P quake
P quake
P quake
P quake q dead
q dead
q dead
q dead
8 m 8 m
8 m 4 m
4 m
4 m
4 m
3.5.2.3 Portal B akibat kombinasi pembebanan 3
Yang dimaksud dengan kombinasi pembebanan 3 sesuai peraturan AISC 1989 adalah :
1,3 D+E
Gambar 3.96 Portal B dalam kombinasi pembebanan 3
Keterangan : Besar q dead yang bekerja : 1,876 Tm
Besar P quake Lt. 1 : 3,1178 T
Besar P quake Lt. 2 : 6,2356 T
Besar P quake Lt. 3 : 9,3534 T
Besar P quake Lt. 4 : 8,2449 T
Universitas Sumatera Utara
Mekanisme yang terjadi akibat pembebanan seperti gambar 3.96 di atas adalah sebagai berikut :
1. Mekanisme balok Lt.4 Atap
Gambar 3.97 Mekanisme balok Lt.4 – Portal B3
Kerja Dalam = 4 x Mp .
θ = 4 Mp
θ
Kerja Luar =
λ x q dead x ½.8m x 4m.θ = 1,3 x 1,876 Tm x 4m x 4m.
θ = 39,028 T-m
θ Kerja Dalam = Kerja Luar
4 Mp θ = 39,028 T-m θ
Mp = 9,7552 T-m
Mp Mp
Mp Mp
Universitas Sumatera Utara
2. Mekanisme balok Lt.3
Gambar 3.98 Mekanisme balok Lt.3 – Portal B3
Kerja Dalam = 4 x Mp .
θ = 4 Mp
θ
Kerja Luar =
λ x q dead x ½.8m x 4m.θ = 1,3 x 1,876 Tm x 4m x 4m.
θ = 39,028 T-m
θ Kerja Dalam = Kerja Luar
4 Mp θ = 39,028 T-m θ
Mp = 9,7552 T-m
Mp Mp
Mp Mp
Universitas Sumatera Utara
3. Kombinasi : Mekanisme Balok Lt.4
Mekanisme Balok Lt.3
Gambar 3.99 Mekanisme Kombinasi 1 – Portal B3
Kerja Dalam = 8 x Mp .
θ = 8 Mp
θ
Kerja Luar = 2 x
λ x q dead x ½.8m x 4m.θ = 2 x 1,3 x 1,876 Tm x 4m x 4m.
θ = 78,0416 T-m
θ Kerja Dalam = Kerja Luar
8 Mp θ = 78,0416 T-m θ
Mp = 9,7552 T-m
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
4. Sway Mechanism Lt.4 a
Gambar 3.100 Sway Mechanism Lt.4 a – Portal B3
Kerja Dalam = 8 x 1,2Mp .
θ = 9,6 Mp
θ
Kerja Luar =
λ x P quake Lt.4 x 4m.θ = 1,3 x 8,2449T x 4m.
θ = 42,8737 T-m
θ Kerja Dalam = Kerja Luar
9,6 Mp θ = 42,8737 T-m θ
Mp = 4,4660 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Universitas Sumatera Utara
5. Sway Mechanism Lt.3 a
Gambar 3.101 Sway Mechanism Lt.3 a – Portal B3
Kerja Dalam = 8 x 1,2Mp .
θ = 9,6 Mp
θ
Kerja Luar =
λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 4m.θ = 1,3 x 9,3534T x 4m.
θ + 1,3 x 8,2449T x 4m.θ = 91,5115 T-m
θ Kerja Dalam = Kerja Luar
9,6 Mp θ = 91,5115 T-m θ
Mp = 9,5324 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Universitas Sumatera Utara
6. Sway Mechanism Lt.2 a
Gambar 3.102 Sway Mechanism Lt.2 a – Portal B3
Kerja Dalam = 8 x 1,2Mp .
θ = 9,6 Mp
θ
Kerja Luar =
λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 4m.θ
= 1,3 x 6,2356T x 4m. θ + 1,3 x 9,3534T x 4m.θ + 1,3 x 8,2449T x 4m.θ
= 123,9567 T-m θ
Kerja Dalam = Kerja Luar 9,6 Mp
θ = 123,9567 T-m θ
Mp = 12,9100 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Universitas Sumatera Utara
7. Sway Mechanism Lt.1 a
Gambar 3.103 Sway Mechanism Lt.2 a – Portal B3
Kerja Dalam = 8 x 1,2Mp .
