Long Span Bridges on Urban Area and Typical Damages due to Major Earthquakes
Event details
| Date | 08.06.2016 |
| Hour | 12:15 › 13:15 |
| Speaker | Prof. Ayaho Miyamoto, Professor Emeritus of Yamaguchi University, Japan |
| Location | |
| Category | Conferences - Seminars |
Bridge is a key structure on the road and train networks. There are many bridge types such as beam (girder), arch, truss, suspension and cable stayed. The most important issues on bridge design and construction are “load carrying capacity”, “durability(long life)” and “sustainability (environmental friendly)”. In Japan, we have constructed more than 700,000 existing bridges which are not only long span bridges but also short and medium span bridges. Many of them are constructed in urban area including coastal area, such as Tokyo, Osaka, Kobe, etc. In this lecture, I will introduce mainly not only how to design a beautiful and strong long span bridges in a urban coastal area but also what kind of construction procedures was applied actually to them in the bridge site.
On the other hand, because the urban areas are generally in a high possibility area both of the big earthquake and strong typhoon, we need to consider both natural disasters in design process of the long span bridges. Especially, the 1995 Kobe Great Earthquake was a typical “inland earthquake” with the impulsive vertical motion at the early stage of the earthquake. Then, some special damage modes were observed in some parts, such as column-cap beam connection, column-footing connection, etc. in the bridge system. This fact suggests that such impulsive vertical motion in the earthquake possibly induced the circumferential crack of RC piers and also induces serious damages in the bridge piers, bearings, etc.
In this lecture also will be focused into what kinds of typical damage modes under major earthquake were occurred in some parts of long span bridge systems, how to affect the impulsive vertical ground motion on the failure mechanism of them and how to establish an optimal seismic retrofit design in the future from various points of view.
Bio : His recent research activities are in the area of structural safety assessment on concrete bridges including bridge management system(BMS), and also establishment of optimal design concept for concrete structures under soft impact loads.
• 1975 - 1988: Research Associate at Kobe Univ., Japan.
• 1985: Received Dr. of Eng. degree from Kyoto Univ., Japan.
• 1988 - 1995: Associate Professor at Kobe Univ., Japan.
• 1995 - 2015: Professor at Yamaguchi Univ., Japan.
• 2015.4 - now: Professor Emeritus of Yamaguchi Univ., Japan.
• 2015.9-2016.3: Visiting Professor of Aalto Univ., Espoo, Finland.
• 2016.4-2016.9: Visiting Professor of EPFL, Lausanne.
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• 2001.3-:Director, The Practical Maintenance Engineering Institute, Yamaguchi Univ.
• 2008.1-:Director, The Research Center for Environmental Safety, Yamaguchi Univ.
• Japan Society of Civil Engineers(JSCE) member(Fellow).
• Japan Concrete Institute(JCI) member.
• Japan Society for Fuzzy Theory and Systems(SOFT) member.
• American Society of Civil Engineers(ASCE) member.
• American Concrete Institute(ACI) member.
• International Association for Bridge and Structural Engineering(IABSE) Fellow member.
• International Association for Bridge Maintenance and Safety(IABMAS) member
On the other hand, because the urban areas are generally in a high possibility area both of the big earthquake and strong typhoon, we need to consider both natural disasters in design process of the long span bridges. Especially, the 1995 Kobe Great Earthquake was a typical “inland earthquake” with the impulsive vertical motion at the early stage of the earthquake. Then, some special damage modes were observed in some parts, such as column-cap beam connection, column-footing connection, etc. in the bridge system. This fact suggests that such impulsive vertical motion in the earthquake possibly induced the circumferential crack of RC piers and also induces serious damages in the bridge piers, bearings, etc.
In this lecture also will be focused into what kinds of typical damage modes under major earthquake were occurred in some parts of long span bridge systems, how to affect the impulsive vertical ground motion on the failure mechanism of them and how to establish an optimal seismic retrofit design in the future from various points of view.
Bio : His recent research activities are in the area of structural safety assessment on concrete bridges including bridge management system(BMS), and also establishment of optimal design concept for concrete structures under soft impact loads.
• 1975 - 1988: Research Associate at Kobe Univ., Japan.
• 1985: Received Dr. of Eng. degree from Kyoto Univ., Japan.
• 1988 - 1995: Associate Professor at Kobe Univ., Japan.
• 1995 - 2015: Professor at Yamaguchi Univ., Japan.
• 2015.4 - now: Professor Emeritus of Yamaguchi Univ., Japan.
• 2015.9-2016.3: Visiting Professor of Aalto Univ., Espoo, Finland.
• 2016.4-2016.9: Visiting Professor of EPFL, Lausanne.
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• 2001.3-:Director, The Practical Maintenance Engineering Institute, Yamaguchi Univ.
• 2008.1-:Director, The Research Center for Environmental Safety, Yamaguchi Univ.
• Japan Society of Civil Engineers(JSCE) member(Fellow).
• Japan Concrete Institute(JCI) member.
• Japan Society for Fuzzy Theory and Systems(SOFT) member.
• American Society of Civil Engineers(ASCE) member.
• American Concrete Institute(ACI) member.
• International Association for Bridge and Structural Engineering(IABSE) Fellow member.
• International Association for Bridge Maintenance and Safety(IABMAS) member
Practical information
- General public
- Free
Organizer
- Prof. Dr Brice Lecampion & Prof. Dr Katrin Beyer
Contact
- Prof. Dr Eugen Brühwiler