Chapter
Apr 26, 2012
Safety Influenced by Combined Action of Sulphate and Chloride to Shallow Highway Tunnel
Publication: Deep and Underground Excavations
Abstract
This study, using GeoFBA, generates a load-structure method tensile-compressional model for analyzing and calculating the tunnel that is 10m deep embedded by rock n and is eroded by combined action of sulphate and chloride. The calculation indicates that first of all, the tunnel safety falls down gradually with the increase of circumferential crack width (the degree of corrosion of reinforcement) as well as longitudinal crack depth; furthermore, when lining suffers the same corrosion degree of reinforcement and the same depth of longitudinal crack, the problem occurs on the arch crown which would bring up bigger effect to the tunnel safety than that occurs in the haunch; In addition, the change of circumferential crack width, which is smaller than 0.2mm, would make less influence to the tunnel lining safety.
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© 2010 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Business management
- Chemical compounds
- Chemicals
- Chemistry
- Chloride
- Continuum mechanics
- Corrosion
- Cracking
- Deterioration
- Engineering mechanics
- Environmental engineering
- Fracture mechanics
- Geotechnical engineering
- Highway and road management
- Highway transportation
- Highways and roads
- Infrastructure
- Materials characterization
- Materials engineering
- Occupational safety
- Practice and Profession
- Public administration
- Public health and safety
- Safety
- Salts
- Solid mechanics
- Sulfates
- Transportation engineering
- Tunnels
Authors
Affiliations
Dept of Geotechnical Engineering, Tongji Univ, Shanghai, 200092, China and School of Naval Architecture and Ocean Engineering, Jiangsu Univ of Science and Technology, Zhenjiang, Jiangsu 212003, China.E-mail: [email protected]
Dept of Geotechnical Engineering, Tongji Univ, Shanghai, 200092, China.E-mail: [email protected]
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