Permana, Dede Riki (2017) EVALUASI STABILITAS DAN KAVITASI PADA SPILLWAY BENDUNGAN JATIGEDE BERBASIS INSTRUMENTASI. S1 thesis, Universitas Pendidikan Indonesia.
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Abstract
Spillway sangat penting untuk mengatur debit yang berada di tampungan dan untuk mengeluarkan air jika terjadi debit banjir sehingga spillway harus aman terhadap gaya-gaya yang ada supaya tidak mengalami kegagalan konstruksi. Penelitian ini dilakukan untuk mengetahui keamanan spillway dan untuk mengetahui perilaku spillway sejak dini berdasarkan instrumentasi. Faktor keamanan dihitung berdasarkan ketentuan dari U.S. Departement of the Interior Bureau of Reclamation, pemodelan menggunakan program Plaxis 8.6, pengolahan data instrumen, analisa regresi dan kavitasi. Hasil penelitian menunjukkan bahwa pada kondisi MAW +260 faktor keamanan gelincir yaitu 1,614 , guling yaitu 1,919 , daya dukung tanah yaitu 66,93 dan gaya angkat yaitu 2,321. Kondisi MAW +262 faktor kemanan gelincir yaitu 1,602 , guling yaitu 1,885 , daya dukung tanah yaitu 66,68 dan gaya angkat yaitu 2,271. Hasil pemodelan Plaxis 8.6 faktor keamanan untuk MAW +260 yaitu 2,322 dan MAW +262 yaitu 2,391. Hasil pengolahan data instrumen Joint Meter terbesar yaitu 0,091 mm lebih kecil dari ijin yaitu 0,5 mm, sedangkan Reinforcement Stress Meter yaitu 61,90 kg/cm2 lebih kecil dari ijin yaitu 1600 kg/cm2. Hubungan antara instrumen Joint Meter dan Reinforcement Stress Meter dengan faktor keamanan menghasilkan suatu persamaan yaitu Y = 2,607433-0,6658x1-0,00025x2. Hasil perhitungan kavitasi setiap section yang dilakukan berdasarkan perbedaan bukaan radial gate, bahwa terjadi kavitasi pada cross section 310,54-312,54 (reach 1), 252,54-277,54 (reach 1), 239,54-249,54 (reach 2) dan 38,76-48,76 (reach 3). Kata Kunci: spillway, faktor keamanan, instrumen, kavitasi. Spillway is very important to set the discharge in storage and to release water if happened flood discharge so spillway must be safe against forces that no structure’s failure. This research was conducted to determine safety of spillway and to know the behavior of spillway since early based on instrumentation. Safety factor is calculated based on the rule of U.S. Departement of the Interior Bureau of Reclamation,modeling using Plaxis 8.6, processing data instruments, analysis of the regression dan cavitation. The result od research shows that in the condition MWL +260 safety factor from sliding is 1,614 , overturning is 1,919 , bearing capacity is 66,93 and uplift is 2,321. In the condition MWL +262 safety factor from sliding is 1,602 , overturning is 1,885 , bearing capacity is 66,68 and uplift is 2,271. The result of the modeling Plaxis 8.6 the safety factor for MWL +260 is 2,322 and MWL +262 is 2,391. The biggest result of the processing Joint Meter data instrument is 0,091 mm smaller than permit 0,5 mm, while Reinforcement Stress Meter is 61,90 kg/cm2 smaller than permit 1600 kg/cm2. The relationship between Joint Meter and Reinforcement Stress Meter with safety factor produce an equal Y = 2,607433-0,6658x1-0,00025x2. The calculation of cavitation in every section based on the difference radial gate openings that cavitation does happen on cross section 310,54-312,54 (reach 1), 252,54-277,54 (reach 1), 239,54-249,54 (reach 2) and 38,76-48,76 (reach 3).. Keywords: spillway, safety factor, instrument, cavitation.
| Item Type: | Thesis (S1) |
|---|---|
| Additional Information: | No. Panggil: S_TS_PER_e-2017; Pembimbing : I. Rakhmat Yusuf, II. Odih Supratman |
| Uncontrolled Keywords: | Spillway, faktor keamanan, instrumen, kavitasi. |
| Subjects: | L Education > L Education (General) T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Fakultas Pendidikan Teknologi dan Kejuruan > Jurusan Pendidikan Teknik Sipil > Program Studi Teknik Sipil |
| Depositing User: | Mr. Cahya Mulyana |
| Date Deposited: | 07 Aug 2018 08:22 |
| Last Modified: | 07 Aug 2018 08:22 |
| URI: | http://repository.upi.edu/id/eprint/30271 |
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