Evaluasi kinerja sistim struktur penahan beban lateral dinding geser beton bertulang dengan outrigger = Performance evaluation of reinforced concrete shear wall with outrigger retaining lateral load system
Mirzan Gani;
Sjahril A. Rahim, supervisor; Heru Purnomo, supervisor; Yuskar Lase, examiner; Elly Tjahjono, examiner; Mulia Orientilize, examiner
(Fakultas Teknik Universitas Indonesia, 2014)
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[ABSTRAK Outrigger ditujukan untuk memberikan kekangan rotasi pada dinding geser dan kolom-kolom eksternal yang diperkaku belt truss merupakan komponen penahanaksial akibat aksi dari outrigger. Penelitian Lee (2008), Taranath (2010), Fawzia (2011) dan peneliti lainnya menunjukkan aksi outrigger ini dapat mereduksimomen nominal dinding geser dan meminimalisir simpangan lateral bangunan. Namun akibat kekangan outrigger ini menimbulkan tegangan tambahan pada dinding geser pada lokasi dimana outrigger terpasang. Selanjutnya beban aksial tambahan dari aksi outrigger pada kolom-kolom perimeter cenderung akan mempengaruhi kapasitas kolom pada kondisi kritis. Dalam penelitian ini perilakunon-linier struktur shearwall-outrigger-belt truss 50 lantai yang didisain tanpa dan dengan faktor pembesar Ωo 2,5 dan modifikasi respon R sebesar 6 sesuai SNI03-1726-2010 dievaluasi menggunakan analisis non-linier pushover. Hasil penelitian menunjukkan untuk struktur tanpa penggunaan faktor pembesar Ωo mencapai damage index melebihi batas safety limit state yang diakibatkan oleh tercapainya secara dini sendi plastis pada bresing outrigger maupun pada couple beam. Sementara untuk struktur yang menggunakan faktor pembesar Ωo memberikan hasil yang lebih baik namun belum mampu mencapai kinerja struktur sesuai yang ditentukan FEMA 440. Modifikasi dilakukan pada couple beam di lokasi outrigger terpasang menggunakan disain rangka baja untuk memperbaikikinerja struktur yang menggunakan faktor pembesar Ωo. Hasil modifikasi memberikan kinerja struktur yang meningkat. ABSTRACT Outrigger intended to provide rotational restraint at shear wall and external columns stiffened by belt truss are axial bearing components due to the action ofthe outrigger. Lee (2008), Taranath (2010), Fawzia (2011) and others shows outrigger can reduce nominal moment of shear wall and building lateral drift. Butthe consequences of this outrigger restraints afford additional stresses to the shear wall at the location where outrigger attached. Furthermore additional axial load by outrigger action to the perimeter columns likely would affect the capacity of the column in critical condition. In this study the behaviour of non-linear 50 story shearwall-outrigger-belt truss structure designed with and without magnifyingfactor Ωo 2,5 and response modification factor 6 required by SNI 03-1726-2010 evaluated using non-linear pushover analysis. The results showed for the structurewithout magnifying factor Ωo reached damage index beyond safety limit state,caused by plastic hinge formed early at the outrigger bresing and couple beam. As for the structure that uses a magnifying factor Ωo give better results but have notbeen able to achieve the specified performance of the structure in accordance FEMA 440. Modification made to the couple beam at the location where theoutrigger attached using steel frame design to improve the performance of a structure that using magnifying factor Ωo. Modified structures provide increasedperformance;Outrigger intended to provide rotational restraint at shear wall and external columns stiffened by belt truss are axial bearing components due to the action ofthe outrigger. Lee (2008), Taranath (2010), Fawzia (2011) and others shows outrigger can reduce nominal moment of shear wall and building lateral drift. Butthe consequences of this outrigger restraints afford additional stresses to the shear wall at the location where outrigger attached. Furthermore additional axial load by outrigger action to the perimeter columns likely would affect the capacity of the column in critical condition. In this study the behaviour of non-linear 50 story shearwall-outrigger-belt truss structure designed with and without magnifyingfactor Ωo 2,5 and response modification factor 6 required by SNI 03-1726-2010 evaluated using non-linear pushover analysis. The results showed for the structurewithout magnifying factor Ωo reached damage index beyond safety limit state,caused by plastic hinge formed early at the outrigger bresing and couple beam. As for the structure that uses a magnifying factor Ωo give better results but have notbeen able to achieve the specified performance of the structure in accordance FEMA 440. Modification made to the couple beam at the location where theoutrigger attached using steel frame design to improve the performance of a structure that using magnifying factor Ωo. Modified structures provide increasedperformance, Outrigger intended to provide rotational restraint at shear wall and external columns stiffened by belt truss are axial bearing components due to the action ofthe outrigger. Lee (2008), Taranath (2010), Fawzia (2011) and others shows outrigger can reduce nominal moment of shear wall and building lateral drift. Butthe consequences of this outrigger restraints afford additional stresses to the shear wall at the location where outrigger attached. Furthermore additional axial load by outrigger action to the perimeter columns likely would affect the capacity of the column in critical condition. In this study the behaviour of non-linear 50 story shearwall-outrigger-belt truss structure designed with and without magnifyingfactor Ωo 2,5 and response modification factor 6 required by SNI 03-1726-2010 evaluated using non-linear pushover analysis. The results showed for the structurewithout magnifying factor Ωo reached damage index beyond safety limit state,caused by plastic hinge formed early at the outrigger bresing and couple beam. As for the structure that uses a magnifying factor Ωo give better results but have notbeen able to achieve the specified performance of the structure in accordance FEMA 440. Modification made to the couple beam at the location where theoutrigger attached using steel frame design to improve the performance of a structure that using magnifying factor Ωo. Modified structures provide increasedperformance] |
 T42281-Mirzan Gani.pdf :: Unduh
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| No. Panggil : | T42281 |
| Entri utama-Nama orang : | |
| Entri tambahan-Nama orang : | |
| Entri tambahan-Nama badan : | |
| Subjek : | |
| Penerbitan : | Depok: Fakultas Teknik Universitas Indonesia, 2014 |
| Program Studi : |
| Bahasa : | ind |
| Sumber Pengatalogan : | LibUI ind rda |
| Tipe Konten : | text |
| Tipe Media : | unmediated ; computer |
| Tipe Carrier : | volume ; online resource |
| Deskripsi Fisik : | xxiv, 156 pages : illustration ; 28 cm + appendix |
| Naskah Ringkas : | |
| Lembaga Pemilik : | Universitas Indonesia |
| Lokasi : | Perpustakaan UI, Lantai 3 |
| No. Panggil | No. Barkod | Ketersediaan |
|---|---|---|
| T42281 | 15-17-672293534 | TERSEDIA |
| Ulasan: |
| Tidak ada ulasan pada koleksi ini: 20389808 |
