EP0841468B1 - Fire protection system in a reinforced concrete tubings linned tunnel - Google Patents
Fire protection system in a reinforced concrete tubings linned tunnel Download PDFInfo
- Publication number
- EP0841468B1 EP0841468B1 EP96118802A EP96118802A EP0841468B1 EP 0841468 B1 EP0841468 B1 EP 0841468B1 EP 96118802 A EP96118802 A EP 96118802A EP 96118802 A EP96118802 A EP 96118802A EP 0841468 B1 EP0841468 B1 EP 0841468B1
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- European Patent Office
- Prior art keywords
- concrete
- reinforced concrete
- tunnel
- reinforced
- plastic
- 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.)
- Expired - Lifetime
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 45
- 239000004567 concrete Substances 0.000 claims abstract description 31
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 239000011324 bead Substances 0.000 claims 1
- 239000003500 flue dust Substances 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000007792 addition Methods 0.000 abstract 2
- 239000011371 regular concrete Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 9
- 239000000654 additive Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000009415 formwork Methods 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 2
- 239000011372 high-strength concrete Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
Definitions
- the invention relates to a reinforced concrete tunnel made of reinforced concrete tubing with a device for fire protection.
- reinforced concrete denotes a concrete that is reinforced with steel fibers.
- reinforced concrete tunnels in traffic tunnel construction must be protected against fire loads of up to 120 minutes and a temperature maximum of 1,350 ° C.
- the reinforced concrete tubbings can be constructed as a ring-shaped, closed reinforced concrete tubbings or from corresponding tubbings segments.
- the fire protection devices are additional devices, namely additional tunnel linings in the form of fire protection plates.
- the fastening of these tunnel linings in the curved tunnel cross-section requires considerable technical effort and is particularly cost-intensive.
- the proportion of joints in the segment lining is large. This is particularly the case when the reinforced concrete segments are composed of segments.
- the joints need to be observed and, if necessary, also maintained.
- tunnel linings installed for fire protection interferes. If the joints are not watertight, escaping moisture can impair the durability of the fire protection linings.
- a fire protection system for tunnel walls is known from DE 37 31 124 A.
- This fire protection system has heat-insulating and fire-resistant clothing made of insulating materials arranged on the tunnel wall, which preferably consists of a combination of fire protection mats and ceramic fiber mats.
- the clothing Towards the inside of the tunnel, the clothing is delimited by a self-supporting shell, which is formed from prefabricated, rigidly connected individual elements. The individual elements are connected to the tunnel wall in a shock-absorbing manner.
- these known fire protection measures are complex and, on the other hand, leave something to be desired in terms of fire safety.
- the invention is based on the technical problem of creating a reinforced concrete tunnel with high fire protection security, which is free of fire protection linings.
- the invention teaches a reinforced concrete tunnel made of reinforced concrete tubing with a device for fire protection and the features the reinforced concrete segments consist of a solid concrete with a final strength of 45 N / mm 2 and higher, the solid concrete has reinforcement made of steel fibers with a content of 30 to 80 kg per cubic meter of fresh concrete, the solid concrete has an addition of 10 to 3000 g plastic fibers and / or plastic balls per cubic meter of fresh concrete, the solid concrete of the reinforced concrete tubing has aggregates with a grain size of greater than 0 to 32 mm.
- solid concrete denotes a concrete with a final strength of 45 N / mm 2 and higher up to high-strength concrete with strength classes going beyond DIN 1045.
- the solid concrete is otherwise constructed according to the rules of architecture. It has the usual aggregates with a grain size greater than 0 to 32 mm. It is known from practice that concrete with steel fiber reinforcement has improved fire behavior compared to normal concrete, even with reinforced concrete segments in tunnel construction.
- the invention is based on the knowledge that a solid concrete in the sense of the invention, which is equipped with steel fibers and plastic fibers and / or plastic balls as described, by coordinating the content of steel fibers on the one hand and of plastic fibers and / or plastic balls on the other hand also for the specified extreme fire loads can be set fire-proof.
