Upgrading the Arlberg tunnel to current safety standards |
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| Affiliation: | 1. Dipartimento di Scienze della Terra, Sapienza - Università di Roma, P.le Aldo Moro 5, 00185, Roma, Italy;2. Istituto Italiano di Paleontologia Umana, Piazza R. Bonghi 2, 03012, Anagni, Frosinone, Italy;3. Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, Edifici Z, C/ de les Columnes s/n, Campus de la UAB, 08193 Cerdanyola del Vallès, Barcelona, Spain;4. Departamento de Ciencias de la Tierra, Área de Paleontología, Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain;5. Fundación ARAID, Zaragoza, Spain;6. Polo museale Sapienza, Sapienza – Università di Roma, P.le Aldo Moro 5, 00185, Roma, Italy;1. Department of Civil Engineering, National Institute of Technology, Uttarakhand 246174, India;2. Department of Civil Engineering, Indian Institute of Technology, Roorkee 247667, India;1. State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 3491 Baijin Road, Guiyang 550014, PR China;2. The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, 3491 Baijin Road, Guiyang 550014, PR China;1. MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People''s Republic of China;2. Advanced Combustion Laboratory, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People''s Republic of China;1. School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, PR China;2. College of Environment and Resources, Fuzhou University, Fuzhou 350116, PR China;3. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, PR China;4. School of Civil Engineering, Hefei University of Technology, Hefei 230009, PR China;5. Anhui''s International Joint Research Center on Hydrogen Safety, Hefei 230009, PR China;6. Anhui Electric Power Research Institute, Hefei 230601, PR China;1. School of Civil Engineering, Chongqing University, Chongqing 400045, PR China;2. College of Environment and Ecology, Chongqing University, Chongqing 400045, PR China;3. Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education (Chongqing University), Chongqing 400045, PR China;4. Joint International Research Laboratory of Green Buildings & Built Environments, Chongqing 400045, PR China |
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| Abstract: | Austrian road tunnels within the Trans-European Road Network (TERN) must fulfil the requirements of the Directive 2004/54/EC (European Commission, 2004) not later than April 2019. This regulation has to be applied to all tunnels in the TERN with a length of more than 500 m, whether they are in operation, under construction or at design stage, and aims at ensuring a minimum level of safety for road users. One of the main features of this directive is the requirement for providing an egress possibility to a safe environment every 500 m throughout the whole tunnel.The Arlberg road tunnel has a length of some 15.5 km and is in operation for more than 35 years. It is a single tube tunnel operated with bi-directional traffic, but carries a quite low traffic volume. Hence, the construction of a second tube is not really cost effective. Currently the tunnel is equipped with a transversal ventilation system with remotely controlled smoke extraction dampers providing smoke extraction every 100 m. The maximum distance between egress possibilities to a save environment is some 1500 m. Due to the high costs of a construction of a second tube or a parallel running escape gallery, a novel solution was found. The existing fresh air duct will be used as safe escape way between the existing egress possibilities. This solution has big impacts on the ventilation system and on the requirements for thermal structure protection of the new egress ways, i.e. the fresh air duct. In order to overcome this problem, massive changes in the ventilation design have to be performed, accompanied by the installation of a high-pressure water-mist system for structure protection. |
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| Keywords: | Road tunnel Upgrading Ventilation system High-pressure water-mist system FFFS TERN |
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