Relation between Strong Ground Motions and Building Damage in KiK-net Mashiki and the Shimojin Areas during the 2016 Kumamoto Earthquake

We used the Green’s function summation method together with the randomly perturbed asperity sources to sum up broadband statistical Green’s functions of a moderate-size source and predict strong ground motions due to the expected M8.1 to 8.7 Nankai-Trough earthquakes along the southern coast of western Japan. We successfully simulated seismic intensity distributions similar to the past earthquakes and strong ground motions similar to the empirical attenuation relations of peak ground acceleration and velocity. Using these results, we predicted building damage by non-linear response analyses and find that at the regions close to the source, as well as regions with relatively thick, soft sediments such as the shoreline and alluvium valleys along the rivers, there is a possibility of severe damage regardless of the types of buildings. Moreover, the predicted damage ratios for buildings built before 1981 are much higher than those built after because of the significant code modifications in 1981. We also find that the damage ratio is highest for steel buildings, followed by wooden houses, and then reinforced concrete buildings.

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Synthetic building damage scenarios using empirical fragility functions: A case study of the 2016 Kumamoto earthquake

International Journal of Disaster Risk Reduction ◽

10.1016/j.ijdrr.2018.04.016 ◽

2018 ◽

Vol 31 ◽

pp. 76-84 ◽

Cited By ~ 6

Author(s):

Luis Moya ◽

Erick Mas ◽

Shunichi Koshimura ◽

Fumio Yamazaki

Keyword(s):

Building Damage ◽

Fragility Functions ◽

2016 Kumamoto Earthquake ◽

Damage Scenarios ◽

Kumamoto Earthquake ◽

The 2016 Kumamoto Earthquake

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Investigation of Damages in Immediate Vicinity of Co-Seismic Faults During the 2016 Kumamoto Earthquake

Journal of Disaster Research ◽

10.20965/jdr.2017.p0899 ◽

2017 ◽

Vol 12 (5) ◽

pp. 899-915 ◽

Cited By ~ 4

Author(s):

Shohei Naito ◽

Ken Xiansheng Hao ◽

Shigeki Senna ◽

Takuma Saeki ◽

Hiromitsu Nakamura ◽

...

Keyword(s):

Fault Zone ◽

Active Fault ◽

Strong Motion ◽

Site Amplification ◽

Building Damage ◽

2016 Kumamoto Earthquake ◽

Severe Damage ◽

Kumamoto Earthquake ◽

The 2016 Kumamoto Earthquake ◽

The Relationship

In the 2016 Kumamoto earthquake, the Futagawa fault zone and the Hinagu fault zone were active in some sections, causing severe damage in neighboring areas along the faults. We conducted a detailed investigation of the surface earthquake fault, building damage, and site amplification of shallow ground within about 1 km of the neighboring areas of the fault. The focus was mainly on Kawayou district, Minamiaso village and Miyazono district, Mashiki town, and locations that suffered particularly severe building damage. We explored the relationship between local strong motion and building damage caused in areas that were in the immediate vicinity of the active fault.

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