- the specific coordination can easily be worked out in the laboratory from case to case. Surprisingly, disruptive flaking can be completely avoided with the specified fire loads.
- the steel fibers, the plastic fibers and the plastic balls are the ones that are common as reinforcement or additives in concrete construction.
- quartz disintegrates at approximately 870 ° C. one embodiment of the invention is characterized in that quartz-free additives, in particular basalt additives, are used as the additive.
- quartz-free additives in particular basalt additives
- the content of plastic fibers and / or plastic balls it must always be ensured that disturbing high water vapor pressures cannot develop in the solid concrete under fire.
- mixtures of sand and gravel or sand and grit within the specified grain sizes can also be used without further ado. In these cases, however, it is necessary to work with higher contents of steel fibers as well as plastic fibers and / or plastic balls.
- the invention is based on the further finding that mechanical damage or breakouts in the area of the abutting surfaces of the segments in the reinforced concrete tunnel composite, in particular also on the edges, can impair fire safety in these areas. Such damage can occur when prefabricated reinforced concrete segments are installed in the reinforced concrete tunnel network. In a preferred embodiment of the invention, such damage is prevented.
- the subject of the invention is a reinforced concrete tunnel made of reinforced concrete segments with a device for fire protection, wherein reinforcement cages made of reinforcing steel are arranged in the solid concrete in the area of the butt joints of the reinforced concrete segments.
- the butt joints of the reinforced concrete segments are regularly open joints in a reinforced concrete tunnel. This results in a two-sided fire attack and increased fire exposure. This According to the invention, increased fire exposure is controlled by the combination described with reinforcement cages.
- the reinforcement cages can be easily installed in the reinforced concrete segments. When concreting the reinforced concrete segments or the segments for the reinforced concrete segments, they can be fixed to the segmental formwork with a simple retaining structure. If the reinforced concrete tubbing is finished, the fastening elements can be removed. For example, special threaded sleeves can be screwed to the reinforcement cage. Prepared screw holes in the side formwork of the tubbing can then be used to screw screws through the formwork into these threaded sleeves without difficulty. The reinforcement cages are held securely in the segmental formwork using these screw connections until the hardened concrete sets. Before stripping, the screws are loosened and the tubbing can be lifted out of the form without difficulty.
- - Butt joints refers to the joints between the reinforced concrete segments arranged in the longitudinal direction of the reinforced concrete tunnel as well as between the segments of the reinforced concrete segments when working with them.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
Die Erfindung betrifft einen Stahlbetontunnel aus Stahlbetontübbings mit Einrichtung zur Brandschutzsicherung. Stahlbeton bezeichnet im Rahmen der Erfindung einen Beton, der mit Stahlfasern bewehrt ist. Nach den bestehenden Vorschriften und Forderungen sind Stahlbetontunnel im Verkehrstunnelbau gegen Brandbelastungen bis zu 120 Minuten und einem Temperaturmaximum von 1.350 °C zu sichern. Die Stahlbetontübbings können als ringförmig geschlossene Stahlbeton-Volltübbings oder aus entsprechenden Tübbingsegmenten ringförmig aufgebaut sein.The invention relates to a reinforced concrete tunnel made of reinforced concrete tubing with a device for fire protection. In the context of the invention, reinforced concrete denotes a concrete that is reinforced with steel fibers. According to the existing regulations and requirements, reinforced concrete tunnels in traffic tunnel construction must be protected against fire loads of up to 120 minutes and a temperature maximum of 1,350 ° C. The reinforced concrete tubbings can be constructed as a ring-shaped, closed reinforced concrete tubbings or from corresponding tubbings segments.
