Kurnianto, Fauzan (2017) Desain Modifikasi Struktur Gedung Apartemen Gunawangsa Tidar Surabaya Menggunakan Struktur Beton Bertulang Dengan Sistem Outrigger Dan Belt-truss. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Gunawangsa Tidar Surabaya memiliki 3 buah tower dengan 37 lantai pada setiap towernya. Dengan ketinggian hingga ±115 meter, sering terasa getaran pada lantai ketika angin berhembus kencang. Selain beban angin, bangunan diharapkan juga mampu menahan beban gempa.Untuk mengatasi masalah tersebut, bangunan perlu dimodifikasi agar performa bangunan dalam menahan beban lateral lebih baik lagi. Dengan mempertahankan struktur beton yang ada, bangunan dimodifikasi menggunakan sistem outrigger dan belt-truss. Sistem outrigger bekerja ketika dikenai beban lateral, kolom luar yang terhubung balok outrigger menahan rotasi pada kolom inti, menyebabkan simpangan lateral dan momen pada kolom inti menjadi lebih kecil. Sedangkan peran dari belt-truss adalah sebagai pengaku, dimana sistem outrigger yang menggunakan belt-truss memiliki kekakuan lebih baik daripada sistem outrigger tanpa belt-truss.
Dimensi dari balok outrigger dan belt-truss adalah 400 x 2000 mm. Dari hasil analisis menggunakan Extract, didapat nilai reduksi dari kolom outrigger sebesar 6,76. Sehingga nilai R sebesar 5 yang digunakan dalam desain dianggap cukup.
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Gunawangsa Tidar Surabaya has 3 towers with 37 floors on each of it. With up to 115 meters of height, vibrations are often felt on the floor when the wind blows hard. Besides wind loads, the building is also expected to be able to hold earthquake loads. To solve those problems, the building needs to be modified so that performance of it in the earthquake and wind loads can be better. By maintaining the existing concrete structure, the building is modified by using outrigger and belt-truss system. The outrigger system works when it is subjected to lateral loads, the exterior column that is connected with the outrigger beam holds the rotation on the core column, causing the lateral drift and the moment on the core column to become smaller. Whilst, the role of belt-truss is as a stiffner, where the outrigger system using belt-truss has greater stiffness than the outrigger system without belt-truss.
The dimensions of the outrigger beam and belt-truss are 400 x 2000 mm. From the analysis using Extract, it is obtained the reduction value of the outrigger column is found as 6,76. Thus, the value, R, equals to 5 used in the design is considered sufficient.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Belt-truss, Extract, Gempa, Outrigger, Struktur Beton. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA681 Concrete construction |
| Divisions: | Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis |
| Depositing User: | Fauzan Kurnianto |
| Date Deposited: | 11 Oct 2017 02:57 |
| Last Modified: | 08 Mar 2019 02:19 |
| URI: | http://repository.its.ac.id/id/eprint/46688 |
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