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TOP ＞ English
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The Tunnel Research Team conducts studies on research, design, construction and maintenance of
tunnel. It also conducts studies on design and operation of facilities
such as air ventilation, lightning and disaster prevention in tunnel.
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Major research themes |
- Construction and deign method of mountain tunnel
Through numerical analysis, model experiment and field measurement, research studies on the evaluation of load on tunnel and on the design method of supporting and lining structure with new material are conducted.
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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 deign method of urban tunnel
Research on the design of shield tunnel constructed in the hard ground is conducted, through numerical analysis, model experiment and field measurement.
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- Aseismic measurement of mountain tunnel
Research is conducted in order to bring out the damage mechanism of mountain tunnel in the earthquake and to establish the condition of tunnel necessary to aseismic measurement and the effective aseismic measurement.
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| The earthquake damage |
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Ground Vibration |
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- Maintenance and improvement of aging tunnel
Research studies on the estimation of soundness and the repair and improvement method of aging tunnel are conducted.
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- Deign of facilities to increase safety and comfort when driving through tunnel
Research study on the design method of economical air ventilation in tunnel is conducted.
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Full-scale loading test for tunnel lining |
| The tunnel team carries out full-scale loading test for tunnel lining.
The diameter of this model is 9.7m. We study the behavior of tunnel lining
considering its thick, material and effect of loads. The data, such as
the relevance between displacement and load, the strain, the section force
and the occurrence of crack, were gathered in this test. |
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Subject of the method of designing tunnel lining
The number of road tunnel construction has
been increasing recently due to the development of road traffic and the section
of tunnel becomes larger in purpose of aiming at safety and comfortableness in
traffic. Therefore, the cost of tunnel construction tend to get higher, and its
reduction is the subject which should be solved immediately. Moreover, in
relation to falling concrete debris from tunnel structure, the improvement of
the tunnel durability is needed. As a solution method for these problems, the
construction of tunnel, which is mechanically rational and economical, is
needed considering the characteristic of the ground.
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| Full-scale loading test for tunnel lining |
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Incorporated Administrative Agency 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 (C) 2008 Public Works Research Institute |