DE4016247A1 - Sealing strips for tunnel segments - have internal bores connected by tubes to side where water is under pressure so that pressure increases efficiency of seal - Google Patents
Sealing strips for tunnel segments - have internal bores connected by tubes to side where water is under pressure so that pressure increases efficiency of sealInfo
- Publication number
- DE4016247A1 DE4016247A1 DE4016247A DE4016247A DE4016247A1 DE 4016247 A1 DE4016247 A1 DE 4016247A1 DE 4016247 A DE4016247 A DE 4016247A DE 4016247 A DE4016247 A DE 4016247A DE 4016247 A1 DE4016247 A1 DE 4016247A1
- Authority
- DE
- Germany
- Prior art keywords
- tube
- sealing profile
- sealing
- water
- connection
- 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- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000004952 Polyamide Substances 0.000 claims abstract description 3
- 239000004698 Polyethylene Substances 0.000 claims abstract description 3
- 239000004033 plastic Substances 0.000 claims abstract description 3
- 229920003023 plastic Polymers 0.000 claims abstract description 3
- 229920002647 polyamide Polymers 0.000 claims abstract description 3
- -1 polyethylene Polymers 0.000 claims abstract description 3
- 229920000573 polyethylene Polymers 0.000 claims abstract description 3
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 239000004746 geotextile Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 3
- 239000000806 elastomer Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 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
-
- 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
- E21D11/388—Sealing means positioned between adjacent lining members having longitudinal cavities communicating with the exterior on the outer side of the lining elements
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)
Abstract
Description
Die Erfindung betrifft ein Dichtungsprofil gemäß Oberbegriff des Anspruchs 1.The invention relates to a sealing profile according to the preamble of claim 1.
Die Dichtungsrahmen eines Segmentes aus Beton, Stahl, Stahl beton oder Gußeisen bestehen zumeist aus vier zusammengesetzten strangförmigen Dichtungsprofilen (Profilbänder) aus elastomerem Werkstoff, d.h. aus Gummi oder gummiähnlichem Kunststoff, wobei die Rahmenecken vorzugsweise nach dem Injektion-Molding-Verfahren hergestellt werden. Von besonderer Bedeutung ist der Tunnelbau in Tübbing-Bauweise mit spezieller Anordnung der Segmente. Häufig genügt es, wenn jedes Segment einen Dichtungsrahmen aufweist. Unter besonderen Umständen kann es jedoch erforderlich werden, jedes Segment mit einem Doppeldichtungsrahmen zu versehen, wobei die beiden parallel verlaufenden Dichtungs rahmen mit einem zusätzlichen Dichtungsquerprofil (EP-A- 03 37 177) miteinander verbunden sein können. Die Dichtungs profile bzw. Dichtungsrahmen befinden sich meistens in einer entsprechenden Nut (Nuttiefe d, Nutbreite w) des Tunnel- Segmentes. Unter Einwirkung einer Kraft verringert sich der Spaltabstand zweier Tunnel-Segmente von S₀ (Abstand im unbelasteten Zustand) auf S 1 (Abstand im belasteten Zustand). Dadurch werden die beiden gegenüberliegenden Elastomer-Profile zusammengepreßt, was die Abdichtung des Spaltes zur Folge hat. Dabei hat sich herausgestellt, daß Dichtungsprofile, die in Längsrichtung verlaufende Rillennuten und Kanäle besitzen (GB-B-21 70 561, GB-B-21 78 114, GB-B-21 82 987, EP-A- 02 55 600, EP-A-03 06 796), hinsichtlich ihrer Dichtfunktion besonders wirksam sind.The sealing frames of a segment made of concrete, steel, reinforced concrete or cast iron mostly consist of four composite strand-shaped sealing profiles (profiled strips) made of elastomeric material, ie of rubber or rubber-like plastic, the frame corners preferably being produced by the injection molding process. Of particular importance is the tunnel construction in segmental construction with a special arrangement of the segments. It is often sufficient if each segment has a sealing frame. In special circumstances, however, it may be necessary to provide each segment with a double sealing frame, it being possible for the two parallel sealing frames to be connected to one another with an additional sealing cross profile (EP-A-03 37 177). The sealing profiles or sealing frames are usually located in a corresponding groove (groove depth d , groove width w ) of the tunnel segment. Under the action of a force, the gap distance between two tunnel segments decreases from S ₀ (distance in the unloaded state) to S 1 (distance in the loaded state). As a result, the two opposite elastomer profiles are pressed together, which results in the sealing of the gap. It has been found that sealing profiles that have longitudinal grooves and channels (GB-B-21 70 561, GB-B-21 78 114, GB-B-21 82 987, EP-A-02 55 600, EP -A-03 06 796), are particularly effective with regard to their sealing function.