θ = 9,6 Mp
θ
Kerja Luar =
λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 4m.θ
= 1,3 x 3,1178T x 4m. θ + 1,3 x 6,2356T x 4m.θ + 1,3 x 9,3534T x 4m.θ
+ 1,3 x 8,2449T x 4m. θ
= 140,1492 T-m θ
Kerja Dalam = Kerja Luar 9,6 Mp
θ = 140,1492 T-m θ
Mp = 14,5989 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Universitas Sumatera Utara
8. Sway Mechanism Lt.4 b
Gambar 3.104 Sway Mechanism Lt.4 b – Portal B3
Kerja Dalam = 6 x Mp .
θ + 4 x 1,2Mp . θ = 10,8 Mp
θ
Kerja Luar =
λ x P quake Lt.4 x 4m.θ = 1,3 x 8,2449T x 4m.
θ = 42,8737 T-m
θ Kerja Dalam = Kerja Luar
10,8 Mp θ = 42,8737 T-m θ
Mp = 3,9698 T-m
1,2Mp 1,2Mp
Mp Mp
Mp 1,2Mp
Mp Mp
1,2Mp Mp
Universitas Sumatera Utara
9. Sway Mechanism Lt.3 b
Gambar 3.105 Sway Mechanism Lt.3 b – Portal B3
Kerja Dalam = 6 x Mp .
θ + 4 x 1,2Mp . θ = 10,8 Mp
θ
Kerja Luar =
λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 4m.θ = 1,3 x 9,3534T x 4m.
θ + 1,3 x 8,2449T x 4m.θ = 91,5115 T-m
θ Kerja Dalam = Kerja Luar
10,8 Mp θ = 91,5115 T-m θ
Mp = 8,4733 T-m
1,2Mp 1,2Mp
Mp Mp
Mp 1,2Mp
Mp Mp
1,2Mp Mp
Universitas Sumatera Utara
10. Sway Mechanism Lt.2 b
Gambar 3.106 Sway Mechanism Lt.2 b – Portal B3
Kerja Dalam = 6 x Mp .
θ + 4 x 1,2Mp . θ = 10,8 Mp
θ
Kerja Luar =
λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 4m.θ
= 1,3 x 6,2356T x 4m. θ + 1,3 x 9,3534T x 4m.θ + 1,3 x 8,2449T x 4m.θ
= 123,9567 T-m θ
Kerja Dalam = Kerja Luar 10,8 Mp
θ = 123,9567 T-m θ
Mp = 11,4756 T-m
1,2Mp 1,2Mp
Mp Mp
Mp 1,2Mp
Mp Mp
1,2Mp Mp
Universitas Sumatera Utara
11. Sway Mechanism Lt.1 b
Gambar 3.107 Sway Mechanism Lt.1 b – Portal B3
Kerja Dalam = 6 x Mp .
θ + 4 x 1,2Mp . θ = 10,8 Mp
θ
Kerja Luar =
λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 4m.θ
= 1,3 x 3,1178T x 4m. θ + 1,3 x 6,2356T x 4m.θ + 1,3 x 9,3534T x 4m.θ
+ 1,3 x 8,2449T x 4m. θ
= 140,1492 T-m θ
Kerja Dalam = Kerja Luar 10,8 Mp
θ = 140,1492 T-m θ
Mp = 12,9768 T-m
1,2Mp 1,2Mp
Mp Mp
Mp 1,2Mp
Mp Mp
1,2Mp Mp
Universitas Sumatera Utara
12. Kombinasi : Sway Mechanism Lt.4
Sway Mechanism Lt.3
Gambar 3.108 Mekanisme Kombinasi 2 – Portal B3
Kerja Dalam = 6 x Mp .
θ + 8 x 1,2Mp . θ = 15,6 Mp
θ
Kerja Luar =
λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 8m.θ = 1,3 x 9,3534T x 4m.
