TUTResearch Feature Story (No.8, Feb 2017)

1.Seismic safety of high-rise buildings against long period ground motions

Figure 1. Long period ground motion generated by Nankai Trough Earthquake

Nankai Trough Earthquake with magnitude 9 likely to occur by the middle of the 21st century. It could lead to serious damage to important structures in urban cities. In particular, the structures with long natural period such as base isolation buildings, high-rise buildings, long-span bridges and oil tanks have the property of resonance by long-period ground motions.

Therefore, this research aims to develop the technology to improve seismic performance of high-rise buildings against long-period ground motions.

2.Experiment and analysis of earthquake and tsunami safety of buildings

Figure 2. Development of earthquake response analysis program STERA3D

There is a need to improve earthquake resistance of buildings to prepare for the future Nankai Trough Earthquake with magnitude 9.

This research conducts monitoring and strong motion observation of buildings to clarify the actual phenomena. Also based on precise seismic response analysis method, safety and function of buildings to the massive earthquake and tsunami are quantified.

3.Promotion of international cooperation for earthquake disaster mitigation

Photo 1. Research cooperation in Romania (2002)

Photo 2. International Conference in China (2008)

Earthquake disaster mitigation is a global challenge. Japan must take the leadership and work together with other countries. We will promote technical cooperation and organize international conferences for this purpose.

4.Health monitoring method of reinforced concrete piles

Photo 3. Research cooperation in Romania

This research focus specifically on soil-foundation interaction and health monitoring of reinforced concrete piles. We will do a big shaking table test and centrifuge tests.

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