Der Erfindung liegt eine Weiterentwicklung der gattungsgemäßen Dichtungsprofile zugrunde, u.z. unter folgendem Gesichtspunkt: übliche Dichtungsprofile wirken durch die Kontaktspannungen, die beim Zusammenpressen der Profile wirksam werden. Fallweise werden dabei die Zusammenpreßkräfte sehr hoch, wodurch die Montage der Segmente erheblich erschwert sein kann. Durch eine Dichtung gemäß Kennzeichen des Anspruchs 1 wird dieses Problem gelöst.The invention is a further development of the generic Sealing profiles, etc. from the following point of view: usual sealing profiles act through the contact tensions, which take effect when the profiles are pressed together. Case by case the compressive forces are very high, making the Assembly of the segments can be considerably more difficult. By a seal according to the characterizing part of claim 1 becomes this Problem solved.
Die Erfindung wird nun anhand von zwei Ausführungsbeispielen unter Bezugnahme auf schematische Zeichnungen sowie in Verbindung mit Daten aus Dichtheitsprüfungen näher erläutert. Dabei zeigen die Fig. 1 und 2 die erfindungsgemäßen Dichtungs profile im Querschnitt gesehen.The invention will now be explained in more detail on the basis of two exemplary embodiments with reference to schematic drawings and in connection with data from leak tests. Here, FIGS. 1 and 2 Seal profile according to the invention seen in cross section.
Nach Fig. 1 befinden sich in den Nuten bzw. Aussparungen (1, 2) zweier angrenzender Tunnel-Segmente (3, 4) die Dichtungs profile (5, 6), die jeweils vier Rillennuten und zwei Kanäle (EP-A-03 06 796) aufweisen und unversetzt zueinander ange ordnet sind. Jedes Dichtungsprofil hat zur Segment-Außenseite (7) hin eine Verbindung, die als Rohr (8, 9) ausgebildet ist, das an den wasserseitig angeordneten Kanal (10, 11) angeschlossen ist. Da das Rohr aus nicht zusammenpreßbarem Werkstoff (z.B. Stahl, Polyethylen, Polyamid) besteht, bleibt die Verbindung bei der Verpressung der Profile (5, 6) offen, so daß bei Eindringen von Wasser von der Segment-Außenseite (7) her der Kanal (10, 11) durch den Wasserdruck gestützt wird, was zu einer Erhöhung der Dichtleistung führt. Um zu verhindern, daß das Rohr (8, 9) durch eindringenden Schmutz verstopft wird, ist es zweckmäßig, die außenseitige Rohröffnung (12,13) mit einem Filter (z.B. Geotextilstreifen) abzudecken. Of FIG. 1 are located in the grooves or recesses (1, 2) of two adjacent tunnel segments (3, 4) the sealing profile (5, 6), each of the four flutes and two channels (EP-A-03 06 796) and are arranged offset from each other. Each sealing profile has a connection to the outside of the segment ( 7 ), which is designed as a tube ( 8 , 9 ) which is connected to the channel ( 10 , 11 ) arranged on the water side. Since the pipe is made of non-compressible material (e.g. steel, polyethylene, polyamide), the connection remains open when the profiles ( 5 , 6 ) are pressed in, so that if water penetrates from the outside of the segment ( 7 ), the channel ( 10 , 11 ) is supported by the water pressure, which leads to an increase in the sealing performance. In order to prevent the pipe ( 8 , 9 ) from becoming blocked by dirt, it is advisable to cover the outside pipe opening ( 12, 13 ) with a filter (eg geotextile strips).
Im folgenden sind die Ergebnisse eines Vergleichsversuches zusammengefaßt, der mit einem Dichtungsprofil gemäß Fig. 1 durchgeführt wurde.The results of a comparative test are summarized below, which was carried out with a sealing profile according to FIG. 1.
Versuchsbedingungen:Test conditions:
S₀=10 mm
S₁=6 mm
d=6 mm
w=37 mm (entspricht der Profilbreite an der Basisseite) S ₀ = 10 mm
S ₁ = 6 mm
d = 6 mm
w = 37 mm (corresponds to the profile width on the base side)
Versatz: 10 mm
Kreuzstoßprüfung (2 bar/15 min/schrittweise Drucksteigerung)
Härte in Shore A: 65°
Rohrlänge: 20 mm
Rohrdurchmesser (Innen): 2 mmOffset: 10 mm
Cross impact test (2 bar / 15 min / gradual pressure increase)
Shore A hardness: 65 °
Pipe length: 20 mm
Pipe diameter (inside): 2 mm
Versuchsergebnisse:Test results:
Dichtleistung (ohne rohrförmige Verbindung): 4 bar
Dichtleistung (mit rohrförmiger Verbindung): 8 barSealing performance (without tubular connection): 4 bar
Sealing performance (with tubular connection): 8 bar
Nach Fig. 2 befinden sich in den Nuten (1, 2) der Tunnel- Segmente (3, 4) die Dichtungsprofile (14, 15) mit zweireihiger Anordnung der Kanäle (GB-B-21 82 987), wobei der wasserseitig angeordnete Kanal (16, 17) zur Segment-Außenseite (7) hin die erfindungsgemäße Verbindung aufweist, wobei diese hier ebenfalls als Rohr (8, 9) ausgebildet ist.According to Fig. 2 are in the grooves ( 1 , 2 ) of the tunnel segments ( 3 , 4 ), the sealing profiles ( 14 , 15 ) with a two-row arrangement of the channels (GB-B-21 82 987), the channel arranged on the water side ( 16 , 17 ) to the outside of the segment ( 7 ) has the connection according to the invention, this also being designed as a tube ( 8 , 9 ).
