Page 570 - 水土保持手冊_10612

庫倫土壓係數

(30° − 16.7°) 2
= 2

(30° + 20°) (30° − 15°)
2
(16.7) × (20° + 16.7°) �1 + � �
(20° + 16.7°) (15° − 16.7°)
(13.3°) 2
=
2
(50°) (15°)
2
(16.7°) × 36.7° �1 + � �
(36.7°) (−1.7°)
0.9471
=
2
0.7660 × 0.2588
0.9174 × 0.8018 × �1 + � �
0.8018 × 1

0.9471
= = 0.574
0.9174 × 0.8018 × 2.242
1
=
2

2
1
2
= × 0.574 × 1.8 × 6.26 = 20.24/
2
= 20.24 × 0.598 = 12.10/

= 20.24 × 0.802 = 16.23/

1
=
2

2
1
2
= × 0.574 × 1.8 × 5.26 = 14.29/
2
= 14.29 × 0.598 = 8.55/

= 14.29 × 0.802 = 11.46/

(三) 檢討：

1.A-A 斷面

(1)滑動安全因素：

‘
∑ ∮ +

=

∑

1 1 + ∮ 1 1 + 35°
2
′
∴ = ℎ = × 1.9 × 1.2 ×

2 1 − ∮ 2 1 − 35°
1 1 + 0.5736
= × 1.9 × 1.44 × = 5.05/
2 1 − 0.5736

工-3-12