AW-TUN 10 - US P R O D U C TS I N APPLICA TIO N: TUNNEL CON STR U CTION Introduction Mountings in tunnel construction Modern industrial societies need efficient and reliable traffic infrastructure, for both road and rail. High speed modes of transport require routes with gentle curves and inclined sections with small gradients. The topographical conditions in most countries require tunnels and bridges when planning the route, and these are very expensive engineering structures. Tunnel construction requires a large amount of geological investigation and static calculation of the tunnel cross section. Issues such as safety, fire protection, corrosion protection, technical equipment and the durability of the construction require a substantial amount of planning which usually takes years. Owing to the efficiency of the tools, machines and high-strength concretes which are available today, tunnels can now be built in much shorter times than was possible a few decades ago. The safety equipment, such as signalling devices, lighting, ventilation systems, retrieval anchors and emergency exits contribute substantially to safety in tunnels. Items from the HALFEN product range are used in different areas of tunnel construction for adjustable and cost-effective mountings and reinforcement. 2 The regulations listed below contain definitive references for the range of mounting designs: ZTV-ING (Additional technical contract conditions and guide­lines for civil engineering works. Edition March 2003, Part 5.1 and 5.2 (Road tunnels by closed or open cut method) • Mountings for tunnel installations must be made from stainless steel with material numbers 1.4529 or 1.4547 and Resistance class IV according to German Industrial Standard DIN EN ISO 3506 and according to DIN EN 10088. Official approval certificate No. Z-30.3-6 of “Products, connecting devices and structural components made from stainless steel” • Table 1: Classification of grades of steel according to strength classes and corrosion resistance classes as well as typical applications for structural components and connecting devices. Swiss standard SIA 179 (Swiss association of architects and engineers, Edition 1998, Recommendations for mountings in concrete and masonry) • Section 4,14. Mounting elements made from stainless steel or special materials • Table 10: Corrosion resistance class IV, Material No. 1.4529, 1.4547 • Table 11: stainless steel Group IV: Well suited for use in tunnels. © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com P R O D U C TS I N A PPLICA TIO N: TUNNEL CON STR U CTION Contents Application ----------- Page Mountings in tunnel construction, regulations and recommendations 2 Halfen channels for tunnel construction / HCR steel 4 Road tunnels / mounting the lighting system 5 Road tunnels / reinforcement connections 6 Road tunnels / retrieval anchors 7 Railway tunnels / contact-wire mountings 8 Railway tunnels / earthing of HALFEN channels 9 Road tunnels / ventilation duct supports 10 References11 Addresses12 Cross section of a typical road tunnel (Picture: periodical 'Tunnel’, Bauverlag BV GmbH) © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com 3 HA L F E N C A S T - IN CHA NNE LS F O R T U NN EL CON STR U CTION A v a i l a b l e i n l e n g t h s f r o m 6 " t o 19 ' 11 " Designation HTA HM 1.4529 HCR HL HZL toothed 2-1/16" 1-5/16" 2" 1-3/16" 1-15/16" 1-3/16" 1-9/16" Material / finish 1.4571 A4 hot-dipgalvan. Allowable single point lbs (kN) pull, concrete grade B ≥ 25 available Halfen T-head bolts M 6 M 8 M 10 M 12 M 16 M 20 (1/4") (5/16") (3/8") (1/2") (5/8") (3/4") gv fv gv fv gv fv gv fv A4 A4 A4 gv fv gv fv gv fv A4 A4 A4 gv fv gv fv gv fv HTA 52/34 4950 (22) HM 52/34 → see catalogue MT HTA 50/30 2250 (10) HM 50/30 → see catalogue MT HTA 49/30 2250 (10) HM 49/30 → see catalogue MT HTA 40/22 1350 (6) gv gv fv gv fv HM 40/22 → see catalogue MT A4 A4 A4 HTA 40/25 1350 (6) gv gv fv gv fv HM 40/25 A4 A4 A4 → see catalogue MT HTA 38/17 1000 (4.5) gv fv gv fv gv fv HM 38/17 → see catalogue MT HTA 28/15 675 (3) HM 28/15 → see catalogue MT HL 28/15 → see catalogue MT HM 41/41 → see catalogue MT HL 41/41 → see catalogue MT HZL 41/41 → see catalogue MT HM 36/36 → see catalogue MT HL 36/36 → see catalogue MT HM 28/28 → see catalogue MT HL 28/28 → see catalogue MT gv fv gv fv A4 A4 A4 HCR HCR HCR 7/8" 1-9/16" 1" 1-1/2" 5/8" 1-1/8" 9/16" 1-5/8" 1-5/8" 1-3/8" 1-3/8" 1-1/16" 1-1/8" 4 A4 A4 A4 HCR HCR HCR gv gv gv fv gv A4 A4 HCR HCR gv fv fv A4 A4 gv fv gv fv gv fv A4 A4 A4 gv gv fv gv A4 A4 © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com R oad Tunnels Mounting lighting systems Special, glare-free lights are usually mounted on the tunnel ceiling at relatively short distances to provide the optimum lighting for road tunnels. Since HALFEN channels embedded in concrete are particularly suitable for strip mountings, they are offten used by experienced planners for these applications. Because the mountings could be exposed to chloride contamination, they