Presentasi Tugas Besar Bangunan Lepas Pantai
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Transcript of Presentasi Tugas Besar Bangunan Lepas Pantai
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Tugas Besar : KL-4121 Bangunan Lepas Pantai
Kelompok 10 :Essantio Denira 15508001Yanottama Wirawan 15508022Faisal Dwiyana Purnawarman15508045
Dosen : Prof. Ricky Lukman Tawekal, Ph.DAsisten : Ali Rosyidi, S.T.
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Overview Tugas Besar
• Merancang sebuah Offshore Platform tipe
Jacket dengan 2 deck : Main Deck dan Cellar
Deck
• Memberikan Pembebanan Terhadap Platform
• Melakukan Pengujian terhadap Platform
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Metode Pengerjaan
Desain Struktur
Unity Check
Operating Storm
Desain Ulang
Desain jacket, deck, dll
Pembebanan Tiap Load,dan inplace analysis
Aplikasi Tiap Kondisi
Re-desain platform
Re-checkplatform
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Spesifikasi Platform
• Equipment Layout RMP#3o Spacing Leg = 25 x 42 ft2
o Jacket Batter = type 1
o Jacket plan elevation = 4
o Elevasi Mudline = -98 ft
o Environmental data = grid 2-
9*
o Soil data = 6
o No Piping Load
o No Conductor Pile
o Crane Rest Boom
Plan elevation 2
Plan elevation 3
Plan elevation 4
Plan elevation 1
1 2
A
B
jacket key plan no. 1batter y/z=x/z= 1/8
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Equipment Layout RMP#3 : Main Deck
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Equipment Layout RMP#3 : Cellar Deck
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Jenis Pembebanan ( Load )
Load
Equipment Load
Wave &Current Load
Dead Load
Live Load
Wind Load
Crane Load
Crane Mome
nt Load
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Environmental Data
Depth % Depth ( ft )Return Period ( Years )
1 1000 0 3.08 5.74
10 9.8 2.54 4.4820 19.6 2.14 3.5630 29.4 1.84 2.8840 39.2 1.63 2.3950 49 1.48 2.0360 58.8 1.36 1.7770 68.6 1.28 1.5780 78.4 1.22 1.4390 88.2 1.17 1.33
100 98 1.14 1.26
Current ( Arus ) Wave ( Gelombang )
Item UnitReturn Period ( Years )
1 100Max Individual Wave
H max ft 12.11 30.31T max s 7.64 10.18
Significant Wave
H s ft 6.53 16.34T s s 5.07 7.6
Item UnitReturn Period ( years )
1 1001-hour-mean fps 51.02 117.85
Wind ( Angin )
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Perancangan Jacket dan Deck• Minggu 1
Penambahan Detail Platform• Minggu 2
Memasukkan Data Beban• Minggu 3
Pengujian dan Pengecekan Error• Minggu 4
Timeline
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Minggu 1 Minggu 2 Minggu
3Minggu
4
Detail Timeline
Perancangan Platform:1. Perancangan Jacket2. Perancangan Main Deck3. Perancangan Cellar Deck
Penambahan Detail Platform:1. Penambahan Conductor Pile2. Penambahan Boat Landing
Memasukkan Data Beban:1. Dead Load2. Equipment Load3. Live Load4. Crane Load5. Crane Moment6. Wind Load7. Wave Load8. Current Load
Pengujian dan PengecekanError:1. Run Wizard2. Pengecekan Error3. Memperbaiki Error
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PERANCANGAN JACKET DAN DECK
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Perancangan Jacket
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Perancangan Main Deck
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Perancangan Cellar Deck
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PENAMBAHAN DETAIL PLATFORM
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Perancangan Boat Landing
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PEMBEBANANPLATFORM
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Pembebanan Dead Load
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Pembebanan Equipment Load
• Menghitung Equipment Loado Rumus : ( Size / Weight ) * 1000
o Main Deck
o Cellar Deck
Code Name Size Weight Pressure
C-845 48 2.2 45.833333
Genset 29.88 1.5 50.200803
Elect Equip 84.96 1.23 14.477401
Elect Equip 350 1.23 3.5142857
L-410 240 2 8.3333333
L-210 0.91 1.6 1758.2417
T-820 3.46 1.1 317.91907
TR 16.025 5.9 368.17472
V-850 25.6 2.4 93.75
V-860 14.43 2.6 180.18018
X-875 50.8 2.2 43.307086
