Pl in the longitudinal axis of the plug and in a component P2 transversely to it. The latter presses the plug 16 even more strongly against the wall of the cavity than would be the case simply by inserting it.
- This static friction can be further increased if, instead of the profile cords, small molded parts with a recess conical to the injection area are used, so that the static friction component is reinforced.
- the static friction component can be strengthened again by using profile cords for plugging the cavities, which have the roughest possible surface due to the choice of material or manufacture.
- the length - a plug 16 or. its shortest length in the inclined section advantageously corresponds minimally to the smallest diameter D of the cavity blocked by it at the relevant end. On the one hand, a good adhesion of the plug is achieved, but on the other hand, the deformability of the end 4 is only insignificantly impaired.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Body Structure For Vehicles (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01166/93A CH686900A5 (de) | 1993-04-16 | 1993-04-16 | Eckbereich eines Dichtungsrahmens fuer einen Tunneltubbing. |
CH1166/93 | 1993-04-16 | ||
PCT/CH1994/000072 WO1994024417A1 (de) | 1993-04-16 | 1994-04-11 | Eckbereich eines dichtungsrahmens für einen tunneltübbing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0644980A1 true EP0644980A1 (de) | 1995-03-29 |
EP0644980B1 EP0644980B1 (de) | 1997-07-23 |
Family
ID=4204022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94911044A Expired - Lifetime EP0644980B1 (de) | 1993-04-16 | 1994-04-11 | Eckbereich eines dichtungsrahmens für einen tunneltübbing |
Country Status (6)
Country | Link |
---|---|
US (1) | US5660501A (de) |
EP (1) | EP0644980B1 (de) |
AT (1) | ATE155849T1 (de) |
CH (1) | CH686900A5 (de) |
DE (1) | DE59403441D1 (de) |
WO (1) | WO1994024417A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6039503A (en) * | 1998-01-29 | 2000-03-21 | Silicone Specialties, Inc. | Expansion joint system |
EP1114915B1 (de) * | 2000-01-04 | 2006-05-24 | Volker Hentschel | Tunnelauskleidung |
DK1302626T3 (da) | 2001-10-11 | 2006-04-03 | Daetwyler Ag | Tætningsprofil til tunnelsegmenter |
DE502006000998D1 (de) * | 2006-08-01 | 2008-08-07 | Ein Shemer Rubber Ind | Eckstück eines Dichtungsrahmens für einen Tunneltübbing |
EP4108881A1 (de) * | 2021-06-21 | 2022-12-28 | CTS Cordes tubes & seals GmbH & Co. KG | Ausgeklinkte tübbingecke |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH629869A5 (de) * | 1978-03-23 | 1982-05-14 | Daetwyler Ag | Fugendichtung mit dichtungsstreifen bei stossfugen zwischen einzelnen bauelementen. |
DE3540494A1 (de) * | 1985-11-15 | 1987-05-21 | Phoenix Ag | Dichtungsprofil fuer segmente von tunnelroehren |
FR2602543B1 (fr) * | 1986-08-08 | 1988-11-04 | Phoenix Ag | Joint d'etancheite profile pour segments de tube destines a etre assembles en un tunnel |
GB2209568B (en) * | 1987-09-05 | 1991-10-23 | Phoenix Ag | Sealing profile for tunnel segments |
EP0306581B1 (de) * | 1987-09-10 | 1992-05-13 | Le Joint Francais | Dichtungselement für Tunnelausbausegmente |
FR2651275B1 (fr) * | 1989-08-25 | 1991-12-06 | Joint Francais | Joint d'etancheite profile en elastomere pour voussoir de tunnel. |
CH679510A5 (de) * | 1989-11-10 | 1992-02-28 | Daetwyler Ag | |
FR2655374B1 (fr) * | 1989-12-04 | 1992-04-03 | Joint Francais | Joint d'etancheite en elastomere pour voussoir de tunnel. |
-
1993
- 1993-04-16 CH CH01166/93A patent/CH686900A5/de not_active IP Right Cessation
-
1994
- 1994-04-11 AT AT94911044T patent/ATE155849T1/de active
- 1994-04-11 WO PCT/CH1994/000072 patent/WO1994024417A1/de active IP Right Grant
- 1994-04-11 US US08/356,234 patent/US5660501A/en not_active Expired - Lifetime
- 1994-04-11 EP EP94911044A patent/EP0644980B1/de not_active Expired - Lifetime
- 1994-04-11 DE DE59403441T patent/DE59403441D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9424417A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1994024417A1 (de) | 1994-10-27 |
CH686900A5 (de) | 1996-07-31 |
US5660501A (en) | 1997-08-26 |
EP0644980B1 (de) | 1997-07-23 |
ATE155849T1 (de) | 1997-08-15 |
DE59403441D1 (de) | 1997-09-04 |
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