Bei den Stahlbetontunneln, von denen die Erfindung ausgeht, sind die Einrichtungen zur Brandschutzsicherung Zusatzeinrichtungen, nämlich zusätzliche Tunnelauskleidungen in Form von Brandschutzplatten. Die Befestigung dieser Tunnelauskleidungen im gekrümmten Tunnelquerschnitt erfordert erhebliche technische Aufwendungen und ist besonders kostenintensiv. Bei einem Stahlbetontunnel aus Stahlbetontübbings ist im Tübbingausbau der Fugenanteil groß. Das ist insbesondere dann der Fall, wenn die Stahlbetontübbings aus Tübbingsegmenten zusammengesetzt sind. Aus Sicherheitsgründen bedürfen die Fugen der Beobachtung und gegebenenfalls auch der Wartung. Insoweit stören zur Brandschutzsicherung angebrachte Tunnelauskleidungen. Sind die Fugen nicht dicht, so kann austretende Feuchtigkeit die Dauerhaftigkeit der Brandschutzauskleidungen beeinträchtigen.In the reinforced concrete tunnels from which the invention is based, the fire protection devices are additional devices, namely additional tunnel linings in the form of fire protection plates. The fastening of these tunnel linings in the curved tunnel cross-section requires considerable technical effort and is particularly cost-intensive. In a reinforced concrete tunnel made of reinforced concrete segments, the proportion of joints in the segment lining is large. This is particularly the case when the reinforced concrete segments are composed of segments. For safety reasons, the joints need to be observed and, if necessary, also maintained. In this respect, tunnel linings installed for fire protection interferes. If the joints are not watertight, escaping moisture can impair the durability of the fire protection linings.
Aus DE 37 31 124 A ist ein Brandschutzsystem für Tunnelbauwandungen bekannt. Dieses Brandschutzsystem weist eine an der Tunnelwandung angeordnete wärmedämmende und feuerbeständige Bekleidung aus Isolierstoffen auf, die vorzugsweise aus einer Kombination von Brandschutzmatten und Keramikfasermatten besteht. Zum Tunnelinneren hin ist die Bekleidung durch eine selbsttragende Schale begrenzt, die aus vorgefertigten, biegesteif miteinander verbundenen Einzelelementen gebildet ist. Die Einzelelemente sind stoßabsorbierend mit der Tunnelwandung verbunden. Diese bekannten Maßnahmen zur Brandschutzsicherung sind einerseits aufwendig und lassen zum anderen im Hinblick auf die Brandschutzsicherheit zu wünschen übrig.A fire protection system for tunnel walls is known from DE 37 31 124 A. This fire protection system has heat-insulating and fire-resistant clothing made of insulating materials arranged on the tunnel wall, which preferably consists of a combination of fire protection mats and ceramic fiber mats. Towards the inside of the tunnel, the clothing is delimited by a self-supporting shell, which is formed from prefabricated, rigidly connected individual elements. The individual elements are connected to the tunnel wall in a shock-absorbing manner. On the one hand, these known fire protection measures are complex and, on the other hand, leave something to be desired in terms of fire safety.
In DE 40 06 972 A1 wird ein. Brandschutz für Tunnel beschrieben. Im Brandfall kommt es zu Abplatzungen an der Betonschale des Tunnels und die Abplatzungen verhalten sich geschossartig, so dass Personen gefährdet werden können. Um diese Gefahr zu beseitigen wird eine Fangschicht für abplatzende Betonteile vorgesehen. Die Fangschicht kann durch Gewebeeinlagen oder Fließeinlagen gebildet sein. Diese Maßnahmen sind aber nur wenig effektiv und bringen keine ausreichende Brandschutzsicherheit.DE 40 06 972 A1 describes a. Fire protection for tunnels described. In the event of a fire, the concrete shell of the tunnel is chipped and the chipping behaves like a floor so that people can be endangered. In order to eliminate this danger, a catch layer for flaking concrete parts is provided. The trapping layer can be formed by fabric or flow inlays. However, these measures are not very effective and do not provide adequate fire safety.
Der Erfindung liegt das technische Problem zugrunde, einen Stahlbetontunnel mit hoher Brandschutzsicherheit zu schaffen, der von Brandschutzauskleidungen frei ist.The invention is based on the technical problem of creating a reinforced concrete tunnel with high fire protection security, which is free of fire protection linings.