are often made from stainless steel CorrosionResistance Class IV in accordance with the German Construction supervision approval No. 30.3-6. The material numbers of the highly corrosion resistant steels are specified as 1.4529 and 1.4547. The HALFEN channels which are made from these materials and can be embedded in concrete are labelled: HTA 28/15-HCR, HTA 38/17-HCR, HTA 49/30-HCR. Halfen cast-in channels provide an adjustable mounting method for lighting systems © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com 5 R OA D T U N N E LS Reinforcement connections A tunnel is a complex structure consisting of numerous sections with a large number of concrete construction joints. For example, if the diaphragm walls to which the tunnel sofit or tunnel vault is attached are pre-concreted, reinforcement connections are used for the linkage to the structural components. Later connection of the tunnel vault to the pre-concreted diaphragm walls Type HBS-05 HALFEN screw connections are used in this case. Connections from #4 to #10 (12 mm to 32 mm) bar diameter are available. Reinforced concrete wall HBS-05-A The load-bearing connection for the reinforcement is made using HBS-05 screw connections HBS-05-SG Reinforced concrete ceiling Reinforcement connections are also used in road tunnels for later connection to steel reinforced concrete intermediate ceilings. HBT rebend connections are used for the structural connection of concrete components without static proof. These are available in bar diameters #3 and #4 (10 mm and 12 mm). 6 © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com R OA D TU N N E LS Retrieval anchors Retrieval anchors are provided in road tunnels to pull apart vehicles which are wedged together in road traffic accidents so that they can be rapidly removed from the traffic. Retrieval anchors consist of DEHA spherical head anchors (Load class 20 T, 16 tons) embedded in the concrete. The free-swivelling shackles normally used for transporting precast concrete components are attached to the spherical head anchors. The shackles are secured with a chain to prevent them from being stolen. Retrieval anchors are placed in niches in the tunnel walls every 300 ft. City and municipal rescue services are increasingly demanding that retrieval anchors are provided. Retrieval anchors are concreted into the tunnel wall at regular intervals. Further detailed information is included in the technical brochure for Spherical Head Transport Anchors. Please download catalogue KKT at www.halfen.com. The anchors must not project into the tunnel space. They are stowed in niches. The chain secures the anchor from being stolen. Spherical head anchor with shackle. © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com 7 R A I L W A Y T U NNE LS Mounting contact wires, wheel tensioners, return lines and line feeders In railway tunnels for electrified stretches of railway lines, a large amount of equipment has to be installed along the tunnel cross section. This includes the contact-wire tensioners, line feeders and signal systems. HALFEN channels embedded in the concrete (cast-in channels) have proved to be an effective way of mounting equipment in numerous tunnels across the world and have become a standard means of attachment. Contact wire equipment adjustably mounted on the HTA Halfen channels. Anchor channel for supplementary conduit Anchor channel Anchor channel for for back conduit wheel tensioner Anchor channel for anchoring a fixed point Anchor channel for support strut Anchor channel for weight guide 8 © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com R A I L WA Y TU N NE LS Earthing Type HTA hot-rolled HALFEN channels together with the relevant Type HS tee bolts are used in tunnels to attach the structural components for the overhead line (contact lines). The structures are made to take any stresses, such as those which can occur on the Cologne Rhine/Main or NurembergIngolstadt high-speed lines. If desired, the HALFEN channels can be made short-circuit proof and adapted at site to the intended earthing arrangements. If installed as a channel pair, the short-circuit current is conducted via two welded spacers. The earth connection to the respective ring earth electrode can then be made from an earthing strap welded to the back of the channel. The channel pair is fixed to the bottom of the formwork and then the multi-layer reinforcement mesh can be installed. For this assembly method, the earthing strap (flat steel) is vertically aligned so that in the final assembly condition the strap is always accessible and can be connected easily to the ring earth electrode. Pair of Halfen channels with distance spacers and earthing strap, which is bent and welded to the upper reinforcement after it has been laid. © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com Halfen cast-in channels mounted on segment formwork 9 R OA D TU N N E Ls Pipe suppor t for ventilation ducts The connecting passages between two