θ + 1,3 x 8,2449T x 8m.θ = 134,3852 T-m
θ Kerja Dalam = Kerja Luar
15,6 Mp θ = 134,3852 T-m θ
Mp = 8,6144 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
13. Kombinasi : Sway Mechanism Lt.3
Sway Mechanism Lt.2
Gambar 3.109 Mekanisme Kombinasi 3 – Portal B3
Kerja Dalam = 6 x Mp .
θ + 8 x 1,2Mp . θ = 15,6 Mp
θ
Kerja Luar =
λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 8m.θ + λ x P quake Lt.4 x 8m.θ
= 1,3 x 6,2356T x 4m. θ + 1,3 x 9,3534T x 8m.θ + 1,3 x 8,2449T x 8m.θ
= 215,4481 T-m θ
Kerja Dalam = Kerja Luar 15,6 Mp
θ = 215,4481 T-m θ
Mp = 13,8108 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
14. Kombinasi : Sway Mechanism Lt.2
Sway Mechanism Lt.1
Gambar 3.110 Mekanisme Kombinasi 4 – Portal B3
Kerja Dalam = 6 x Mp .
θ + 8 x 1,2Mp . θ = 15,6 Mp
θ
Kerja Luar =
λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 8m.θ + λ x P quake Lt.3 x 8m.θ + λ x P quake Lt.4 x 8m.θ
= 1,3 x 3,1178T x 4m. θ + 1,3 x 6,2356T x 8m.θ + 1,3 x 9,3534T x 8m.θ
+ 1,3 x 8,2449T x 8m. θ
= 264,0859 T-m θ
Kerja Dalam = Kerja Luar 15,6 Mp
θ = 264,0859 T-m θ
Mp = 16,9286 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
15. Kombinasi : Sway Mechanism Lt.4 , 3
2
Gambar 3.111 Mekanisme Kombinasi 5 – Portal B3
Kerja Dalam = 12 x Mp .
θ + 8 x 1,2Mp . θ = 21,6 Mp
θ
Kerja Luar =
λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 8m.θ + λ x P quake Lt.4 x 12m.θ
= 1,3 x 6,2356T x 4m. θ + 1,3 x 9,3534T x 8m.θ + 1,3 x 8,2449T x12m.θ
= 258,3219 T-m θ
Kerja Dalam = Kerja Luar 21,6 Mp
θ = 258,3219 T-m θ
Mp = 11,9593 T-m
1,2Mp 1,2Mp
Mp Mp
Mp Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
16. Kombinasi : Sway Mechanism Lt.3 , 2
1
Gambar 3.112 Mekanisme Kombinasi 6 – Portal B3
Kerja Dalam = 12 x Mp .
θ + 8 x 1,2Mp . θ = 21,6 Mp
θ
Kerja Luar =
λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 8m.θ + λ x P quake Lt.3 x 12m.θ + λ x P quake Lt.4 x 12m.θ
= 1,3 x 3,1178T x 4m. θ + 1,3 x 6,2356T x 8m.θ + 1,3 x 9,3534T x12m.θ
+ 1,3 x 8,2449T x 12m. θ
= 355,5974 T-m θ
Kerja Dalam = Kerja Luar 21,6 Mp
θ = 355,5974 T-m θ
Mp = 16,4628 T-m
1,2Mp 1,2Mp
Mp Mp
Mp Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
17. Kombinasi : Sway Mechanism Lt.4 , 3 , 2
1
Gambar 3.113 Mekanisme Kombinasi 7 – Portal B3
Kerja Dalam = 18 x Mp .
θ + 8 x 1,2Mp . θ = 27,6 Mp
θ
Kerja Luar =
λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 8m.θ + λ x P quake Lt.3 x 12m.θ + λ x P quake Lt.4 x 16m.θ
= 1,3 x 3,1178T x 4m. θ + 1,3 x 6,2356T x 8m.θ + 1,3 x 9,3534T x12m.θ
+ 1,3 x 8,2449T x 16m. θ
= 398,4711 T-m θ
Kerja Dalam = Kerja Luar 27,6 Mp
θ = 398,4711 T-m θ
Mp = 14,4374 T-m
1,2Mp 1,2Mp
Mp Mp
Mp Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
18. Kombinasi : Sway Mechanism Lt.4 , 3
Beam Mechanism Lt.3
Gambar 3.114 Mekanisme Kombinasi 8 – Portal B3
Kerja Dalam = 12 x Mp .