Zur Lösung dieses technischen Problems lehrt die Erfindung einen Stahlbetontunnel aus Stahlbetontübbings mit Einrichtung zur Brandschutzsicherung und den Merkmalen
die Stahlbetontübbings bestehen aus einem Fest-Beton mit einer Endfestigkeit von 45 N/mm2 und höher,
der Fest-Beton weist eine Bewehrung aus Stahlfasern mit einem Gehalt von 30 bis 80 kg pro Kubikmeter Frischbeton auf,
der Fest-Beton weist einen Zusatz von 10 bis 3000 g Kunststofffasern und/oder Kunststoffkugeln pro Kubikmeter Frischbeton auf,
wobei der Fest-Beton der Stahlbetontübbings Zuschlagstoffe mit einer Körnung von größer 0 bis 32 mm aufweist. Der Gehalt an Stahlfasern einerseits, der Zusatz an Kunststofffasern und/oder Kunststoffkugeln andererseits werden so aufeinander abgestimmt, dass der Stahlbetontunnel bei Brandbelastungen von bis zu 1.350 °C und bis zu 120 Minuten den Brandschutzbestimmungen entspricht. Fest-Beton bezeichnet im Rahmen der Erfindung und in bezug auf die Stahlbetontübbings einen Beton mit einer Endfestigkeit von 45 N/mm2 und höher bis zu hochfestem Beton mit über DIN 1045 hinausgehenden Festigkeitsklassen. Im Rahmen der Erfindung ist der Fest-Beton im übrigen nach den Regeln der Baukunst aufgebaut. Er besitzt übliche Zuschlagstoffe mit einer Körnung von größer 0 bis 32 mm. Es ist aus der Praxis bekannt, dass Beton mit Stahlfaserbewehrung im Vergleich mit Normalbeton verbessertes Brandverhalten aufweist, und zwar auch bei Stahlbetontübbings im Tunnelbau. Das bringt jedoch keine ausreichende Verbesserung der Brandschutzsicherheit im Sinne der einleitenden Ausführungen. Um hochfesten Beton für die Errichtung von im Brandfall nach Maßgabe von DIN 4102 feuerbeständigen Bauwerken zu verwenden, ist es bekannt, mit Hilfe von Fasern, insbesondere Kunststofffasern, Mikroporen mit definierten Porenparametern in der Zementleimmatrix zu erzeugen. Das ist für die Herstellung von Stahlbetontübbings für den Tunnelausbau eine aufwendige, nicht leicht reproduzierbar zu verwirklichende Maßnahme.To solve this technical problem, the invention teaches a reinforced concrete tunnel made of reinforced concrete tubing with a device for fire protection and the features
the reinforced concrete segments consist of a solid concrete with a final strength of 45 N / mm 2 and higher,
the solid concrete has reinforcement made of steel fibers with a content of 30 to 80 kg per cubic meter of fresh concrete,
the solid concrete has an addition of 10 to 3000 g plastic fibers and / or plastic balls per cubic meter of fresh concrete,
the solid concrete of the reinforced concrete tubing has aggregates with a grain size of greater than 0 to 32 mm. The content of steel fibers on the one hand, the addition of plastic fibers and / or plastic balls on the other hand are coordinated so that the reinforced concrete tunnel complies with fire protection regulations for fire loads of up to 1,350 ° C and up to 120 minutes. In the context of the invention and in relation to the reinforced concrete tubbing, solid concrete denotes a concrete with a final strength of 45 N / mm 2 and higher up to high-strength concrete with strength classes going beyond DIN 1045. In the context of the invention, the solid concrete is otherwise constructed according to the rules of architecture. It has the usual aggregates with a grain size greater than 0 to 32 mm. It is known from practice that concrete with steel fiber reinforcement has improved fire behavior compared to normal concrete, even with reinforced concrete segments in tunnel construction. However, this does not bring about a sufficient improvement in Fire safety in the sense of the introductory remarks. In order to use high-strength concrete for the construction of fire-resistant structures in accordance with DIN 4102 in the event of fire, it is known to create micropores with defined pore parameters in the cement paste matrix with the help of fibers, in particular plastic fibers. For the production of reinforced concrete segments for tunnel expansion, this is a complex measure that cannot be easily reproduced.
