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TOP ＞ English
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Welcome to the Tunnel Research Team website.
Our team conducts various researches and technical development focused
on the methods of design, construction, and maintenance concerning to the
structure of road tunnels.
Our team also targets at the researches and development on the facilities
and systems of ventilation, lighting and emergency operation in road tunnnels.
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Research Projects |
- Construction and design methods of mountain tunnel
Our team conducts numerical analyses, model experiments, and field measurements for the purpose of evaluating the underground loading conditions and the performance of the tunnel structure.
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| Full-scale loading test for tunnel lining |
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An example of test results（Final stage） |
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- Construction and design methods of urban tunnel
Our team conducts numerical analyses, model experiments, and field measurements
for the purpose of developing the methods of design, construction, and maintenance
with respect to the shield tunnels.
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- Seismic properties of the mountain tunnel
This research project is related to :
＞Clarification of the uncertainties of tunnel mechanical behavior during
earthquake.
＞Researching and developing the effective solutions against seismic damages
to mountain tunnel.
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| The earthquake damage |
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Ground Vibration |
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- Maintenance of aged tunnel
This research project is related to :
＞Evaluation of the performance of the old tunnel structure using soundness
properties.
＞Repairing, retrofitting, and reinforcing the performance of aged tunnel
structures.
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- Research and development of the systems of ventilation, lighting, and emergency operation in road tunnel
This Research project is related to:
＞Researching and developing the efficient and economical ventilation, lighting systems.
＞Reseaching and developing the safe and effective emergency operation systems.
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| Full-scale loading test for tunnel lining |
| Our team carries out full-scale loading test for full-scale tunnel linings.The
diameter of the model is 9.7m. We study the behavior of tunnel lining considering
its thickness, its material properties, and the loading conditions. |
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Current issue
The number of road tunnel construction has been increasing recently owing
to the development of road transportation network. In addition, the cross
sections of newly constructed tunnels have been becoming larger with the
purpose of safe and comfortable driving. Accordingly, the cost of tunnel
construction tends to get higher, and its reduction is required. Furthermore, the importance of the tunnel durability becomes higher from
the needs of the efficient maintenance purpose for the quite large number
of tunnels, such as preventing falling concrete debris from tunnel structures.
Corresponding to these requirements, more rational solutions for design,
construction, and maintenance of tunnel structure are required.
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| Full-scale loading test for tunnel lining |
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Public Works Research Institute
Road Technology Research Group
Tunnel Research Team
1-6 Minamihara, Tsukuba, Ibaraki 305-8516, JAPAN
Tel. +81-29-879-6791 Fax. +81-29-879-6796
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| Copyright © Public Works Research Institute |