Chapter
Dec 27, 2013
Failure Mechanism of Tunnel Portal during Strong Earthquakes
Authors: X. Zhao [email protected], T. B. Li, L. J. Tao [email protected], S. Hou, L. Y. Li, and W. G. QiuAuthor Affiliations
Publication: International Efforts in Lifeline Earthquake Engineering
Abstract
Tunnel portal section is one of the most easily damaged parts in a mountain tunnel during a strong earthquake. Tunnel opening is the only part exposed outside the surrounding rock. Failures of this part may block roads, which greatly influences the transportation of the local area. Examples studied in this paper focus on failures on tunnel portals. Damage types are categorized. According to these damage types, influencing factors and mechanism of these damages are analyzed including thickness of cover layers, interfaces and discontinuities, and construction methods. Suggestions of seismic resistance and reduction methods are proposed regarding these influencing factors.
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Information
Published In
International Efforts in Lifeline Earthquake Engineering
Pages: 314 - 320
Copyright
© 2014 American Society of Civil Engineers.
History
Published online: Dec 27, 2013
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ASCE Technical Topics:
- Analysis (by type)
- Construction engineering
- Construction methods
- Earthquakes
- Engineering fundamentals
- Failure analysis
- Geohazards
- Geology
- Geomorphology
- Geotechnical engineering
- Highway and road management
- Highway transportation
- Highways and roads
- Infrastructure
- Material mechanics
- Material properties
- Materials engineering
- Mountains
- Rocks
- Thickness
- Transportation engineering
- Tunnels
Authors
Affiliations
Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Post Code 100124, Beijing; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Dongsan Rd. 1, Chenghua District, Chengdu City, China. E-mail: [email protected]
T. B. Li
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Dongsan Rd. 1, Chenghua District, Chengdu City, China
Institute for Geotechnical Engineering and Underground Construction, Beijing University of Technology, Post Code 100124, Beijing, China. E-mail: [email protected]
S. Hou
Institute for Geotechnical Engineering and Underground Construction, Beijing University of Technology, Post Code 100124, Beijing, China
L. Y. Li
Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Post Code 100124, Beijing, China
W. G. Qiu
Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
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