Die Erfindung geht von der Erkenntnis aus, dass ein Fest-Beton im Sinne der Erfindung, der wie beschrieben mit Stahlfasern sowie Kunststofffasern und/oder Kunststoffkugeln ausgerüstet ist, durch Abstimmung des Gehaltes an Stahlfasern einerseits sowie an Kunststofffasern und/oder Kunststoffkugeln andererseits auch für die angegebenen extremen Brandbelastungen brandsicher eingestellt werden kann. Die konkrete Abstimmung kann von Anwendungsfall zu Anwendungsfall ohne weiteres im Labor erarbeitet werden. Überraschenderweise können bei den angegebenen Brandbelastungen störende Abplatzungen vollständig vermieden werden. Die Stahlfasern, die Kunststofffasern und die Kunststoffkugeln sind die, die als Bewehrung oder Zusatzstoffe im Betonbau üblich sind.The invention is based on the knowledge that a solid concrete in the sense of the invention, which is equipped with steel fibers and plastic fibers and / or plastic balls as described, by coordinating the content of steel fibers on the one hand and of plastic fibers and / or plastic balls on the other hand also for the specified extreme fire loads can be set fire-proof. The specific coordination can easily be worked out in the laboratory from case to case. Surprisingly, disruptive flaking can be completely avoided with the specified fire loads. The steel fibers, the plastic fibers and the plastic balls are the ones that are common as reinforcement or additives in concrete construction.
Im einzelnen kann die Lehre der Erfindung so, wie es im folgenden erläutert wird, weiter ausgebildet und optimiert werden. Da Quarz bei etwa 870 °C zerfällt, ist eine Ausführungsform der Erfindung dadurch gekennzeichnet, dass als Zuschlagstoff quarzfreie Zuschlagstoffe, insbesondere Basalt-Zuschlagstoffe, verwendet werden. In diesem Falle kann mit einem verhältnismäßig geringen Gehalt an Stahlfasern sowie Kunststofffasern und/oder Kunststoffkugeln im Rahmen der angegebenen Bereiche gearbeitet werden. In bezug auf den Gehalt an Kunststofffasern und/oder Kunststoffkugeln muss stets darauf geachtet werden, dass unter Brandbelastung störend hohe Wasserdampfdrücke in dem Fest-Beton sich nicht entwickeln können. Im Rahmen der Erfindung kann ohne weiteres auch mit Gemischen aus Sand und Kies bzw. Sand und Splitt innerhalb der angegebenen Korngrößen gearbeitet werden. Es ist in diesen Fällen allerdings mit höheren Gehalten an Stahlfasern sowie Kunststofffasern und/oder Kunststoffkugeln zu arbeiten.In particular, the teaching of the invention, as will be explained in the following, can be further developed and optimized. Since quartz disintegrates at approximately 870 ° C., one embodiment of the invention is characterized in that quartz-free additives, in particular basalt additives, are used as the additive. In this case can be worked with a relatively low content of steel fibers and plastic fibers and / or plastic balls within the specified ranges. With regard to the content of plastic fibers and / or plastic balls, it must always be ensured that disturbing high water vapor pressures cannot develop in the solid concrete under fire. Within the scope of the invention, mixtures of sand and gravel or sand and grit within the specified grain sizes can also be used without further ado. In these cases, however, it is necessary to work with higher contents of steel fibers as well as plastic fibers and / or plastic balls.
