Hanifah, Yudnina Nikmatul (2017) Kinerja Struktur Dermaga Curah Kering Untuk Kapasitas Kapal 40.000 DWT Di Pidie, Aceh Terhadap Beban Gempa. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perencanaan berbasis gaya atau force-based design yang digunakan pada perencanaan struktur terhadap beban gempa di Indonesia didasarkan pada analisis struktur elastis. Kenyataannya, perilaku keruntuhan struktur pada saat terjadi gempa adalah inelastis sehingga force-based design tidak mampu menggambarkan perilaku riil keruntuhan struktur. Oleh karena itu, evaluasi kinerja struktur dengan menggunakan metode displacement-based design yang menggambarkan perilaku inelastis struktur menjadi penting untuk memastikan bahwa pada saat terjadi gempa, kinerja struktur adalah memuaskan. ASCE 61-14 juga menyatakan bahwa berbeda dengan force-based design, displacement-based design dapat digunakan untuk semua klasifikasi desain dermaga. Pada Tugas Akhir ini, ASCE 61-14 digunakan sebagai pedoman dalam analisis kinerja struktur. Analisis Nonlinear Static Pushover dilakukan untuk mengetahui kapasitas struktur hingga batas keruntuhannya, sedangkan untuk mengetahui kinerja struktur dermaga terhadap beban gempa dilakukan analisis nonlinier static demand berdasarkan FEMA 440 Equivalent Linearization. Evaluasi kinerja struktur dilakukan terhadap dermaga curah kering untuk kapal dengan kapasitas 40.000 DWT yang berlokasi di Pidie, Aceh. Dermaga ini merupakan dermaga tipe pier dengan dek beton dan tiang pancang baja. Hasil dari studi ini menunjukkan bahwa terhadap beban gempa periode ulang 950 tahun dan 2475 tahun yang spektrumnya dihitung berdasarkan ASCE 7-05, level kinerja struktur adalah Minimal Damage serta diketahui juga bahwa tidak terjadi keruntuhan pada struktur. Terhadap gempa 950 yang spektrumnya dihitung berdasarkan RSNI 2833-201X, level kinerja struktur adalah Minimal Damage serta keruntuhan yang terjadi adalah kelelehan tiang tertanam dan ujung tiang. Sedangkan terhadap gempa 2475 yang spektrumnya dihitung berdasarkan RSNI 2833-201X level kinerja struktur adalah adalah Controlled and Repairable Damage dengan kelelehan tiang tertanam dan ujung tiang. Hasil kinerja ini memenuhi level kinerja minimum struktur yang disyaratkan oleh ASCE 61-14.
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The force-based design method used on seismic design in Indonesia is based on elastic analysis. In fact, collapse behavior of the structure in the event of an earthquake is inelastic. For this reason, the force-based design is unable to give the real picture of structural collapse. Consequentlyl performance assement of the structure using displacement-based design method which captures inelastic behavior of the structure become important to ensure that during earthquake the performance of the structure is acceptable. It is also stated in ASCE 61-14, different from force-based design, displacement-based design is permitted for all design classification of the pier. This Final Project is determined to follow ASCE 61-14. Nonlinear Static Pushover analysis was performed to obtain the capacity of the structure up to its collapse limit, whereas to achived the performance level of the structure under seismic loading, Nonlinear Static Demand analysis is carried out based on FEMA 440 Equivalent Linearization. The object of this seismic performance assemsent a pier with concrete deck and steel piles which located in Pidie, Aceh that serves loading and unloading of a 40.000 DWT bulk carrier ship. The results of this study indicate that under the 950 and 2475 year-return period of ground motion, which spectrum calculated based on ASCE 7-05, the performance level of the structure is Minimal Damage. It is also knows that there is no structural yield. Under the 950 year-return period of ground motion, which spectrum calculated based on RSNI 2833-201X , the performance level of the stucture is Minimal Damage and the structure experiencies structural yield at in-ground and at the top of piles. While under the 2475 year-return period of ground motion which spectrum calculated based on RSNI 2833-201X , the performance level of the stucture is Controlled and Repairable Damage with structural yield at in-ground and at the top of piles. This result meets the minimum performance level required for the pier structure as stated on ASCE 61-14.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Seismic Performance, Performance Level, Displacement-based Design, Nonlinear Spring, Pushover |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) |
| Divisions: | Faculty of Civil Engineering and Planning > Civil Engineering > 22301-(D4) Diploma 4 |
| Depositing User: | Yudnina Nikmatul Hanifah |
| Date Deposited: | 10 Oct 2017 08:10 |
| Last Modified: | 06 Mar 2019 07:12 |
| URI: | http://repository.its.ac.id/id/eprint/44685 |
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