2016熊本地震：前震-本震に ... - saitama-u.ac.jp

1 2016 - - - 2016 5 6 (5/9 ) 28 4 14 21 26 16 1 25 11km 12km 7 2 KiK-Net KMMH16 1 - 2 2 Damage Index 1s Damage Index 2 Clough 1 5% T ky

2 1 - 2 Park and Ang[1] Damage Index yu 4= 4 = 0 100 200 300 400 500 600 (s) (April 14)Mainshock(April 16)Foreshock(April 14)-Mainshock(April 16) Unit: gal 1 KiK-Net KMMH16 (a) 1s (b) 1 (b) 1 1s 1 1 (c)

3 1s 1s 1s (s)Yield Strength Coefficient ky (Py/W) (s)Yield Strength Coefficient ky (Py/W) (a) (4/14) (b) (4/16) (s)Yield Strength Coefficient ky (Py/W) (c) (4/14) 4/16 2 -- -- -- -- -- -- -- -- -- Strength Coefficient ky (Py/W)Period (s) (a) (4/14) 4/16 4/14 2 (c) (a) - (s) -- -- -- -- -- -- -- Strength Coefficient ky (Py/W)Period (s) (b) (4/14) 4/16 4/14 (4/16) 2 (c) (a)(b) - (s) -- -- -- -- -- -- -- Strength Coefficient ky (Py/W)Period (s) (c) (4/14) 4/16 4/14 (4/16) 2 (c) (a)(b) - (s) 3 Damage Index - DI - (s)Yield Strength Coefficient ky (Py/W)

4 (s)Yield Strength Coefficient ky (Py/W) (a) (4/14) Damage Index (b) (4/16) Damage Index (s)Yield Strength Coefficient ky (Py/W) (c) (4/14) 4/16 Damage Index 4 Damage Index -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Strength Coefficient ky (Py/W)Period (s) (a) (4/14) 4/16 4/14 2 (c) (a) - (s) -- -- -- -- -- -- -- Strength Coefficient ky (Py/W)Period (s) (b) (4/14) 4/16 4/14 (4/16) 2 (c) (a)(b) - (s) -- -- -- -- -- -- -- Strength Coefficient ky (Py/W)Period (s) (c) (4/14) 4/16 4/14 (4/16) 2 (c) (a)(b) - (s) 3 1 [1] Park , Ang , Mechanistic Seismic Damage Model for Reinforced Concrete, ASCE Journal of Structural Engineering, , , , NIED KiK-NET