Der Erfindung liegt die weitere Erkenntnis zugrunde, dass mechanische Beschädigungen oder Ausbrüche im Bereich der Stoßflächen der Tübbings im Stahlbetontunnelverbund, insbesondere auch an den Kanten, die Brandsicherheit in diesen Bereichen beeinträchtigen können. Solche Beschädigungen können beim Einbau vorgefertigter Stahlbetontübbings in den Stahlbetontunnelverbund auftreten. Bei einer bevorzugten Ausführungsform der Erfindung werden solche Beschädigungen verhindert. Insoweit ist Gegenstand der Erfindung ein Stahlbetontunnel aus Stahlbetontübbings mit Einrichtung zur Brandschutzsicherung, wobei im Bereich der Stoßfugen der Stahlbetontübbings Bewehrungskörbe aus Betonstahl in dem Fest-Beton angeordnet sind.The invention is based on the further finding that mechanical damage or breakouts in the area of the abutting surfaces of the segments in the reinforced concrete tunnel composite, in particular also on the edges, can impair fire safety in these areas. Such damage can occur when prefabricated reinforced concrete segments are installed in the reinforced concrete tunnel network. In a preferred embodiment of the invention, such damage is prevented. In this respect, the subject of the invention is a reinforced concrete tunnel made of reinforced concrete segments with a device for fire protection, wherein reinforcement cages made of reinforcing steel are arranged in the solid concrete in the area of the butt joints of the reinforced concrete segments.
Das ist eine Maßnahme von besonderer Bedeutung: Die Stoßfugen der Stahlbetontübbings sind bei einem Stahlbetontunnel regelmäßig offene Fugen. Daraus resultieren ein zweiseitiger Brandangriff und erhöhte Brandbelastung. Diese erhöhte Brandbelastung wird erfindungsgemäß durch die beschriebene Kombination mit Bewehrungskörben beherrscht.This is a measure of particular importance: the butt joints of the reinforced concrete segments are regularly open joints in a reinforced concrete tunnel. This results in a two-sided fire attack and increased fire exposure. This According to the invention, increased fire exposure is controlled by the combination described with reinforcement cages.
Die Bewehrungskörbe lassen sich einfach in die Stahlbetontübbings einbauen. Sie können beim Betonieren der Stahlbetontübbings oder der Segmente für die Stahlbetontübbings mit einer einfachen Festhaltekonstruktion an der Tübbingschalung fixiert werden. Ist der Stahlbetontübbing fertigt betoniert, so können die Befestigungselemente entfernt werden. Zum Beispiel können spezielle Gewindehülsen mit dem Bewehrungskorb verschraubt werden. Durch vorbereitete Schraubenlöcher in der Seitenschalung der Tübbings können dann ohne Schwierigkeiten Schrauben durch die Schalung in diese Gewindehülsen eingedreht werden. Die Bewehrungskörbe werden so bis zum Abbinden des Fest-Betons über diese Schraubverbindungen sicher in der Tübbingschalung gehalten. Vor dem Ausschalen werden die Schrauben gelöst und der Tübbing kann ohne Schwierigkeiten aus der Schalform gehoben werden. - Stoßfugen bezeichnet sowohl die Fugen zwischen den in Längsrichtung des Stahlbetontunnels gereihten Stahlbetontübbings als auch zwischen den Segmenten der Stahlbetontübbings, wenn mit solchen gearbeitet wird.The reinforcement cages can be easily installed in the reinforced concrete segments. When concreting the reinforced concrete segments or the segments for the reinforced concrete segments, they can be fixed to the segmental formwork with a simple retaining structure. If the reinforced concrete tubbing is finished, the fastening elements can be removed. For example, special threaded sleeves can be screwed to the reinforcement cage. Prepared screw holes in the side formwork of the tubbing can then be used to screw screws through the formwork into these threaded sleeves without difficulty. The reinforcement cages are held securely in the segmental formwork using these screw connections until the hardened concrete sets. Before stripping, the screws are loosened and the tubbing can be lifted out of the form without difficulty. - Butt joints refers to the joints between the reinforced concrete segments arranged in the longitudinal direction of the reinforced concrete tunnel as well as between the segments of the reinforced concrete segments when working with them.
