Page 576 - 水土保持手冊_10612

項 1 2 3 4 5 6 7 8
目 斷面 載重 計算式 單位重 力 力臂 力矩 應力計算
1 A-A 1 1 2 × 6.8 × 1.36 = 4.62 2.35 10.86 1.15 12.49
⁄
2 及 2 0.3 × 6.8 = 2.04 2.35 4.79 1.75 8.38
3 B-B 3 1 2 × 6.8 × 0.68 = 2.312 2.35 5.43 2.13 11.57
⁄
4 Σ 10.332 21.08 32.44
2
5 7 1 2 × 7.06 × 1.36 = 4.8 1.8 8.64 0.69 5.96 = 84.99 41.07 = 2.07
⁄
⁄

6 B-B 21.85 × 0.5195 11.35 0.24 2.72

7 21.85 × 0.8545 18.67 2.35 43.87 = 2.07 − 1.17 = 0.9 > 4 = 0.685

8 Σ Σ 41.07 Σ 84.99 合力作用點超出四分點須以鋼筋補強

9 A-A 4+5 1.2 × 4.4 = 5.28 2.35 12.41 2.20 27.30 = 139.14 60.91 = 2.28
⁄

10 6 1.42 × 0.3 = 0.43 1.8 0.77 3.69 2.84 4.0
工-3-18
7 1 2 × 8.26 × 1.6 = 6.61 1.8 11.89 0.53 6.30 = 2.28 − 2.0 = 0.28 < 6 = 0.67 .

⁄
11 29.90 × 0.5195 15.53 0.00 0.00 60.91 6 × 0.28

12 29.90 × 0.8545 25.55 2.75 70.26 =� 2 4.0 (1 ± 4.0 )
1

13 Σ Σ 60.91 Σ 139.14 = 21.62 & 8.83 < 25 .
2
2
⁄
⁄

14 C-C 5 1.42 × 1.2 2.35 4.00 0.71 2.84 6 6 × 16.88
15 6 1.42 × 0.3 = 1.42 1.8 0.77 0.71 0.55 f = 1 × ℎ 2 = 1 × 1.2 2
16 7 1/2 × 17.05 × 1.42 -12.11 0.47 -5.69 = 70.33 = 7.03 > 0.03
′
2
2
⁄
⁄

17 8 1/2 × 21.62 × 1.42 -15.35 0.95 -14.58 = 4.2
2
⁄
18 Σ Σ -22.69 Σ -16.88 須以鋼筋補強