Modifikasi Perencanaan City High School Surabaya Dengan Menggunakan Sistem Struktur Beckling Restrained Braced Frames

Suprapto, Agung Hadi (2016) Modifikasi Perencanaan City High School Surabaya Dengan Menggunakan Sistem Struktur Beckling Restrained Braced Frames. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Gedung Marvell City, perkantoran 13 lantai yang mengalami beberapa modifikasi dalam strukturnya dalam tahap pelaksanaan. Merupakan gedung dengan konstruksi beton bertulang konvensional, dengan jarak kolom rata-rata 8 meter. Struktur gedung ini merupakan existing yang tidak dipakai selama puluhan tahun dengan tanpa adanya perawatan. Dengan adanya perubahan desain, sehingga terjadi penambahan beban pada struktur existing maka perlu diadakan peninjauan kembali, mempertimbangkan adanya susut dan rangkak pada beton seiring berjalannya waktu. Selain itu dengan adanya penambahan struktur tanpa menggunakan shearwall beton, maka digunakan struktur baja sistem BRBF yang dapat menahan beban siklik akibat beban lateral. Dengan adanya perubahan pada struktur bangunan tersebut, dilakukan desain baru dengan Baja sistem BRBF. Tahapan desain mulai dari menghitung gaya dan beban-beban yang mempengaruhi struktur, menentukan desain sistem strukturnya, mengontrol stabilitas elemen-elemen struktur terhadap bebanbeban yang bekerja, menentukan pondasi yang dipakai pada sistem struktur yang mampu menahan beban-beban yang direncanakan, kemudian menuangkan dalam gambar teknis sebagai hasil akhir perencanan. Struktur baja dengan BRBF (Buckling Restrained Braced Frame) diharapkan dapat menggantikan struktur beton penahan beban lateral. Disamping itu karena baja lemah dalam hal menerima tekanan, maka masalah tekuk yg terjadi pada baja harus dapat diantisipasi. Dalam upaya menyelesaikan masalah tekuk pada sistem rangka bresing konsentrik, nilai kelangsingan yang dimiliki bresing direncanakan sekecil mungkin, agar nilai kekuatan bresing dapat mendekati kekuatan lelehnya. Dari analisa dan hasil perhitungan diperoleh hasil, yaitu: tebal pelat atap, plat lantai 9 cm, dimensi balok induk lantai 1- 4WF 700.300.13.24, dimensi balok induk lantai 4-8 WF 600.20011.17, dimensi balok induk lantai 8-Atap WF 500.200.10.16, dimensi kolom lantai 1-4 HSS800.800.16, dimensi kolom lantai 4-8 HSS700.700.16, dimensi kolom lantai 8-Atap HSS600.600.16, dimensi BRB arah memanjang HSS200.200.10 dengan Steel Core 150.150.15, dimensi BRB arah melintang HSS200.200.10 dengan Steel Core 175.175.15. Sambungan struktur utama direncanakan sebagai sambungan kaku dengan baut A-325. Perencanaan pondasi menggunakan tiang pancang spun pile dimensi berdiameter 30cm dengan kedalaman 30m. Sloof ukuran 40cm x 60cm dengan tulangan utama tarik 5D16 dan tekan 4D16 dan tulangan geser Ø12-200. ========== Marvell City, an office building with 13 floors had undergone several modifications in its structure during the implementation phase. It is a building with conventional concrete construction, with an average column spacing 8 meters. This building is a former existing building that was not in use for decades and was given no treatment. With the change in design, there is additional load on the existing structure, thus, it is necessary to review and consider the shrinkage and damage of the concrete within the time. On the other hand, because of the addition of structure without concrete shear wall, a BRBF steel structure system that can withstand cyclic loads due to lateral load is used. Thus, with the structure changes of the building, a new design with BRBF Steel system is carried out. Stage of designs is started from calculating the force and loads which affect the structure, determining the design of structure system, controlling the stability of structural elements to the active loads, determining the base which used in the structure system, which is capable to withstand the loads planned, the last, describing it in technical drawing as a final result planning. A steel structure with BRBF (buckling restrained braced frames) is expected to replace lateral load-bearing concrete structure. Besides, because the steel material is weak in terms of receiving pressure, the problems that occurred in steel buckling must be able to anticipate. As an effort to solve the buckling problem of concentric bracing frame system, the slender value of bracing is planned as small as possible, so that the bracing power value can approach its melting strength. From the analysis and calculation results, it is concluded that : The thickness of roof plate, floor plate 9cm, main beam dimension of 1-4th floor WF 700.300.13.24, main beam dimension of 4-8th floor WF 600.20011.17, main beam dimension of 8th floor WF 500.200.10.16, column dimensions of 1-4th floor HSS800.800.16, column dimensions of 4-8th floor HSS700.700.16, column dimensions of 8th floor-Rooftop HSS600.600.16, elongated BRB dimension HSS200.200.10 with Steel Core 150.150.15, transversal BRB dimension HSS200.200.10 with Steel Core 175.175.15. The main structure connection is planned as a rigid connection with A-325 bolt. Base plan is using spun pile pole, 30cm in diameter with 30m depth. Sloop size 40cm x 60cm with the main reinforcement pull 5D16, pressure 4D16 and shear Ø12-200.

Item Type: Thesis (Undergraduate)
Additional Information: RSS 690.831 4 Sup m 3100016066597
Uncontrolled Keywords: buckling, Buckling Restrained Braced, siklik, bresing, modifikasi, buckling, Buckling Restrained Braced, cyclic, bracing, modifications
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
T Technology > TA Engineering (General). Civil engineering (General) > TA656.2 Buckling
Divisions: Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User: - Davi Wah
Date Deposited: 11 Nov 2019 08:31
Last Modified: 11 Nov 2019 08:31
URI: http://repository.its.ac.id/id/eprint/71467

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