Claims (4)
- A reinforced concrete tunnel made of reinforced concrete tubbings comprising a device to ensure fire prevention and having the features1.1) the reinforced concrete tubbings consist of hardened concrete with an ultimate strength of 45 N/mm2 and higher,1.2) the hardened concrete has a steel fibre reinforcement with a content of 30 to 80 kg per cubic metre of freshly mixed concrete,1.3) the hardened concrete has an admixture of 10 to 3000 g plastic fibres and/or plastic beads per cubic metre of freshly mixed concrete,wherein the hardened concrete of the reinforced concrete tubbings has aggregates having a grain size of 0 to 32 mm.
- The reinforced concrete tunnel according to claim 1, wherein quartz-free aggregates, especially basalt aggregates, are used as aggregates.
- The reinforced concrete tunnel according to any one of claims 1 or 2, wherein the hardened concrete has an admixture of flue-dust of up to 70 kg per cubic metre of freshly mixed concrete.
- The reinforced concrete tunnel according to any one of claims 1 to 3, wherein reinforcing baskets made of reinforced concrete are arranged in the hardened concrete in the area of the butt joints of the reinforced concrete tubbings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19645604A DE19645604A1 (en) | 1996-11-06 | 1996-11-06 | Reinforced concrete tunnel made of reinforced concrete segments |
| DE19645604 | 1996-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0841468A1 EP0841468A1 (en) | 1998-05-13 |
| EP0841468B1 true EP0841468B1 (en) | 2004-03-31 |
Family
ID=7810717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96118802A Expired - Lifetime EP0841468B1 (en) | 1996-11-06 | 1996-11-23 | Fire protection system in a reinforced concrete tubings linned tunnel |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0841468B1 (en) |
| AT (1) | ATE263308T1 (en) |
| DE (2) | DE19645604A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10114616A1 (en) * | 2001-03-23 | 2002-10-02 | Hochtief Ag Hoch Tiefbauten | Tubbing, especially high-performance tubbing |
| AT414009B (en) * | 2002-04-17 | 2006-08-15 | Kubek Erhard Dipl Ing | CONCRETE CONSTRUCTION |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2153532A1 (en) * | 1971-10-27 | 1973-05-03 | Bayer Ag | Curing porous silicate foams - which may be used in granular form as soil additives, opt contng pesticides etc |
| US3773700A (en) * | 1972-02-04 | 1973-11-20 | Dow Chemical Co | Normally crystalline vinylidene chloride polymer latex and fiber modified cement compositions having enhanced elastic modulus |
| GB1450091A (en) * | 1973-04-16 | 1976-09-22 | Chubb & Sons Lock & Safe Co | Concrete security structures |
| US4725632A (en) * | 1985-12-12 | 1988-02-16 | Vess-Tech Industries, Inc. | Cementitious composition |
| US5002610A (en) * | 1985-12-12 | 1991-03-26 | Rhone-Poulenc Basic Chemicals Co. | Process for making reinforced magnesium phosphate fast-setting cements |
| ZW2488A1 (en) * | 1987-03-25 | 1988-07-06 | Strata Control Systems Pty Ltd | Hydraulic setting compositions |
| DE3731124A1 (en) * | 1987-08-06 | 1989-02-16 | Buchtal Gmbh | Fireproofing system for structures, in particular for tunnel walls |
| DE4006972A1 (en) * | 1990-03-06 | 1991-09-12 | Studiengesellschaft Fuer Unter | Concrete structure fire-protection system - comprises arresting layer on side towards area used by public |
| DE4025212A1 (en) * | 1990-08-09 | 1992-02-13 | Huels Troisdorf | TRAFFIC TUNNEL FOR COLD REGIONS |
-
1996
- 1996-11-06 DE DE19645604A patent/DE19645604A1/en not_active Withdrawn
- 1996-11-23 AT AT96118802T patent/ATE263308T1/en active
- 1996-11-23 EP EP96118802A patent/EP0841468B1/en not_active Expired - Lifetime
- 1996-11-23 DE DE59610957T patent/DE59610957D1/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| ATE263308T1 (en) | 2004-04-15 |
| EP0841468A1 (en) | 1998-05-13 |
| DE59610957D1 (en) | 2004-05-06 |
| DE19645604A1 (en) | 1998-05-07 |
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