θ + 8 x 1,2Mp . θ = 21,6 Mp
θ
Kerja Luar = 3 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.3 x 4m.θ + λ x P quake Lt.4 x 8m.θ
= 3 x 1,3 x 1,876 Tm x 4m x 4m. θ + 1,3 x 9,3534T x 4m.θ + 1,3 x
8,2449T x 8m. θ
= 251,4476 T-m θ
Kerja Dalam = Kerja Luar 21,6 Mp
θ = 251,4476 T-m θ
Mp = 11,6411 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
19. Kombinasi : Sway Mechanism Lt.3 , 2
Beam Mechanism Lt.2
Gambar 3.115 Mekanisme Kombinasi 9 – Portal B3
Kerja Dalam = 12 x Mp .
θ + 8 x 1,2Mp . θ = 21,6 Mp
θ
Kerja Luar = 3 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 8m.θ + λ x P quake Lt.4 x 8m.θ
= 3 x 1,3 x 1,876 Tm x 4m x 4m. θ + 1,3 x 6,2356T x 4m.θ + 1,3 x
9,3534T x 8m. θ + 1,3 x 8,2449T x 8m.θ
= 332,5105 T-m θ
Kerja Dalam = Kerja Luar 21,6 Mp
θ = 332,5105 T-m θ
Mp = 15,3940 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
20. Kombinasi : Sway Mechanism Lt.2 , 1
Beam Mechanism Lt.1
Gambar 3.116 Mekanisme Kombinasi 10 – Portal B3
Kerja Dalam = 12 x Mp .
θ + 8 x 1,2Mp . θ = 21,6 Mp
θ
Kerja Luar = 3 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 8m.
θ + λ x P quake Lt.3 x 8m.θ + λ x P quake Lt.4 x 8m.
θ = 3 x 1,3 x 1,876 Tm x 4m x 4m.
θ + 1,3 x 3,1178T x 4m.θ + 1,3 x 6,2356T x 8m.
θ + 1,3 x 9,3534T x 8m.θ + 1,3 x 8,2449T x 8m.θ = 381,1483 T-m
θ Kerja Dalam = Kerja Luar
21,6 Mp θ = 381,1483 T-m θ
Mp = 17,6457 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
21. Kombinasi : Sway Mechanism Lt.4 , 3
Beam Mechanism Lt.4 , 3
Gambar 3.117 Mekanisme Kombinasi 11 – Portal B3
Kerja Dalam = 24 x Mp .
θ + 4 x 1,2Mp . θ = 28,8 Mp
θ
Kerja Luar = 6 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.3 x 8m.θ + λ x P quake Lt.4 x 8m.
θ = 6 x 1,3 x 1,876 Tm x 4m x 4m.
θ + 1,3 x 9,3534T x 4m.θ + 1,3 x 8,2449T x 8m.
θ = 368,5100 T-m
θ Kerja Dalam = Kerja Luar
28,8 Mp θ = 368,5100 T-m θ
Mp = 12,7955 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp
Universitas Sumatera Utara
22. Kombinasi : Sway Mechanism Lt.3 , 2
Beam Mechanism Lt.3 , 2
Gambar 3.118 Mekanisme Kombinasi 12 – Portal B3
Kerja Dalam = 24 x Mp .
θ + 8 x 1,2Mp . θ = 33,6 Mp
θ
Kerja Luar = 6 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 8m.
θ + λ x P quake Lt.4 x 8m.θ = 6 x 1,3 x 1,876 Tm x 4m x 4m.
θ + 1,3 x 6,2356T x 4m.θ + 1,3 x 9,3534T x 8m.
θ + 1,3 x 8,2449T x 8m.θ = 449,5729 T-m
θ Kerja Dalam = Kerja Luar
33,6 Mp θ = 449,5729 T-m θ
Mp = 13,3801 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
1,2Mp Mp
1,2Mp Mp
Mp Mp
Universitas Sumatera Utara
23. Kombinasi : Sway Mechanism Lt.2 , 1
Beam Mechanism Lt.2 , 1
Gambar 3.119 Mekanisme Kombinasi 13 – Portal B3
Kerja Dalam = 24 x Mp .
