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ri' Z <br /> :c <br /> ,yf ' ® <br /> .5 Rock �`:�` ®8aeod on avalY <br /> Q e, Q ` ����� —Estimation 5 <br /> tx <br /> W Stiff soils ' ',r''' 4 ♦♦�` ,��♦ \♦ o <br /> oo <br /> J � ♦ <br /> Q e' <C �� ♦® �S <br /> 0,3 i t-- 0.4 ♦� 4f ♦♦ <br /> t4 `♦♦ <br /> X a' Cr <br /> < 0.2 <br /> M <br /> Deep coheslonless soils w0.2 <br /> 9 r 4 ♦\ �� <br /> ° 0.1 , ♦♦ �e <br /> i <br /> 0 1 2 10 20 <br /> CLOSEST HORIZONTAL DISTANCE FROM ZONE <br /> 0 0.1 0.2 0,3 so 100 <br /> 0,4 0'S 0•0 0,7 OF ENERGY RELEASE (mi) <br /> Brock • MAXIMUM ACCELERATION ON ROCK, g Figure 10.22 Average values of maximum accelerations in rock. (From Seed <br /> Figure 10.20 Approximate values for ground acceleration, (From S 1982,Reproduced b <br /> Reproduced b Bed and Idriss, 1982, y Permission or Earthquakes Engineering Research Institute,) Idriss, <br /> y permission of Earthquake Engineering Research Institute,) <br /> 1000 <br /> 0.8 <br /> i M 8 1/4 <br /> 100 y!�/=!y M T 1/a <br /> z o j E ill; " <br /> o0.4s <br /> t;J Uj 1989 lofia Prleta � � 10 .^�•, <br /> ®' <br /> U 0.32�® i ,. <br /> 1•.' E <br /> W <br /> a W i;:,,•::. <br /> tJ i:.•.• •'rl; relationship r <br /> 0.2 :.,:.,•,. = Median r D ocommanded Q t M ® 8 1/� <br /> <>; r j;:M'1 for Ues in sm0klcal correlations J <br /> O <br /> LL <br /> /0.1 <br /> loss maxieo city 0.t <br /> 00 <br /> 0,1 0 ........................... <br /> ( . <br /> 0.3 0,4 0.5 I <br /> ACCELERATION ON ROCK SITES, g 0,® J 0010 <br /> Figure 10.21 Variations of aecel,mlons on soh soil sites versus rock sites. (From Idriss, f o 2 0 a 0 8 <br /> o.e t,o <br /> 1.990.) ky/k max <br /> Figure 10.23 Variation or permanent displaccment with yield accelcration,(From Makdisi <br /> and Seed, 1977•) <br /> $41 <br />