平成 28 年度 海洋・港湾構造物設計士資格認定試験 …

1 28 DEMPHIS CDIT DEMPHIS ( 28 SCOPE 28 4 ) ( ) ( ) ( ) ( )

2 2 1 79 88 79 88 79 88 88 88

3 88 4 88 SHAKE P346 S SHAKE 94 351 113 The following figure shows the stress condition and the Mohr s stress circle in the active earth pressure condition of the ground in Rankine s theory.

4 Select the most appropriate combination of A, B and C. A B C h v 42 h v 4 2 h v 2 v h 42 v h 2 : normal stress : shear stress v: vertical stress h: horizontal stress : angle of internal friction c: cohesion =c+tanABhvhvCfailure surface c N 100m 6 ( ) ( ) ( )

5 300m 500m 100m wn = 100% wL = 102% e = t = g/cm3 Cc = 7 Wn=WL=100 e=2 3 t= Cc= t= Wn=100% e= s= t t= m/V = = 8 ( ) ( ) ( )

6 2 9 ( ) ( ) ( ) 2008 8 42 How much additional time for consolidation is required for a clay deposit with a 16-m thickness (Deposit A) than for a clay deposit with an 8-m thickness (Deposit B)?

7 Assume that these two deposits have the same coefficient of consolidation and drainage condition. The required time for consolidation for Deposit A is 2 times longer than that for Deposit B. The required time for consolidation for Deposit A is 4 times longer than that for Deposit B. The required time for consolidation for Deposit A is 8 times longer than that for Deposit B. The required time for consolidation for Deposit A is 16 times longer than that for Deposit B. The required time for consolidation for Deposit A is the same as that for Deposit B. 10 16m A 8m B v 2 v 16m2 8m2 4 A B 4

8 11 ( ) 100 ( ) ( ) quf ufq quck 100/1 VKqqkucuf K V ufq 12

9 100 703 13 ( ) ( ) ( ) Dead Weight Tonnage 100,000 DWT 10m~12m Displacement Tonnage 10 15 cm/s 14 100,000 DWT 140,000 DWT 165,000 DWT 100.

10 000 DWT 10m 12m DWT GT 396 10 15cm/s 2 M k 2 1 2 k M 1/4 k 1/4 M 4 k 1/4 M k 2 M 1/4 k 2 M 15 1 / / / 4 2 2 / / 1/ / / /