parallel main tunnel tubes are subject to strong contamination due to the irregular airpressure and suction waves from the main tunnels. The technical equipment housed in the tunnels must therefore be inspected and cleaned at short intervals. In the Swiss Seelisberg tunnel, this problem was solved by connecting the crossways, which are spaced approximately 1000ft apart, to the outside air with new ducting and ventilating them under slight positive pressure. The overpressure prevents contaminated air from entering the crossways. Since it was necessary for the ventilation ducts to run via the carriageway of the road tunnel, it was particularly important for the ducting to be installed quickly. The HALFEN Powerclick framing system was the best solution for providing a means of support for the ducting which would be fast, safe and adjustable. By using this system, interruptions to the traffic could be reduced to a minimum. Pipe support with HALFEN Powerclick framing system Photos: Tis-Air (www.tis-air.ch) Further information on the HALFEN Powerclick framing system is provided in the technical catalogues and on the website www.halfen.com. High rigidity profile with toothed inner channel Multi-functional angle connector Toothed connection HALFEN Powerclick framing system 10 © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com P R O D U C TS I N APPLICA TIO N: TUNNEL CON STR U CTION Some reference projects worldwide Germany XFEL X-Ray Laser Project, Hamburg Finnetunnel, Highspeed RL Tunnel river Elbe, 4th tube S-Railway tunnel Hamburg Herren tunnel Lübeck Service tunnel hospital Eppendorf Road tunnel Hemelingen Katzenberg tunnel U 2 city railway Pragsattel B10 Stuttgart Hornberg tunnel Neu-Ulm 21 Stuttgart 21 Schwarzkopf tunnel Tunnel Hösbach Audi tunnel, Ingolstadt Tunnel Geisberg Tunnel motorway junction Frankfurt Wandersmann tunnel north & south Tunnel Breckenheim Tunnel Idstein Tunnel Montabaur S-Railway Ostentor/Dortmund Bypass Gevelsberg road tunnel City railway Bochum City railway Dortmund Tunnel A2 Gelsenkirchen-Erle Lange Issel tunnel Troisdorf tunnel, Highspeed RL Siegauen tunnel, Highspeed RL Dickheck tunnel, Highspeed RL Wahnscheid tunnel, Highspeed RL Himmelberg tunnel, Highspeed RL Rottbitze tunnel, Highspeed RL Aegidienberg tunnel, Highspeed RL Ittenbach tunnel, Highspeed RL Günterscheid tunnel Subway 3 Nuremberg Subway Fürth Tunnel Lehrter train station, Berlin Tramway tunnel station Rostock Motorway tunnel BAB 113 Ems tunnel / Leer Subway Düsseldorf Tunnel Farchant A95 Tunnel Allach Subway Munich Subway Hamburg Bibratunnel, Highspeed RL Reitersbergtunnel, Highspeed RL Richard-Strauss Road Tunnel, Munich Luise-Kiesselbach Road Tunnel, Munich © 2010 HALFEN · AW-TUN 10 - US · www.halfen.com Belgium/Luxembourg Diabolotunnel Liefkenshoektunnel Tunnel Antwerpen ASDAM-HAST Tunnel Zelzate-Knokke Subway Antwerpen Tunnel de Cointe Liège Tunnel E5/E9 Liège Metro Antwerp Metro Bruxelles Cointe tunnel Tunnel Gestel Rolo tunnel CEE tunnel, Bruxelles Kennedy tunnel, Antwerp Metro Charleroi Tunnel de Gousselerbierg/Luxemburg Tunnel de Markusbierg/Luxemburg Tunnel Howald Italy Variante di valcio autostrada FI-BO Variante di valcio autostrada FI-BO Tunnel for Caselle Airport Tunnel Monte Bianco Switzerland Tunnel de Sauges, A5, Neuchatel Conn. tunnel Bettmerhorn-Fischeralp Quarten tunnel A3 Eggflue tunnel J18 Utlisberg tunnel A4 Hauenstein tunnel Metro Alpine tunnel Rosenbergtunnel, St.Gallen Islisberg tunnel Hafnerberg tunnel Chienberg tunnel Seelisberg tunnel Lötschberg tunnel Gotthard base tunnel Netherlands Zeeburg tunnel, Amsterdam Sophia tunnel Tunnel Pannerdens Kanaal Geldersepoort Schiphol tunnel Heijnenoord tunnel Wijker tunnel Austria Tunnels Semmering Tunnels Kalus Phyrna Autobahn Plabutsch tunnel Karawanken tunnel, Carinthia Inntal tunnel Sausenstein tunnel Metro Vienna Czech Republic Tunnel Praha-Mrazovka Tunnel Jihlava / bypass road Motorway tunnel Prague Sweden Södra Länken, tunnel near Stockholm Railway Tunnel , Malmö Hallands Tunnel (Railway) Great Britain Channel Tunnel Tunnel A1, Hatfield France Metro Paris Metro Lille Eurotunnel, Calais Tunnel de Villejust Tunnel du Puymorens Tunnel de l’Epine Tunnel du Landy Tunnel de Tartaiguille Tunnel du Prado-Carenge Singapore Circle Line MRT South Korea Railway tunnel Seoul-Pusan Malaysia Kuala Lumpur Storm Water Management and Road Tunnel (SMART) Other Metro Cairo, Egypt Metro Taipei, Taiwan Storebelts tunnel, Denmark Tunnel route 5, Hongkong Junk Bay tunnel, Hongkong Wu Guang Highspeed RL, China 11 Contact H alfen Worldwide Phone: E-Mail: Web: Web: +1 800.323.6896 halfen@meadowburke.com www.halfenusa.com www.halfen.com Fax: +1 888.277.1695 Canada UCC Industries International (Distributor) Units 12 & 13 895 Sandy Beach Road Pickering Ontario L1W 3N7 Phone: E-Mail: Web: +1 905.831.7724 bhughes@ucci.ca www.ucci.ca Fax: +1 905.831.5872 Provinces of British Columbia and Alberta: Meadow-Burke Products 8521 F.M. 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