θ + 8 x 1,2Mp . θ = 33,6 Mp
θ
Kerja Luar = 6 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 8m.
θ + λ x P quake Lt.3 x 8m.θ + λ x P quake Lt.4 x 8m.
θ = 6 x 1,3 x 1,876 Tm x 4m x 4m.
θ + 1,3 x 3,1178T x 4m.θ + 1,3 x 6,2356T x 8m.
θ + 1,3 x 9,3534T x 8m.θ + 1,3 x 8,2449T x 8m.θ = 498,2107 T-m
θ Kerja Dalam = Kerja Luar
33,6 Mp θ = 498,2107 T-m θ
Mp = 14,8277 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
1,2Mp Mp
1,2Mp Mp
Mp Mp
Universitas Sumatera Utara
24. Kombinasi : Sway Mechanism Lt.4, 3, 2
Beam Mechanism Lt.4, 3, 2
Gambar 3.120 Mekanisme Kombinasi 14 – Portal B3
Kerja Dalam = 36 x Mp .
θ + 4 x 1,2Mp . θ = 40,8 Mp
θ
Kerja Luar = 9 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.2 x 4m.θ + λ x P quake Lt.3 x 8m.
θ + λ x P quake Lt.4 x 12m.θ = 9 x 1,3 x 1,876 Tm x 4m x 4m.
θ + 1,3 x 6.2356T x 4m.θ + 1,3 x 9,3534T x 8m.
θ + 1,3 x 8,2449T x 12m.θ = 609,5091 T-m
θ Kerja Dalam = Kerja Luar
40,8 Mp θ = 609,5091 T-m θ
Mp = 14,9389 T-m
1,2Mp 1,2Mp
1,2Mp Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Universitas Sumatera Utara
25. Kombinasi : Sway Mechanism Lt.3, 2, 1
Beam Mechanism Lt.3, 2, 1
Gambar 3.121 Mekanisme Kombinasi 15 – Portal B3
Kerja Dalam = 36 x Mp .
θ + 8 x 1,2Mp . θ = 45,6 Mp
θ
Kerja Luar = 9 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.1 x 4m.θ + λ x P quake Lt.2 x 8m.
θ + λ x P quake Lt.3 x 12m.θ + λ x P quake Lt.4 x 12m.
θ = 9 x 1,3 x 1,876 Tm x 4m x 4m.
θ + 1,3 x 3,1178T x4m.θ + 1,3 x 6.2356T x 8m.
θ + 1,3 x 9,3534T x 12m.θ + 1,3 x 8,2449T x 12m.θ = 706,7849 T-m
θ Kerja Dalam = Kerja Luar
45,6 Mp θ = 706,7849 T-m θ
Mp = 15,4997 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
Mp Mp
1,2Mp Mp
Mp Mp
Universitas Sumatera Utara
26. Kombinasi : Sway Mechanism Lt.4, 3, 2, 1
Beam Mechanism Lt.4, 3, 2, 1
Gambar 3.122 Mekanisme Kombinasi 16 – Portal B3
Kerja Dalam = 48 x Mp .
θ + 4 x 1,2Mp . θ = 52,8 Mp θ
Kerja Luar = 12 x
λ x q dead x ½.8m x 4m.θ + λ x P quake Lt.1 x 4m.θ + λ xP quake Lt.2 x8m.
θ + λ x P quake Lt.3 x 12m.θ + λ xP quake Lt.4 x 16m.
θ = 12 x 1,3 x 1,876 Tm x 4m x 4m.
θ + 1,3 x 3,1178T x4m.θ + 1,3 x 6.2356T x 8m.
θ + 1,3 x 9,3534T x 12m.θ + 1,3 x 8,2449T x 16m.θ = 866,7207 T-m
θ Kerja Dalam = Kerja Luar
52,8 Mp θ = 866,7207 T-m θ
Mp = 16,4152 T-m
1,2Mp 1,2Mp
1,2Mp 1,2Mp
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Universitas Sumatera Utara
3.5.2.4 Rekapitulasi Momen Plastis pada Portal B