P-490 2 1.49 745
PCR 350 33.07 94.485714
Total 1216.065 58.52 3723.4176
Code Name Size Weight PressureP-895 61.625 1.1 17.849898V-300 160 26 162.5
Fw pump 2.25 1.1 488.88888
Total 223.875 28.2 669.23878
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Equipment Load Pada Main Deck
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Equipment Load Pada Cellar Deck
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Pembebanan Live Load
• Menghitung Besar Live Loado Main Deck
o Cellar Deck
Luas area deck 3201.971Luas equipment 1216.065Luas live load 1985.906Weight ( normal ) 100Pressure ( normal ) 50.354850Weight ( storm ) 75Pressure ( storm ) 37.766137
Luas area deck 3257.393Luas equipment 223.875Luas live load 3033.518Weight ( normal ) 100Pressure ( normal ) 32.965026Weight ( storm ) 75Pressure ( storm ) 2275.1385
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Live Load pada Main Deck
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Live Load pada Cellar Deck
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Pembebanan Crane Load dan Crane Moment
• Masing – masing load dan Moment crane :
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Gambar Load dan Moment Crane
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Pembebanan Wind Load
• Penghitungan Wind Load
V = kecepatan angin pada 32,8 ft di atas permukaan lautz = elevasi desainZr = 32,8 ft diatas permukaan lautm = 1/8 untuk angin tetap, 1/13 untuk badai
Cs = koefisien bentukA = Luas proyeksi (ft^2)Vz = Kecepatan Angin (Mph)
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Besar Wind Load
• Kondisi Normal (dalam Kips)
• Kondisi Storm (dalam Kips)
y xcellar deck 2.399 1.943main deck 0.55 0.475
y xcellar deck 12.73 10.31main deck 2.78 2.4
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Wind Load pada arah-x
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Wind Load pada arah-y
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Pembebanan Wave Load dan Current Load
• Menghitung Wave Loado Rumus :
o Nilai wave load
H/gT^2 d/gT^2max 0.029814077 0.096396555significant 0.025895736 0.38863432
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Gambar Wave Load dan Current Load
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Combination Load
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PENGUJIAN PLATFORM
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Metode Pengujian Platform
• Run Unity-Check Wizard dengan memperhitungkan :o File model
o File soil data
o File tubular joints check
• Run Postvue data file untuk melihat kondisi platform
setelah diuji.
• Apabila struktur masih bermasalah, re-desain dan ulangi
unity-check
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Hasil Pengujian
• Pengujian dilakukan pada platform untuk kondisi operating
dan storm
• Pengujian model keduanya menghasilkan data Postvue
tanpa ada defleksi pada struktur ( ada pada gambar )
• Pengujian diatas tanpa menggunakan faktor soil data
• Pengujian menggunakan faktor soil data menghasilkan
keluaran dengan beberapa error pada pile group ( ada
pada gambar )
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Gambar Postvue data file
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Gambar Error Soil Data
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Date 1
- Error disconnected
joints and members
Date 2
- Error Boat Landing Skipping
Check
Date 3- Error Equipment Load
- Error Live Load Joints
- Error Wind Direction
- Error Combination Load
Week 4- Error running soil data
- Error pile data load
Error Timeline
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KESIMPULAN
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Kesimpulan
• Desain struktur harus dilakukan secara teliti dan runtut
agar efisien dan efektif
• Penghitungan load dan momen harus teliti agar hasilnya
lebih presisi
• Setiap detail desain dan momen harus dicek ulang untuk
menghindari error saat pengujian
• Perlu dilakukan re-check dan re-desain hingga didapatkan
struktur yang memenuhi persyaratan beban, momen,
maupun efisiensi struktur