Im folgenden sind die Ergebnisse eines Vergleichsversuches zusammengefaßt, der mit einem Dichtungsprofil gemäß Fig. 2 durchgeführt wurde.The results of a comparative test are summarized below, which was carried out with a sealing profile according to FIG. 2.
Versuchsbedingungen:Test conditions:
S₀=13 mm
S₁=6 mm
d=10 mm
w=26 mm (entspricht der Profilbreite an der Basisseite) S ₀ = 13 mm
S ₁ = 6 mm
d = 10 mm
w = 26 mm (corresponds to the profile width on the base side)
Versatz: 0 mm
T-Stoßprüfung (2 bar/15 min/schrittweise Drucksteigerung)
Härte in Shore A: 63°
Rohrlänge: 20 mm
Rohrdurchmesser (Innen): 2 mmOffset: 0 mm
T-shock test (2 bar / 15 min / gradual pressure increase)
Shore A hardness: 63 °
Pipe length: 20 mm
Pipe diameter (inside): 2 mm
Versuchsergebnisse:Test results:
Dichtleistung (ohne rohrförmige Verbindung): 4 bar
Dichtleistung (mit rohrförmiger Verbindung): 10 bar.Sealing performance (without tubular connection): 4 bar
Sealing performance (with tubular connection): 10 bar.
Im Rahmen sämtlicher Versuche hatten die Rohre längsverlaufende Öffnungen. Dabei waren die außenseitigen Öffnungen, z.B. die Rohröffnungen (12, 13), nicht mit einem Filter abgedeckt.In all experiments, the pipes had longitudinal openings. The outside openings, eg the pipe openings ( 12 , 13 ), were not covered with a filter.
Claims (7)
- a) zur Druckwasserseite (7) hin wenigstens eine offene Verbindung besitzt, die
- b) auch bei Verpressung der Profile offen bleibt, wobei
- c) zumindest ein wasserseitig angeordneter Kanal (10, 11; 16, 17) durch diese Verbindung zwecks Erhöhung der Dichtleistung durch den Wasserdruck gestützt wird.
- a) to the pressurized water side ( 7 ) has at least one open connection
- b) remains open even when the profiles are pressed, whereby
- c) at least one channel ( 10 , 11 ; 16 , 17 ) arranged on the water side is supported by this connection in order to increase the sealing performance by the water pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4016247A DE4016247A1 (en) | 1989-05-24 | 1990-05-19 | Sealing strips for tunnel segments - have internal bores connected by tubes to side where water is under pressure so that pressure increases efficiency of seal |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3916843 | 1989-05-24 | ||
| DE4016247A DE4016247A1 (en) | 1989-05-24 | 1990-05-19 | Sealing strips for tunnel segments - have internal bores connected by tubes to side where water is under pressure so that pressure increases efficiency of seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4016247A1 true DE4016247A1 (en) | 1990-11-29 |
Family
ID=25881206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4016247A Withdrawn DE4016247A1 (en) | 1989-05-24 | 1990-05-19 | Sealing strips for tunnel segments - have internal bores connected by tubes to side where water is under pressure so that pressure increases efficiency of seal |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4016247A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074711A (en) * | 1989-08-19 | 1991-12-24 | Phoenix Ag | Profiled seal for tunnel segments |
| CN102444409A (en) * | 2011-12-29 | 2012-05-09 | 同济大学 | Elastic sealing pad for sealing seams among shield tunnel pipe segments by utilizing water pressure |
| CN104612723A (en) * | 2015-02-02 | 2015-05-13 | 同济大学 | Waterproof sealing structure for duct pipe connecting joint of shield tunnel |
| CN105257319A (en) * | 2014-07-15 | 2016-01-20 | 中交第二公路勘察设计研究院有限公司 | Elastic sealing gasket for joints of shield tunnel segments |
-
1990
- 1990-05-19 DE DE4016247A patent/DE4016247A1/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074711A (en) * | 1989-08-19 | 1991-12-24 | Phoenix Ag | Profiled seal for tunnel segments |
| CN102444409A (en) * | 2011-12-29 | 2012-05-09 | 同济大学 | Elastic sealing pad for sealing seams among shield tunnel pipe segments by utilizing water pressure |
| CN105257319A (en) * | 2014-07-15 | 2016-01-20 | 中交第二公路勘察设计研究院有限公司 | Elastic sealing gasket for joints of shield tunnel segments |
| CN104612723A (en) * | 2015-02-02 | 2015-05-13 | 同济大学 | Waterproof sealing structure for duct pipe connecting joint of shield tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |